Advice Please - Busted Exhaust Manifold Stud

[gsxr33]

Hi all,

Can anyone confirm if a broken exhaust manifold stud would result in a drop in boost pressure and/or performance (RB25DET)?

Also, how much of a pain is it to replace them?

Thanks in advance.

Terry.

[FORZA-MOTORSPORT]

Hi terry call captain thread on 0407077414 he will remove it for you. Tell him FOOLBOOST says hi

[gsxr33]

Hi terry call captain thread on 0407077414 he will remove it for you. Tell him FOOLBOOST says hi

Excellent, thanks mate. Do you know how much $$$ roughly?

Do you know if this causes any boost issues?

[Kinks]

if you're lucky, that exhaust port will still seal and there will be no change.

otherwise yes, of course.. you will get an exhaust leak which means there is less gas available to drive the turbo and your car won't boost as quickly.

[The Dan]

The stud breaks because the leak was already there or because of an oil leak over the stud in question. So to answer your question - yes it will cause boost issues.....it will also effect air/fuel ratio readings. If one stud is broken you will be looking at around 4 -5 hours but the thread guy will not remove the turbo and manifold for you...you'll have to do it yourself or get someone else to do it.

[r_speedfreak_r]

i've heard of exhuast studs breaking on many skylines. it was probably a techline in japan

[gsxr33]

Thanks for your help everyone!

[bbe]

just done mine lol worksshops charge 50 or more per stud to fix plus gaskets lol and so on..

i done myself they suck,,need small air drill if have some snapped of...

replace all of them if doing not worth doin 1 or 2

goodluck

[HRthirtyone]

captain thread is the MAN!!! he has gotten mine out twice, when i broke an easy out stud extractor off in the broken stud aswell...

cost a bit over a hundred $$ EACH. but i was so frustrated i had no other avenue. He has a mobile service which is very handy

VOTE 1 CAPTAIN THREAD

[silver gts-t]

wtf??

4-5 hours?? over $100 each???

i had 3 broken studs.. guy took 1hour to remove and replace them all and it cost about $120

unfortunately for you im in sydney

[HRthirtyone]

i got all new studs installed with that price aswell. But i guess he has no competition in Adelaide!

[MKDR33]

ive had this same problem, and now i got an oil leak from the head behind the stud.. i called a thread proffesional to fix it, and its still leaking, is there anything i can use to seal this leak properly? rather then replacing the whole head?

[Kinks]

i've heard of exhuast studs breaking on many skylines. it was probably a techline in japan

they break because the inline-6 manifold is long, and has a turbo hanging off it. the weight and flexing from repeated heat cycling gradually fatigues the studs.

I had at least 3 snapped studs when I pulled the manifold off my R31 (was upgrading the turbo and figured I should do the studs while it was apart). I didn't suffer from any exhaust leaks either.