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leaking extractors
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Author:  miniVan [ Sat Oct 16, 2004 8:59 pm ]
Post subject:  leaking extractors

ok guys.. need some help

my extractors are leaking like a seive (theyre almost new)

i refuse to go back to the mini guy that fitted them and i figure i can do a better job.. cant be any worse.. (my engine bay is full of smoke)

i pulled the bugger down today and they are really loose in the joints.. i have some dynagrip exhaust sealant and was wondering if that is what your supposed to use (all exhausts ive played with are braised or clamped)

the other thing i need to know.. is there something else i can use for a manifold gasket without using a manifold gasket (i cant wait till monday i need my car tommorrow arvo) how hot does a exhaust manifold joint get (i have some copper gasket maker thats good for 316 degrees celcius)

these things werent braised or glued or clamped... just shoved on.. in the pic you can also see where they are fouling on the uni joint (stuffing my new ones up too) so i smacked them in (less performance huh? haha

Image
Image

Author:  drmini in aust [ Sat Oct 16, 2004 9:06 pm ]
Post subject: 

I used to have those type- yes they leak when old & thin, but if they do it when new, I'd take them back and bitch about it.
They should be a tight, slide on fit.
Nickel anti-seize is the best stuff to assemble them with, it helps stop them rusting together. Better for high temps than copper grease.

Last time, I bought a Maniflow- they join underneath instead, and have proper clamps.. :wink:

Author:  min13k [ Sat Oct 16, 2004 9:07 pm ]
Post subject: 

they should be slit and clamped
makka

Author:  miniVan [ Sat Oct 16, 2004 9:08 pm ]
Post subject: 

what about the manifold gasket (read above)

Author:  miniVan [ Sat Oct 16, 2004 9:08 pm ]
Post subject: 

i cant get to them to clamp them.. maybe i'll give that a go tommorrow morn anyway

Author:  drmini in aust [ Sat Oct 16, 2004 9:11 pm ]
Post subject: 

min13k wrote:
they should be slit and clamped
makka


No room for clamps on this sort. Ozzy specials.... :cry:

Forget the gasket maker- temp inside the ports is prolly 2000C... :shock:

Industrial hi-temp gasket material (what used to contain the dreaded asbestos) is the go. Can't you find a gasket seller on a Sunday- AutoPro? SuperCrap?? etc..??

Author:  miniVan [ Sat Oct 16, 2004 9:18 pm ]
Post subject: 

i'll try alright to find it.. let you know how it goes.. people here are crap for parts unless its one of the two mini places

if i cant get clamps will exhaust sealant work?

Author:  min13k [ Sat Oct 16, 2004 9:22 pm ]
Post subject: 

if you do use sealant let the motor warn at idle do not rev the motor for at least 10 to 15 minuets let the sealant got hard
makka

Author:  drmini in aust [ Sat Oct 16, 2004 9:26 pm ]
Post subject: 

You could also try good old RTV silicone sealant, the original clear stuff. Good for around 400C, I think. Rheem (where I worked) used it to seal around gas pool heater flues that got bloody hot.

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