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Old 09-25-2007, 01:33 PM   #16
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That motor in the picture is done.

ya...but thas not my motor...my motor is now where near as damaged as the one shown...
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Old 09-25-2007, 06:13 PM   #17
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okay guys ran into a new problem tonight. I got the wrist pin off, then while attempting to put it back on i bent it and then lost it.. I have two questions where can I find a replacement (will any work off any motor i have a force 26 lying around I could use one off if possible)? And what is the easiest way to put the wrist pin back on? Thanks for the help guys.

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Old 09-26-2007, 02:51 AM   #18
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Just put 1 end of the clip into the slot inside of the hole.
Hold it down with the thumb tightly covering the part that is already in the slot.
Next use your other thumb to push the rest of the clip into the hole.
Now part of the clip most probably would not be inside the slot. While still holding it down tightly, push the whole clip into the slot with a tweezer pointed end. Make sure the whole clip is seated into the slot snugly(you should be able to see only half of the clip thickness exposed).

Important point to note when re-assembling :-

Make sure the con-rod oil hole(the tiny hole above the big end bushing, along the rod shaft) is facing the crescent shape(intake side) of the piston.
Make sure the piston crescent shape side is facing the front(carb) of the engine.
Make sure the piston is at TDC(upper position) before reinstalling the back cover.
Make sure the cooling head shims are cleaned of any sand or dirt before refitting.
Make sure the cooling head screws are tighten in a crisscrossed sequence.
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Old 09-26-2007, 03:16 AM   #19
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Next week the post will be "engine destroyed by wrist pin clip"
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Old 09-26-2007, 08:42 AM   #20
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Make sure the piston is at TDC(upper position) before reinstalling the back cover.
I've never heard of that before, what difference does that make?
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Next week the post will be "engine destroyed by wrist pin clip"
Been there, done that. Makes a really cool noise. Blipping the throttle through a rhythm section, "briiip briiip briiip BRAAACK" flameout.

Everyone kinda looks around as the car rolls to a stop, "well that didn't sound very good" Looked like the clip worked its way up past the piston and into the top end, then the piston beat it into the cylinder head about 900 times. New piston, new sleeve, new conrod, good thing we bought 4 pairs of those wrist pin clips, and scraped and filed off as much of the damage to the head as possible.
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Old 09-26-2007, 09:42 AM   #21
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If you dont have the piston at TDC you'll do what i did and mess up the piston skirt trying to put the backplate back on.

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Old 09-26-2007, 09:44 AM   #22
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Ahh, that way.

'Round here we call that "not paying attention to what you're doing"
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Old 09-26-2007, 09:56 AM   #23
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yeah it's one of the most expensive mistakes i've made
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Old 09-26-2007, 10:00 AM   #24
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See, I'd lower the backplate in until it stopped moving, then go "whoops, my bad" and spin it around so the piston skirt clearance is on top. I take it you went with the "beat it in with a hammer" technique instead?

With the exception of the crankshaft going through the bearings these engines should all but fall together. If something doesn't fit, you're probably not doing something right.
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Old 09-26-2007, 10:44 AM   #25
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lol hammer,thats taking it a little too far. It was more taking my palm to it and the thin aluminum broke. and to go along with topic I too have a question, and that would be will any wrist pin clip from a .21 motor work because frankly I dont think a person should have to pay 11 bucks for less material than whats in a paperclip.
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Old 09-26-2007, 10:55 AM   #26
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Quote:
Originally Posted by vroom88 View Post
will any wrist pin clip from a .21 motor work because frankly I dont think a person should have to pay 11 bucks for less material than whats in a paperclip.
Maybe, don't see why it shouldn't as long as the wire diameter is close enough.

Boy am I glad I'm racing smallblocks now. The wrist pin on the 12CV I have in my GT2 isn't even held in, it just has two little teflon caps at each end. As long as it stays inside the sleeve it can't go anywhere, and NO WRIST PIN CLIPS!
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