Resurface turbo flange at "home", I did good?
After several issues with turbo studs gasket failures etc I tried to belt sand my flange, totally fu*ked it up, needed a flat surface, searched the net.
Here in Sweden we got (what feels like) a handful of people/companies that do this daily so I'd figure I try something myself. Teenage days lapping CPUs with sandpaper thought me something, why not do the same with a flange? Bought 3 packs with self adhesive paper 80/120/320grit and used our flat bench we use for setting cylindrical cutting units (I work on a golf course) and off we go. Before anything, Tried to clamp it down onto turbo and I could easily fit a 0,05mm (dunno derp units) feeler gauge thru the wide side in-between flanges. 0,1mm would also fit at some places. https://cimg9.ibsrv.net/gimg/www.mia...8cb2bba67e.jpg Used some welding clamps to get even weight on the flange. https://cimg3.ibsrv.net/gimg/www.mia...ff682752ea.jpg Too bad no picture from start but this were about 20min later. https://cimg4.ibsrv.net/gimg/www.mia...f26d64fbd3.jpg Some deep pits that took forever https://cimg7.ibsrv.net/gimg/www.mia...85c48d5287.jpg Should I be happy or what? Total cost, my time and about $15 with plenty of sandpaper left. Yes, I have tried it with studs on turbo and it's more than perfect. Just wanted to share this. /Thomas |
Should be good to go. I do it this way with optical parts at work using diamond sand paper/polishing film and a glass plate.
If it measures flat, it's flat. |
I did something similar when I was on a shoestring budget K24 build a decade back. Measured flat and the gasket worked to offset any slight imperfections i could't pick up when measuring if it was flat. Ran it that way for 20k miles and no leaks/issues. YMMW.
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I have done similar to re surface a motorcycle head. I use a leftover chunk of granite from when i remodeled my kitchen. Its flat and hard works well.
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Looks good. If you want it to stay that way, stop using a gasket there
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^This.
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Originally Posted by Savington
(Post 1522707)
Looks good. If you want it to stay that way, stop using a gasket there
Ran the car without turbo for 4 months during the last summer but now I've decided I'm done with the headache, now using inconel/stage 8 locks and resbond. Like always, got a problem? Throw money at it. |
TIL that no gaskets is the way to go in the Miata world. I ran a gasket between the turbo/mani and the DP/turbo on my k20/k24 hybrid Accord years back since that was the preferred option (and i was an idiot in my early 20's), but it never made sense assuming the mating surfaces were flat and was introducing a weak point for no reason. Either way, it worked fine in that application for 20k miles.
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