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What make of eight speed mack or fuller? terry

Hi guys I’ve been having issues with my mp8 with the egr. If I unhook the egr valve wire will the truck still run or will it go into derate?

I don’t believe they are available any more. The spring usually brakes inside the valve. unscrew the body. A diesel pump shop should have a replacement spring. Last time I did one I grabbed a few extra springs but who knows where they are hiding now…

I’m looking at a truck with a Mack 9 speed. Can I swap in an 8 speed in the same place. Is there any difference in length between the two?

Since a blown head gasket has led me to an in-frame on my 2000 etech 460 that has 1.8 million on the motor and 750k on the current build, I'm pondering changing the cam and/or lifters. The motor ran great and the cam looks good, but I don't know if it, or the lifters, have ever been replaced. I've read from this invaluable resource, bigmacktrucks.com and it's members, that the lifters can go bad and take out the cams in these motors. Are cam failures common enough to justify going deeper and spending thousands of more dollars? How about lifters without the cam, would that be a better idea? Or even just the eup lifters, as they seem to be the biggest problem? Joey Mack, if you're out there, I read a post from 2022 that said you were using a pai cam and ceramic lifters. Would you recommend that combo for the etech?

That is great. Congratulations.

I think I'm on the right track now. Thanks for all the valuable recommendations guys. I wish the last one in this engine would have had Joey Mack's advice used the silicone a bit more sparingly. It took half a day to pull the liners and I thought I was going to break the puller. They must have used a whole tube on that engine.

Learned that lesson for sure!

Excellent thanks for that …. Well on your way … bob

We made smoke today. IMG_1181.mov

Be sure you use ONLY ethanol FREE gas!!!!!!!

Thanks for the well wishes everyone, first day went well, here's to many more. Hope to see a couple of you at the truck show at the NC Transportation Museum in May!

Is this for American Truck Sim? I play that from time to time, with mods for Mack R's and Superliners of course. Definitely interested to learn more about this mod if so!

Since the Mack won't fit in there, might be a good time to sell it and get something a little bigger and stiffer.

He said "they only blow away if you close the sides in". And Zina said "we need to close the sides in". So they came back and closed the sides in.

Truck looks terrific lotsa nice work

Ok had my new fuel lines made today I was in and out of there in a half hour… bob

If it will make you feel better,,, nothing moves very fast here … nice going bud

After a couple years of life getting in the way, I'm finally getting back into the swing of things working on this unit. With fresh batteries and fresh gas in the carb, it fired up relatively easily after not being run for 4+ years! I've changed the oil, drained the bad gas, re-primed the fuel lines, and chased a clog in the fuel line, and have it starting and running pulling gas from the tank. It has developed an intermittent squeal while running, which I haven't gotten to look into it too deeply yet but am guessing it's either the water pump or generator, as it seems to be coming from the front of the engine. Hearing it run again has really given me motivation to jump back in and continue working!

I know I have some scans of old slides from when it was yellow, I'll have to dig into my files and post them!

On a more serious note (like as compared to the Morton idea) What did the guy that made it have to say about it ? He seemed to have some input about it blowing away, maybe he's seen this before and has a suggestion. Or maybe you could choke him a little ????

I am going to say it's a Euclid. Maybe a 5LLD. Curved fenders and the rounded upper rear corner of the door windows look like 50's era Euc to me. Also has the triangular fuel tank running crossways behind the cab common on Euc dumps. Darts were usually had squared off cabs and sheetmetal. LLD Euc's often had twin Detroit 6-110's each with its own Allison powershift 4 speed, one driving the #2 axle, the other driving the #3.

I have been intrigued by this thread. Those short braces on the inside corners of the rafters as well as the braces at the peak are all secured with 1 screw on each side.. 1 screw allows pivot... if those braces had 2 screws spaced apart as far as the assembly would allow it would stiffen it. Each brace needs 8 screws installed. 2 on each side at both ends... yes the screws are small, but multiple screws will tighten it up.. and you will be able to keep your clearence on the gable ends without having braces or cables in the way of tall vehicles seeking shelter.

I'm too afraid you may be needing purchasing a big bag of normal 1/4" or so machine screws than drill each hole to the size and install them with self locking nuts at the inside and rubberized washers at the outer side. Those self-tapping srews could be Ok for attaching lining sheets or roof portions. But no go for putting the structure together.

No KW sold to Unit Rig.