Re: Camshafts and/or Pulleys for sale
SJ Sportscars has some Competition cam pulleys that have 5 keyways for different timing variations. With 5 keyways and the ability to run the pulley on 2 sides you have 10 different timing options for every pulley tooth. With each tooth being 18 degrees of crank timing, that should give you 1.8deg steps for timing, however I don't know how they divided it up. I would have done it in 1.8 MOP steps but the may be built with smaller increments around some specific timing, I cant find anybody who knows. I just ordered one to experiment with. The catch is they are completely unmarked. I¡¯ll measure it and see what timing options are available on it and report back. The good news it these pulleys are pretty cheap. Like $69ea instead of over $300 for an adjustable. If one of the settings will work then it is an easy matter for me to mark it for that setting so it is easier to use for a specific application. I¡¯ll have an answer in a couple of weeks.
Dave C
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On Jul 25, 2022, at 11:08 AM, Tim Engel <TSEngel@...> wrote:
?Ian,
Timing dots (drill points) filled with paint was a Lotus thing, and the Jensen-Healey didn't use it. They used a line/groove cut radially across the pulley rim for a timing mark, and engraved the MOP number on the pulley center-web, near the timing mark. No paint color. Asking them what COLOR MOP the pulley is will just get you a blank stare in return.
Jensen-Healey's all used C-cams. The MOPs were:
115 MOP Up through engine number 4030.
110 MOP from engine number 4030 onward.
In North America only, from engine number 10480 onward.
100 MOP on the Intake
110 MOP on the Exhaust.
By this time (1976), the J-H and Lotus 49-State versions of the 907 were the same, and the late Lotus Federal 907 also used this same 100 IN / 110 EX cam timing. It doesn't matter where you get the parts... you do not want this timing! It guts/ neuters the 907, and this config (along with the lean fuel mixture and lame ignition timing) is the source of the unkind "Gutless Wonder" saying. Not all 907s were gutless... only this last, Federal emissions 100/110 version.
Early 100 Blue dot pulleys were a true 100 MOP, but it didn't last long.
.The later 100 Blue dot/ 110 Red dot "DUAL MOP" pulleys 'cheated' the Blue dot to 97 MOP in order for it to fit on the same pulley with the 110 Red dot.
The 115 (no color),
110 Red, and
100 Blue/110 Red dual MOP pulleys
all contain 110 MOP on the pulley. If it's not marked (as on the 115) You just need to know where to find it... but it's there. IF you find one of them from a Jensen-Healey vendor, I can show you where the 110 MOP red dot is... or should be.
But when you speak with a J-H vendor, inquire about an MOP... not a dot color.
Layered on top of all of that is the question of MOP accuracy. Is the MOP pulley you find really the MOP that is marked on it. If you have the means to accurately measure the keyway location in the bore, some pulleys are clearly not the MOP that is marked on them. Oh fun...
Regards,
Tim Engel
07/25/2022, 7:19AM, webdudeca <webdudeca@...> wrote:
Tim,
I guess the obvious way forward then (assuming I can find a suitable red dot pulley) is to simply install the new pulley on the exhaust camshaft and see what that feels like. That seems a harder task than I expected. There are J-H pulleys listed out there but the vendors cannot confirm they are red dots so I am hesitating given your cautionary notes on the various versions that are out there.
Thanks again for your wisdom on this.
Ian.
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Re: Camshafts and/or Pulleys for sale
Ian,
Timing dots (drill points) filled with paint was a Lotus thing, and the Jensen-Healey didn't use it. They used a line/groove cut radially across the pulley rim for a timing mark, and engraved the MOP number on the pulley center-web, near the timing mark. No paint color. Asking them what COLOR MOP the pulley is will just get you a blank stare in return.
Jensen-Healey's all used C-cams. The MOPs were:
115 MOP Up through engine number 4030.
110 MOP from engine number 4030 onward.
In North America only, from engine number 10480 onward.
100 MOP on the Intake
110 MOP on the Exhaust.
By this time (1976), the J-H and Lotus 49-State versions of the 907 were the same, and the late Lotus Federal 907 also used this same 100 IN / 110 EX cam timing. It doesn't matter where you get the parts... you do not want this timing! It guts/ neuters the 907, and this config (along with the lean fuel mixture and lame ignition timing) is the source of the unkind "Gutless Wonder" saying. Not all 907s were gutless... only this last, Federal emissions 100/110 version.
Early 100 Blue dot pulleys were a true 100 MOP, but it didn't last long.
.The later 100 Blue dot/ 110 Red dot "DUAL MOP" pulleys 'cheated' the Blue dot to 97 MOP in order for it to fit on the same pulley with the 110 Red dot.
The 115 (no color),
110 Red, and
100 Blue/110 Red dual MOP pulleys
all contain 110 MOP on the pulley. If it's not marked (as on the 115) You just need to know where to find it... but it's there. IF you find one of them from a Jensen-Healey vendor, I can show you where the 110 MOP red dot is... or should be.
But when you speak with a J-H vendor, inquire about an MOP... not a dot color.
Layered on top of all of that is the question of MOP accuracy. Is the MOP pulley you find really the MOP that is marked on it. If you have the means to accurately measure the keyway location in the bore, some pulleys are clearly not the MOP that is marked on them. Oh fun...
Regards,
Tim Engel
07/25/2022, 7:19AM, webdudeca <webdudeca@...> wrote:
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Tim,
I guess the obvious way forward then (assuming I can find a suitable red dot pulley) is to simply install the new pulley on the exhaust camshaft and see what that feels like. That seems a harder task than I expected. There are J-H pulleys listed out there but the vendors cannot confirm they are red dots so I am hesitating given your cautionary notes on the various versions that are out there.
Thanks again for your wisdom on this.
Ian.
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Re: Is the timing belt an engine-out procedure?
Toaph ? - Engine removal ¨C Brace yourself for this one, but THEY ARE IN IT FOR THE MONEY. Maybe they need to watch my video to see how easy it is to do in place. If you are replacing all the coolant hoses, that job is much simpler without that lump in the way. Replace all the fuel hoses at the same time.
- Leaking carbs ¨C Yes, that is probably a good statement. Unless it is leaking from the banjo bolt where the fuel line attach to the carbs, ¡°the carbs¡± is a good statement for where they are leaking.
? Since you want them to check the alternator, it is removed during the timing belt installation, so it¡¯s a good time to check the output. If you need a new one, they are available rewound to provide up to 110 amps in the same case, whereas the original was considerable less than that. ? I see that you are trying to get the most out of the engine. I don¡¯t think that you have smog checks in NY, and if you don¡¯t, you might consider replaced the Stomberg carbs with Dellortos. It¡¯s going to be pricey, because you have to replace the intake manifold as well. My guess would be $1200-$1500 for intake manifold and carbs. Factory rating for the Domestic (UK) cars with Dellortos is 160 hp (also running a different timing), Federal with Stombergs is only 140 HP, which use a retarded timing. If you REALLY want to get fancy, the steel fuel line is different between the Domestic and Federal cars. On the UK cars, the fuel line comes up to the carbs near the front of the engine. In the Federal cars with Stombergs, it comes up from the rear, so when most people in the US put Dellortos on their cars, they still have the fuel lines entering from the rear of the engine. Not a huge difference, and only good for 10 HP or so (okay, calm down. I¡¯m kidding). ? Bill ? ?
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From: [email protected] <> On Behalf Of Toaph via groups.io Sent: Monday, July 25, 2022 9:53 AM To: [email protected]; [email protected]Subject: Re: [S1S2euroS3LotusEspritOwners] Is the timing belt an engine-out procedure? ? Quick update.? I just got off the phone with their front office guy.? He admitted that it's possible to replace the timing belt without removing the engine, but they prefer to do it the other way.? He had also mentioned in our previous conversation that the carbs were "leaking."? I asked where the leak was coming from, and he said, "The carbs."? My confidence has dropped below zero.? I'm not going to even let these guys check the timing.? Game over.? They're off my list for good. On Monday, July 25, 2022 at 09:29:01 AM EDT, Toaph via groups.io <toaph@...> wrote: Thanks to everyone who replied, especially Bill with the link to the video, and Tim for all the details.? I'm not sure how email attachments work on groups.io, but I tried attaching
my statement of work and their estimate for those who are interested.? In the past I've gone to this shop for some miscellaneous, relatively minor things on a couple of my cars, and they did a fine job.? If anything my complaint was they weren't thorough enough.? I don't know if they've gone through some changes, or if this was just an isolated bad experience.? I'm going to have them tune the carbs and set the timing to the best of their ability and leave it at that.? I will NOT be signing up for the $10K package. On Saturday, July 23, 2022 at 01:32:15 PM EDT, Tim Engel <tsengel@...> wrote: The engine DOES NOT have to come out in order to replace the timing belt and tensioner bearing.? ?In my Esprit S2, I could replace both the belt & bearing in 3.0 hours with the engine IN the Esprit.? ?My record in a front-engined Eclat is 45 minutes for the timing belt only.? ?In general, replacing the tensioner bearing adds about 15 minutes to the task.
According to Lotus' Flat Rate Labor Manual, the time to accomplish the following tasks is...
ADJUST Timing Belt Tension (including setting cam timing):
0.8 hr = Esprit S1,? ?or? ?1.1 hr = Esprit S2
REPLACE Timing Belt (including setting cam timing & tensioning):
2.8 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (eccentric).
2.5 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (semi-automatic).
3.0 hr = Esprit S1 & S2
ADD the following time to both of the above IF the tensioner bearing is replaced
0.3 hr?= Esprit S1 & S2
CHECK Valve Clearances:
1.1 hr = Esprit S1 & S2
ADJUST (ie, shim) Valve Clearances:
4.0 hr = Esprit S1 & S2
Remove & Replace Engine & Gearbox Ass'y:
9.0 hr = Esprit S1 & S2
My experience is that it takes about
3.5 hours to put the engine on the floor, and...
5.5 hours to install the engine.
9.0 billable hoiurs, and they have not yet accomplished one single thing that was on your work order.
My best advice... do NOT do business with that shop.? ?They're scamming you/ padding the bill.? ?Removing the engine first is only easier/ faster 'IF' you ignore the amount of time and effort required to remove & replace the engine.? ?In general, you (or the mechanic) CAN NOT save enough time doing the above tasks on the engine out of the car to offset the time and effort (grief, pain, etc) required to remove & replace the engine !!
What is the name and address of the shop that insists upon removing the engine first.? ?Every Lotus owner living near you should be aware.
Regards,
Tim Engel
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Re: Is the timing belt an engine-out procedure?
Toaph,
That shop is off your list... I get it.
But just a different note after reviewing their quotation...
The Zenith-Stromberg 'choke' (enrichment device) requires two gaskets.
1) One internal for it's own rebuild, and
2) One between it and the carb body to install it on the carb.
Omitting either one results in a fuel leak.
The standard Z-S only includes one. You have to order the second one separately, and the shop's quote doesn't indicate whether or not they did that.
Regards,
Tim Engel
07/25/2022, 8:53AM, Toaph <toaph@...> wrote:
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Quick update. I just got off the phone with their front office guy. He admitted that it's possible to replace the timing belt without removing the engine, but they prefer to do it the other way. He had also mentioned in our previous conversation that the carbs were "leaking." I asked where the leak was coming from, and he said, "The carbs." My confidence has dropped below zero. I'm not going to even let these guys check the timing. Game over. They're off my list for good.
-- Toaph
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Re: Is the timing belt an engine-out procedure?
Quick update.? I just got off the phone with their front office guy.? He admitted that it's possible to replace the timing belt without removing the engine, but they prefer to do it the other way.? He had also mentioned in our previous conversation that the carbs were "leaking."? I asked where the leak was coming from, and he said, "The carbs."? My confidence has dropped below zero.? I'm not going to even let these guys check the timing.? Game over.? They're off my list for good.
-- Toaph
On Monday, July 25, 2022 at 09:29:01 AM EDT, Toaph via groups.io <toaph@...> wrote:
Thanks to everyone who replied, especially Bill with the link to the video, and Tim for all the details.? I'm not sure how email attachments work on groups.io, but I tried attaching
my statement of work and their estimate for those who are interested.? In the past I've gone to this shop for some miscellaneous, relatively minor things on a couple of my cars, and they did a fine job.? If anything my complaint was they weren't thorough enough.? I don't know if they've gone through some changes, or if this was just an isolated bad experience.? I'm going to have them tune the carbs and set the timing to the best of their ability and leave it at that.? I will NOT be signing up for the $10K package.
-- Toaph
On Saturday, July 23, 2022 at 01:32:15 PM EDT, Tim Engel <tsengel@...> wrote:
The engine DOES NOT have to come out in order to replace the timing belt and tensioner bearing.? ?In my Esprit S2, I could replace both the belt & bearing in 3.0 hours with the engine IN the Esprit.? ?My record in a front-engined Eclat is 45 minutes for the timing belt only.? ?In general, replacing the tensioner bearing adds about 15 minutes to the task.
According to Lotus' Flat Rate Labor Manual, the time to accomplish the following tasks is...
ADJUST Timing Belt Tension (including setting cam timing):
0.8 hr = Esprit S1,? ?or? ?1.1 hr = Esprit S2
REPLACE Timing Belt (including setting cam timing & tensioning):
2.8 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (eccentric).
2.5 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (semi-automatic).
3.0 hr = Esprit S1 & S2
ADD the following time to both of the above IF the tensioner bearing is replaced
0.3 hr?= Esprit S1 & S2
CHECK Valve Clearances:
1.1 hr = Esprit S1 & S2
ADJUST (ie, shim) Valve Clearances:
4.0 hr = Esprit S1 & S2
Remove & Replace Engine & Gearbox Ass'y:
9.0 hr = Esprit S1 & S2
My experience is that it takes about
3.5 hours to put the engine on the floor, and...
5.5 hours to install the engine.
9.0 billable hoiurs, and they have not yet accomplished one single thing that was on your work order.
My best advice... do NOT do business with that shop.? ?They're scamming you/ padding the bill.? ?Removing the engine first is only easier/ faster 'IF' you ignore the amount of time and effort required to remove & replace the engine.? ?In general, you (or the mechanic) CAN NOT save enough time doing the above tasks on the engine out of the car to offset the time and effort (grief, pain, etc) required to remove & replace the engine !!
What is the name and address of the shop that insists upon removing the engine first.? ?Every Lotus owner living near you should be aware.
Regards,
Tim Engel
|
Re: Is the timing belt an engine-out procedure?
Thanks to everyone who replied, especially Bill with the link to the video, and Tim for all the details.? I'm not sure how email attachments work on groups.io, but I tried attaching
my statement of work and their estimate for those who are interested.? In the past I've gone to this shop for some miscellaneous, relatively minor things on a couple of my cars, and they did a fine job.? If anything my complaint was they weren't thorough enough.? I don't know if they've gone through some changes, or if this was just an isolated bad experience.? I'm going to have them tune the carbs and set the timing to the best of their ability and leave it at that.? I will NOT be signing up for the $10K package.
-- Toaph
On Saturday, July 23, 2022 at 01:32:15 PM EDT, Tim Engel <tsengel@...> wrote:
The engine DOES NOT have to come out in order to replace the timing belt and tensioner bearing.? ?In my Esprit S2, I could replace both the belt & bearing in 3.0 hours with the engine IN the Esprit.? ?My record in a front-engined Eclat is 45 minutes for the timing belt only.? ?In general, replacing the tensioner bearing adds about 15 minutes to the task.
According to Lotus' Flat Rate Labor Manual, the time to accomplish the following tasks is...
ADJUST Timing Belt Tension (including setting cam timing):
0.8 hr = Esprit S1,? ?or? ?1.1 hr = Esprit S2
REPLACE Timing Belt (including setting cam timing & tensioning):
2.8 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (eccentric).
2.5 hr = Esprit S1 & S2
REPLACE (plug & play) Timing Belt Tensioner (semi-automatic).
3.0 hr = Esprit S1 & S2
ADD the following time to both of the above IF the tensioner bearing is replaced
0.3 hr?= Esprit S1 & S2
CHECK Valve Clearances:
1.1 hr = Esprit S1 & S2
ADJUST (ie, shim) Valve Clearances:
4.0 hr = Esprit S1 & S2
Remove & Replace Engine & Gearbox Ass'y:
9.0 hr = Esprit S1 & S2
My experience is that it takes about
3.5 hours to put the engine on the floor, and...
5.5 hours to install the engine.
9.0 billable hoiurs, and they have not yet accomplished one single thing that was on your work order.
My best advice... do NOT do business with that shop.? ?They're scamming you/ padding the bill.? ?Removing the engine first is only easier/ faster 'IF' you ignore the amount of time and effort required to remove & replace the engine.? ?In general, you (or the mechanic) CAN NOT save enough time doing the above tasks on the engine out of the car to offset the time and effort (grief, pain, etc) required to remove & replace the engine !!
What is the name and address of the shop that insists upon removing the engine first.? ?Every Lotus owner living near you should be aware.
Regards,
Tim Engel
|
Re: Camshafts and/or Pulleys for sale
Tim,
I guess the obvious way forward then (assuming I can find a suitable red dot pulley) is to simply install the new pulley on the exhaust camshaft and see what that feels like.? That seems a harder task than I expected.? There are J-H pulleys listed out there but the vendors cannot confirm they are red dots so I am hesitating given your cautionary notes on the various versions that are out there.
Thanks again for your wisdom on this.
Ian.
|
Look at picture 94. It is the tarp that goes over the engine cover. ?
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From: [email protected] <> On Behalf Of Rich Flowers
Sent: Sunday, July 24, 2022 2:09 PM
To: [email protected]
Subject: Re: [S1S2euroS3LotusEspritOwners] Dog box protrusion ? Nope.? Look on the outside between the 2 chrome latches at bottom right corner of image.
--
Rich F
'79 JPS #040
'95 S4s ...SHF63000
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Re: Camshafts and/or Pulleys for sale
Ian,
Just one more thing to ponder.
If you don't use the same cam and MOP timing on both intake and exhaust, then keep in mind that the INTAKE has more impact on the engine's personality. The exhaust isn't un-important, but it doesn't have as much influence over how the engine performs or behaves.
If you put a C-cam on the intake, and an E-cam on the exhaust, the result will feel/ drive more like a C-cam engine than an E-cam engine. But it's not all or nothing... it's somewhere in the middle, but leaning toward the intake's personality.
It sounds to me like you would prefer E-cam/ E-cam, but you're considering compromising with C-Cam Int/ E-cam Exh. "IF" you're going to run the mixed combination, then I'd recommend E-Cam Intake/ C-cam Exhaust. The end result won't be either one perfectly, but it will lean more toward the E-cam personality, which I perceive as your #1 preference.
Regards,
Tim Engel
07/24/2022, 10:02AM, Ian Munroe, webdudeca, <webdudeca@...> wrote:
(Snip)...
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Based on my current level of knowledge and your guidance I am thinking my preference would be to return the engine to stock (with two "E" cams) with the second best option being to put the "C" cam on the intake and "E" cam on the exhaust. To do that I would need a confirmed red dot pulley. I think my least preferred option would be to find two red dot pulleys and run "C" cams on both intake and exhaust. (Note: I actually do have two "C" camshafts available.) I am quite certain I do not want to go with the 104 cam setup since that sounds too boy-racer for me.
Ian.
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Nope.? Look on the outside between the 2 chrome latches at bottom right corner of image.
--
Rich F
'79 JPS #040
'95 S4s ...SHF63000
|
Rich, ? Not sure what you are referring to. Are you talking about the airbox, just to the left of the coolant header tank? ? Bill ? ? 
?
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From: [email protected] <> On Behalf Of Rich Flowers
Sent: Sunday, July 24, 2022 9:49 AM
To: [email protected]
Subject: [S1S2euroS3LotusEspritOwners] Dog box protrusion ? On the website , in 5th large image, what is that protrusion between the silver latches on rearend of dog box??? My 79 does not have that.? Do you think that was added?
--
Rich F
'79 JPS #040
'95 S4s ...SHF63000
|
Re: Camshafts and/or Pulleys for sale
My 2nd hand opinions, recalling what a close pal with S1 had to say on cams assuming the car, purchased back around '81, has the C type. With the stock wheels assembled at 110 MOP the car would wind out pulling hard past 7K, this with 45DCOE's, DBE 4-2-1 exhaust manifold, and higher CR pistons. After time my buddy felt it could benefit from the change to 104 MOP so he switched to green dot wheels, also converting to HTD belt train for the sake of better reliability. What he reported was that the 907 had shifted power usefully lower in the range, telling me the car felt like upshifting before 7K rather than hauling on upward as before. This is consistent with established valve timing doctrine identifying intake closing as the prime determinant of where power band occurs and would indicate that a change to 104 MOP affords better low - mid range grunt, all else remaining equal, as compared to 110 MOP. The E cam profile may well be the weak sister of the family, likely inferior to the 107 overall. With great respect for Tim's experience I cautiously propose that perhaps the 107 cam has been less well understood to this point owing to dogma on the all-conquering reputation of the 104 MOP wheels. Engine sim work I've mucked with at length indicates 107 cam on 110 MOP wheel to be superior to the C cam on either 104 or 110.
Cheers
Steve
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Get the petronix. Fast easy and done?
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On Jul 24, 2022, at 12:49 PM, wigl@... wrote:
?I found the Lumenition utterly reliable and able to deliver what my Elan tall block TC with cams needed, on road or track. So why replace on the Esprit?
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I found the Lumenition utterly reliable and able to deliver what my Elan tall block TC with cams needed, on road or track. So why replace on the Esprit?
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Re: Camshafts and/or Pulleys for sale
Dave,
Thanks for the note.? My car is located in Canada BUT it is a
domestic spec series 2.? Thus it came with Dellortos and "E" cams
and yellow dot pulleys from the factory.
Adjustable pulleys COULD be an option for me but I am wondering if
that means pulling the engine again to properly "degree" things??
Maybe not the end of the world but my preference would be not to
go through all that again.
To me the "simplest solution" would be to find an "E" camshaft and
return the engine to stock but I have not been seeing any of those
offered for sale.? It would be great if you (or someone out there)
had one for sale.
I appreciate your offer of an adjustable pulley "set" to a
suitable MOP.? I will keep that option in mind if no other
solution can be found.
Tim,
Thanks for your thoughts on my options.? Your explanations are
always so clear and helpful.? The ONLY issue I have with your
questions (you advised me to choose - exactly right of course) is
that I have very limited experience with what these changes mean
in the real world.?
I have had this car on the track in the past but not for some
years and I have no plans to do so again. I did take the car for a
four-hour run this pas week.? It was the first time I have run the
car any significant distance with the mis-matched cams ("E" on the
intake and "C" with yellow dot pulley on exhaust).? The car ran
okay but I definitely noticed far less punch at the mid to
high-end of the rev range than I recall from the stock setup.? I
would like to fix that.? Where my lack of experience comes in is
that I don't really know what the effect would be (in real-world
terms) to convert to "C" cam setup.? I know I will need higher RPM
to launch from a stop (as an example) but how much and will that
spoil my driving experience??? Maybe I need to find an example of
a stock Jensen Healey to take for a spin?
Based on my current level of knowledge and your guidance I am
thinking my preference would be to return the engine to stock
(with two "E" cams) with the second best option being to put the
"C" cam on the intake and "E" cam on the exhaust.? To do that I
would need a confirmed red dot pulley.? I think my least preferred
option would be to find two red dot pulleys and run "C" cams on
both intake and exhaust.? (Note: I actually do have two "C"
camshafts available.)? I am quite certain I do not want to go with
the 104 cam setup since that sounds too boy-racer for me.
Ian.
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This email has been checked for viruses by Avast antivirus software.
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Thinking about upgrading my 79 S2 Lumenition ignition.? Is there a consensus on what to replace it with?? Or should I keep it?
--
Rich F
'79 JPS #040
'95 S4s ...SHF63000
|
On the website , in 5th large image, what is that protrusion between the silver latches on rearend of dog box??? My 79 does not have that.? Do you think that was added?
--
Rich F
'79 JPS #040
'95 S4s ...SHF63000
|
Re: Camshafts and/or Pulleys for sale
Bill,
I should have thrown out more info... I wasn't thinking. The 115 MOP and 110 MOP are on the same pulley.
There's a red dot/ blue dot dual MOP pulley. When the red dots are properly aligned, the blue dots are FOUR teeth down. Sound familiar?
In the same way, when the red dots are properly aligned, the 115 MOP timing marks are THREE teeth down. See teh attached JPEG.
If the IN next to the red dot is facing forward on the Intake pulley, then the EX mark will be facing forward next to the 115 timing mark.
If the EX next to the red dot is facing forward on the Exhaust pulley, then the IN mark will be facing forward next to the 115 timing mark.
To switch from 115 to 110 (or vice versa), it's necessary to remove the pulley, flip it over, then time using the other MOP's timing mark.
Besides, it's been 52 years since the J-H was introduced. Who knows what some interim owner might have installed on the cams.
Later,
Tim
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On 07/23/2022 6:46 PM Bill Galbraith <lotus@...> wrote:
Thanks Tim. Sounds like that won't help Ian out. Oh well, I tried.
Bill
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Re: Camshafts and/or Pulleys for sale
Thanks Tim. Sounds like that won't help Ian out. Oh well, I tried.
Bill
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-----Original Message----- From: [email protected] <> On Behalf Of Tim Engel Sent: Saturday, July 23, 2022 6:51 PM To: [email protected]; Bill Galbraith <Lotus@...> Subject: Re: [S1S2euroS3LotusEspritOwners] Camshafts and/or Pulleys for sale Bill, The stock Jensen-Healeyl 907 used two C-cams. What vintage? Early engines were timed with 115 MOP pulleys for emissions. They were never used on any other 9XX, and later J-H followed the Lotus 907's development. Later, Tim 07/23/2022, 4:30PM, Bill Galbraith, <lotus@...> wrote: Tim,
I have the major components from a JH engine that someone gave me years ago, including the cams. Without me having to dig these out, do you know what cams these would be, and will they help out Ian?
Bill -- This email has been checked for viruses by AVG.
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Bill Galbraith
