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4 contributions to CutterUp Diesel Lab
12valve front cover reseal
So new hear. I have a question is the fel-prep front gasket kit any good or should I get a different one. I worked for Cummins or Cummins shop for year and never thought twice about it until I priced one recently.
0 likes • 20d
Are these single use only? Like if mine doesn’t leak and I take the cover off can I just put it back on without changing the seal?
Compounds!
Hey Rob and all, would love some of your expert advice tuning my pickup! Goal: enough power to haul a trailer full of cows down the highway at 75, with enough manners to not black anyone out getting there. Usable low end power is what I’m after, and I have the opposite 😅 l've had it for over ten years and fired every shot of the parts cannon I can find and I'm still not there. It's got plenty of top end power, but the low end is absolutely atrocious and no matter what I do I can't get rid of the smoke. Turbos don't spool until roughly 1800 rpm and anything under that is a luggy mess. Once I hit 2k it drives pretty good, but it's pain to keep it that high around town or pulling a trailer. Max boost is 45ish at WOT, but I never get there in normal driving. 25-30 is the most it usually sees. Mods: DPS stage 1 compounds. 362/475. THD 6 x 11.5 injectors Hamilton towing cam Head studs/valve springs/pushrods HVLP lift pump M&H Timing spacer Ratman DV’s Ratman fuel pin 3200 rpm spring NV4500 Water/meth but not really using it Pump settings: Smoke screw: all the way backed out. Starwheel: almost all the way backed out. Power screw: 7 full threads showing. Recently backed it out 2 full turns to help smoke. Definitely lost some top end though. Timing: somewhere in the middle, hopefully around stock but there’s multiple marks so unsure exactly. I have adjusted the timing to every 1/8” from the head the slots allow and it never gets noticeably better than where it’s at. What I’d like to do: figure out how to run smaller compounds like a k27/369 but not sure my budget and fab skills will cooperate. Other ideas include figuring out how to make an s300g work as the manifold charger. Also does it need different injectors because people say Eric’s just run dirty? What would you do? Anyway, all the advice is much appreciated, and I’d also be interested in buying a smaller compound kit or piping that would work if anyone has stuff they’ve made! Thanks!
0 likes • Aug 14
Of course I look on Facebook and there’s a 99 HX35 two hours away 🙄
1 like • Aug 15
Awesome thanks! I’ll report back how it goes haha
Welcome! Introduce yourself + share a pic of your project / truck
Let's get to know each other! Comment below what you do for work and what your working on for projects, a photo, workspace or whatever you got!
0 likes • Aug 11
Hey folks I’m John from Wyoming, I raise cattle, train horses, build saddles, and mess with this firstgen. Hope to learn some tricks to make it run better!
VE Pump Timing Spacer
Curious on everyone's thoughts on the timing spacer has anyone used it and noticed a difference, in theory it seems like a good upgrade. Considering ordering one and trying it out.
VE Pump Timing Spacer
1 like • Aug 11
Is there a situation where you’d recommend removing the spacer? For example my setup currently has way too much top end and not enough low end and I’m battling excessive smoke under 2k rpm. Timing at the slots is roughly stock
1-4 of 4
John Birkholz
1
1 point to level up
@john-birkholz-9430
Cattle rancher making a sweet firstgen work truck!

Active 1d ago
Joined Aug 11, 2026
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