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  1. simp5782

    Cummins 400 turbo boost and temp question

    Here ya go Chris. @ 72,240lbs. The swift truck gets about a 1/4 of a mile lead on me and i close it on a hill without getting passed by any other trucks. I ordered a turbo blanket and some exhaust wrap so I can get a little more boost. I was not on it all the way really as you can see the...
  2. simp5782

    Cummins 400 turbo boost and temp question

    If you want to lower your EGTs without much work Chris then add an extra cooler to the front of your truck. You would Simply run a hose from the pipe that goes to the top of the aftercooler to it and the hose from your thermostat housing to it so that the coolant that is going thru the...
  3. simp5782

    Cummins 400 turbo boost and temp question

    About right that is about 850 post turbo. I have an intercooler now that is as big as your radiator is top to bottom. So i was probably in that range with the aftercooler.
  4. simp5782

    Cummins 400 turbo boost and temp question

    Took her out today for a post intercooler test drive.... I used the NHC250 intake manifold with 4" pipes and a 41"x21"X3" intercooler actually made for the RG-31 MRAP that only has a 6.7L in it.... But it is bigger than what a Kenworth or Peterbilt intercooler would be. I chose it cause it was...
  5. simp5782

    Cummins 400 turbo boost and temp question

    My alternator is a 33SI. I used a normal civilian NTC400 alternator bracket and the same adjustment bracket. It is just strictly 24v though. Gauges are just Auto meter gauges. they are mechanical. The lights are 12v but i don't use the lights. I have interior lighting that allows me see them...
  6. simp5782

    Cummins 400 turbo boost and temp question

    Good read. http://www.landlinemag.com/Magazine/1999/May/BottomLine/diesels.aspx So around 17hp per lb of boost. I hit around 23lbs of boost on a short hard test. I do have a slight boost leak though. https://www.youtube.com/watch?v=aNnxdSOBSAI
  7. simp5782

    Cummins 400 turbo boost and temp question

    my small cam would run up to 1000 degrees easily and It logged near 200,000 miles with lots of extra fuel and air and it was NA with no squirters. A Big Cam will take 2700rpms or more and a good bit of EGT
  8. simp5782

    Cummins 400 turbo boost and temp question

    21/22 psi at 2150 empty truck at 27,880lbs
  9. simp5782

    Cummins 400 turbo boost and temp question

    I will bump this. So with the BCIII and the HT3B (167050) with a 26cm housing. Spools a little slow so maybe just swap the housing out with a 22cm (# 3521838) housing instead? I need to get my boost gauge finished for what I have now. Slight leak on the divided manifold vs undivided turbo i...
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