Air flow, turbos, fuel and more?????s
Hi guys, As some of you know I have blown up the board with questions. Sorry for wearing eveyone out. I am in the middle of my build on my 6.5 and I am looking for as much info as I can get. I build turbo charged V-6s-v-8s for a living so forced induction is not new to me. I am looking to make 250-300 at the tire with my 6.5TD. Forget the mechanical limitations of the block crank etc. Lets focus on making the power. Opinions welcome.
For a gas engine for every pound per minute of air you can make 10HP. So if your turbo flows 20 ppm you can make 200HP. I know this is over simplified but its the basics.
Does the same rule apply to Diesel fuel?
Looking at the maximum air requirement of a 6.5 with 15psi of manifold pressure
1500rpm/19ppm
2000rpm/26ppm
2500rpm/32ppm
3000rpm/40ppm
3500rpm/46ppm
This also aSSumes you can get the air in and out of the engine.
I see no way you can do this with any of the GM turbos GM-8 etc. Not even close. I know you see 15 psi on your gauge but there is no way that turbo is moving that flow rate of air. I have also seen the back pressure on the GM turbos is crazy hi. Much over 8 psi. is 2 to 1. and then some. I am thinking that I should use a turbo that will meet the air requirements 15 psi manifold pressure. I am thinking a turbo in the 40ppm range. Thats enough air to make 400HP will easily supply more than enough air at a reasonable boost pressure with a minimum back pressure. Jim, JK, RJ any thoughts?
Now how do we get the fuel to make this power with the DS4 pump and marine hi pop injectors? I do plan on having Kennedy burn a chip for the truck. I just hate to wear those guys out with questions till I figure out how to attack this monster.
It was posted earlier that the DS4 can be turned up to 91mm . (I am assuming this is done with a chip)
Approximately How much power can be made at that setting?
How much would that be in Pounds Per Hour of fuel ?
At what approximate Air fuel ratio is diesel performance optimal?
Lonnie Diers Extreme Automatics
1994 Chev 2500HD 532,119 miles 21,300 GCW towing machine.
Original engine, injectors, replaced head gasket 1 injection pump, 3 turbos
Ready to install ( was ready now changing to 18.1 pistons)
New engine 4 bolt splayed steel caps
Lightly ported heads
Polished intake port matched
HX35W Turbo
Intercooler (very efficient tube fin design)
Marine Injectors hi pop
Cooling upgrades
3" DP
4"exhaust
remote mount PMD cooler
Fresh air intake (in the making)
Gears ???? have not decided looks like 3.42
250HP at the wheels or bust (maybe both)