Freightrain

It happened! It's in there. Let the fun begin.....all over again.....ugh. It went well. 1.5 hrs from friend backing into driveway until he pulled back out. Took a little finesse, wasn't perfectly engineered, but it got set in place. I can't post pictures of friends truck because it is a Cat service truck and it will get him in trouble with corporate. We just back from lunch and it just started pouring rain.

Well, the magic moment may come Saturday? It may be getting installed. My friend has been busy and I told him if we can't get together by Sunday that I was going to order a telehandler for Monday delivery. I need to get this moving, time is wasting away and it has been two weeks already waiting for him to break loose from his schedule. He told me he was busy, but could do this for me. The $1000 rental for a day is just a drop in the bucket at this point. $500 for the machine, the rest is delivery and fees. I told him I m not mad at him, I just can't continue to wait for "the day".

I got the lid off my pump and find this.. Little different from my old 237 pump rack. My wandering mind wants to tinker but I'm holding strong.....☹️. "I just want a little more..."😉

Bingo! eBay has 4.5" clamp with that old part number. Should have it here in a couple days. Thanks again!

Thanks. I asked another Mack guy and he said my 237 clamp should fit. But, mine was from a fire engine(I think) and has a cast iron downpipe that slips into the turbo. I don't think it is the same as a typical truck outlet like on the 300. It has a band clamp down below picture.

I don't have a VIN to work with, that's my problem. When I installed the 237 someone here gave me a VIN and that helped with working on it. I need a VIN from a 300+ truck. I have a VIN when I ordered the steering box but not sure that was a 300+ truck. Or how generic is the exhaust clamp between motors? It is smaller then the 237 clamp but it had a cast downpipe that isn't on this engine.

Don't think I will be there. Hell, can't seem to get the engine put back in...🙄.

I've seen both Marmon and Marman listed. More then one person has a spelling for it. I found a 4.5" clamp but from the runaround I went through on the 237 exhaust clamp 10 yrs ago, there are different widths of taper?? Not universal one size fits all. Or is it?? I went through this with Tip turbine clamp. Found manufacturer but they don't make clamps anymore. The clamp on the intake side of turbo has R.G. Ray on it. Lots of variations.

Ok, I need some assistance getting the proper part number for the exhaust clamp on my 300. It is 4 7/16" diameter flange. Mack turbo 631GC5134P4X. Dealership are pretty worthless so I haven't even tried there. I googled V band clamps but couldn't come up with a chart of sizes. Of course the input side is a different size so I can't go off of that.

Can you find the tag on the pump? That is what will really determine what it is rated at no matter what the valve cover says. I traced my pump number to what it is rated for by looking in my Mack manual.

Wow, sounds like you have quite the predicament. I got "lucky" when buying the engine I am rebuilding. It was advertised as a 285. Upon looking at it, the engine was a 300+. I think it was a transplant and previous owner didn't look at it closely. The VIN said 285, so that's what they thought it was. I quickly made the deal. Not being well versed in possibilities of your engine upgrades, it is likely there is something you can do to increase power slightly. Doubt it can go far reliably, but anything can help.

Typical 511 series, 2"-6" bore. We have same kits at work but can go down to .75 bore with smaller head. Similar to this.

Most all pin bushings are copper colored,unlike rod bearings which have a copper base and metal coating on top. .0015 you should just feel it wiggle,barely. Not real scientific way to measure it but with skill you can tell if "ok" or bad. Taking to a machine shop is best. Any one with a pin hone will have the proper bore gauge to check it. When I did my 300, I have a Mitutoyo bore gauge that was able to check mine. It was good enough not to need redone.

Quality basically. Has to be "show quality". No patina.

I finally received my chain I ordered. Took 6 days and it was only about 30 miles away. Shipping was cheap or I would have just drove up last Monday and just picked it up. I welded my cross bars on the spreader pipe. I am not a certified welder but it AIN'T coming loose! I contacted my friend with crane to see what he has going on this week. I have to make two hook plates to weld on top of bar to chain to hook to. I can use the plasma cutter at work to make short order of putting holes in the plates. I did fill the transmission with the 50w oil I bought. It is ready for installation!!