[Fot] TR6 motor rebuild

[Charly Mitchel]

I have another question about rods.  Has anyone taken off to much material 
from the stock rods?  How much was it?  What happened to the rod?

Just think ahead  for my grinding process.
Thanks
Charly Mitchel
 TR6 #44

----- Original Message ----- 
From: "Charly Mitchel" <charly at mitchelplumbing.com>
To: "greg" <gtlund at cyberspeedway.net>
Cc: "FOT LIST" <fot at autox.team.net>
Sent: Friday, December 14, 2007 7:09 PM
Subject: Re: [Fot] TR6 motor rebuild


> Greg, great information.  I've looked in to getting Venolia pistons at 
> about
> $100 a piece and I've been thinking along the lines of using the stock 
> rods.
> I have the whole selection of Kas' books and plan to do the lightening as 
> he
> recommends.  Where do I find info on the Cosworth pistons? Are they
> available in the USA?
> Thanks, Charly Mitchel
> TR6 #44
> ----- Original Message ----- 
> From: "greg" <gtlund at cyberspeedway.net>
> To: "Charly Mitchel" <charly at mitchelplumbing.com>
> Cc: "FOT LIST" <fot at autox.team.net>
> Sent: Friday, December 14, 2007 4:06 PM
> Subject: Re: [Fot] TR6 motor rebuild
>
>
>> 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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