how hot can we go

Discussion in 'Dodge 2nd Gen Cummins 5.9 (24v)' started by little blue dodge, Mar 22, 2007.

  1. little blue dodge

    little blue dodge Member

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    Hey guys and gals, new here and got a question. I have a 2001 2500 laramie with most all the goodies. I smoked a piston a year ago, a turbo 2 yrs ago. I have 115000 miles now. Also a 6sp. I have ultra lite gauge pod and am wondering hot hot is to hot when not towing ( around 600 for me at 65 ) and when towing. I have upgraded my fuel since my piston failer ( no 4 ) and am running the improved in tank plus a inline pusher and the stock pump ( now around 20 at idle and doesn't chng much at speeds ) I have a edge 5 level box and tow on level 2 only. I also have the luk cermettallic clutch kit rated for 1000 ft/lb. Heading for warmer weather this summer to go play and don't want to burn up again. thanks for the help
     
  2. Diesel Nut

    Diesel Nut Well-Known Member

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    Keep it under 1350-1400 under most situations. Racing you can push 1450, but you are on borrowed time.
     
  3. little blue dodge

    little blue dodge Member

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    thanks

    Thanks diesel nut, I've seen 1200 pulling hard but not for extended times. Also since you might know my pyrometer pick up is located on the exh. side of my turbo before the down pipe, I've been told this is incorrect. The truck had alot of the goodies on it when I bought it so I have no installation instruction to tell me whats right or wrong.
     
  4. RJF's Red Cummins

    RJF's Red Cummins TRC Staff Moderator

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    That explains why you are only seeing 600 empty.

    Put it in the manifold where it belongs, it's nearly useless in the exhaust system. By the time that it shows an increase when put in the exhaust system, the turbo, manifold, head, and pistons have already been seeing that hot temp for a while.

    1,200 post turbo is likely why you lost a piston and turbo, I think that translates to 1,400+ pre turbo, plus the delayed time it takes you to see 1200 post turbo.
     
  5. Hossbaby50

    Hossbaby50 Well-Known Member

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    You want your sender pre-turbo in your exhaust manifold. I have heard of guys hitting 1500* for short bursts while racing with no problems but for anything over a minute or so you don't want to run past 1250-1300*. I have seen 1250* while towing and had to back out of the pedal to keep the temps at about 1200*.

    Harley
     
  6. little blue dodge

    little blue dodge Member

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    will do

    Thanks guys for the onput, will take care of this problem immediately. Also if you guys have any other tricks to help keep it cooler let me know, thanks again !:)
     
  7. Hossbaby50

    Hossbaby50 Well-Known Member

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    Having good airflow in and out is the key to keeping it cool. Do you have a 4" turbo back exhaust? If not that will help cool the system down. If you have that then adding a aftermarket hi-flow exhaust manifold like an HTT or ATS will also help cool things off.

    Harley
     
  8. Diesel Nut

    Diesel Nut Well-Known Member

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    2001 was the first year of the pressed in valve seats. High temps tend to help those fall out and wreck motors. Get your pyro moved and try and keep it under control.
     

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