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Inguz

Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

Leaking EGR blank

Hi all, I've blanked my egr a couple months back and it's been leaking since day 1. I've used hi temp sealer a couple of times with no success.

The sealer is only rated to 350c. I want to try a higher temp sealer and see will that work.

What I would like to know though is it ok to use a cement, as everything I can find rated to a higher temp is cement and not silicone.

26th Dec 2023 9:24am

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2051

Permatex 27038 Optimum Red RTV Silicone Will go to 399°C.

I would not use exhaust cement as that breaks up and turns to fine dust and you don’t want that getting in the engine.

Worth checking out products for stove / log burner sealing in addition to automotive sector sealants but I think the high temp 1000/1300 °C ones are cement based as well.

Last edited by Ianh on 27th Dec 2023 2:29pm. Edited 2 times in total

27th Dec 2023 2:07pm

Inguz

Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

I think the temp may get higher than that and it will keep blowing out.

I was worried about the cement just crumbling. It doesn't seem like there is anything on the market that will work.

I used the kit from paddocks that doesn't have the gasket for the exhaust manifold. I may try another kit that has the gasket.

27th Dec 2023 2:20pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2051

A gasket will be better in this use case. I’ve used the permatex on exhaust slip couplings but they were further downstream of the engine exhaust manifold and therefore the temps were lower.

27th Dec 2023 2:22pm

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2187

You need exhuast putty/sealant. That manifold can hit 500c+ Instagram @defender_ventures
Empire Tuning - Agent

27th Dec 2023 5:42pm

Inguz

Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

I see permatex and muffler tailpipe putty is rated up to 1000c. Would this work? I’m mostly worried about it breaking down and ending up in the turbo

27th Dec 2023 7:38pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1630

What engine is this on? If it’s td5 there is a gasket available.

27th Dec 2023 9:15pm

Inguz

Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

Ye it’s a TD5. I’ve seen the gasket in some kits but not the one I got. I can’t find it separately. I may buy another kit with the gasket included.

28th Dec 2023 3:19am

jim4244

Member Since: 13 Apr 2014
Location: Bedfordshire
Posts: 808

2007 Defender 90 Puma 2.4 CSW Zermatt Silver

Buy a sheet of this and cut it out to size?

https://www.ebay.co.uk/itm/264095421643?ha...UIbJq-qVYw

Jim

28th Dec 2023 4:20am

Inguz

Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

That's a great idea, I just wonder does it come in a higher temp rating. It says 440c short term. I spend a lot of time off road and mountain roads, I may be more long term at that temp, but still looks worth a shot

28th Dec 2023 5:13am

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