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 This Winters Project 
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Location: Niagara Falls
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Post Re: This Winters Project
Looks like your having lots of fun 8)

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2010 SIM 2SS/RS A6
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Wed Nov 22, 2017 1:17 pm
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Post Re: This Winters Project
transamtom wrote:
Looks like your having lots of fun 8)


Well, its either putter around with something like this or suffer through whatever reality TV show my wife has on! Lol!

With that in mind I made good progress the past couple days!

Block cleaned up really well.

Imagereceived_10159856573995556 by Shane Hewitt, on Flickr

Any external fasteners got sandblasted.

Imagereceived_10159856577290556 by Shane Hewitt, on Flickr

It then got masked off and hit with a coat of paint.

Imagereceived_10159860728860556 by Shane Hewitt, on Flickr
Imagereceived_10159860735555556 by Shane Hewitt, on Flickr

I'll leave it for 24 hrs or so and hit it with another coat (I can see a few light spots).

After that is complete, time to hone the cylinders, take some more measurements, and order some parts!


Wed Nov 22, 2017 9:37 pm
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Pretty pleased with the results!

ImageE7E9B8DC-51B5-4E66-BE2D-877D7E486878 by Shane Hewitt, on Flickr


Fri Nov 24, 2017 8:42 pm
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The cleanup continues.

Image20171127_194832 by Shane Hewitt, on Flickr


Mon Nov 27, 2017 9:28 pm
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These are the next in my parts pile to get cleaned up, & the ones I was dreading doing the most (they don't fit in the deep fryer, Lol!)

ImageAs removed from engine by Shane Hewitt, on Flickr

Thought I'd try something different to clean these up so I sprayed them down with EasyOff oven cleaner and let them soak for about an hour and a half then rinsed them off.....

ImageCleaned by Shane Hewitt, on Flickr

Gotta say I'm beyond pleased with how easy they cleaned up.

After cleaning up the first one I measured the rod bearing clearance and found that they are also just a hair out of tolerance.

All the tolerances I've measured so far have been very close to being within service limits.....honestly I could likely throw this thing back together as it is and it would provide years and years of reliable service, but given that it is getting put back together with the possibility of going in my own car some day in the future, I'll take the time, spend the money (probably a couple hundred bucks at most) and build a motor that I might actually be eager to put in the car!


Mon Dec 04, 2017 6:52 pm
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One more item crossed off my list of things to do.

Not sure if the Vortec truck pan will clear an F-body subframe or not, so I decided to refinish it regardless.

ImageB62B1565-49DC-42C5-A33D-FB0BF0AD2DB2 by Shane Hewitt, on Flickr

Looks much better!

Also spent some time running a tap through every thread on this block........that's more time consuming than you may think!!

After sitting down with my spreadsheet of measurements, it appears that standard replacement rings and bearings are going to bring all the tolerances back into as new condition, so no undersize/oversize anything required which I'm happy about.

Next task will be honing the cylinders.


Mon Dec 11, 2017 9:09 am
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Post Re: This Winters Project
Finally had a morning with a few hours free so it was time to deal with this.

While the original cross hatch marks could still be seen, the cylinders had a pretty good glaze on them. No point putting brand new moly rings on old glazed cylinders.

Image20171218_094522 by Shane Hewitt, on Flickr

This was the first time I've used one of these to hone cylinders, so I was eager to see how well (or poorly) it worked.

Image20171218_093147 by Shane Hewitt, on Flickr

Close up of what I was starting with.

Image20171218_092903 by Shane Hewitt, on Flickr

Close up of end result.

Image20171218_092942 by Shane Hewitt, on Flickr


I think this tool is a keeper!!! Pretty pleased with the results!

Image20171218_094452 by Shane Hewitt, on Flickr

Note.....the lighting makes the cross hatching in this last pic look much more severe than what it really is! Lol!

Now I get to spend this evening with the tedious task of cleaning the every square inch of this block again.....there is grit everywhere! Lol! At least this should be the final time. Hopefully order up some parts tonight & then...........more measuring........ :(


Mon Dec 18, 2017 11:53 am
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Not sure why the previous owner would have removed this, but happy I noticed it was missing before priming the oil system for the first time! Lol!

Image20171221_154814 by Shane Hewitt, on Flickr


Thu Dec 21, 2017 5:17 pm
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Parts arrived a few days ago & I finally had time & ambition at the same time today!

Popped the new main bearings into place & measured the oil clearance.....all of which fell right into place. :D

Image20171231_170621 by Shane Hewitt, on Flickr

So once I was satisfied with the new bearings, the crank has been put back in place for the final time.

Image20171231_173700 by Shane Hewitt, on Flickr

Crank end play fell right into spec as well.

Now that the crank is place for the final time, a new 1 piece rear main seal is now installed! Not interested in having ANYTHING leak once this engine finds its way into the car.

Image20171231_183827 by Shane Hewitt, on Flickr

For giggles I popped a couple of the new rings out of the box & measured the end gap to see if I was going to be in for hours of file fitting rings......it appears I may not! Super happy about that.....I hate fill fitting rings! That will be a task for another day though.


Sun Dec 31, 2017 9:42 pm
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After fitting the rings for cylinder #1 (only the oil control rings needed filing) and re-installing the piston back in the cylinder with the new rod bearings I decided for giggles to re-check how far down in the hole the piston is. Before teardown this measured .025".

ImageE9219171-910C-4C69-9456-1367F6ADD83B by Shane Hewitt, on Flickr

Surprisingly it now checks in at .022".

I have reason to believe this motor has been apart before.....now starting to wonder if it may have had the decks milled true at the time (which certainly isn't a bad thing!).


Sun Jan 14, 2018 9:51 am
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Wish I'd have noticed that the 880 block is already clearanced to accept a stroker crank BEFORE I ordered parts and started assembling! :lol:

Image20180130_200649 by Shane Hewitt, on Flickr

This would currently be a 377 under construction if I had!


Tue Jan 30, 2018 9:32 pm
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Post Re: This Winters Project
Spent some time yesterday finishing up the bottom end. Now that its all assembled and ready to go I was curious about the thin ring package this motor has and what sort of difference it really makes in terms of friction. To test it I put my torque wrench on the crank bolt to see how much torque it would take to turn the motor over. Much to my surprise it only took 14 ft/lbs!! While that didn't seem like much, I didn't know what a "conventional" small block Chevy would take.

Luckily a week ago I went shopping in a fellas garage & came out with a truck load full of '86 - '89 TPI stuff.

ImageA7604048-ABFE-4A39-82A0-1582412C2F6E by Shane Hewitt, on Flickr

Amongst the stuff I brought home was a 638 shortblock, so tonight I took my torque wrench out to see what a shortblock with a conventional ring pack would take to turn over. Much to my surprise again, this shortblock with conventional rings took 30 ft/lbs to turn over!

I really wasn't expecting that significant of a difference., but I'm happy that I'll be taking a mill with a conventional ring pack out & replacing it with a low friction, thin ring pack.......there has to be power to power to be had there!


On another note, quite a bit of the TPI stuff I brought home I don't anticipate having a need for, so some of it will likely be going up for sale shortly! PM me if you need anything!


Tue Feb 06, 2018 8:59 pm
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Post Re: This Winters Project
An interesting article regarding thin rings.

http://www.hotrod.com/articles/dyno-tes ... orsepower/

https://www.youtube.com/watch?v=-29IWc-zrv8

I was pleased to read that the torque measurements they recorded to turn over each set of pistons mirrored what I observed last week.

My motor won't be turning the rpm their test motor was, so I wouldn't anticipate the gains to be quite as high as theirs were, but I'm pleased to see that the thin rings should gain back a good percentage of the HP I'll be losing due to the drop in compression.


Mon Feb 19, 2018 8:41 am
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