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trooper Tdiesel · 07-20-2011, 03:57 PM

i would start with 6 or 8 psi and see how your EGT temps are, and go from there.

you seem to know all ready but ill say it for others...
24/1 with a turbo is truly in a hazmat zone for faluer, if you don't know your EGT and boost presser, even then a long grade under load could take it out.

on the 6.2L they had pore cooling of the rear most pistons and the added stress of a turbo can take them over the braking point.
i love the electric water pump idea, BUT. if its pumping to fast or slow it could cook the engine do to lack of cooling. other than that its a grate idea.

your using a 6.5L block with 6.2L heads right? this should help the rear piston over heat/valve cracking/piston melting/ issue.

theres two gen of 6.2L if you did'ent know.
later heads have smaller valves to take the added stress, ford 7.3L 1993/94 and isuzus 2.2L 1986/87 did the same thing with there IDI diesels when they made them turbo d with the high compression.
before computerized DI injection came to on road use.

07-20-2011, 03:57 PM	#8 (permalink)
trooper Tdiesel live, breath, Isuzu-Ds Join Date: Mar 2011 Location: oregon Posts: 231 puddle jumper - '93 Suzuki sidekick base model energizer bunny - '86 isuzu trooper base model Clifford the big red dog - '84 GM S-10 durango Thanks: 1 Thanked 20 Times in 17 Posts	i would start with 6 or 8 psi and see how your EGT temps are, and go from there. you seem to know all ready but ill say it for others... 24/1 with a turbo is truly in a hazmat zone for faluer, if you don't know your EGT and boost presser, even then a long grade under load could take it out. on the 6.2L they had pore cooling of the rear most pistons and the added stress of a turbo can take them over the braking point. i love the electric water pump idea, BUT. if its pumping to fast or slow it could cook the engine do to lack of cooling. other than that its a grate idea. your using a 6.5L block with 6.2L heads right? this should help the rear piston over heat/valve cracking/piston melting/ issue. theres two gen of 6.2L if you did'ent know. later heads have smaller valves to take the added stress, ford 7.3L 1993/94 and isuzus 2.2L 1986/87 did the same thing with there IDI diesels when they made them turbo d with the high compression. before computerized DI injection came to on road use. __________________ 1 86 T\D trooper with rare GEN 3 rods TRANS FIXED NOW DD 1 86 4WD 5sp pup is 2.3L gas, but plan on 2.2L diesel repower 1 91 trop, long term plan is a group buy of imported Isuzu 4JB1-T 2.8L I-4 engines, hoping to get price down to 2K not 3K plus 1993 sidekick my MPG toy, epa rating 26. i get 29/31 with stock drive train.