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Post by scottydugg on Apr 27, 2022 11:05:58 GMT
Got some flange faces on my down pipe that have some heavy pitting in them, what's the best way to resurface them, get them a little flatter? It's an odd shape, so I'm not even sure I can get an exhaust flange for it, but FM say no need to run one there. This is what they look like:  Turbo Flanges by Scott Reid, on Flickr I was thinking some fine wet/dry on a sanding block or a sharpening stone of some sort? Worst case it'll be another trip to the machine shop! |
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Post by atlex on Apr 27, 2022 13:18:19 GMT
some kind of 'flat stones' sanding would be best, in situ..
ultimate would be to take it off and put it up against a mill of some mind lol.
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Post by scottydugg on Apr 27, 2022 13:34:54 GMT
some kind of 'flat stones' sanding would be best, in situ.. ultimate would be to take it off and put it up against a mill of some mind lol. Thanks atlex, I think I could source a gasket but more reading leads me to believe it's meant to run without one I think I'll try flat stone first, then mill second if that proves not up to the task, the pitting isn't too bad but would have an effect on sealing. Just wanted to make sure I was going down the correct route. |
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Post by warpspeed on May 3, 2022 0:43:25 GMT
A suitably sized angle grinder fitted with a brand new wheel works well.
Run the hub of the grinder into the hole, so the flat face of the grinding wheel works over the whole flat flange surface.
You will quickly find any high spots, and its about a thousand times faster than rubbing on a stone.
Once both faces are dead flat, it will work fine without any gasket.
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Post by scottydugg on May 3, 2022 8:00:23 GMT
Thanks warpspeed, literally just dropped both off to the machine shop and collecting tomorrow. Didn't want to start messing about with them too much, for piece of mind thought best way to go, going to use some copper gasket as well for good measure, but not intending using any of the metal gaskets anywhere near the turbo. |
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Post by atlex on May 3, 2022 8:52:33 GMT
going to use some copper gasket as well for good measure, but not intending using any of the metal gaskets anywhere near the turbo. I was gonna suggest that. If you have access to a CNC or waterjet you could just give them the template to cut. it's a simple shape. I run no gaskets near my turbo either, no problems. |
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Post by scottydugg on May 3, 2022 9:21:45 GMT
going to use some copper gasket as well for good measure, but not intending using any of the metal gaskets anywhere near the turbo. I was gonna suggest that. If you have access to a CNC or waterjet you could just give them the template to cut. it's a simple shape. I run no gaskets near my turbo either, no problems. Yeah from everything I read they're a failure point in waiting, have you got any special locking hardware on any of the turbo connections? I've gone Inconel on the mani/turbo flange only, copper locking nuts and NordLock washers, I'm hoping that'll be good enough, the US guys all seem to insist on Resbond and stage 8 locking hardware, but the postage is more than the parts themselves! |
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Post by atlex on May 3, 2022 14:01:37 GMT
Same as you, nordlocks and inconel. I doubt what you mentioned from the US will be better than that combo anyhow, since Nordlocks really are that good.
Did you try breaking them free ? it's a lot of torque to do that.
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Post by scottydugg on May 3, 2022 14:37:44 GMT
Same as you, nordlocks and inconel. I doubt what you mentioned from the US will be better than that combo anyhow, since Nordlocks really are that good. Did you try breaking them free ? it's a lot of torque to do that. Inconcel on the exhaust/down pipe side as well? Not tried them yet, but have bought M10/M8 to use on everywhere the turbo fits up to. |
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le sigh