Charly,
The TR6 rod is fine if you follow Kas' comp prep instructions and
shot peen them. We used to shift at 7600 rpm and the rods never gave a
problem. Carrillo rods used to use 1/4" rod bolts and the only people I
know who broke TR6 rods were Carrillo users. Carrillo did this because
they didn't/wouldn't split the rods on a diagonal and there isn't any
room for bigger bolts on a conventional pattern rod due to the small
bore of a TR6. I had talked with Crower at one point and they thought
they could use 9/32" or 5/16" bolts. I also investigated Pauter and at
the time they thought they could do a diagonal split rod. The piston
acceleration on a TR6 is brutal because of the long stroke short rod
combination. At 7000 rpm it is about the same as a 4" x 3" small block
Chevy at 10,000 rpm.
First choice for pistons is Cosworth. We ran one set for 12 years,
6-8 races a year. Arias is good too but the Cosworths fit the best at
temperature.
Greg Lund
Charly Mitchel wrote:
> FoT,
> I'm starting the rebuild on another TR6 racing motor and I'm looking for a
> little input as to which parts I should be using. I'll be running a CR of
> about 11.5:1, have a KB cam and a stock crankshaft with Cambridge flywheel.
> I'll be using the Lucas PI setup and will have a Tilton clutch.
> I know I'll need to go to some better pistons than stock and will probably use
> Venolia pistons.
> Anybody got any suggestions on pistons and rods? Is there a connecting rod
> from another manufacturer that will take the place of a TR6 rod that is
> better?
> Thanks
> Charly Mitchel
> TR6 #44
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