Type IV air-cooled motor with Boxster transmission conversion? Pics and discussion, Was: Subaru versus Boxster transmission? |
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Type IV air-cooled motor with Boxster transmission conversion? Pics and discussion, Was: Subaru versus Boxster transmission? |
Mueller |
Oct 8 2015, 04:29 PM
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#1
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
Curiosity got me to pondering the above questions....
Suppose non-Subaru motor for the Subaru transmission and non-Boxster/Audi engine for the Boxster transmission. What about axles and hooking up to the drive hubs? One easier or vastly less expensive than the other? EDIT 2/21/2016: Now with pictures comparing Boxster transmission to 901 transmission |
Chris H. |
Oct 8 2015, 07:36 PM
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#2
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Senior Member Group: Members Posts: 4,031 Joined: 2-January 03 From: Chicago 'burbs Member No.: 73 Region Association: Upper MidWest |
Mike, I'm surprised you haven't caught the full-on Subaru bug. You were one of the engine swap pioneers with that VR6 idea of yours. You could go Subaru engine connected to Subaru 5MT trans! A 2.5 maybe?
Anyway, the cheaper way for a trans only is probably Subaru as Rich said, but either isn't too bad for the 5 speed. Needs: FWD Subie trans - pre-1996 - OLD and cheap, hard to tell the condition due to age, but at junkyards they usually let you swap them out if they are bad OR (more common) AWD trans - You would have to buy the locking spool for the AWD one but could easily make the end plate and sell the center diff for $. At a junkyard you can get older ones for low $. Newer ones can be $$$. Make sure it's old enough that it has stub axles. Plus: - two "female" Subaru CV joints (used ones from NASIOC or Craigslist, I got mine for $50). Green in color usually. - labor to re-spline a set of 914 axles re-splined on one end for the Subaru CV. This is as good or better than the $$$ sway-a-ways. The price has varied widely on this, from $50 to $130. - $30ish MR2 shifter - a cable shift setup. (you can do it yourself, all the way up to Ian's kit which is high $300's. The Boxster trans is pretty much the same as a Passat trans, so you could go that way. Mike Bellis can tell you what you need there. Only thing is...the adapter plate will cost you almost as much as a used Subaru or Audi engine... (IMG:style_emoticons/default/idea.gif) EDIT: I rambled on so long Mike already chimed in (IMG:style_emoticons/default/biggrin.gif) . |
mgp4591 |
Oct 8 2015, 07:53 PM
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#3
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914 Guru Group: Members Posts: 5,380 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region |
Mike, I'm surprised you haven't caught the full-on Subaru bug. You were one of the engine swap pioneers with that VR6 idea of yours. You could go Subaru engine connected to Subaru 5MT trans! A 2.5 maybe? Anyway, the cheaper way for a trans only is probably Subaru as Rich said, but either isn't too bad for the 5 speed. Needs: FWD Subie trans - pre-1996 - OLD and cheap, hard to tell the condition due to age, but at junkyards they usually let you swap them out if they are bad OR (more common) AWD trans - You would have to buy the locking spool for the AWD one but could easily make the end plate and sell the center diff for $. At a junkyard you can get older ones for low $. Newer ones can be $$$. Make sure it's old enough that it has stub axles. Plus: - two "female" Subaru CV joints (used ones from NASIOC or Craigslist, I got mine for $50). Green in color usually. - labor to re-spline a set of 914 axles re-splined on one end for the Subaru CV. This is as good or better than the $$$ sway-a-ways. The price has varied widely on this, from $50 to $130. - $30ish MR2 shifter - a cable shift setup. (you can do it yourself, all the way up to Ian's kit which is high $300's. The Boxster trans is pretty much the same as a Passat trans, so you could go that way. Mike Bellis can tell you what you need there. Only thing is...the adapter plate will cost you almost as much as a used Subaru or Audi engine... (IMG:style_emoticons/default/idea.gif) EDIT: I rambled on so long Mike already chimed in (IMG:style_emoticons/default/biggrin.gif) . I'm not sure which axle is stronger- has anyone used a resplined Suby axle instead of the 914? One might think that the years have made a stronger axle to use. Then again, maybe it's not long enough? (IMG:style_emoticons/default/confused24.gif) I haven't heard that line in years... |
Chris H. |
Oct 8 2015, 08:09 PM
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#4
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Senior Member Group: Members Posts: 4,031 Joined: 2-January 03 From: Chicago 'burbs Member No.: 73 Region Association: Upper MidWest |
I'm not sure which axle is stronger- has anyone used a resplined Suby axle instead of the 914? One might think that the years have made a stronger axle to use. Then again, maybe it's not long enough? (IMG:style_emoticons/default/confused24.gif) I haven't heard that line in years... Well I won't say they are too short, but they aren't the right length (IMG:style_emoticons/default/biggrin.gif) . Much easier to use the 914 axles...HIGHLY unlikely you'll snap an axle. The CV joint will be more than happy to break first. Trust me. |
mgp4591 |
Oct 8 2015, 09:08 PM
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#5
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914 Guru Group: Members Posts: 5,380 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region |
I'm not sure which axle is stronger- has anyone used a resplined Suby axle instead of the 914? One might think that the years have made a stronger axle to use. Then again, maybe it's not long enough? (IMG:style_emoticons/default/confused24.gif) I haven't heard that line in years... Well I won't say they are too short, but they aren't the right length (IMG:style_emoticons/default/biggrin.gif) . Much easier to use the 914 axles...HIGHLY unlikely you'll snap an axle. The CV joint will be more than happy to break first. Trust me. And you haven't had any strength problems using the stock 914 cv joints with the power applied by the mighty EG33? And whose axles are you using? |
Chris H. |
Oct 9 2015, 02:43 PM
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#6
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Senior Member Group: Members Posts: 4,031 Joined: 2-January 03 From: Chicago 'burbs Member No.: 73 Region Association: Upper MidWest |
I'm not sure which axle is stronger- has anyone used a resplined Suby axle instead of the 914? One might think that the years have made a stronger axle to use. Then again, maybe it's not long enough? (IMG:style_emoticons/default/confused24.gif) I haven't heard that line in years... Well I won't say they are too short, but they aren't the right length (IMG:style_emoticons/default/biggrin.gif) . Much easier to use the 914 axles...HIGHLY unlikely you'll snap an axle. The CV joint will be more than happy to break first. Trust me. And you haven't had any strength problems using the stock 914 cv joints with the power applied by the mighty EG33? And whose axles are you using? I definitely have had issues with the 914 CVs. Snapped two of them, but they were worn out. My previous 1.8 with fairly chattery clutch was just so weak it could not push them hard enough to snap them. Many people are running fine on conversions with good 914 CVs. I switched to 944, but only because I had the opportunity to. I used sway-a-way axles but they aren't required either. |
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