« on: Dec 25, 2004, 01:51:08 PM »
Marlin,
Is it possible to put an R154 input shaft into a R151F trans? If so, will that change the gear ratios of the trans?
Thanks
ccannon
It is impossible to just replace the input gear only because it is so much smaller.
It is so much smaller in diameter, that it would not even touch the front constant run teeth on the factory countershaft.
To obtain the 5.15 ratio, the R452 uses the turbo first gear set, but a greater countershaft underdrive by decreasing the input gear diameter, and increasing the countershaft diameter.
This combination will effect 1,2,3,5, and reverse ratios.
Logged
1980 Toyota - 1997 3RZ-FE 2.7l Engine, Turbo R151F 4.31:1, Triple Turbo Marlin Crawler Billet (2.28x4.70x4.70) = 1,148:1 Crawl Ratio, Marlin Crawler Twin Stick and Short Throw Shift Kits, 30mm H/D Output Shaft, High Angle Drive Lines, 5.29:1, ARBs, High Pinion Front, 25mm HD Billet High Steer Kit, 6 Pin Locking Hub Bodies, 86+ Wide Rear End, V6 3rd member, Chromolly Axles all around, 37" IROKs with Beadlocks, York onboard air - Rollbar air tank, Premier Power Welder, Marlin Crawler 4" USA-made Leaf Springs, Bilstein Shocks, et cetera....
