Jack: I would like to build a killer engine too. I found from my buddies
who race TR4s that building a killer engine is possible but the weak link
is the crankshaft and rod combo. Oh yes we do run carrillos but havn't yet
upped the anty with a billet crank. Some of us are secretly investigating
getting pop-ups but don't tell anyone it's a secret.
BTW if your going to build a "meaner" engine you'll need a solid copper head
gasket -which I sell for (believe this) -$40.00 plus shipping(about $5.00).
Mordy Dunst
Dr. Gasket
Gasket Works
818-301-8816 office-fax
818-358-1616 home office mail box
Triumph racing for fun not points.
______________________________ Reply Separator _________________________________
Subject: piston to head
Author: "Jack W. Drews" <vinttr4@FORBIN.COM> at INTERNET
Date: 9/11/96 8:16 AM
I race a vintage TR4 and am having much fun with it. It has been so
reliable this year (knock on wood) that I may not have much to do this
winter except mop up the oil on the floor and freshen things up.
I'm considering building a "killer' engine.
A friend of mine who is into national level competition in motorcycles
claims that one important ingredient in an engine like mine is to
minimize the piston crown to head clearance in the squish portion. He
says that motorcycle people assemble engines so close that they 'click',
and then shim apart. On the other hand, there are some pistons available
for Triumphs that achieve higher compression ratios with a pop-up
section in the open area of the combustion chamber.
What's the current state of knowledge on this subject?
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