instagatermm

Wile on topic whats the highest RPM for a E6 or E7 . Not talking factory specs, but what hotrodders or tractors pullers would let them spin to. Is the RPM limited to valve train restrictions or rotaitional mass of the crank and pistons? reason I ask is it sounds like the detroit diesel pulleing crowd winds there engines up pretty high.

From everything that i have heard, 2100 rpm is safe. 2200 to 2300 rpm may not hurt anything. A friend of mine told me that you can get them wound tight around 2375 rpm. I am not an expert by any means, But the truck i drive has a 1989 E6 and turns 2100rpm. Another driver turned his up to about 2250 rpm. He has a 1991, E7. He has been running at that rpm for over two years running about 3500 miles a week with no problems so far. I hope that this helps.

Your messing with the smoke control if you don't mind the smoke , you won't hurt it with that!

1 turn would have done the job!

Is that the pre boost adjustment? And do you know what the other screw is? This is the first pump that i have messed with. I turned the gov up a little. It has always smoked like a freight train anyway. It is just real sluggish on the low end.

Raybing,

I've got several of those low rpm motors in both MR's and one DM every truck was low rpm some were em6's and some were em7's all robert bosch pumps, (I've put e6 pumps on e-7s and vice versa..) I could never get the plug off the back side of the pump, while on the truck, like b61mack said, but he is totally correct... if you pull the aneroid cover off the top and pull the torque plate off you can get to it from the top of the pump. otherwise pull the pump off and have it done in a diesel shop.

pay attention to the location of the torque plate.... it is adjust able, sliding it towards the the front of the motor will increase overall HP, but also so will raising the RPM, I've gone as far as changing the slope on the torque plate with good results... I could ramble on all night... here is a link to a web site that explains it on a a dodge truck (virtually the same pump) http://www.thedieselgarage.com/forums/show...5523#post165523

If this doesn't help I've got a couple of these pumps in my shop I could take pictures of them for you.

I have an E6 motor with an E7 bosch pump. I am not sure if it is an american or a robert. I have been playing with it a little bit. There is a cover on the back that had a seal on it. Inside is two screws with locking nuts. One has 8 mm nut, the other has 10mm nut. Can anyone tell me what these are and what they do. I turned the 10mm screw in about 3 turns and it made it more responsive. Am i messing up or what?