Indy SR Heads ..

[67coronetman]

Ok guys here we go i have a set of Indy SR Heads its on a motor Run in stand i have ran the motor good and then i Retorqued the heads to 70 Ft Lbs is that as much as needs to be or can it go a little more.. Reason i ask is i have a very and i do mean very slight oil dripping back by the #8 plug area on the little ledge i call it right at the very back of the block where the heads meets the block..

 

[lewtot184]

torque depends on the quality of the bolt. if the recommended torque is 70lbsft don't exceed that. over torqueing puts the fastner in to yield and it will never hold it's designed clamping force.

any oil leak you have won't be from the head bolts. it's either the valve cover or the oil lines in the back of the head.

 

[dvw]

Corner of the valley plate is a prime suspect.
Doug

 

[lewtot184]

Corner of the valley plate is a prime suspect.
Doug

yep.

 

[67coronetman]

Thanks i will check i don't think it's that but i have been wrong before...

 

[dvw]

Make up a fitting to add compressed air in the valve cover. Turn it down low enough that the flow can be stopped by putting your thumb over the end of the fitting. Plug the breather off and air up the PCV port in the valve cover. You will quickly find the leak. Once you use this method you'll wonder why you didn't think of it years ago like me. Cheap, quick, easy.
Doug

 

[66Satellite47]

What valley pan are you using. I spent two months chasing an oil leak. Turns out my 440 Source valley tray didn't work that well with my EDE RPM heads. Went back to a stock valley pan, problem solved.