1G Surface rust on cylinder walls :(

AlmightySo · Jun 28, 2017

Just got my block back from the machine shop, ive got surface rust on all cylinders and the deck of the block.. figured if you would be paying 1500 for machine work it would come back looking like gold but.. first block ive sent to a machine shop, & 1st build. Hope this doesnt slow me down..
4g63 Cylinder walls
Pics: https://imgur.com/gallery/YKmjV

SasaniFab · Jun 28, 2017

AlmightySo said:
Just got my block back from the machine shop, ive got surface rust on all cylinders and the deck of the block.. figured if you would be paying 1500 for machine work it would come back looking like gold but.. first block ive sent to a machine shop, & 1st build. Hope this doesnt slow me down..
4g63 Cylinder walls
Pics: https://imgur.com/gallery/YKmjV

Don't worry about that, take a rag soaked in oil and clean the walls off, scrub them. The deck you can gently scrub the deck with some mineral spirits of oil, I used an abrasive pad.... LIGHTLY, to remove any surface contamination..... any surface rust can be removed easily. I wouldn't worry about it

jakk220 · Jun 28, 2017

WD40 works good too

AlmightySo · Jun 28, 2017

I rotated the crank and now I have a big line going down the cylinder wall.. I can barely feel it with the nail test, coworker of mine said the same thing.. im extremely dissapointed.. I soaked them in pb blaster and wiped with micro fibre rag before this happened but I guess the rings caught some rust..

miliman13 · Jun 28, 2017

That will happen. its raw bare metal
But it will clean up well, oil and a green pad will knock it.

Did you or some on else assemble, because the ring ends are to supposed to be lightly sanded smooth, after cutting them to the desired gap.

jakk220 · Jun 28, 2017

Can you post a picture?

miliman13 · Jun 28, 2017

jakk220 said:
Can you post a picture?

click the link bro.

EDIT. i think you mean the bore lines..... if so my apologies.

jakk220 · Jun 28, 2017

miliman13 said:
click the link bro.

.....of the scratch

AlmightySo · Jun 28, 2017

jakk220 said:
Can you post a picture?

https://imgur.com/gallery/6poVP

jakk220 · Jun 28, 2017

AlmightySo said:
https://imgur.com/gallery/6poVP

I have a mark like that in one of my cylinders from where some gasket remover ran down in the cylinder. Mine is just a stain and looks just like that. Are you positive that it catches a nail? It could just be a mark and not a scratch.

Either way you still have the crosshatch in there so with how light that looks it will more than likely go away when the rings seat in

94awdcoupe · Jun 28, 2017

AlmightySo said:
I rotated the crank and now I have a big line going down the cylinder wall.. I can barely feel it with the nail test, coworker of mine said the same thing.. im extremely dissapointed.. I soaked them in pb blaster and wiped with micro fibre rag before this happened but I guess the rings caught some rust..

crappy machine work not smoothing end of ring after gapping, the rust is a non issue

SasaniFab · Jun 28, 2017

Its fun isn't it! You learn quick to stop depending on others to waste your hard earned money....I always make sure I knock off all the burrs after filing my rings. I read an artical regarding the effects of deburing rings to much and causing compression losses....if you remove to much material on the back sides of the rings you create a channel multiplied by 8 and you can see how much of an effect it can have. This artical was v8 specific but I can see how you can create a problem for yourself. I lightly debur the end of the ring I filed with a honing stone I got from harbor freight. Haven't had a problem yet?

AlmightySo · Jun 29, 2017

jakk220 said:
I have a mark like that in one of my cylinders from where some gasket remover ran down in the cylinder. Mine is just a stain and looks just like that. Are you positive that it catches a nail? It could just be a mark and not a scratch.

Either way you still have the crosshatch in there so with how light that looks it will more than likely go away when the rings seat in

Yes im sure I feel it with my nail, my coworker pointed it out to me first and hes built engines in the past

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1G Surface rust on cylinder walls :(

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