1. Although it's possible to bolt the early nosecone onto a late trans, and people do it every day and get away with it, it's not a good idea. The mainshaft bearing design is different, and the early nosecone can interfere with the proper rotation & lubrication of the late bearing. 2,3. The `73-up mounts are far more compliant making them poorly-suited for any kind of performance application. I might go to that much trouble to get away from them, but never to convert TO them.
I put an AT trans in my daily-driver `69 years ago using an aftermarket urethane adapter mount and have been pleased with the results. I was concerned that it might transmit too much drivetrain noise into the chassis but that proved to not be an issue. The fit of the metal sleeves into the urethane block was a little loose for my liking (a wrap around the O.D. with metal-foil duct tape fixed that). I also needed to relocate the ground strap since it won't fit gracefully over the recessed hole in the urethane mount - it's now between one of the sidecover nuts and one of the rear mount-to-bracket bolts. Bugpack P/N 6519-21 http://www.thesamba.com/vw/classifieds/detail.php?id=625590 BTW, be nice to Reverse. `74s have what is arguably the worst/weakest design for the operating mechanism. Keep a light rearward pressure on the shiftlever when backing - once they start to pop out the teeth wear badly and it's all downhill from there. Excellent trans otherwise. Overall ratio in 1st/2nd/3rd is 6% taller than on your `69 trans, you may notice it's a little doggier on takeoff esp. on an uphill standing-start. The lower 4th ratio compensates for most of the R&P difference so it's only 1.2% taller (around 40 less RPM on the highway). --- On Fri, 9/5/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> > Subject: [vintagvw] Late IRS Transmission Swap Into 69 > To: [email protected] > Date: Friday, September 5, 2008, 8:30 PM > Hi All, > > I want to use a trans from a 74 in a 69 Bug because it is > literally a 0 mile unit that was only used up till now in a > VW training center many years ago.? Looking for > suggestions?? Should I: > > 1. Swap nose cone from 69 trans onto 74 trans and use 69 > mounts?? Seem to recall later mounts were stronger? > 2. Remove 69 front mount with studs pointing towards the > back that is currently welded to the 69 pan, and weld the > piece with the studs pointing down that is used to mount the > 74 front mount?? Is that piece sold anywhere? > 3. Rebuild a 74 pan(have one) and put the 69 down on that? _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
