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Specializing in the 3g CSM
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PostPosted: Mon Feb 06, 2017 5:35 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
all right here is the tear down pics
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all taken apart
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yep it will need to go .020 over
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stains on crank from sitting, wow it really looks nasty but its totally smooth.
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it all checks out nicely and no scratches
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_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


Last edited by Keane on Thu Feb 09, 2017 12:17 am, edited 1 time in total.

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PostPosted: Wed Feb 08, 2017 10:45 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
Here's that balance shaft which spun bearings.
The rear bearing came out of the journal and this shaft was simply spinning in the block with no bearing. (Notice the blue and sheared off metal.)
The front bearing is completely seized to the shaft ( notice how the bearing is being squeezed out)
Image

_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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PostPosted: Thu Feb 09, 2017 12:19 am 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
Done with disassembly and diagnosing onto the rebuild and mods.
Here is the block oil port mod
massaging the hump down a bit and polishing the channel per jafro videos

Image
Image

_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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PostPosted: Thu Feb 09, 2017 11:53 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
I'm kind of jumping around here on the assembly phase,
Everything is back from the machine shop.
Here's how the crank polished up. All the journals are uncut only a polish and all are in spec.

The crank turned out great but look at all that junk i'm washing out out it. These pics are round 3 of brakeleen + compressed air
and the debris in the pic is only a 1/3rd of what came out the first two times.

I want to thank to Lancerman who over a year ago provided me with a solution on how to clean behind the infamous "crank balls"
without removing them. its in the 3rd pic (bent spray tips).

If i ever do this again i'm removing the balls no matter how much of a pain in the ass. i do have a tig welder now so i bet i could do it.

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_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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PostPosted: Sat Feb 11, 2017 11:00 am 
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The Silent Administrator
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Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9440
Location: Ottawa, ON, Canada
Super glad you were in contact with lancerman and you guys were on the "ball" because I was going to suggest removing the balls for cleaning too.

Should be better knowing everything is "super" clean when it is all assembled and fired up.


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PostPosted: Sun Feb 12, 2017 5:53 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
Removing them isn't easy. I had the machine shop fool around with trying to centerpunch and drill them out. They weren't successful and said it wouldn't be worth the cost to keep trying. They were just being honest.

I've read you have to try to tack weld something to them and then slid hammer them out. I wasn't going to have them attempt that.

I now have acquired another shortblock with a pretty trashed crank I may practice on that someday

_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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PostPosted: Sun Feb 12, 2017 6:38 pm 
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CSM Junkie

Joined: Sat Dec 20, 2008 7:45 am
Posts: 503
Location: tampa
http://www.evolutionm.net/forums/evo-en ... n-buy.html


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PostPosted: Sun Feb 12, 2017 9:25 pm 
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The Silent Administrator
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Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9440
Location: Ottawa, ON, Canada
^^^ That would have been great to know about before I put my head back on, years ago.
Great info!


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PostPosted: Mon Feb 13, 2017 11:19 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
Dang another thing to buy.....
Thanks for the info

_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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PostPosted: Tue Mar 28, 2017 11:38 pm 
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CSM Junkie

Joined: Sun Sep 02, 2012 9:52 am
Posts: 552
Location: Astoria OR
keeping it going here....

After the crank was clean i plastigauged it and installed it with new acl bearings.
It checked out on spec. the measurements pre machine shop were spot on so i didnt expect the plastigauge to be off
but its still good insurance to check after changes such as polishing the crank, new bearings, and adding main studs.
Next the stock but resized rods were installed as well.
Note the arp main studs and rods bolts as the only mod
Image
Image
Image
Image

_________________
Black 1989 Colt GT with 4g61t. 200k miles and climbing. Rebuilt 2.0 in the works.....
14b, 450cc's, 3" exhaust, small fmic, all running on megasquirt version: DIYPNP
White 1992 colt-vista wagon 2.4, awd, auto (daily)
Keane


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