Then you still haven't grasped how fuel injection timing impacts cylinder pressures.

Sorry to have wasted your time.

 

im aware of this but your saying timing alone (without extra fuel) will blow a gasket?I would think youd get to a point where your injecting into the flamefront and you can even accelerate

 

Enough timing even with stock fuel will do in a HG... A original factory gasket will take less abuse then a newly installed HG.

Point is case, with 1/8" timing my factory gasket with the head bolts re-tourqed to 135 ft/lbs lasted about 1 month running 60psi... A new cummins gasket with the head bolts torqued to 135 ft/lbs lasted a year so far... Oh and I was spraying a .082 jet of nitrous to it.

The point I'm making is that while 1/8" of timing most likely wont hurt a truck in good shape... It can push a truck with a hurt gasket over the edge... And at 200,000 miles the head gaskets are not once they once were... So yes, there is a chance that as little as 1/8" bump in timing can blow your head gasket, is it a good chance, no, but a chance.

 

Thank's fot all your great input,my old truck has over 200,000 miles so I am gonna leave the timing alone for now.I have enough stuff to fix!

 

dont let all this scare you away.The timing bump is an excellent mod for cooler temps and some more economic mpgs.It will really fly on the freeway too.thats what it did most for me.My .3mm static advance really opened up a door to freeway passing!

 

Bump it a 1/16" use teh line between the pump housing and teh timing case

 

Your EGT gauge shows less but you are leaving more heat on the piston.

 

hey i didn't mean to scare you i was just saying don't go overbord. 3/16" seems to work well for me, try an 1/16 or 1/8.

 

Thank's I'm gonna bump it an 1/8th tommrow!