 915 Transmission Questions, Hmmm.... |
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| iiibdsiil |
 Dec 16 2005, 03:57 PM
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#1
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Needs Door Locks  Group: Members Posts: 605 Joined: 19-November 03 From: Tampa / Boca Raton, FL Member No.: 1,362  |
What's the deal with the 915 transmissions? My 901 in with my 3.2 is screwed up, and I could get it repaired. Or, I could just upgrade and save myself some more headaches in the future.
What's a good price for a 915? Do I need to change anything to mate it to my 3.2? What years for the 915? Anything special I need to know? Yes, I did a search, but I couldn't find much. Thank you in advance guys! |
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Replies(1 - 19)
| lapuwali |
Dec 16 2005, 04:14 PM
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#2
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
The chief issue with the 915 is getting a shift linkage to work. You can buy your way around the problem with WEVO parts. The 915 should bolt up to a 3.2, since that's what was in the 911 to start with. However, you'll need to swap back to a 915 flywheel and clutch from the modified flywheel you're running now.
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| olav |
Dec 16 2005, 04:26 PM
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#3
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Senior Member Group: Retired Members Posts: 1,107 Joined: 28-December 02 From: Los Gatos, CA. USA Member No.: 34 Region Association: None |
What's screwed up and how did you do it? |
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| East coaster |
Dec 16 2005, 04:37 PM
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#4
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Senior Member Group: Members Posts: 1,687 Joined: 28-March 03 From: Brigantine, NJ Member No.: 487 Region Association: None 
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Bring $$$$
I'm up to 9K so far and still don't have shift linkage! |
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| GeorgeRud |
Dec 16 2005, 04:45 PM
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#5
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
I switched to the 915, and have been very happy with it. I'm just running a 2.7, but am hoping to up that to a 3.2 or 3.6 this winter. The WEVO kit seems to be the best way to go, and the transmissions are pretty strong. You should be able to find a 915 for ~$1000 or less, but by the time it's rebuilt, the ring and pinion flipped, speedometer magnet ring pickup modified, etc., etc., it does run into some money.
I used the Vellios kit with good luck, but it did take a lot of car and measuring to get the linkage to work well. It really shifts nicely though, and I don't have to worry about ripping up the old 901 trans any more. Good Luck with your project! |
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| LvSteveH |
Dec 16 2005, 04:52 PM
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#6
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I put the Poor in Porsche Group: Members Posts: 1,080 Joined: 22-April 03 From: Las Vegas, Nevada Member No.: 600 |
Not to rain on anyone's WEVO inspired parade, but there are plenty of guys running around with home made linkage setups that work fine. It's just a little geometry, and small threaded rods with heim joint ends to actuate the gear selection properly. I know for a fact that several successful racers are doing just fine with it. It takes more time to set up initially, but any 915 with the ring gear flipped with work.
(IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif) |
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| GeorgeRud |
Dec 16 2005, 04:59 PM
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#7
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
I'd agree, the most difficult step was to get the linkage just right. Take the slop out of all the bushings and have the right sized metric tubing, and it works just fine.
If anyone made the side shifter parts available by themselves to fit a 915, a lot of money could be saved. I had to look long and hard to get the Vellios parts, but when we set up the transmission well, it worked great. It just seems that WEVO has done a lot of your homework for you, making it a more or less bolt in sort of setup. I personally enjoyed making up the linkage myself! |
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| jim912928 |
Dec 16 2005, 08:09 PM
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#8
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Senior Member Group: Members Posts: 1,485 Joined: 8-January 04 From: Granger, IN Member No.: 1,536 Region Association: Upper MidWest |
Can anybody show us some pics of the "home made" solution? I'm keeping my 3.2l matched to it's 915..so I have to either do the wevo thing or maybe make my own? How did you fab the tranny mounts? Is it hard to flip the ring and pinion? What do you have to do for the speedo?
Jim |
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| John |
Dec 16 2005, 08:22 PM
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#9
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
Pic 1
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| John |
Dec 16 2005, 08:23 PM
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#10
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
pic 2
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| John |
Dec 16 2005, 08:24 PM
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#11
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
pic 3
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| jim912928 |
Dec 16 2005, 08:41 PM
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#12
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Senior Member Group: Members Posts: 1,485 Joined: 8-January 04 From: Granger, IN Member No.: 1,536 Region Association: Upper MidWest |
John...i should come and see this setup sometime. I work for harley davidson so I'm there at the kansas city plant occasionally.
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| rick 918-S |
Dec 16 2005, 09:03 PM
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#13
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Hey nice rack! -Celette Group: Members Posts: 20,473 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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Really cool!
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| John |
Dec 16 2005, 09:46 PM
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#14
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
Um....
This is NOT my car. I took pics of it at Heartland Park in Topeka last summer. I liked what he did and plan on duplicating it on our future race car. I made some hand sketches and was going to draw it up and make me a BOM for the components needed, but so far I haven't had the time to reverse engineer it. (The stuff is still buried in my pile of projects to do on my desk... I currently have a Vellios kit installed in the track car and it works excellent. I also have plans on converting another 915 with a second Vellios kit I have obtained. (This second will go in my street car currently slated for a 3.2 transplant when I get all my parts together. It will happen before spring. If you are in the area (from HD, you could get to my house in less than 30 min.), feel free to contact me. Last summer there was a second car with a home made linkage, but I liked this first one better. |
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| iiibdsiil |
Dec 17 2005, 09:58 AM
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#15
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Needs Door Locks Group: Members Posts: 605 Joined: 19-November 03 From: Tampa / Boca Raton, FL Member No.: 1,362 |
Drag racing (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) 18 years old at the time, what did you expect? (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) Thanks guys, I didn't realize the conversion was so much work and money. I might start pricing it out though. Post more pictures! |
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| rick 918-S |
Dec 17 2005, 10:12 AM
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#16
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Hey nice rack! -Celette Group: Members Posts: 20,473 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region
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I'm confused.. What costs so much? (IMG:http://www.914world.com/bbs2/html/emoticons/cool_shades.gif) I just went to car-part.com and did a search. Used boxes averaged $ 1250.00..... (IMG:http://www.914world.com/bbs2/html/emoticons/cool_shades.gif)
What's involved in flipping the ring gear? (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) Is the starter location the same as the 901-914 box? (flywheel diameter..?) (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) Can you use the box on a 4 cylinder with a a stock flywheel? Where can we find out about gear ratio's? I need a "H" gear for 5th. Or something like it. I'm thinking it will cost me a bunch of money to go through my stock box, maybe I should do this.. (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) Is the box longer than a stock 914 box? |
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| J P Stein |
Dec 17 2005, 10:42 AM
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#17
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Dunno bout youz guys, but I saved those linkage/mount pics to my files.
I have more fabricating skills than money. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| rick 918-S |
Dec 17 2005, 11:02 AM
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#18
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Hey nice rack! -Celette Group: Members Posts: 20,473 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region
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(IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif) I did the same thing! (IMG:http://www.914world.com/bbs2/html/emoticons/aktion035.gif) |
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| brp914 |
Dec 17 2005, 01:14 PM
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#19
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Unregistered |
freshen/rebuild = several $1000's wevo = $2000 (I'm goin' this way - more $ than fab skills here) axles/cv = several $100's 915 style shifter = several $100's tranny mounts exhaust/muffler (wevo will interfere w/stock muffler) shift linkage clutch/flywheel/clutch linkage electronic speedometer starter flip r&p modify side cover for speedo tb diff? = $1500+ I'm in process now - will post soon... |
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| rickyhgarcia |
Dec 17 2005, 01:58 PM
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#20
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UPS truck is here... Group: Members Posts: 293 Joined: 13-June 04 From: Miami, Florida Member No.: 2,198 |
I bought my 5th H gear from Brad Mayeur ( 914ltd@earthlink.net ) for about $300.00. |
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