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I am looking for the best conversion kit


 

What's the best conversion kit


 

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RMW.


On May 22, 2025, at 10:39 PM, dhillmanskibum via groups.io <dhillmanskibum@...> wrote:

?
What's the best conversion kit


 

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They all have their pluses and minuses. If you have a 2.1 I’d consider looking into Marco Mansi upgrades, I have a 1.9 and went with RMW. Their support kind of sucks and their instructions also are not amazing, but you should be able to get help from the group. The items I have purchased from Smallcar in the past have not been of great quality and I don’t like their buried clutch slave cylinder idea, so that wasn’t for me. The bostig kit is honestly a kind of stupid. Makes no sense to use a hard to find motor that doesn’t really give much more HP and sits too low. Same with the diesel kit, now I’m trying to remember what that’s called, it’s very very expensive, very well put together and super high quality but you end up with an engine that sits VERY low and that is not for me, nor was I interested in a diesel. The think with all of them is that the “kit” isn’t complete. None of them really are. The diesel one seems to be the most complete. With RMW you’ll need someone to do your harness(I used Jeff at Autoventures as he is the best and has amazing support) also you’ll need an oil pan, a better intake, an engine to start with that isn’t tired and high miles, likely a transmission refresh on yours, new clutch, also get the tank reservoir as it’s great and bomb proof. Replace the sensors on the motor with new oem ones, likely you’ll also need a subie timing belt kit. I probably missed things but that should give you an idea of what you’re getting into. Also these are strictly my opinions and are meaningless to anyone but me, so there is that?

J

On Thu, May 22, 2025 at 7:39?PM dhillmanskibum via groups.io <dhillmanskibum@...> wrote:
What's the best conversion kit


 

What are you converting?? I can think of three options off the top of my head.
Also: does it need to be legal in California?


 

I agree with John A. To my knowledge no kit is fully complete. I’m in the final stages of installing an RMW kit and, although I think the components are well made, the instructions are incomplete and somewhat confusing, especially in terms of sequencing and photos. I’m thinking their products have been updated but the instructions are lagging a bit behind. ?RMW’s expansion tank is great but I’m not sure for a Subie conversion why the overflow barb faces the front of the bus when the overflow tank is at the rear just behind the license plate. RMW’s exhaust system was so easy to install I couldn’t believe it. And it looks great as well.
?
I removed my plastic coolant pipes and replaced them with stainless steel. I will not do that again. Those old VW pipes are very thick and durable except for the ferrules that slip out of the ends. Just get GoWesty’s repair kit, install it, and forget about it for another 20 years.?
?
?Go with Jeff at AutoVentures for your harness because as far as I know it’s the most sophisticated available. And if you call for help installing his harness, he will likely be the person who answers the phone and he will answer your questions right then and there.
?
Yes, install a quality timing kit (I went with Aisin). If you have your heads machined, replace the head bolts with OEM bolts from Subaru. And be sure to use multi layer steel head gaskets.?
?
I’m going with Smallcar’s intake because it looks cleaner to me and more straightforward to install (and easier to change filters). ?I have also ordered Smallcar’s power steering hoses. ?If I had it to do over again I would probably use Smallcar’s shortened oil pan as well.?
?
You will want to know your oil pressure so I recommend one of the Glow Shift sandwich adapters with gauge. ?I installed one in my forever buzzing 2.1 only to find that my oil pressure was fine all along (better a gauge than an idiot light). I also plan to install an oil temp gauge in one of the extra ports in the sandwich adapter.?

Once my conversion is complete (and if I can find the time) I plan to post a fairly comprehensive guide to installing the RMW kit with decent photos and proper sequencing based on my personal experience. Your experience may differ.?

When I get my 89 Westy conversion done and running well I plan to start a Subie conversion on my 88 tintop while this experience is fresh in my mind. The fun never ends!
--
Warren
89 Westy?
88 Tintop
70 Westy


 

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Ditto that for Jeff @ Autoventures, great product, service !!!
SeanG?
87 Syncro , 2000 Subie 2.5

On May 23, 2025, at 8:27?AM, swissarmychainsaw via groups.io <swissarmychainsaw@...> wrote:

?
What are you converting?? I can think of three options off the top of my head.
Also: does it need to be legal in California?


 

I have found the Bostig Kit (2000-2004 Ford Focus base) good: lots of them out there for next to nothing, and Jim Akiba is so good at answering any questions not covered in his online manual: that said, he is now prototyping a kit for Honda 24A engines (Accord) and has several early adapters doing beta testing. and I think he has sold the last of his Focus kits, though he still supports those customers. I am impressed with him, and his kit. Good luck with your search, and let us know what you do choose & how satisfied you are with it.

All the best,
Rick in Austin, TX

On Friday, May 23, 2025 at 09:44:51 AM CDT, John A via groups.io <xstreamcanadian@...> wrote:


They all have their pluses and minuses. If you have a 2.1 I’d consider looking into Marco Mansi upgrades, I have a 1.9 and went with RMW. Their support kind of sucks and their instructions also are not amazing, but you should be able to get help from the group. The items I have purchased from Smallcar in the past have not been of great quality and I don’t like their buried clutch slave cylinder idea, so that wasn’t for me. The bostig kit is honestly a kind of stupid. Makes no sense to use a hard to find motor that doesn’t really give much more HP and sits too low. Same with the diesel kit, now I’m trying to remember what that’s called, it’s very very expensive, very well put together and super high quality but you end up with an engine that sits VERY low and that is not for me, nor was I interested in a diesel. The think with all of them is that the “kit” isn’t complete. None of them really are. The diesel one seems to be the most complete. With RMW you’ll need someone to do your harness(I used Jeff at Autoventures as he is the best and has amazing support) also you’ll need an oil pan, a better intake, an engine to start with that isn’t tired and high miles, likely a transmission refresh on yours, new clutch, also get the tank reservoir as it’s great and bomb proof. Replace the sensors on the motor with new oem ones, likely you’ll also need a subie timing belt kit. I probably missed things but that should give you an idea of what you’re getting into. Also these are strictly my opinions and are meaningless to anyone but me, so there is that?



On Thu, May 22, 2025 at 7:39?PM dhillmanskibum via groups.io <dhillmanskibum@...> wrote:
What's the best conversion kit


 

I already have a suburb 2.5 that was recently professionally rebuilt.? I read small cars clutch could be problematic but the article was old.? Just want to start with solid parts but have to order asap.? Wondered what parts the garages are using that professionally do the swaps?? ?Thanks. Forward progress on rainy? NH day.


On Fri, May 23, 2025 at 5:04 PM, Richard Montgomery via groups.io
<rikmont@...> wrote:
I have found the Bostig Kit (2000-2004 Ford Focus base) good: lots of them out there for next to nothing, and Jim Akiba is so good at answering any questions not covered in his online manual: that said, he is now prototyping a kit for Honda 24A engines (Accord) and has several early adapters doing beta testing. and I think he has sold the last of his Focus kits, though he still supports those customers. I am impressed with him, and his kit. Good luck with your search, and let us know what you do choose & how satisfied you are with it.

All the best,
Rick in Austin, TX

On Friday, May 23, 2025 at 09:44:51 AM CDT, John A via groups.io <xstreamcanadian@...> wrote:


They all have their pluses and minuses. If you have a 2.1 I’d consider looking into Marco Mansi upgrades, I have a 1.9 and went with RMW. Their support kind of sucks and their instructions also are not amazing, but you should be able to get help from the group. The items I have purchased from Smallcar in the past have not been of great quality and I don’t like their buried clutch slave cylinder idea, so that wasn’t for me. The bostig kit is honestly a kind of stupid. Makes no sense to use a hard to find motor that doesn’t really give much more HP and sits too low. Same with the diesel kit, now I’m trying to remember what that’s called, it’s very very expensive, very well put together and super high quality but you end up with an engine that sits VERY low and that is not for me, nor was I interested in a diesel. The think with all of them is that the “kit” isn’t complete. None of them really are. The diesel one seems to be the most complete. With RMW you’ll need someone to do your harness(I used Jeff at Autoventures as he is the best and has amazing support) also you’ll need an oil pan, a better intake, an engine to start with that isn’t tired and high miles, likely a transmission refresh on yours, new clutch, also get the tank reservoir as it’s great and bomb proof. Replace the sensors on the motor with new oem ones, likely you’ll also need a subie timing belt kit. I probably missed things but that should give you an idea of what you’re getting into. Also these are strictly my opinions and are meaningless to anyone but me, so there is that?



On Thu, May 22, 2025 at 7:39?PM dhillmanskibum via groups.io <dhillmanskibum@...> wrote:
What's the best conversion kit


 

I used the Smallcar engine carrier and intake and the Outfront Motorsports adapter plate, flywheel and shortened pan.?

Stan’s Headers exhaust manifold.?

The LUK clutch I installed was good for 80,000 miles.?

Jake
------------------------------------------
Crescent Beach, BC
-----------------------------------------------------
1984 GL 1.9 WBX
1986 Westy Weekender with 2000 2.5 SOHC Subaru, 5 speed transaxle & PosiTrac Differential


On Sat, May 24, 2025 at 9:17?AM douglas Hillman via <dhillmanskibum=[email protected]> wrote:
I already have a suburb 2.5 that was recently professionally rebuilt.? I read small cars clutch could be problematic but the article was old.? Just want to start with solid parts but have to order asap.? Wondered what parts the garages are using that professionally do the swaps?? ?Thanks. Forward progress on rainy? NH day.


On Fri, May 23, 2025 at 5:04 PM, Richard Montgomery via
<rikmont=[email protected]> wrote:
I have found the Bostig Kit (2000-2004 Ford Focus base) good: lots of them out there for next to nothing, and Jim Akiba is so good at answering any questions not covered in his online manual: that said, he is now prototyping a kit for Honda 24A engines (Accord) and has several early adapters doing beta testing. and I think he has sold the last of his Focus kits, though he still supports those customers. I am impressed with him, and his kit. Good luck with your search, and let us know what you do choose & how satisfied you are with it.

All the best,
Rick in Austin, TX

On Friday, May 23, 2025 at 09:44:51 AM CDT, John A via <xstreamcanadian=[email protected]> wrote:


They all have their pluses and minuses. If you have a 2.1 I’d consider looking into Marco Mansi upgrades, I have a 1.9 and went with RMW. Their support kind of sucks and their instructions also are not amazing, but you should be able to get help from the group. The items I have purchased from Smallcar in the past have not been of great quality and I don’t like their buried clutch slave cylinder idea, so that wasn’t for me. The bostig kit is honestly a kind of stupid. Makes no sense to use a hard to find motor that doesn’t really give much more HP and sits too low. Same with the diesel kit, now I’m trying to remember what that’s called, it’s very very expensive, very well put together and super high quality but you end up with an engine that sits VERY low and that is not for me, nor was I interested in a diesel. The think with all of them is that the “kit” isn’t complete. None of them really are. The diesel one seems to be the most complete. With RMW you’ll need someone to do your harness(I used Jeff at Autoventures as he is the best and has amazing support) also you’ll need an oil pan, a better intake, an engine to start with that isn’t tired and high miles, likely a transmission refresh on yours, new clutch, also get the tank reservoir as it’s great and bomb proof. Replace the sensors on the motor with new oem ones, likely you’ll also need a subie timing belt kit. I probably missed things but that should give you an idea of what you’re getting into. Also these are strictly my opinions and are meaningless to anyone but me, so there is that?



On Thu, May 22, 2025 at 7:39?PM dhillmanskibum via <dhillmanskibum=[email protected]> wrote:
What's the best conversion kit