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Old 28-05-2010, 09:04 PM   #1
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exhaust manifold studs breaking on r33 gtst

I have heard so many stories about exhaust manifold studs breaking on the r33 gtst models dose this affect the whole range of r33gtst or did nissan become aware of the problem and upgrade the studs on later models mine is 1997 spec2 that seems ok but that thought is in the back of my mind may be this can happen at any time are there any specific symptons when the studs break any info will be great
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Old 28-05-2010, 09:27 PM   #2
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just listen and see if the manifold is blowing, i'm in the middle of doing mine now 3 of them had broken so i just got some uprated studs from conceptua and fitted them tonight then going to put the rest back togeather on sunday i hope
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Old 28-05-2010, 09:51 PM   #3
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As a rule it's only skylines with a bonnet at the front and an exhaust at the back that are prone to exhaust studs snapping. Could be worse tho,my manifold snapped clean in half. Best bet is uprated studs,stainless manifold(can be rewelded if it cracks) and elongate the stud holes to allow for expansion from heat etc
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Old 28-05-2010, 10:07 PM   #4
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Mine started going so speedr33per on here done mine 4 me. If u can, id get them sorted when u have chance. Uprated ones arnt very expensive and its a peace of mind thing.
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Old 28-05-2010, 10:09 PM   #5
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Its a personal preference but id not go for the manifold as standard ones are fine unless it warps due to snapped studs.
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Old 29-05-2010, 12:32 AM   #6
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Use uprated studs and elongate the holes on the manifold and it'll be fine, although I started cracking a manifold every 5-9 months so now run a stainless steel tubular one.
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I'd definitely chase response as opposed to out n out power - even a jump from 300-340bhp to 400bhp is a serious fright - going to 450-500 is mental ...unless your Bruce there... then power is like pringles... enough is never enough ;)
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Old 29-05-2010, 12:41 AM   #7
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Snapped manifold studs can happen on any car at any time tbh same as a head gasket many are getting on 15 years or more and have done well just like the coil packs and by all accounts cant be that bad really.

If i was to do it again i would not use up rated studs as it appears that the stud will not snap but instead crack the manifold witch is more expensive, Id take the studs over the manifold tbh although it can be a pig to do.

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The sound normally starts as a slight ticking noise that increases with revs but goes away as the car get warmer. This is due to expansion and the manifold trapping the gasket inside stopping it flapping about witch is the ticking noise you can hear.

Each time it will get louder and louder your lose some performance as boost pressure escapes and bow the manifold like a banana, also think there could be some valve damage if you leave it to long but others will confirm or deny that or any part of this tbh

As i always say im no mechanic i just have personal hands on experience of this.
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Old 29-05-2010, 10:58 AM   #8
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See I've had the manifold crack on std and uprated studs, and for me i'd rather be replacing the manifold at 25-40 a time rather than re-doing studs.
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Quote:
Originally Posted by anthonymcgrath View Post
I'd definitely chase response as opposed to out n out power - even a jump from 300-340bhp to 400bhp is a serious fright - going to 450-500 is mental ...unless your Bruce there... then power is like pringles... enough is never enough ;)
...mmmm... pringles....
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Old 29-05-2010, 11:01 PM   #9
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im with bruce on this one. cracked manifold 2-3 hours. snapped studs......ages and ages trying to drill the fookers out
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