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winter project; engine rebuild
Topic Started: Nov 1 2010, 11:36 AM (5,399 Views)
geo runner
Advanced Member
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well its been a while since i have posted anything but i have been building work benches in the garage and getting the wood stove hooked up. now that i have heat i have been in the garage everynight. last night i was able to get the axles pulled with no problem and that was the last thing i needed to do.... so tonite all i have to do is hook a chain up and pull the engine up out of there. i will try to post pictures this weekend.
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idmetro
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Very nice to have a heated shop. Just keep in mind you now have a source of ignition so be extra cautious when working on your fuel system, don't want to see you on the evening news...
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Jim-Bob
Junkyard Engineer

Looks like a nice setup you have there. It's always nice to work indoors.
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geo runner
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thanks jim-bob yeah i love the shop its awesome with the woodstove. idmetro i agree with you on needed to be carefull about the fumes. ok so here are a few pictures for you all.

this is the first engine i have ever pulled out of a car... i'm having a blast.
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here is the front side
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i installed new valves on the #3 and it only lasted a little under 5000 miles before it burnt up again. i think because i never put it in time after i was done.... :smackface ... i have a timing gun now
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crazy how small the block is

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here is the tranny that i just started to clean up

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engine bay needs cleaned up

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after christmas i will be able to send my head out to 3-tech. still dont know if i should try to do bottom end or just buy a short block.
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poorman1


Looks like you need to do some welding too
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geo runner
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Quote:
 
Looks like you need to do some welding too


poorman1 just curious where i could use some welding
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metroschultz
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Please just call me; "Schultz"

left frame horn.
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poorman1


The drivers side frame where the lower control arm mounts appears to be rusted through
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geo runner
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yeah i was going to sand it down and paint it... it is still pretty solid no holes just surface rust.
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geo runner
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here is another view

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geo runner
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ok everyone i know its been a while but money is hard to come by even having 2 jobs :shake

anyway i am ready to do the bottom end.... i have all the parts to put back together..... i need all the help i can get. snowfish i could use a few tips from you on painting the block. how did you do yours and not get paint inside the block? did you have the oil pan on when you painted yours?

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can the rings be installed without a tool? do i just use grease on everything or something more?

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i should have the head back from 3tech at the end of the month
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snowfish
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Basic GearHead

I painted the Engine block upside down on a piece of cardboard. Then used painters tape, and news paper, to mask everything off. Just enough to keep from painting the internals.

The Oil Pan was just painted upside down. No masking. Painted all the parts separately.

There's always going to be some over spray and paint creeping. The gasket surfaces can easily be cleaned with ScotchBrite & a little lacquer thinner, followed up by a clean rag. (careful not to drip on your new paint though) Some gasket surfaces only took a gentle scraping with a razor blade. Then a clean rag, with a little lacquer thinner, to finish.

I cleaned the daylights out of everything with a wire wheel in a drill. Then liberally wiped down with lacquer thinner. I ran a tap through every thread, too.

I would recommend using high temp engine primer as the base coat. Then two coats of high temp engine enamel. Appears to be holding up, quite nicely, so far.

The painting process is quite agonizing. Lots of waiting for coats to dry. Be patient. You have time. Don't set a schedule.

Another tip would be to make a handy engine stand.
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Makes assembly much easier.

Be sure to stab around, with an ice pick, on those frame horns. My drivers side looked to be only surface rust like yours. But after a couple poke threws, I knew they needed welding. Since the engines out, now would be the time. :popcorn
Edited by snowfish, Feb 16 2011, 05:32 AM.
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snowfish
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Basic GearHead

Before installing the Rings, be sure to check the end gap. Just take the blank ring and place it in the top of the cylinder bore. My 91 FSM spec is .0079 - .129. If they're too tight, they can be filed to spec. Mine were fine. Seems the cylinder bores don't wear much unless they've been really neglected bad.

I'm sure the rings could be placed on the pistons without a ring expander. I've done snowmobiles (600cc) without the expander. These are basically a 4 stroke sled engine. However, a ring expander is really cheap.
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They're worth every penny.

Assembly lube, like Lubriplate, is much better than grease. Thinner, but still very slippery, and will mix with the oil better at first fire. Again, pretty cheap & easy to apply. Use liberally on all bearing surfaces & seals. I even used it on the cylinder walls & piston skirts. But some will say a heavy oil (20W50) would the better answer.(for the pistons & walls)

A ring compressor will make inserting the pistons a lot easier too.
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Again, I've done snowmobile engines without a compressor. But they did not have the oil ring like our G10. I have a feeling that trying to get that bugger in, with out a compressor, would be a real wrestle! Either pick on up, borrow one, or rent one. You'll be glad you did!

Nice job! :cheers Looking forward to your progress. :popcorn
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geo runner
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thanks for your reply snowfish, i have already made myself a wooden engine stand like the one you made. i will go ahead and buy the ring expander and the ring compressor to make things easier i looked yeasterday @ the parts store and they only had the compressor and not the expander but i will keep looking.

i am wondering if your specs are going to be the same as mine.... i geuss they should be the same (.0079 - .129)

i wanted to take pictures when the bottom end was taken apart but my neighbor came over to help me get the crank gear off and then he took the rest apart and i didnt get to take pictures :(

now i am hoping i install everything correct. i have a haynes book but does not tell me how to install anything. i will reference all the pictures i can on this site and hope that will be good enough.

did you take a wire wheel to the block? i had mine hot tanked but still looks like :shit


Quote:
 
I painted the Engine block upside down on a piece of cardboard. Then used painters tape, and news paper, to mask everything off. Just enough to keep from painting the internals.



so if i paint my block upside down then fill in the rest with news paper, what part of the block did you use painters tape on. i would like to get the block painted this weekend and start on the installation.

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I ran a tap through every thread, too.



did you do this before or after the paint job (i need to get me a tap set any idea of the cost of one)

i know i have more questions for you but i cant think of any more right now, i guess when i get back in the garage and working on it they will come up.

thanks again



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snowfish
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Basic GearHead

I'm pretty sure the ring gap specs are the same. I'll take a peak at my 93 FSM when I get home if you like. BTW, the Real FSM, Field Service Manual for the right year, is invaluable! Great resource.

My block was hot tanked too. Still looked like crap. I drill wire wheel the daylights out of it. Lots of powdery oxidization on there.

I didn't fill the block with newspapers. I used the painters tape on all the gasket surfaces. (and not that neat either since I knew that I'd be touching up the over spray with the razor blade, scotch brite, & lacquer thinner) The newspaper is just to span the larger gaps. I suppose one could just use a bunch of tape to do it too.

I used an oil filter to mask that surface. Who cares if it gets painted? It's changed after first fire anyway. The oil sender was installed and taped to plug that hole.

Your 3Tech head will come in Beautiful! No need to adjust what Mike has done.

Holes were tapped after paint. The cleaned with compressed air.

Also I made sure that any Grounding surface was paint free. Like the alternator mounts & TBI ground. Just nice bare aluminum. Would hate to have that bites us down the road.
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