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Pressure lines would be external. I'd drop the pan and drill the holes into the block from the outside. I'd have a plastic vacuum nozzle cut at a 45 with a hole in it that the bit goes through., up against the block. So I'm drilling in a vacuum. When the bit breaks through, the majority of...

I have the truck parked up North, so I can't take a look. If I win the auction for a log trailer this Thursday, I'll be up there next week, using it to tow it home. I'll get the CPL then. I probably should have written it down by now. I appreciate your help. All I know about it is it had a...

I don't know. I assumed the NHC250's came with non top stops, but your question makes me think I was wrong to assume that. I believe it's original with 30,000 miles on it (and 1,000 hours) but I haven't had them out yet. I'll be pulling a 30k trailer for personal use, so not working too hard...

Like many, I'm tuning my 250 up a little. I've built lots of motors but not a large diesel before, so most of my knowledge is only from reading. I also know many active people on this forum have hands on experience with small and big cam Cummins. All I've done so far is a straight pipe and...

Just looking at pictures, it looks like the 8341 has yokes close in size (or the same as) what's on the truck now. It also looks like the 7041 has a different size yolk on the input vs the output. Smaller on the input I believe. I expect I'll have to do some machining to get things to match...

Thanks Topo! I appreciate you responding and I appreciate hearing from someone with experience with one. That was exactly what I was hoping to hear. I'm gonna pull the trigger on a 7041. They seem a little easier to find, a little cheaper and if it held up to what you used it for it'll be...

Thanks Topo! Did the Mack with the 290 also have a 7041? If so, I'd be curious what your GVWR or GCWR was. My Cummins will be tuned close to that and be running around 60k I'm expecting.

I don't know if it was pulling any real weight. It was an old video too, but it did get me looking around more and seeing that yeah, I usually see them in single axle trucks, sometimes gas or small diesel, but not a lot of the bigger class 8 trucks. hmmm. It's looks like I'm running across...

Thanks again for your input. I have zero experience with that box. I was mostly going off of a YouTube video I found with a Spicer 5 speed and 7041 behind a Nifty 250 on a cab over. I did read about the linkage interference when the joints get worn so I’ll try to design around that best I can...

Thanks! You're probably right about the 18 speed. I may end up wishing I went that route in the end. Thanks for the input on the 7041. I haven't found any torque/hp specs on them (probably because it's an auxiliary so who knows what gearing someone puts between it and the engine) I'm going...

I have an M820 chassis cab (so the extra long wheelbase) that I am modifying into a tractor using a '53 International Metro van body as the cab. I'm sliding the tandem all the way to the back of the rails, moving the Rockwell transfercase back and (I'm thinking atm) I'll add a Spicer 7041...

Hell yeah! That sounds great!

My car has a water-cooled turbo and that coolant is shared with the engine, which feeds the heater core... so technically, your thoughts are spot on. I don't know why all turbo compressors aren't water cooled (on water cooled engines) actually. It seems like a very effective way to help cool...

I think you'll really like the 17 button. I put a 15 in mine and I have to keep a pretty light touch on the pedal to keep the fuel pressure down a bit, where I like it. I'll probably end up putting a 17 (or close to it) in. I don't know if you have a fuel press. gauge or not, but I'm glad I...

Just jot down your egt's, boost, fuel pressures (if you got em) etc. I'm curious to see what you have and can selfishly learn from it!

I for one am looking forward to hearing all about how she runs. Nice work!

Also, after I changed the oil, there are some fairly big trees that my friend cut down to 4 ft. high stumps that his tractor can't seem to budge. I was gonna rock them with the truck but when I lined it up with the frame rail and pushed, the back wheels spun, the front axle engaged and it just...

Ok. Trip went great. The engine feels significantly stronger and it maintains 60 mph (gps) with a light throttle now. It feels like a 14 liter engine. I ran it at 2200 rpm, at between 200-210 psi pump pressure and the EGT's stayed at 900 F or lower. I leaned on it kinda hard on purpose on a...

Just drove it around town to check things before the trip tomorrow (which will be a 2 hour drive on the Interstate) and I kept the rail pressure down below 200 psi and the egt's hit about 700-800 F. I was only as high as low range 5th, though, so hardly a real test. I'll be keeping a close eye...

The one that came out was a 45, which had the rail pressure at about 160-170 ("snap test"). It would go to 2200 and I would be careful to not spend much time there. With this higher rail pressure, I let off at 2400 before it could go any higher. The EGT gauge is going in today for it's 25...