Screaming On Boost!!

[adam 32]

the gasket itself costs ~$100 from nissan

theres probably about 2-3hrs labour involved in the change

[46n2]

I had a thread repairer come out and "easy-out" the 3 snapped studs. Cost about $80. They drilled down & thru the middle of each snapped stud, and tapped like a little hex key in the hole, and just unscrewed them. It helped that I had the head off, but if you had the exh. manifold off and pulled the turbo out, there should (in theory) be heaps of room for them to work - in an RB20 at least.

46n2

[adam 32]

drifto; did you ever find out what the problem was?

[MotoX]

mine screemed at 4-7k and it was my manifold to exhaust turbo wheel gasket. $37 i got a new one, sounds nice now.

[adam 32]

manifold to exhaust turbo wheel gasket??

u mean manifold to turbo?

[drifto]

I will have that looked at cheers,

As i said to Adam in a PM, I had a renonwed workshop go for a test run and they were clueless!

They did show me what happens when shaft bearings do go loose and the wheel touches the housing. A pair of very second hand GTR turbos sat on the bench in the workshop. It confirms that when this happens they don't last long so I am sure this is not my problem.

Thanks again to every one for their input.

[adam 32]

drifto

keep us informed on your progress because i have this problem again, and the turbo guy know swears its not balancing. my noise goes away slightly when it gets hot so im thinking possibly a gasket. will do a re-tighten of all the exhaust bolts on the weekend and see if that helps, its a strange noise eh!

[MYGTST]

i hade this problem a while back

it was the head to exhaust manifold gasket

it was leaking because the last 3 bolts were cracked

took me about 4 hours to repair

not much room to remove the last 2 bolts

had to get a right angle drill to drill out the studs

gasket $100 labour 4 hours

i took the opportunity to replace the turbo to a larger unit at the same time

dont stress this screaming wont break your car its just annoying

eventualy the gasket will burn away and you wil beggin to lose power up top

if your planing to upgrade turbo take the opportunity now

as ita has to come off anyway

[adam 32]

it only takes about 1hr to get the turbo off, it aint that big-a job

ive replaced all my exhaust gaskets within the last month, i think its a matter of going through and tightening all the bolts...

yeh it sure is annoying!