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Owned by Robert

CutterUp Diesel Lab

105 members • $15/month

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

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297 contributions to CutterUp Diesel Lab
Valve seat crack
Was cleaning up my buddies 12v head and noticed a crack between the valves on cylinder one, and the injector hole to the intake valve on 1/2. Crack went into the seat on intake 1. Anybody know if it’s alright to run it like this? Goal is 350-450 hp.
Valve seat crack
0 likes • 10h
Well depends on who you ask. The machinist says no as it’s not right and is only going to get worse. The back yard guys in me says I have seen lots like that run. Just know if you run it that way at some e point you will have an issue
Is this dual tandem trailer for sale a scam?
I know this isn’t what we normally talk about but I put it in bullshit corner because of that :) Wondering if you guys think this trailer has been converted from a single axle to a dual? I am about to meet him tomorrow to buy, but he said it takes a 1 7/8 ball…. Red flag lol. That ball is only good for like 2000lbs and a dual tandem trailer is supposed to hold 7000lbs… Also noticed the V portion of the frame looks like it’s but welded to the frame for the deck, I would have thought a real dual tandem trailer would have the V portion running under the deck… but I’m new to this and don’t want to get scammed. If anyone has any input I would appreciate it :) https://www.facebook.com/share/19Q61j2fxs/?mibextid=wwXIfr
0 likes • 11h
The 1 7/8 ball is good for trailer weight of 3500lbs I think ( would have google ) The axles can range a lot too. lol like 3000-3500 axles from the pics. In the pics I wouldn’t say it’s 1 7/8 ball. For the price is the lights and brakes work and it sound that’s pretty cheap
Business is not for the faint of heart
Well as you guys no the seat and guide is down. That’s only part of the story on the aug 7th we had an attempted bank hack on the business account. So we have had no access to the account till today. Good times. But on the bright side we move a bunch of shop stuff and the new seat and guide machine showed up today at 4pm. So the last few weeks have been just stupid. I am going to be glad when the shop is done and I am moved.
Business is not for the faint of heart
0 likes • 3d
@Tyler Basham It’s a upgrade for sure. But not a lot the machine I had was more computer controlled then this one. Just older
1 like • 2d
@Jeff Pope I wish I got down time. Working 7 days a weeks 14-16s Working and moving and doing shop stuff
1st gen summer....
So i have been busy busy with my 1st gen i got it and it was extremely rough, after ALOT of cutting and welding and changing some doors, and converting a door from manual to power... fenders hood rockers, drip rail on top some box panel patchs and about 200 dents..... i finally stopped trying to fix all the dents so some will just have to stay hahaha.... anyways its a shit ton of work i have done and alot more to come.... but i started painting it and i am doing this all outside in my parking spot, in the middle of the mountains. sanding a truck to bare metal is the most time consuming thing you will do.. probably 80 hours in just sanding.... i know it is a sin to paint outside, bugs dust just everything. but i am doing it for the love of the truck! ill post more pictures and stuff at the end of the summer. just figured some people might enjoy seeing it. cheers
1st gen summer....
1 like • 2d
Man I have painted lots of units outside. Have to work with what you got.
Rocker Arm Washer
Any idea on the PN on this? This sits behind the snap ring. Lost one.
Rocker Arm Washer
1 like • 4d
I don’t have quick serve anymore. But that’s the pic call Cummins and tell them you need number 7 on the diagram
2 likes • 3d
Cummins pn 3900245
1-10 of 297
Robert Winkworth
6
1,038 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 5h ago
Joined Nov 25, 2025
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