MGB & GT Forum

When I separated the engine from the transmission, the bushing at the front of the transmission shaft (where it mates into the engine) fell out on the floor. I didn't think much of it until I read elsewhere that this bushing should be a tight fit and requires a special puller to get it out. Now I'm concerned. Is this ok? Of course I'm going to replace the bushing, but it it normal for it to be loose in there?



Edited 1 time(s). Last edit at 2014-04-24 11:20 PM by gofastandfalldown.

Loose - no
I would use the term snug or just right.
Before installing, make sure it fits smoothly on the motion shaft.
No "special" tool needed to remove. If it's tight, I compress some grease into the hole with a dowel and it pops out.

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"It is a mistake to try to look too far ahead. The chain of destiny can only be grasped one link at a time."
Sir Winston Churchill
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I worked on MGB engine not long ago, that had a pilot bushing fall out like this, but a new one fit back in there as it should, hopefully you will have the same luck.

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Hap Waldrop
Acme Speed Shop
864-370-3000
Website: www.acmespeedshop.com
hapwaldrop@acmespeedshop.com

If you are pointing to the so-called "spigot bush": this one is sitting in the crank, slightly pressed in. Normally getting it out means using a "reverse puller", but if it falls out by itself, just put a new one in. Previously soaked in oil for 24 hrs if possible. In most cases this bush hardly wears and will not fall out either, just a smear of grease on the driveshaft end will be sufficient for it not to seize. Stories on the need to renew the spigot bush vary: most people do not see the need, while others (like Porter) state always replace on any clutch job.

The only certainty for replacing it is, when the clutch "squeals" when free, because the drive shaft and bush no longer "like each other". The bush is made of bronze, the shaft of hardened steel, so this is rather seldom. Even with zero grease these materials will not bind to each other easily

PS On my last clutch job in 2013, I had the new bush ready and put it in oil for many days beforehand. But the old one was held firmly in place and looked OK. So I left it in.
I guess this bush of my B will have over 70.000 miles behind it and is still going strong



Edited 2 time(s). Last edit at 2014-04-26 03:20 AM by Donthuis.