My wrist pins had to be hammered out?

[Bugzlife]

I had top hammer out all four wrist pins, using a scoket wrench, I thought the wrist pins were supose to be a slip fit?

1.does this mean they are bent, or trash?
2.can I still use the rods, and pistons with new wrist pins?
3.the wrist pins had an orange or rust colared strip on them, where the rod bearing center oil hole would be (assuming)

the engine's main bearings show signs of oil starvation, and down to the copper in some places

4. do you think the crank shaft is bent?
this is a used stock 1600 dual port came out in "running" condition out of a sedan
reason Im splitting is the rear-main is moving in the case.

[Rescue912]

They can be a pain sometimes. I have had people swear they heat the piston with a hair dryer and even the most stubborn ones will push out by hand but I haven't been so lucky.

This always works, just be careful of the wrist pin bushing if you think you are able to reuse them. Chances are if they were starved then they need rebushed anyway:



I doubt the crank is bent but if it was starved then it probably needs turned.

[Bugfuel]

Regarding the wrist pin bushings: this is normal. They are slip in tight when new, but with age they collect some bronze from the bushings as you described, and that makes them tight anywhere else but at the exact position where they have been rotating (and collecting bronze) in.

Sand the colored ring off with emery cloth, very fine wet-sanding paper, and they will once again slip in with ease. The bushings will eventually need to be replaced, and honed to precise fit (to new wrist pins) if they are very old. The pin shouldn't rock noticeably when it's pushed through the bushing.

Do not use a hammer. (high risk of cracking a piston) Build a puller instead, like in the picture above.


Jan

[Bugzlife]

Yea, good Idea.I was wondering if there was a specal tool, but I could make one like you did, next time I'll use my propane torch and heat them up. I think I'm going to get new rods, I'll have an expert look at the crank, and the case, to see if they are scap metal.

[500LbGorilla]

Have the rods checked.. you might be surprised. That's a good chunk of cash you can save if they are ok.