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Exhaust manifold
Posted: Wed Feb 23, 2011 8:41 pm
by YellowJA
Where can i get a top mount turbo manifold for the twin cam head, The VR4 one is a low mount type
Re: Exhaust manifold
Posted: Thu Feb 24, 2011 6:12 am
by OLD FART
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
Posted: Thu Feb 24, 2011 6:35 am
by Mick
as oldy said, custom champ, at least then you can make it to suit the lack of space and your turbo
Posted: Tue Mar 01, 2011 10:52 pm
by Sargeant_Khan
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
Posted: Tue Mar 01, 2011 11:06 pm
by enthuzed
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?
Posted: Tue Mar 01, 2011 11:57 pm
by fugazi
enthuzed wrote:... I imagine it's chromed...
Stainless... bracing e-bay-stuff is good! :D
Posted: Wed Mar 02, 2011 7:35 am
by Lummy
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.
Posted: Wed Mar 02, 2011 1:44 pm
by enthuzed
Bit of a stupid late night comment from me fugazi.
Link to the eBay unit & pics of the install would be awesome.
Posted: Thu Mar 03, 2011 8:43 am
by Sargeant_Khan
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
Posted: Thu Mar 03, 2011 1:57 pm
by enthuzed
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.
Posted: Fri Mar 04, 2011 11:22 am
by stariontron
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
Posted: Fri Mar 04, 2011 2:42 pm
by enthuzed
Where are the failing points?
Posted: Fri Mar 04, 2011 3:48 pm
by stariontron
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
Posted: Fri Mar 04, 2011 3:49 pm
by stariontron
ive also heard that its just thermal fatigue. apparently stainless just really isnt the right material for exhausts
Posted: Fri Mar 04, 2011 3:55 pm
by enthuzed
What is? Mild steel with it's highly corrosive (well, iron oxide) properties?