Exhaust Manifold Leak!!

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mackei23b

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Building: MK Indy (ZX9R), Megablade, Caterham no3

posted on 19/4/15 at 09:49 AM

Exhaust Manifold Leak!!

Hi there

I just started the Duratec for the first time....however apart from running rich (I still need to sort out the fuelling) I have a leak between the manifold and the head.....

Here are a few pics of the progress....

Description

Description

What sealant should I use (I used the standard metal gasket, but I am not convinced that the manifold flanges are completely flat).....recommendations please?

Or is there a better gasket to use to accommodate some variation across the flange?

Thanks

Ian

[Edited on 19/4/15 by mackei23b]

[Edited on 19/4/15 by mackei23b]

40inches

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posted on 19/4/15 at 10:07 AM

Can you source a laminated gasket? These are around 2-3mm thick before being fitted.

big-vee-twin

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posted on 19/4/15 at 12:26 PM

The Duratec gasket is laminated and crushes when bolted up, I had similar issue and fitted new one which solved problem.

Duratec Engine is fitted, MS2 Extra V3 is assembled and tested, engine running, car now built. IVA passed 26/02/2016

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TrophyJem

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posted on 19/4/15 at 03:16 PM

I had the same problem and couldn't get any gasket to seal properly.
In the end I used Loctite 5920 copper silicon. It's been sealed for a year now.

davidimurray

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posted on 19/4/15 at 05:19 PM

Had my duratec out for the first drive yesterday

Apart from a carb problem at cruise all seemed good.

You could try one of these - http://danstengineering.co.uk/index.php?route=product/product&product_id=229&search=duratec

mark chandler

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posted on 19/4/15 at 06:10 PM

Manifold off, sheet of glass with some wet and dry on top and get rubbing.

With care you can get close with a 9" angle grinder with a new disc fitted holding it flat against the face of the disc, take care doing this !!! I clamped my manifold in a big vice, I would not recommend doing it the other way around.

[Edited on 19/4/15 by mark chandler]

mackei23b

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posted on 19/4/15 at 07:35 PM

Thanks for the replys....I should have mentioned that it is the exhaust manifold.

Cheers

Ian

Paul W

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posted on 19/4/15 at 07:42 PM

Hi I also used Loctite 5920 copper silicone & its sealed no probs.
Which altenater is that in your 1st pic ?

cheers Paul

mackei23b

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Building: MK Indy (ZX9R), Megablade, Caterham no3

posted on 20/4/15 at 08:35 PM

Hi Paul

The alternator is Denso.

Cheers

Ian

quote:
Originally posted by Paul W
Hi I also used Loctite 5920 copper silicone & its sealed no probs.
Which altenater is that in your 1st pic ?

cheers Paul

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