BEGI drilled 10mm turbo stud holes too close together, what to do?
 

https://www.miataturbo.net/attachmen...ine=1339397256

Holes are too close together. Can I just bore them out a bit to the outside, or will that make my turbo prone to vibration?

I'm not going to talk to BEGI about this, I would rather not do business with them again (this and other things).

Can you tighten them in a pattern instead of cranking them down? Otherwise I dont think it'd be too much of a problem to bore it out, as long as youre careful and dont overdo it

I'm worried that if I try a pattern it'll beat the heck out of my (inconel $$$$) studs.

Or that if I bore it out it'll be uneven matching of the ports... or that it could be right now. Ugh. BEGI.

How much are we talking? I'd bore the turbo flange. You want the turbo to slide over de studs loosely not tight. The nuts are for tightening.

Bored it out a little. Fits tightly, but I don't want to take it down more than I need to.

https://www.miataturbo.net/attachmen...ine=1339408136

Open the holes in the turbo, its not that hard. If its still too tight, go bigger..

I feel for you on this. I've had my own set of issues with BEGi, will not be working with them again.

retarded as hell. sorry.

Simply drill out the holes on the turbo flange. Most new turbos I have seen have been drilled for M8 studs and the turbo flange has to be drilled out for the M10 hardware.

LUL another bash begi thread.

not to turn this into a hate thread but i had the same issue. I just bored mine out a little too and haven't had any issues with it put about 50k on it. I also had problems with my downpipe mating correctly in it's 2 piece design (exhaust leak). The o2 bung was also on crooked so I had to plug it and weld another on. I'm sure they would have fixed it after i spent another $60 in shipping which they wouldn't cover. make me pay for your mistakes. thanks. never again.

Yeah. I paid BEGI to drill out to M10.

I should have specified in my order to 'drill in the correct spots.' :P

:P How do you know its not Garretts holes that are off?

I wouldn't know, considering I'd never seen this brand new turbo before I got it drilled out.

But if Garrett couldn't get the tolerance on stud holes that fit loosely, their CHRAs would have above a 100% failure rate. :P

Different parts have different tolerances. Drills do walk. You should have measured both parts, distance between the holes on the turbo (all 4) and then distance between the studs. With a caliper.

Obviously they have different tolerences. Otherwise my point would have been nonsensical.

Advice unimportant, it's on my car now. Maybe the next person can use a caliper.

Its ok the garrett turbo will fail soon enough. :D

It just needs to last long enough to get a built engine!

Then it's EFR timez. :)

Wtf, double post?