What length bolts should be used?
Thanks

Dave

 

Just an 1/8th inch shorter will be fine.

 

Ok thanks

Dave

 

1/4-20 x 3/4

If you have a vise and grinder you can grind off the unthreaded nipple on the tips of the bolts and get to the right length.

 

Thanks for the idea and the pics.

Dave

 

many years ago i put the shorter bolt theory to the test and it did not work.3/4 bolt is to long and will bottom out as the oem is only a 1/16 longer but not threaded all the way as a standard bolt would be.i used 1/2 bolt and it torqued down perfect but again it did not work cause the root cause of the plenum is the two diff metals expanding and contracting at a diff rate.in fact aluminum expands/contracts twice that or 2x the rate as iron.oem metal plate is sawing at the plenum gasket pushing said gasket out very similar to a head gasket being sqeezed out.thats the reason mopar and fel-pro designed a metal/metal core gasket.for the price of a aluminum plate its worth the peace of mind that this proven repair will not fail.

 

Wrong. The two metals theory has been disproved multiple times here. If you couldn't get a steel pan to seal with shorter bolts, and a good gasket, then it would be the workmanship I would question. I went and did the math on the 'dissimilar metals' theory, and the movement was measured in ten thousandths of an inch. Not enough to make any difference whatsoever.

 

your math and advise has no experience actually working on 2nd gens only copy paste from what you have read.i actually wrench on my ram and have done alot of modifying/testing first hand so my math and advise workmanship come from experience working on my ram not from reading it.

 

AHHAHAHAhahahahaaaaaa. I am not even going to bother with any more of a response than that.

 

i apologize if the truth hurts so dont throw rocks and not expect them to be thrown back with experience