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TR4/4A Phoenix Stainless Steel Sports Full Exhaust System Inc Manifold experience

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Tim Tucker

Tim Tucker

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Want to share my experience installing the Phoenix Stainless Steel Sports Full Exhaust System w/manifold sold by Rimmer Brothers. In a nutshell: the fit was perfect.
The exhaust header fit perfectly over the studs and the intake required very minimal material removal to clear the exhaust header. The only real issue is the thickness difference between the intake mounting flange (.5") and the exhaust mounting flange (.3875"). I dug up some .120" thick metal suitable for shims to place under one end of the 'bridge clamps'. I felt these were required to ensure adequate pressure on the exhaust header sealing flange. The balance of the exhaust system was an easy fit. The rear hanger is perhaps a bit of an overkill.

My TR-4 runs C1825 Strombergs with 2H needles (after Joe Curto rebushing). The mixture required ALOT of enrichment before proper running was obtained. The power gained is impressive. Needless to say, I wish I had done this MANY years ago! I'm tempted to destroy my OEM exhaust manifold so that it could never be used again! I hope this in someway helps a TR-4 owner.
 

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The best mod here is to "mig" each manifold "pig" on the low side and re-install. I have never seen a kit that got the flange
thickness right..It is also helpful to check the flange for warping. Made the mistake once, blows out the gasket.
Mad dog
 
I put a Bass stainless system (English made) on my TR4A (has twin pipes) but no header. It is a well-made system I think but it is too quiet. I wonder if stainless is quieter in general and if it will mellow out with a little more bark. Just put it on so not many miles yet. Not really looking for alot of noise but...... Bruce
 
mctriumph said:
The best mod here is to "mig" each manifold "pig" on the low side and re-install. I have never seen a kit that got the flange
thickness right..It is also helpful to check the flange for warping. Made the mistake once, blows out the gasket.
Mad dog
Click to expand...
Excellent advice. Thanks!

bammons said:
I put a Bass stainless system (English made) on my TR4A (has twin pipes) but no header. It is a well-made system I think but it is too quiet. I wonder if stainless is quieter in general and if it will mellow out with a little more bark. Just put it on so not many miles yet. Not really looking for alot of noise but.
Click to expand...
From what I can gather the stock/OEM TR-4a exhaust manifold is FAR superior to that of the TR-4. The phoenix system is rather loud...but I enjoy it.
 
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