Exhaust manifold

YellowJA · Post by **YellowJA** » Wed Feb 23, 2011 8:41 pm

Where can i get a top mount turbo manifold for the twin cam head, The VR4 one is a low mount type

OLD FART · Post by **OLD FART** » Thu Feb 24, 2011 6:12 am

YellowJA wrote:Where can i get a top mount turbo manifold for the twin cam head, The VR4 one is a low mount type

You may have to go custom steampipe as I have done

Mick · Post by **Mick** » Thu Feb 24, 2011 6:35 am

as oldy said, custom champ, at least then you can make it to suit the lack of space and your turbo

Sargeant_Khan · Post by **Sargeant_Khan** » Tue Mar 01, 2011 10:52 pm

you can buy a $150 stainless off ebay, cut the pipes off as close to the plate as possible, then flip it and re weld it. Works like a charm.
:beer

enthuzed · Post by **enthuzed** » Tue Mar 01, 2011 11:06 pm

Got a link for that SK? I imagine it's chromed & would need rechromibg after welding. Has yours stood the test of time? Did it require extra bracing?
Got pics you could put up here please?

fugazi · Post by **fugazi** » Tue Mar 01, 2011 11:57 pm

enthuzed wrote:... I imagine it's chromed...

Stainless... bracing e-bay-stuff is good! :D

Lummy · Post by **Lummy** » Wed Mar 02, 2011 7:35 am

Here's my VR4 Top mount exhaust manifold - it was a custom job.

Works nicely, but if I had to make another, I'd design for a little more space between the dump pipe and the clutch master.

enthuzed · Post by **enthuzed** » Wed Mar 02, 2011 1:44 pm

Bit of a stupid late night comment from me fugazi.

Link to the eBay unit & pics of the install would be awesome.

Sargeant_Khan · Post by **Sargeant_Khan** » Thu Mar 03, 2011 8:43 am

I dont have anypics on me. Just search it on ebay, you WILL find the one im talking about. It was off the shelf from someone who imports them in sydney, came in 3 days.

Bracing? You mean to take the weight off the turbo?
:beer

enthuzed · Post by **enthuzed** » Thu Mar 03, 2011 1:57 pm

I remember reading ages ago that someone bought an eBay manifold and it cracked between the tubing and the mounting plate. The turbo weight would add it's own stresses to the manifold plus the heat cycles...so yes, something el cheapo bought from eBay that stands the test of time is worth knowing about.

stariontron · Post by **stariontron** » Fri Mar 04, 2011 11:22 am

enthuzed wrote:I remember reading ages ago that someone bought an eBay manifold and it cracked between the tubing and the mounting plate. The turbo weight would add it's own stresses to the manifold plus the heat cycles...so yes, something el cheapo bought from eBay that stands the test of time is worth knowing about.

ive bought 2 aftermarket stainless manifolds from trademe and they have both cracked. got a custom one made up and it is noticeably thicker and heavier than the cheap ones. should hopefully last the distance

enthuzed · Post by **enthuzed** » Fri Mar 04, 2011 2:42 pm

Where are the failing points?

stariontron · Post by **stariontron** » Fri Mar 04, 2011 3:48 pm

they always crack around the flange. without fail. some people say its just the weight of the turbo, others reckon its caused by an insufficiently secured exhaust acting like a 2 meter lever on the back of it

stariontron · Post by **stariontron** » Fri Mar 04, 2011 3:49 pm

ive also heard that its just thermal fatigue. apparently stainless just really isnt the right material for exhausts

enthuzed · Post by **enthuzed** » Fri Mar 04, 2011 3:55 pm

What is? Mild steel with it's highly corrosive (well, iron oxide) properties?

Austarion

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