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Owned by Robert

CutterUp Diesel Lab
102
5.0 (1)
$15/month

Learn Cummins engine building, machining, troubleshooting, and performance from real shop experience.

Skoolers
153k
Free
317 contributions to CutterUp Diesel Lab
Time to work on trucks?
Well, we’re not quite there yet or definitely steps closer. Quick progress video.
0 likes • 17h
@Addison Wood seems that way. What do guys do that can’t fix stuff do ?
1 like • 16h
@Addison Wood man that would be nice lol
Cold Crank PSI
Brand new build, I just cranked it over for the first time. Running about 18PSI on oil for cold crank. How does that sound?
Cold Crank PSI
1 like • 1d
@Vlad K just need to hear it crank for the motivation ? I get that lol
0 likes • 1d
@Vlad K that’s not a bad idea then
G56 rebuild part 2
Ok finally said enough dicking around, bearings have been here for 3 weeks, hunting or not this needs to be done. Sunday night drained tcase and tranny Removed front and rear driveshaft -I can’t believe it but even with 340k these u joints are fine including the cv on the front Monday night Supported tranny with atv jack and blocks of wood/ratchet straps Removed tcase and cross member Tuesday night Pulled granny and got it out. Checked primary shaft end play while cold -5 thou Split the cases Check out the bearings, they are done. I am sooo glad I did this. All gears look good so far
G56 rebuild part 2
1 like • 2d
Nice when a project comes together!
Decking a block
How far can I deck the early Cummins block? I see they make .020 thicker gasket so I imagine at least that far. My thought was decking the block to bump up compression by reducing piston to head clearance. But if I over decked the block then set my clearance by milling the piston tops then I could also reduce bowl volume and further increase compression. Even if I could get away with decking it .030 or .040 I'd be in the money I think
0 likes • 8d
You can take .020 off for sure. What compression ratio you looking for ?
0 likes • 2d
@Jeff Pope what compression ratio did you end up on your engine ?
Candles are still lit
My buddy Jeremy is still beating the 6.7 that I did a couple years ago for him. Man he is hard on that thing lol.
Candles are still lit
4 likes • 6d
@Brent Nowell he sent me this so figured I would post it
2 likes • 6d
@Brent Nowell king of turd island 🏝️ lol
1-10 of 317
Robert Winkworth
6
874 points to level up
@robert-winkworth-9280
Welcome! Whether you’re here to pick up a few tips, show off your build, or hang out with other wrenchers, this the place to be. Enjoy!

Active 14h ago
Joined Nov 25, 2025
T2H1J4
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