[Fot] Center main support

[Tony Drews]

I run that setup, it was an uncle jack trick.  Here's what he wrote 
about that (on my engine building tips page):

"I also like to strap the center main to add rigidity to the bottom 
end.  To do this, mill off the cast face of the main flush with the 
surfaces for the head bolts. Get a front strap for a Chevy 400 block. 
You must enlarge the holes in the strap  and you must use longer bolts. 
  Some  builders feel that this is totally unnecessary, but since 
starting to do this, I have never had a main bearing deteriorate faster 
than a rod bearing, which is something that happens more frequently than 
you would expect."

Regards, Tony Drews

On 11/22/2019 3:58 PM, Phil Gott via Fot wrote:
> Has anyone seen the need to add extra support to the center main on the TR wet sleeve engine? We have an engine that has a steel bridge cross-bolted underneath and supporting the center main cap. Is this needed? Just took 3 factory cranks to the machine shop and all three were bent about .002 in (.002 run out at center main when supported on first and last mains.) Two of these were raced, the third was removed from a tired street engine. note: None of these cranks came out of the engine with extra support at the center.
> Curious as to the need for the extra support.
> Thanks,
> Phil Gott
> 114 TR4A
>
> Sent from my iPhone
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/tony@tonydrews.com
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20191122/c610e902/attachment-0003.htm>