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B model Mack gas engine parts


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"OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK"  Thomas Edison

 “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’

P.T.CHESHIRE

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Doesn't Matt Pfahl (Pfahl Mack Restorations) have them?

Or you can call the fine folks at Watt's Mack.

126SB127C - Complete gasket set for EN and ENF 707A and 707B engines

553GB3266B - head gasket (individual) EN707 with 20 studs

3029-8213C - head gasket (individual) EN707 with 18 studs

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  • 2 weeks later...

The final head torque for a Mack EN 707 is 150 ft lbs.  I can't seem to find torque value for the first or second pulls.  I would probably go 50 ft lbs on the first round and 100 on the second in sequence.  After a little run time, the head bolts should be rechecked.

Mack EN 707.jpg

Jim

It doesn't cost anything to pay attention.

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There may be an official pattern.  IDK?  I try to work from the center out on manifolds.  Refer to a torque chart depending on fastener size, type of material and threads per inch (TPI).  I probably under torque due to not wanting to break a cast iron manifold that may be difficult to replace.  As usual, check them again after a few heat cycles. 

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Jim

It doesn't cost anything to pay attention.

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