My stomski tools came in the mail so I pulled the heads and got it to a short block this evening after work.

I had two broken headstuds on one cylinder and the head might need to be replaced so possibly looking for a core right now if anyone has one. The head gasket was also in two pieces.

I'm swinging be Engine Machine Services in Inglewood tomorrow to get a full quote on machine work from them for a valve job, twin plug machining, crank cross drilling, micro polish, magnaflux, and to clean a ton of stuff.

Images of the carnage below.

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Good to know. A build thread on here thats spot on with mine made 300 at the crank. Hoping I end up near that.

I see more gritty gloves in the bin than parts, haha.

broken piston ring? well, it's gonna be all good. hope the cylinder wall didnt get scars

It’s the head gasket. Not really worried about the cylinder wall but they honestly all look great.

Already have these waiting for the rebuild :D 98mm 10.5:1. Ordered from Jon at EBS.

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Engine Machine Services polished, mic'd, and maganfluxed my crank a few months ago for $175. Just giving you a ball park on the cost.

based on my experience with a similar set from the same person at EBS I strongly recommend you to have the Ra measured on the new cylinders before you assemble. Mine had too coarse finish and never stopped burning oil. Others had similar experience. Just have them checked and hopefully they changed their specification ? I had a 3.2SS for about two years and now back with original cylinders

They are drilling the heads for twin plug, porting, valve job, new exhaust studs, and cleaned.

Case gets cleaned and oil galleys gone through and new piston squirters

Crank gets cross drilled and grooves in the center. Magnafluxed then heat treated.

Entire rotating assembly balanced

Connected rods and rocker arms rebushed and refurbed

A couple other things also. Will be north of $4,000 and 2+ month wait. Dropped in there this morning and loved seeing everything and talking to them in person.

This is really good to know. Thank you!

Surprisingly easier to get the case halves apart than I thought it would be. So far the mains look great. Cleaning the garage and prepping everything to go to Engine Machine Services in the morning.


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Keep us posted on this issue with this 3.2SS build. I just built a motor with 3.2 cylinders taken out to 100mm and purchased new pistons from EBS. Now I'm worried.

How long ago did they have this issue, and what is Ra?

Bill

Ra is roughness average, surface finish measurement.

How is it measured? Does one send it out somewhere?

Bill

Stripped everything last night. A little score on rod #3 but everything looked clean. Off to EMS for 2-4 months..

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I ask the materials engineer downstairs to measure it :)

You may have to call around to some machine shops to find one with a profilometer that is capable and confident. It seems like a straight forward thing to measure but I've seen a lot of inconsistency between suppliers, equipment, and inspectors (direction and length of measurement, Ra vs RMS, etc). I suppose having a measurement only helps if you have a criteria of acceptability though. What is the minimum acceptable surface finish to ensure good sealing? What are the requirements in a new set of cylinders? This could be a good topic for the engine build section of this forum. I've heard of inconsistent diameters on rebored and plated cylinders (cone shaped instead of cylindrical) being an issue as well.

I had a set cylinders opened up to 98mm by Millennium Plating. Based on what I read, I inspected them and found them to be 15-17 Ra (I have access to an aerospace QC lab). I called around and EBS and Millenium said "no problem" "that is normal". Fast forward three months and my motor is eating a quart every 600 miles and all the plugs are oil soaked... 15-17 Ra is too abrasive and ruined the finish on the rings, allowing oil to pass by. IIRC, Henry at Supertec later told me it should be much smoother; closer to a 5 finish.

This piqued my interest a bit as I'm working on some components where surface finish is critical. Not IC engine but it's always interesting to see what others are doing. I've also been accumulating parts for an engine build and I have a bunch of used cylinders. This article does a decent job of discussing cylinder surface finish:

https://www.enginebuildermag.com/2000/09/cylinder-bore-surface-finishes/

This is really good to know.. I just dropped everything off at EMS and gave Bill my new pistons and cylinders also. He said he's going to check out the cylinders and let me know what he thinks. May have them redone if he thinks its worth it as I really don't want to be eating that much oil.

Dropped everything off at EMS this morning. 3-4 month turn around time so it might be crickets here for a minute.. Took a look around back and was thoroughly impressed with what engines he had back there.

For the case they are cleaning it, checking the line bore, and removing the head studs.

For the rotating assembly they are cross drilling and grooving the crank, micro polish, and magnaflux. The rods are getting rebushed and magnafluxed. The entire rotating assembly is getting balanced with my RSR flywheel and Sachs pressure plate. I have a 15# Sachs pressure plate right now and considering buying a lighter one for this build. PM sells a 7# aluminum one.

The heads are getting surfaced and ported to 40I/38E to match Carrera head specs and twin plugged. Full valve job and new exhaust studs. Rocker arms are getting refurbed. The cam housings and boxes are getting blasted and all cleaned up also.

RIP my wallet but I really wanted this to be a "one and done" rebuild and tick every "while I'm in there box".

I too found my EBS supplied cylinders to be Ra 16+ and it ruined my 3.2SS setup. I now have engine out and going back to 3.0. The 98 mm cylinders are junk after 2 years, as are the CP pistons and rings.

I so want to see how this turns out... I was really wanting a 3.2ss but the $$$ to HP ratio was kinda crazy... so now I have a set of Rarelyl8 turbo headers in the garage... :)

Geronimo are you going to sell headers?