12H power ??

[Allen Bosely]

Just out of curiousity.
Can a 12H have the boost upped a bit and add an intercooler and get say 155HP and 260ft lb torque?

That's about what AXT says they get out of a 2H with no intercooler.

It's not really something I will use as they seem as expencive as a 1HD-T for some reason.

It would be nice if they were reasonably avalible. But seem rare and costly.

I've been thru all the old psts that I could find. Not much that I could find.

Allen

 

[roscoFJ73]

Just out of curiousity.
Can a 12H have the boost upped a bit and add an intercooler and get say 155HP and 260ft lb torque?

That's about what AXT says they get out of a 2H with no intercooler.

It's not really something I will use as they seem as expencive as a 1HD-T for some reason.

It would be nice if they were reasonably avalible. But seem rare and costly.

I've been thru all the old psts that I could find. Not much that I could find.

Allen

Time has shown the 12HT to be an extremely durable engine,so I dont think some extra boost would hurt.
It is a pity about their availabilty.

 

[troopie]

Allen,

I have a 12ht in my troopie. With some work on the fuel injection pump and some extra boost (double as stock) it should deliver around 165 HP. I don't know about torque yet, but it should also have a reasenable increase. This is done without an intercooler. Which is still on the wishlist.
I had the tweaking on the pump done by a specialized shop.

HTH

Mark

 

[denis]

A friend of mine has an interccoled HJ61 with a mild fuel setting and dynoed at 160hp. These engines definately have potential.

 

[Tapage]

A friend of mine has an interccoled HJ61 with a mild fuel setting and dynoed at 160hp. These engines definately have potential.

how much boost .. ? 14 - 16 PSI . ? without intercooler . ?

I will be happy with those numbers in my 2H with turbo and intercooler setup ..

 

[denis]

intercooled, I don't remember how much boost but no more than 12-14 IIRC ? Stockish would be what, 8 ? Say the improved efficiency from the intercooler at least balances the loss of efficiency from the higher boost, you would need 160/136x(15+8)-15=12psi for 160hp at the same revs as the stock 136 with the correct fueling.

 

[Tapage]

I'm planning at least 12 PSI of boost .. maybe max 14 .. I'm stiull thinking in a boost controler with a relay to control 12 to 14 psi ..

 

[Waggoner5]

I am running 10.4 lbs of boost and adjusted the fuel boost controller to match. I have never dyno'd it but the results put the trucks performance back to where stock 31" tires felt. I went to 35's and a SOA.

 

[Tapage]

I am running 10.4 lbs of boost and adjusted the fuel boost controller to match. I have never dyno'd it but the results put the trucks performance back to where stock 31" tires felt. I went to 35's and a SOA.

With stock gearing . ?

Your esxhaust is 2.5 or 3"