Alright if anybody ever has their head of and sent to a machine shop have them do a 3 angle grind on the valve seats. When my head gasket went out i did all my own head work at school. i did a three angle grind and before with the stock injectors and pump cranked i could hit 1200* egts pretty quick. now no matter how long i keep my foot in it with 100 horse pods i can barely get to 850*. alot less smoke and runs a hell of alot better.

 

i have a ported head off a 97 on my truck, DDP 80hp injectors, and my pump maxed out among other things, and i can't keep my egt's under 1300* at W.O.T. so i can't say that how you ground the valve seats would affect your egt's

 

thats what they do on high HP gas rigs to help the seal and flow but i would not see a benefit on a diesel being you have the turbo pushing the air

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theres no way in hell that just doing a 3 angle grind did all that for you
if so everyone and there mother that owns one needs to do it

 

i dont know but it made i world of difference on my truck. i suppose the three angle grind just allows air to flow a little better.

 

oh it dose but i have a 97 head which flows more to begin with then its ported and polished and i barely saw a 200* drop

 

I would say your pryo is junk. It happens. Or your not getting as much fuel somehow.

 

that is also an option

 

Y'all be careful grinding on the valve seats as they are induction hardened, integral from the factory. Getting heavy-handed with the grinder can result in needing to install service valve-seats.

Read:





Integral Seats (default)




Service Valve Seats (continued from bottom of above)

 

good point david