Diesel Power Magazine 1st gen buildup

[Richie O]

I never had any marbles to lose.

[JQmile]

We had a diesel math section that explained HP and TQ in one of the last issues, didn't you guys read that one??

And as for me doing a burnout, due to liability reasons, it wasn't me, I hired a "pro driver" LOL.

Jason

[RSWORDS]

We had a diesel math section that explained HP and TQ in one of the last issues, didn't you guys read that one??

And as for me doing a burnout, due to liability reasons, it wasn't me, I hired a "pro driver" LOL.

Jason

Of coarse you did... and it was on a closed coures also right?

[JQmile]

We had a diesel math section that explained HP and TQ in one of the last issues, didn't you guys read that one??

And as for me doing a burnout, due to liability reasons, it wasn't me, I hired a "pro driver" LOL.

Jason

Of coarse you did... and it was on a closed coures also right?

Yup, we also had a fire truck and a team of lawyers standing right there LOL

[pulltilbroke]

What, No ambulance???

[SChandler]

JQMile, what are the plans this year for the truck? I saw in the March issue that you were planning on putting the 14mm head on the pump, do you have an ETA on that? Any other plans for the truck like head work or different turbo or intercooler?

[JQmile]

Still collecting parts. Still going to stick with the stock turbo for now, trying to see how far a 60mm will go. Going to go with a 14mm h/r and some other "stuff" soon, hopefully in the next few months.

[JQmile]

Poor truck's just been sitting.....might be getting a gear vendors soon though, hello full quarter mile passes! Hoping to get 30mpg too. Got a deal on a used GV and I am hoping I can send it in to be fixed (bad electronics). Other mods are still sitting on my desk at work

[JQmile]

Well, just got back from the dyno, and it seems like I now have multiple problems. With a stock turbo and DDP4 injectors, I made 301 rwhp. With a HTT 60mm upgrade, 6x16s, and a lift pump I made ......ready? 281 rwhp, a loss of 20hp. Here's the weird part--boost went from 32psi to 48psi, and EGTs from 1200 to 1500--yet still no more power.

My guesses to why I sucked on the dyno include an insane amount of drive pressure that's sapping my power, and stock timing--I heard you have to run a lot of timing with these big injectors, maybe here's the proof. It smokes like a train, so I know I'm getting more fuel. going to install a wastegate and bump the timing to the head and then see what happens. After that will be a "real" turbo. As always, feel free to chime in with advice and wild theories

PS-anybody actually buy that Cummins injection pump tool to advance the pump? or is everybody just bending wrenches?

[Richie O]

I bent my own wrench. I have the 60 gds and 6x16's on my 93 and it has pretty good power. I also have the stock crushed up exhaust pipe and stock muffler. I am at a loss why your power went down. My timming on that truck is also stock. I don't like the sound of my 89 with bumped timing so I left the 93 alone.

[soggy]

I bought a ratcheting s-wrench from lowes, hope you get it figured out I want you to beat that 6.4

[gear jammer 91"]

I got a set of "half moon" wrenches, that are shaped just like they sound, for like $20 at the local tool supply store. They work perfectly. Advance that timing and pull the wire off of the ksb solenoid. That should allow you to be able to burn all that fuel. Are you still running the stock down pipe?

[bgilbert]

Loss of 20hp? Was this the same dyno where you did the 301hp? That could help answer some questions. Either way all you gained with the boost gain and injector increase was alot more hot air, no power. INTERCOOLER TIME!!!!

[SChandler]

Well, just got back from the dyno, and it seems like I now have multiple problems. With a stock turbo and DDP4 injectors, I made 301 rwhp. With a HTT 60mm upgrade, 6x16s, and a lift pump I made ......ready? 281 rwhp, a loss of 20hp. Here's the weird part--boost went from 32psi to 48psi, and EGTs from 1200 to 1500--yet still no more power.

I've got two words for you: TUR BO. Even with the 60mm wheel, you are way out of the map for the turbo and as Bill said, you're pushing nothing but hot air into the motor. Hot air is not good. An intercooler and a bigger turbo would go a long way to better power numbers I'm guessing. Or a liquid form of cooling like water/meth or nitrous. But you're still going to be outside the map for the turbo. I don't think a wastegated housing on that turbo is going to help any other than as an educational experience for the readers of your magazine.

I bought the Snap On timing wrench. It works great.

[JQmile]

I guess we're going to see what happens when I lose 30+psi of drive pressure and get the turbo back in its range Don't worry I'm going to do a bunch of stuff after this also, I just want to see if the wastegate makes a difference by itself. Oh and how's this for cheap? A stock manifold and mini hood stack Now I can have smoke coming out from two different places on the truck!