sealing my powerspeed exhaust....

[David M]

Hi,

 

Had my powerspeed exhaust for about a year and exhaust is coming out of where the 4 primary's join the external section (quite common so its said..) any thoughts what the best way of sealing it.... re-attach, use some sealant.......

 

I should just add I am exceptionally happy with my powerspeed even if it is leaking a little....

 

Cheers

 

David

 

GF04RCE.... every day is a Caterham day!!!! He heee!!... pictures here. Problem is every day seems to be a GT4 day too...!!!

[The Polisher]

 

I made a tapered drift and used it to flare the end of each primary untill it was a snug fit in the collector.

Result......no leaks and no rattles.

 

Dave H.

Mad about S77ENS

[Graham King]

Hi, just got back from Powerspeed today having had mine fitted, Dave told me to use ordinary silicone sealant if it started leaking.

 

Graham

 

R7 GPK

Superlight #85

[allen]

Best to use flue sealer, from any plumbers merchants, it's red and lasts quite well.

 

allen

[Myles]

Beer-cans and high-temp silicone...

 

One of my primaries is loose enough to rattle slightly - needs more than just silicone to keep it sealed.

 

Don't use Fire Gum for gawds sake though...

 

Project Scope-Creep is live...

 

Alcester Racing 7's Equipe - 🙆🏻™

 

Alcester-Racing-Sevens.com

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[davef]

Best to use flue sealer, from any plumbers merchants, it's red and lasts quite well.

 

But unelss you're careful it looks a mess (been there, etc). Use normal clear silicone sealant from any of the DIY sheds.

 

Dave

[jano]

>Use normal clear silicone sealant from any of the DIY sheds.

 

Excuse me for beeing slow, I just want to besure I understand this correctly.

 

But you mean the normal stuff you use in your bathroom to seal up stuff like the edges off the bath tub? Won't catch fire if used on my red hot 4to1?

 

/jano

[Kevsta]

You read correctly! Try setting fire to it.

 

 

[davef]

Correct - the normal stuff you might use in you bathroom, kitchen etc. It doesn't burn. I also used it on the exhaust manifold gasket (as did Dave @ Powerspeed when he fitted mine) - works a treat.

 

Dave

[SLR No.77]

A question to those who use silicon sealant to seal the manifold/collector pipes - how long do you leave it to set before running the engine?

 

Stu.

 

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Joint Area Representative MAD Sevens (Merseyside And District)

www.superse7ens.co.uk..........the rebuild 😬

 

 

[Beelzebub]

If there's a lambda probe in your pipe 😳 silicon sealer if used upstream can cause premature failure.

 

D.

[Graham King]

Stu, I just smear a thin layer of silicone around the inside of the collector and the outside of the primaries, push together, leave for about 15 mins and then start the engine. It smokes a little to start with but never had a problem. My lambda sensor is in primary 4 inside engine bay so no problem with that.

 

Graham.

 

R7 GPK

Superlight #85

[I.Mupferit]

It can also kill the catalytic converter.

 

Was going to say 'can also kill the cat' but in deference to OBNS's sensibilities, thought I should rewrite that.

 

Brent

(aka Arfur Nayo)

 

2.3 DURATEC SV You know when you've been AMMO'd 😬

R470.69 😬

[prs]

RTV high temp, i've used it on my powerspeed for 5yrs and never had a problem

[SLR No.77]

Planning to use the cat so is RTV safe or what else may be ok? Lambda sensor is also in no.4 primary so upstream, but cat is obviously downstream.

 

Stu.

 

---

Joint Area Representative MAD Sevens (Merseyside And District)

www.superse7ens.co.uk..........the rebuild 😬

 

 

[prs]

Stu, your Lamda sensor is in the same position but I haven't got a cat on mine. However your joint is after the cat so see no reason why it wouldn't be ok.

Phil

[ChrisHawkins]

I used Loctite 5920 high temp RTV, its been fine.

 

K93 AMJ