cryptnix Posted May 23, 2004 Report Share Posted May 23, 2004 Don't dis me on this idea. Like I say in my "sig" I plan on replacing my 3100 with a 3800 l67 ... the question is i got my hands on a 282 with 70k on it ... Can someone tell me what as far as electrical I would need to change and do I need a new flywheel? Basically I'm playing the hit and run game here. I would SERIOUSLY love to have 5 gears .... vs an auto ... and perhaps get that HP that i've lost and not have to worry about shit other than clutches... EDITED: boy it sucks to be tired Quote Link to comment Share on other sites More sharing options...
Canada Posted May 23, 2004 Report Share Posted May 23, 2004 Yep....you can do it........some Feiro and L body owners have done it. Yes you need to replace the flexplate with a flywheel.........and you need to wire the PRNDL switch into N. Theres a few other things....but thats the basics. Quote Link to comment Share on other sites More sharing options...
skalor Posted May 23, 2004 Report Share Posted May 23, 2004 That and the fact that he has to change the whole pedal assembly since his car most likely won't have the bracket for the clutch pedal to bolt in, since it's a '96. A 5 speed swap is not hard, but it takes planning to make sure you have everything you're going to need. Plus, the fact that you have a 3100 makes it even harder. I don't know of anyone that can reprogram your computer to work with a 5 speed (maybe Dave at DHP). You'd have to revert back to the MPFI harness and computer. If you stick with the 3100 auto computer you're going to have some driveability issues like stalling and bucking. I would not trust a 282 behind an L67. It's probably fine is a lighter car(i.e. fiero), but in a W-body it just probably won't last. Quote Link to comment Share on other sites More sharing options...
Baddflash Posted May 30, 2004 Report Share Posted May 30, 2004 Flywheel and everything off the 3.1L will bolt to the 3100. The rewiring is simple but your problem is the sfi and getting it reprogrammed to work with the 5-spd. So your only other option is to go MPFI which I imagine is as much work as going L67, so it's up to you. Not sure how the 282 would hold up on the L67, but I know I've seen guys with L67/5-spd camaro's so that may help with programming. Quote Link to comment Share on other sites More sharing options...
excelsior Posted May 31, 2004 Report Share Posted May 31, 2004 from what ive heard 282 isnt holding up to the l67 Quote Link to comment Share on other sites More sharing options...
NOHC_WBody Posted May 31, 2004 Report Share Posted May 31, 2004 Yup. Torque isn't what would kill the tranny, it would be all that torque trying to pull a W as well. As said before, a lighter car(like a Fiero)? Yeah, maybe, but I wouldn't be doing any 5K clutch drops at the strip with one & expect the gears to still love me. Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted May 31, 2004 Report Share Posted May 31, 2004 So your only other option is to go MPFI which I imagine is as much work as going L67, so it's up to you. Its actually easy. Just use a 3.1L ECM and you'd have MPFI. However.....some tuning would need to be done, since the 3100 heads are a bit different and dont like the MPFI on stock programming. I mean, it'll run fine, but you wont be getting the best economy or power possible Quote Link to comment Share on other sites More sharing options...
Cornerdealy Posted May 31, 2004 Report Share Posted May 31, 2004 so, basically the 3100 is a bastard engine (especially mine with OBD II). Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted May 31, 2004 Report Share Posted May 31, 2004 :?: the 3100 was never available with a 5-speed, and there really is no easy way to program the OBD-2 PCM for use with a 5-speed (or program it at all for that matter). so in order to use the 5-speed with the 3100 you'll need to run the 3100 engine on older MPFI OBD-1 batch fire electronics and a 3.1/5-speed memcal or a memcal with a custom "chip". Quote Link to comment Share on other sites More sharing options...
Major_Tom Posted June 9, 2004 Report Share Posted June 9, 2004 from what I've been told, there is a OBD2 5-speed "mode" that you can put any OBD2 computer into, and it no longer will try to control the transmission. Maybe I'm just smoking crack though. Quote Link to comment Share on other sites More sharing options...
BIGBULS Posted June 9, 2004 Report Share Posted June 9, 2004 That's what Canada was trying to point out............. Yet these guys are going on about "you have to go to MFI" etc.......... Strangely enough however, I can think of three Beretta's right off the top of my head that've done 5 speed swaps into 3100's............ALL are running SFI and ALL have done a simplerewiring of the PRNDL switches. But yes, you DO have to swap in the newe shift linkage, pedal assemby, tranny mount etc etc........ Quote Link to comment Share on other sites More sharing options...
skalor Posted June 9, 2004 Report Share Posted June 9, 2004 I agree with BIGBULS that you can probably use the SFI computer. Like I said in my earier post...I would ask Dave Buckshaw at DHP if he can reprogram your SFI computer. If I needed my SFI computer reprogrammed I would just get a MPFI harness and do everything myself. I think his custom tunes cost upwards of $350(at least that's what my brother's '92 S-10 3800 SII computer cost). Not a bad price considering he's really good at what he does. I would just rather do it myself, and that's why I suggested reverting back to MPFI. Then again, a lot of OBDII tuning programs have been coming out lately so who knows. 8) Quote Link to comment Share on other sites More sharing options...
brian89gp Posted June 10, 2004 Report Share Posted June 10, 2004 That's what Canada was trying to point out............. Yet these guys are going on about "you have to go to MFI" etc.......... Strangely enough however, I can think of three Beretta's right off the top of my head that've done 5 speed swaps into 3100's............ALL are running SFI and ALL have done a simplerewiring of the PRNDL switches. But yes, you DO have to swap in the newe shift linkage, pedal assemby, tranny mount etc etc........ Sure, you can rewire the PRNDL switch but it still won't run like a true tuned 5spd would. The PRNDL just keeps the ECM happy and reduces the tendency for stalling. There are major differences in IAC and throttle follower tables between an auto and 5spd that the PRNDL trick does nothing for. On a 94+, its not fun. To do it properly you have to remove the entire dash. http://www.brian89gp.com/transmission/5spd.htm Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.