Thanks Jeremy and HNY back at ya. I well appreciate the approach suggested but I'm clear on how I'd want the bare head to fettle a touch here and there. I had lunch yesterday with a mate who's had long years in the trade, working along the way on the likes of Alfa, Ferrari, BMW, American of all sorts and he advises it's unnecessary for the head to be heated for extraction. Quite onside with heating, plus freezing the guides for reassembly though.
?
Cheers
|
Re: What distributor are you running in your 907?
I have an engine bay blower in the engine bay behind the license plate .I exhaust through and around the license plate. ? is this blower stock or was it put there . If not please explain where exactly this Esprit S1 blower was installed originally thanks?
On Wed., Jan. 1, 2025, 9:39 p.m. Bill Galbraith via , <Lotus= [email protected]> wrote: Hay, I just found out something. (I¡¯ve been a Lotus owner for 35 years). Not all cars have the engine bay blower, only the high ambient temperature climates. ? So, if you live in one of those areas and your car doesn¡¯t have the bay blower, you might consider it. ? Bill ? ? P. ? I did the calculations of the effects of running without the correct airbox, instead just using K&N filters or similar on the carbs, sucking in hot air from the engine bay. The results were pretty amazing. Lots of horsepower lost. You can find that paper on my web site:?? ? I can¡¯t measure the temperature under the engine cover of a standard car, as I¡¯ve done many things to my car to reduce the temperature. I¡¯ve had the header Jet-Hot (ceramic) coated and I wrapped the exhaust all the way to the muffler in header tape. That made a HUGE difference of the temperature near the left rear wheel well. I also have the proper engine bay blower, but an adjustable thermostat set really low (140 deg F I think). I¡¯ll try to measure it the next time I¡¯m out, although it¡¯s winter in Florida. It will only be 60 deg F on Saturday, instead of 95 deg in the summer. ? Bill ? ? The carbs were rebuilt by WEBER JETS in Vancouver Canada. EXPENSIVE. But the 2977 Esprit S1 runs like a ROLEX PRESIDENT. ? That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
|
Re: What distributor are you running in your 907?
Hay, I just found out something. (I¡¯ve been a Lotus owner for 35 years). Not all cars have the engine bay blower, only the high ambient temperature climates. ? So, if you live in one of those areas and your car doesn¡¯t have the bay blower, you might consider it. ? Bill ?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of Bill Galbraith Sent: Wednesday, January 1, 2025 9:34 PM To: [email protected]Subject: Re: [S1S2euroS3LotusEspritOwners] What distributor are you running in your 907? ? P. ? I did the calculations of the effects of running without the correct airbox, instead just using K&N filters or similar on the carbs, sucking in hot air from the engine bay. The results were pretty amazing. Lots of horsepower lost. You can find that paper on my web site:?? www.holycows.net/Lotus ? I can¡¯t measure the temperature under the engine cover of a standard car, as I¡¯ve done many things to my car to reduce the temperature. I¡¯ve had the header Jet-Hot (ceramic) coated and I wrapped the exhaust all the way to the muffler in header tape. That made a HUGE difference of the temperature near the left rear wheel well. I also have the proper engine bay blower, but an adjustable thermostat set really low (140 deg F I think). I¡¯ll try to measure it the next time I¡¯m out, although it¡¯s winter in Florida. It will only be 60 deg F on Saturday, instead of 95 deg in the summer. ? Bill ? ? The carbs were rebuilt by WEBER JETS in Vancouver Canada. EXPENSIVE. But the 2977 Esprit S1 runs like a ROLEX PRESIDENT. ? That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
|
Re: What distributor are you running in your 907?
P. ? I did the calculations of the effects of running without the correct airbox, instead just using K&N filters or similar on the carbs, sucking in hot air from the engine bay. The results were pretty amazing. Lots of horsepower lost. You can find that paper on my web site:?? www.holycows.net/Lotus ? I can¡¯t measure the temperature under the engine cover of a standard car, as I¡¯ve done many things to my car to reduce the temperature. I¡¯ve had the header Jet-Hot (ceramic) coated and I wrapped the exhaust all the way to the muffler in header tape. That made a HUGE difference of the temperature near the left rear wheel well. I also have the proper engine bay blower, but an adjustable thermostat set really low (140 deg F I think). I¡¯ll try to measure it the next time I¡¯m out, although it¡¯s winter in Florida. It will only be 60 deg F on Saturday, instead of 95 deg in the summer. ? Bill ?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of P. via groups.io Sent: Wednesday, January 1, 2025 8:43 PM To: [email protected]Subject: Re: [S1S2euroS3LotusEspritOwners] What distributor are you running in your 907? ? The carbs were rebuilt by WEBER JETS in Vancouver Canada. EXPENSIVE. But the 2977 Esprit S1 runs like a ROLEX PRESIDENT. ? That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
|
Re: What distributor are you running in your 907?
The Lucas 23 distributor is the older model that preceded the type 25. The major difference is that the Type 23 has a smaller "head" that squeezes the plug wire terminals down into a smaller diameter circle. The net effect is that the plug wire terminals are closer together on the Type 23, and further apart on the Type 25.
The Type 23 can NOT handle high arc voltage. If you use a "hot", high performance ignition coil with a little Type 23 distributor, the spark will simply jump between the plug wire terminals "Inside" the distributor cap, and the arc will never make it to the spark plugs. And more voltage/ more spark will not help, it will only make matters worse!
The Type 23 distributor should be used with ignition coils that have about 3.6-3.7 ohms of internal resistance. To measure that, remove the small 12 volt wires from the coil's small spade terminals on either side of the main coil wire terminal. Then use an Ohmmeter/ multi-meter to measure the primary field coil resistance with the ignition switch "on". You want to see 3.5-3.7 ohms, and you might stretch that to 2.75-3.5 ohms. There are several coils in the "FlameThrower" product line, but you're probably going to see much lower primary resistances across the entire "FlameThrower" product line compared to the "normal", Period-correct coils... on the order of 1.5-2.75 ohms lower resistance (higher current). That's too much current for a Type 23 Lucas distributor, and there's nothing you can do to the Type 23 to change that. You've got what you've got!!
The higher current flows through the entire ignition system's wiring, and will put the entire ignition system at risk of overe-heating/ burning out!! Even if you're using a Pertronix amplifier. The early, original Pertronix "Ignitor" Was little more than a "Points Replacer", and was not rated for any more current. Push more current thru it with a modern high-performance coil, and you can (will) turn the original "Ignitor" into a lump of coal.
If you wish to run a high performance coil with your ignition system, then the ENTIRE system MUST be designed & built to handle the higher current draw that will be running through it. The Lucas Type 23 distributor is NOT DESIGNED TO RUN WITH / HANDLE HIGH CURRENT / HIGH PERFORMANCE COILS. Period!
The Type 23 & Type 25 distributors' bases are the same... the distributors are interchangeable into the engine's "distributor drive". You can simply plug in a replacement Type 25 Lucas distributor, or even a modern Thpe 123 distributor. But you cannot massage the Type 23 into something it's not.
I'm using Stock(ish) Type 25 distributors with different 'internals'... like aftermarket electronic ignition systems. I'm not a fan of Pertronix ignition systems, and I'm not using any of them. Having said that, a friend is running a Pertronix 123 and likes it. But, the Lucas 123 will not work in a Lucas Type "23", so it's also no help to you. Your Type 23 IS YOUR LIMITER. IF you want to go with a hotter ignition system, then your first step will be to upgrade from there... install a later, high-performance distribuor, along with an electronic ignition system that the distrubutor can handle, and that can handel the HOT coil of your choice. It's not a free ride... you have to make a "balanced" selection of components to build a "System" that will work togetheer. How much coil you can use will be a function of what you upgrade your distributor/ system to.
The O-ring and the internal lip-seal upgrade only keep the distributor from leaking oil and making a mess. Whether you use a mild manered Type 23, or a hot Type 25 or Type 123, the seals need to be there.
Which brings up another point. The modern Lucas 123 does not include the internal lip seal that is critical in order for the distributor to run leak-free in a horizontal position. The lip seal can be added with a minimum of machining, but that would be up to you or your retailer... the manufacturer of the Lucas 123 does not, AND WILL NOT include the internal lip seal. It's not an OEM option.
Regards,
Tim Engel
01/01/2025 3:24 PM PST ZenHorizon via groups.io <zenhorizon@...> wrote:
toggle quoted message
Show quoted text
Tim, would this 43d do? My plan to see if its possible is to run this, order and instal sjs's o ring on the inside on the lipseal, and see if i can install the pertronix ignitor that I have in mine to the one in this one. Currently running a flame thrower coil on my 23d but i Have read not too but am not worried as I am not driving the car until I get this crazy distributor leak fixed. Hopefully a 43d dis and that o ring sjs has helps.
|
Re: What distributor are you running in your 907?
The carbs were rebuilt by WEBER JETS in Vancouver Canada. EXPENSIVE. But the 2977 Esprit S1 runs like a ROLEX PRESIDENT.
That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
?
Cheers
|
Steve,
Love to be corrected but I've always assumed the guides are
knocked out only after the head has been evenly heated up to a
particular temp, then new ones set in after another warm up as
required. I would have thought best to let the engineer remove and
replace all the guides as he may be needing to do other follow-on
work with seat cutting etc. Just think he'd prefer to be the one
to do it all.
- Jeremy
HNY by the way...
On 02-Jan-25 1:05 AM, wigl via
groups.io wrote:
toggle quoted message
Show quoted text
Greetings all,
?
I'm at work prepping the cylinder head for my engine, with
some carbon cleanup still to do in the exhaust ports but impeded
by the guides. I have new guides in hand and will turn over
those, new valves, spring package and the cleaned up head to a
well regarded local builder. As he's a bit of a journey out of
town I'm contemplating knocking the guides out myself so as to
get the head as tidy as possible before he assembles the lot.
Would a correctly sized punch and hammer be a sensible approach
for this?
?
Cheers
Steve
|
Re: What distributor are you running in your 907?
That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
?
Cheers
|
Greetings all,
?
I'm at work prepping the cylinder head for my engine, with some carbon cleanup still to do in the exhaust ports but impeded by the guides. I have new guides in hand and will turn over those, new valves, spring package and the cleaned up head to a well regarded local builder. As he's a bit of a journey out of town I'm contemplating knocking the guides out myself so as to get the head as tidy as possible before he assembles the lot. Would a correctly sized punch and hammer be a sensible approach for this?
?
Cheers
Steve
|
Re: What distributor are you running in your 907?
I use a 25d distributor, timing set at 10 degrees. I run Weber's 40 DCOE-18. with 30 chokes. My 1977 lotus Esprit S1 runs AMAZING. No wonder lots where abandoned. They never drove good when they were new. My S 1 drives UNBELIEVABLE GREAT.I have a 3 OHMS 40,000 volts PERTRONIX flamethrower. I use points. Lots of people have problems with electronic ignition. Be careful what electronic ignition you use . It could and like will mess up with your tachometer.
On Wed., Jan. 1, 2025, 6:24 p.m. ZenHorizon via , <zenhorizon= [email protected]> wrote: Tim, would this 43d do? My plan to see if its possible is to run this, order and instal sjs's o ring on the inside on the lipseal, and see if i can install the pertronix ignitor that I have in mine to the one in this one. Currently running a flame thrower coil on my 23d but i Have read not too but am not worried as I am not driving the car until I get this crazy distributor leak fixed. Hopefully a 43d dis and that o ring sjs has helps
|
Re: What distributor are you running in your 907?
Tim, would this 43d do? https://simonbbc.com/lucas-43d-type-distributor-non-vac/?srsltid=AfmBOopI0gBngW94rpUStjQsGwaiX9XeVHbg-VwkB-wGZ_JGgN5P8Ti0 My plan to see if its possible is to run this, order and instal sjs's o ring on the inside on the lipseal, and see if i can install the pertronix ignitor that I have in mine to the one in this one. Currently running a flame thrower coil on my 23d but i Have read not too but am not worried as I am not driving the car until I get this crazy distributor leak fixed. Hopefully a 43d dis and that o ring sjs has helps
|
Re: Replacing handbrake mounting plate
Yes all the best. Body off . That's alot of work OMG. Check out my many videos nom my 1977 Esprit on? TIK TOK.? ?p60850_
P. I am based just north of Denver, Colorado. As I am taking the body off my car I think I will try and fix/replace the handbrake bracket with the sill removed. If that changes I will be in touch.
thanks,
colin
|
Re: Replacing handbrake mounting plate
P. I am based just north of Denver, Colorado. As I am taking the body off my car I think I will try and fix/replace the handbrake bracket with the sill removed. If that changes I will be in touch.
thanks,
colin
|
Re: Replacing handbrake mounting plate
The brackets are available from SJ in both LH and RH versions...
I have replaced it on my S1 and it's a bit of a struggle to get the sill off as it's riveted and bonded to the body. There are rivets under the fuel tank just to add to the fun!
|
Re: Replacing handbrake mounting plate
No it's custom built. I am a retired Metal fabricator . Where are you located. Might be able?to help. Here is a video of how it's installed.?
P. Is that bracket available from a supplier?
|
Re: Replacing handbrake mounting plate
P. Is that bracket available from a supplier?
|
Re: Replacing handbrake mounting plate
toggle quoted message
Show quoted text
The handbrake pivot on my 1977 S1 is broken. To replace/repair it it looks like I need access to the inside of the sill. I could not find a previous discussion on the best way to do this, if that is indeed the correct way to replace the plate. What is the best way to approach this repair?
|
Re: Replacing handbrake mounting plate
Paul, Shane,
Thanks. I found the video: Realising that all time project is a lemon Dream Lotus restoration. It looks like a frustrating job finding all the rivets but at least I have a good idea where they are now.?
It is exactly the issue I have so I will get into it once I have the body off my car and the fuel tanks out of the way.
Colin
|
Re: Replacing handbrake mounting plate
Soup Classic Motoring has a good video on this.?? Can¡¯t remember which one it is, but one of the more recent ones.?? Not an easy job.
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of CSM via groups.io
Sent: Tuesday, December 31, 2024 4:36 PM
To: [email protected]
Subject: [S1S2euroS3LotusEspritOwners] Replacing handbrake mounting plate
?
The handbrake pivot on my 1977 S1 is broken. To replace/repair it it looks like I need access to the inside of the sill. I could not find a previous discussion on the best way to do this, if that is indeed the correct way to replace the
plate. What is the best way to approach this repair?
|
Re: Replacing handbrake mounting plate
Soup Classic Motoring showed this repair in one of his recent videos. On Tue, 31 Dec 2024 at 21:44, CSM via groups.io <csmarshall26@...> wrote:
The handbrake pivot on my 1977 S1 is broken. To replace/repair it it looks like I need access to the inside of the sill. I could not find a previous discussion on the best way to do this, if that is indeed the correct way to replace the plate. What is the best way to approach this repair?
-- Paul Compton www.paulcompton.co.uk (YouTube channel)
|
P.
Bill Galbraith
Jeremy
ZenHorizon
Paul Coleman
Paul Compton