[Fot] TR4 main bearing caps

[Bill Babcock]

Five main engines have a lot more friction than three mains do.   
Probably wouldn't make more horsepower unless you were able to do  
something magical as a result, which I doubt. With a good crank we can  
already reach 7K. I doubt you see anything happen above that without a  
lot better flow.

A good flowing head, now that's  interesting.


On May 26, 2009, at 9:00 PM, Tony Drews wrote:

> We've taken to "strapping" the center main.  Not sure it helps but  
> it doesn't cost much to do.  Have the top (bottom?) of the main cap  
> machined off flat with the bolt seating surface, then buy longer ARP  
> cap bolts and a Ford 400 front main strap.  Drill out the holes in  
> the strap to fit the bolts and bob's your uncle.
>
> If we could figure out how to make it a 5 main motor, now THERE's  
> something to aspire too.  That and good flowing cross flow heads and  
> we'd have some POWER baby!  Saw a MGA with an alumimum cross flow  
> head at Road America a week or so ago.  He was faster than me...
>
> - Tony Drews