removing piston pin (wrist pin)

TDGKORN · Post by **TDGKORN** » Mon Mar 14, 2005 6:31 pm

I started braking down my extra block yesterday, and had to stop when I got to pulling the wrist pins out. Is there a way to get them out, besides the remover tool?

Just a little hint to people that can't find a 14mm hex wrench.
A bolt with a 14mm head and vise grips work great.

Thanks
Troy

P.S.
the block still has cross hatching after 200K+

entirelyturbo · Post by **entirelyturbo** » Mon Mar 14, 2005 7:17 pm

Haynes says make your own tool, take a long metal rod and bend it just enough to grab the piston pin at one end, then bend the other end at a 90º angle so you can hit it with a hammer, and this way you should be able to yank the pin out...

TDGKORN · Post by **TDGKORN** » Mon Mar 14, 2005 7:20 pm

I'll try that tonight, I think I have some rods that would work.

Anybody else have any ideas?

I know I'm not the first to remove the pistons in this engine.

Troy

vrg3 · Post by **vrg3** » Tue Mar 15, 2005 2:53 pm

Ask Douglas Vincent. I remember him mentioning something about building some kind of tool to do it. I don't know if it's the same thing the Haynes manual describes or not.

TDGKORN · Post by **TDGKORN** » Tue Mar 15, 2005 3:49 pm

I tried for over an hour last night, but couldn't budge them.

Please Help.

vrg3 · Post by **vrg3** » Tue Mar 15, 2005 3:54 pm

Send Douglas a PM if you haven't already...

Matt Monson · Post by **Matt Monson** » Tue Mar 15, 2005 8:30 pm

I made my own tool from a clothes hanger. But if the engine has been overheated or is super old, they can stick pretty bad. If you can't pull them out, you can actually push them in far enough to get the piston out and then crack the block with the pin still in the rod. I had to do this on 2 of them on my EJ25.

We will be doing a tranny swap at my place on Saturday. If you are coming to town and want to throw your block in your trunk and bring it by, feel free. Just call me to give me a heads up first...

douglas vincent · Post by **douglas vincent** » Tue Mar 15, 2005 8:57 pm

I called him this morning and hopefully he will be able fabricate the tool I described over the phone.

TDGKORN · Post by **TDGKORN** » Tue Mar 15, 2005 9:06 pm

Thanks guys

I'm going to try and make the tool douglas described to me tonight.

Matt
I won't be needing the other cluster. I mixed the parts I needed from the two to make a good one.
I'll call if I need help with the piston pins.

Thanks
Troy

hackish · Post by **hackish** » Wed Mar 16, 2005 2:27 am

I've made several tools successfully in the last few years. I've used a TIG rod slightly larger than a coathanger but found it bends too easily. I even tried hardening it a little to no avail.

I took a small piece of threaded rod and put a low profile nut on it. That worked the best because I can put a big rubber weight on the other end with a nut and washer to use it as a slide hammer..

I took some rod and ground a groove into the edge. This one didn't work well on the pins but I still use it to remove dowels on heads I port.

I also welded a small washer on a piece of rod. This worked well. (Gave that one away).

-Michael

TDGKORN · Post by **TDGKORN** » Wed Mar 16, 2005 3:46 pm

I made the tool douglas described last night.
It worked like a charm.
If I can remember I will take a pic of it for reference.

Thanks to all how helped

Troy

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removing piston pin (wrist pin)

removing piston pin (wrist pin)