5J Pony Motor Crankshaft Endplay

Yes that is normal, right before it throws a rod and ruins the pony. You really need to fix that, it is running on borrowed time.

Do a search on this forum, there are several threads that deal with endplay/main bearings.

[quote="Garlic Pete"]That is very helpful, ag-mike. I got it clearly now.

I was sure I was wrong about using the JB Weld on the oil holes, but I couldn't imagine where you were actually using it. Your explanation about the field treatment of the blocks and the overall problem makes it completely clear. Your recommended procedure is:

Clean up any modifications such that the pin will seat with the head firm and in good contact with the block boss.
Loctite the pin shaft into the bore to give it the best chance of staying in.
Use a drop of JB Weld on each side of the pin head to further help bond and retain the pin head to the block boss, which it should be contacting well.

Very helpful and clear. I'll need to do this soon before my very low hour rebuilt pony becomes a boat anchor with extra ventilation holes!

Thanks again for the help,

Pete.[/quote]

thanks 4 ur hekp

I opened up a pony motor and found roll pins substituted for the problematic pins. Appeared to be working ok but I don't know how long it had been in service. Anybody able to comment on the alternative? Seems it would be ok maybe with some lock tite? Still would have the oiling function.

were the roll pins taller than the reservoir sides? the original pin with its tiny flange sets down low in reservoir and has its own oiling hole. seems to me it should been engineered more better to keep the pin in. back then it was only press fit....

I fixed mine with a brass washer. It does not have end play but have I caused another issue?

Yes that is normal, right before it throws a rod and ruins the pony. You really need to fix that, it is running on borrowed time.