Richard,
While working on the car today, I thought more about your email. The
following questions came up: how much had you shaved the head, what
type (thickness) of head gasket were you running and was the problem
created by a sticking valve?
Allen
On Mar 15, 2008, at 2:34 PM, Richard Good wrote:
> Charly,
>
> I went .012" above once. Made good power till a piston kissed the head
> and disintegrated. It happened at 7000+ rpm. I have stayed within a
> couple thousandths above since.
>
> Richard Good
>
> Charly Mitchel wrote:
>
>> Friends,
>> I'm building a race motor for my TR6 and have a few questions
>> about the deck clearance. On the last motor I built, I made the
>> block zero
>> deck clearance on all the pistons. To do this I had to shave the top
>> of
>> several pistons and mill the block .020". The motor I'm using now is
>> a later
>> TR6 motor with the recesses for the head gasket seal. This recess is
>> about
>> .030".
>> While measuring the piston travel for each cylinder I find the
>> distance from the top of the block varies from .004" to .013". I
>> tried
>> swapping pistons around to see if there was variance in rod centers
>> and this
>> seemed to make no difference. I'm guessing this is from maching of
>> the crank.
>> While I was pick up my block from the machine shop I was speaking to
>> a fellow
>> that was building Ford 4 cylinder racing motors and he was saying he
>> likes to
>> have the piston .008" above the deck. This is supposed to help with
>> combustion swirl (I think that is what he called it).
>> The thoughts I'm having
>> is has anyone tried this with the TR 6 cylinder motor and if so what
>> were the
>> improvements if any?
>> This would be fairly easy for me to do at this point and
>> would do it if it made sense.
>> I'm also concerned with partially milling off
>> the recess around the bore and what consequences that may have. I
>> have no
>> problem completely removing the recess since that is the style of the
>> earlier
>> 6 motors.
>>
>> Thanks for any input.
>> Charly Mitchel
>> TR6 #44
> _______________________________________________
> http://www.team.net/donate.html
>
> Fot mailing list
> Fot@autox.team.net
> http://autox.team.net/mailman/listinfo/fot
>
> You are subscribed as awashatko@wi.rr.com
>
>
Jody & Allen Washatko
N65 W5567 Columbia Road
Cedarburg, WI. 53012
USA
tel. (262) 375-6888
_______________________________________________
http://www.team.net/donate.html
Fot mailing list
Fot@autox.team.net
http://autox.team.net/mailman/listinfo/fot
|