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stripped/cross threaded intercooler bov bolts... ideas?

Old 28 February 2012, 06:32 PM
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fiveskin
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Default stripped/cross threaded intercooler bov bolts... ideas?

Hello all.

So I took off my bov today to realise one bolt was endlessly turning. No idea who would've last took it off but I know I never stripped it.. I've become a tightening pansy since my ally wheel nut snapped..

Anyway, I managed, through a lot of swearing, to get the bolt back in and tightened up again. It's chewed itself a new thread so I know that when I take it out, its knackered.

Just wondering if anyone on here has had this and what they did to resolve it?
I wondered are the holes inserts into the intercooler or part of the intercooler cast?

I was going to maybe do a helicoil on it but I'm not sure how reusable they are.

Or I was just going to rethread a bigger hole and put a bigger bolt in..making the hole larger on the bov itself could be a problem though if I go back to standard...

Read on a yank forum that the holes are deeper than the screw by quite a bit, so put in a longer bolt..

Anyone else done this or had the same?

Thanks all.
Old 28 February 2012, 06:44 PM
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M4RKG
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Rethreading is pretty much your only option on this one, other than changing the top mount... or could just go for a front mount

With regard to going back standard though, BOV's are pretty much common place on Impreza's now though, so wouldnt worry about changing it back if you were ever selling
Old 28 February 2012, 06:53 PM
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re tap the holes a size larger as i have done. going back to standard isnt a problem either as the o/e valve can be drilled to your new bolt size
Old 28 February 2012, 06:55 PM
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Can vouch for how well hellicoils work, they will do the job no worries at all
Old 28 February 2012, 06:58 PM
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helicoil it
Old 01 March 2012, 12:45 AM
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Cheers for the replies all.
I see the heli coils but have only ever used similar for something that was in wood.

How well do they hold up being undone and done back up again?
Old 01 March 2012, 06:44 AM
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Originally Posted by fiveskin
Cheers for the replies all.
I see the heli coils but have only ever used similar for something that was in wood.

How well do they hold up being undone and done back up again?
Yes, they're fine. As long as you're not at it every 5 minutes lol.
Old 01 March 2012, 08:31 AM
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A helicoiled thread in aluminium will be stronger than a thread cut into aluminium , as long as you don't overtighten them or put a damaged bolt in , they should last forever.

If your stuck I can do it for you , I charge £30 per thread

Cheers Ian
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