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Old 07-12-2019, 08:17 PM   #1
Cwazywazy
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Default M46 differences?

I thought all 240 M46s were the same except for the overdrives.. Guess not. Swapping out my '86 M46 for an older model (not sure of year) with speedo drive and ran into an issue with the clutch fork.. The new trans came with one that I've never seen and when I put in the '86 fork it only has about half travel. I'm very confused. It looks like the '86 bell housing has more depth..

The new trans did come with a throwout bearing but it's wasted and I don't know if it would even work with my clutch.. (Dogdish M47 flyhweel)

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Old 07-13-2019, 06:10 PM   #2
planetman
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If you did everything correctly you shouldn't have problems.

AFAIK, there are only 3 bellhousings for all of the SOHC 4 cylinder engines that are for the M45 and M46.

These is an early bellhousing that only fits the early M45 and M46 with course spline input shafts made through 1978. The other 2 bellhousings fit the later M45 and M46 with fine spline input shafts and are basically the same. The only difference is whether the bellhousing has the notch at the top to go around the CPS sensor which is mounted on the back of the block.
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Old 07-13-2019, 06:30 PM   #3
VB242
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The top clutch fork looks bent
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Old 07-13-2019, 06:51 PM   #4
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I just swapped bell housings. Input shafts are the same but the top clutch fork in that pic only had about half travel in the new trans before I swapped housings.
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Old 07-13-2019, 07:20 PM   #5
dl242gt
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The earlier style is better. Those later clutch arms are not as strong and can bend easier than the early ones. The throwout bearing is almost the same just the early version has guides to slip onto the the pins on the arm. Make sure you grease the splines and throwout bearing guide tube with high temp grease.

Last edited by dl242gt; 07-13-2019 at 07:21 PM.. Reason: a correction
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