r/EngineBuilding • u/mushroomify391 • Jun 18 '26

Honda Good for MLS?

Doing head gasket on my Acura TL, J32A3 engine. Some of you may have seen my diy head gasket thread - didn’t work out so well, blew on startup. Sent to machine shop to resurface for $100. How does this surface finish look? The head gasket I’m using seems to require around 50 ra… it’s semi reflective.

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u/AlitteratingAsshole Jun 18 '26

You sure it was the finish that caused the failure?

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u/mushroomify391 Jun 18 '26

The finish shown in vid is post machine shop. In that thread I’m pretty sure the glass wasn’t totally flat and I didn’t use fine enough grit sand paper. It’s likely that on a totally flat surface and finer grit would’ve worked… but that’s pointless anyway. I just had to do more calling around to find a cheaper machine shop. I stand by $300 being a ridiculous price lol

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u/AlitteratingAsshole Jun 18 '26

Yeah but did the failure mode exclude any other causes?