[TR] TR4a manifold swap

Jim and Diggle diggle at clear.net.nz
Tue Aug 25 14:41:13 MDT 2009


I am about to do install a TR4A exhaust on my 62 TR4.
Apparently its compatible with my car if I use the exhaust manifold in
conjunction with the 4A inlet which I also have.
I purchased the double down pipe that bolts onto the manifold but my budget
means that I will not be able to buy the the piece that bolts onto the
downpipe through to the middle of the chassis.
Instead I have had a collecter welded onto the downpipe that reduces it to
one pipe.
I will then cut the old pipe that goes through the chassis and connect it to
the new modified downpipe.
The cost of importing the piece that connects the downpipe to the rest of
the exhaust is very high considering I live in New Zealand.
Also I suspect that because that piece was made for a TR4A chassis I would
have to modify it anyway.
Modifying the downpipe was very cheap to do.
Will it be worth it for 4HP, hmmmm, who cares its too late now to worry
about silly things like that now.
PS I used the mild steel downpipe instead of the stainless one as its made
of thicker metal which gives a deeper nicer exhaust note.

Jim and the 62 TR4


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