Dump Pipe Nuts - Keep Falling Off

[Hawker180]

Ive had all sorts of trouble with keeping the dump pipe nuts on, they always seem to come loose.

Recently i noticed an exhaust leak with my car, (turbo, manifold and dump pipe were all leaking), so i blamed it on the previous owner and went ahead and with installing new nissan gaskets and new dump pipe studs and these wurth exhaust nuts.

These are the Wurth nuts i have tried (top left):

does anyone have any other suggestions, these wurth nuts have a top bit that is forced to hold the thread on tight but even they come loose

should i try a second nut on the studs? or some different types of studs?

[djr81]

Loctite.

[Hawker180]

hot exhaust + Loctite =

Edited March 12, 2008 by Hawker180

[GeeTR]

Lock tabs, like OEM

[R338OY]

If you tension the bolts correctly, and use a star-pattern for anything more than 2 bolts, it should be fine.

Use a torque wrench if you can get one. Might help.

[TiTAN]

http://www.skylinesaustralia.com/forums/Tu...se-t207922.html

Another person was having similar issues earlier.

[BHDave]

well shit. I just used a heap of these this time round.....manifold to head and turbo to dump. We shall see.

[Duncan]

wierd. we have never had loosing problems with properly torqued nuts.

what boost, turbos and dumps (or even better what temps do they get to). are the studs new (ie definately not stretched?) what gaskets

[Duncan]

oh and standard dumps dont have locking nuts, only manifold to tubro does

[R338OY]

I hope you get your nuts back on dude.

[SevenAngryPenguins]

yeah you dont want ya nuts to fall off

[BHDave]

yeah you dont want ya nuts to fall off

lol,

yeah, leprosy's a bitch!

[boosted_32]

mate if thoes copper lock nuts dont do the job then your in trouble! there the best nut for the job! used them on all my turbo and manifold upgrades and have never had a problem

[Hawker180]

I hope you get your nuts back on dude.

yeah you dont want ya nuts to fall off

^^^what is this www.nissansilvia.com??? I tried SAU for a non 3 year old childs comment

Edited March 13, 2008 by Hawker180

[Hawker180]

wierd. we have never had loosing problems with properly torqued nuts.

what boost, turbos and dumps (or even better what temps do they get to). are the studs new (ie definately not stretched?) what gaskets

Its a SR20DET, HKS GT-SS turbo, stock manifold, aftermarket dump, Genuine Nissan gaskets

Back in December i put in new Dump pipe studs and Nuts (all Wurth products from my local exhaust shop)

He said he hasnt had any issues with those nuts before and he said to try double nuts on them!

[Duncan]

if double nuts (locked on to each other) don't do it nothing would. but it doesn't make sense - we run ours damn hot at times and we have never had trouble with them coming loose.

are both surfaces flat?

[GeeTR]

^^^what is this www.nissansilvia.com???

You watch your f'n mouth

[SevenAngryPenguins]

^^^what is this www.nissansilvia.com??? I tried SAU for a non 3 year old childs comment

I feel sorry for you, you obviuosly have no sense of humour what so ever.

[Cubes]

I checked mine and 5,000km's of daily driving later I have had 2 turbo -> manifold nuts come loose and have just lost 1 dump pipe bolt.

Its a biatch.. All torqued up correctly also.

Off to get some oem locking tabs and to sort out something for the dump pipe.

[Jmaac]

Bolt them up, and weld the nuts to the flange - no more lost nut issues ever

Go any high tensile bolt with some copperslip (8.8 on the head)

Edited March 14, 2008 by Jmaac