rhinoo

I did tune my e7 and it’s a powerhouse now. I am leery about anyone else driving it though because in those long pulls I have to lift up on the accelerator a little or it egt’s get a little warm. Does the 2 valve let it heat up even more?

Ok. 11 liter sounds better than 10.. is there any way to tell if it’s a two valve without removing the valve covers? It does have a 13spd behind it so that will help

I was gonna add a pic of the tag but I can’t figure it out. 😆

Guy found the engine tag. It’s says E6-350R… I’m a little bummed because the e7 in my dump truck is impressive with stage 2 injectors and a big turbo but I talked to Brad at Rochester and he said we can still make it run good but a 10 liter engine just seems awfully small to get a whole lot out of.

Looking at buying an 688st and the guy said his father in law had a rebuilt e7 engine into the truck. Was wondering if anyone can identify the engine off of a couple pics I got. I have an e7 in a Rd dump truck but haven’t been around an E6. Thanks

Mack didn’t have one and was $250 and said it was on back order. Fans spins but has some resistance. I am replacing the O-ring on the power steering pump and all the hoses this morning, when I get it back running again I will mess with the fan a little.

Na, it’s noisy as hell about all the time it seems. I think if I rev motor up to a high rpm it may let up some but rarely ever notice it not being loud while driving. If they are only $100, I will for sure pick a new one up tomorrow. I will also go ahead and blow the radiator out good while I’m at it. That teacher was actually a pretty good one. One of the most caring teachers I ever had. He probably only told me that and not the other students cause he knew I wasn’t dumb enough to chop my fingers off but it was definitely one I never forgot. Lol.. I guess I was wondering more if that was even a factory option on that fan or if someone had done a cheap fix on it but sounds like that’s what they put on them. I’ve been running it on the farm for over a year and still running strong after y’all helped me get some bigger injectors and some more fuel to a bigger turbo someone had installed on it before I bought it. That 350 now will easily push my brothers 425hp c12 in a t800 over any hill when we run together. Thanks for the help.

I felt the strip in the front like you are talking about. It seems to hardly ever shut off. Engine temp never gets over 180 in dead of summer. My auto mechanics teacher back in the late 90’s taught us to test those fan drives by holding on to the fan blade while someone started the vehicle and as long as you can hold it, it was good. I asked what if it wasn’t good and he said you gotta be quick…lol. don’t think I’m gonna be attempting that trick on this big fan. Gotta run to Mack in morning, guess I might price a new one.

Got a 98’ Rd688s with an e7-350 and the engine cooling fan seems to run too much. I own several semis and they all are air operated but this motor has a fan drive type fan on it. Im not sure if this is even correct or not? I assume it works off of a thermostat built in to front of the drive? I can turn it with engine off but has some resistance to it. It looks like it had been replaced recently. I can start it up at 20 degrees and it will be running wide open. Any help is appreciated.

I was on here a while back and had bought a truck with an upgraded s-400 turbo which had terrible turbo lag. I added bigger injectors and made a few tweaks to the pump. Truck runs great now but egt’s are a little warm. 1050 degrees behind turbo @ 36-37 pounds of boost. If I’m driving it and get in a long pull I can let out of throttle and get it to drop down but at some point one of my lead foot drivers will be in it so I’m thinking I need to cool it down. My question is, if I get rid of the 4” exhaust will that help or do I need to back fuel down a little? I really like how it’s running and hate to defuel it.

Thanks for yalls help again. Found a couple exhaust valves that were a little tight but not bad. I think it should be ready for them big loads now. 😁

No brake unfortunately.

Ok, finally found the marks. I guess someone put a clutch in at some point and installed the pressure plate bolts in those holes. I was looking at the empty holes. I also just noticed my valve cover stated specs of .016 and .028

This is not mine but looked the same. That part of housing that sticks out with a hole in it looks same as mine but mine had a steel plug in it. It didn’t seem if it were going to come out easily.