2+2 exhaust system

Technical advice Q&A

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DT
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#1 2+2 exhaust system

Post by DT » Thu Sep 19, 2013 7:27 pm

Rebuilding my 2+2 4.2
I am keeping the original exhaust manifolds but don't want the down pipes siamesed and them separated into the silencers

Has anyone found a suitable system that runs separate pipes the length of the vehicle off standard manifolds

Thanks

David

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PeterCrespin
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#2

Post by PeterCrespin » Fri Sep 20, 2013 1:02 am

If it's an auto you'll he hard-pressed to avoid the gearbox sump.

If it's a manual just make up clamped or welded-on bridge pieces between the end of the downpipes and the beginning of the silencers.

Pete
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 2001 Vanden Plas

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Topic author
DT
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Joined: Fri Jul 15, 2011 10:57 am

#3

Post by DT » Fri Sep 20, 2013 9:22 am

Thanks

It is not an auto

Am I correct in thinking you buy the non 2+2 downpipes, 2+2 silencers and then get a piece of stainless to bridge the two

Any good supplier in UK for the bridging piece

David

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tim wood
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#4

Post by tim wood » Fri Sep 20, 2013 12:07 pm

Hi,
i had this made by etype fabs. I guess now that Calssic fabs would be able to do this.

in reality its a simple length of tubing

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Heuer
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#5

Post by Heuer » Fri Sep 20, 2013 12:35 pm

You could try PD Gough in Nottingham. They made me a s/s system for my OTS and a mild steel one for the FHC but ideally you want to go somewhere where they will make the parts up and fit them for you because you are going bespoke. Bear in mind you will need the flexible bits in the middle of the secondaries. I suggest a quick Google of 'stainless steel exhausts' and your town name to find a specialist, give them a call and drop by for a chat. Marrying up different systems can be a nightmare because the tube diameters can vary.
David Jones
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1997 Porsche 911 Guards Red
2024 Lexus LBX

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PeterCrespin
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#6

Post by PeterCrespin » Fri Sep 20, 2013 2:59 pm

DT wrote: Am I correct in thinking you buy the non 2+2 downpipes, 2+2 silencers and then get a piece of stainless to bridge the two

Any good supplier in UK for the bridging piece?
I would think every exhaust place in the country could do this.

They almost all have swaging/bending machines to fit practically anything to anything. Two nine-inch straights would be trivial for an apprentice, never mind a pro, and dirt cheap. Just assemble everything, measure the gap and the downpipe OD and silencer ID and go buy your bits if you can't trailer the complete car.

Pete
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 2001 Vanden Plas

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