Melting pistons.
- Thread starter McRat
- Start date
I didn't read the entire thread so forgive me if I'm speaking out of turn. I'm just not sure if anything the CR Dodge guys do is applicable as they are still stacking etc. and don't have control over the system like we do with EFILive.
FYI, every run I made with my LB7's stock short block was near 2000 deg F. This was before EFILive so you all know who was tuning it.
I had multiple loaded chassis dyno tests that were over 30 seconds in duration at that EGT and the pistons showed no visible signs of stress after 98,000 miles and over 300 chassis dyno runs on a Superflow.
IMHO, it is much easier to make things live at 500 rwhp and becomes exponentionally more difficult as the power level and rpm increase.
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Here are a couple of pics after I put No 7 rod out the side. We know for sure we were well over 750hp at this time. The rods all were bent until no 7 broke. This was with a Supercharger into a GT45 and egts would struggle to get past 1300. The pistons (except for No7 that got mashed) looked in excellent shape apart from where some debri from an air filter has bounced around on top of No5. im not sure on all the details of the tune that was in this at the time but Mike done the tune, he may like to comment on this. Im way at the back of the bus as far as diesels go but any opinions on this one?
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Stock injectors, dual cp3's, 26,000 rail and trying to keep the shot in the bowl. The thinking at the time was more pressure less pw? I don't know, egt's were low " for us ". I couldn't make up my mind if supercharged and having lower egt's and less drive pressure out weighed higher turbo drive pressure with higher " for us " egt's waiting for the turbocharger to come on and dealing with the smoke?
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I am guessing no. I have looked at diablo predator tunes and they add little to no timing and a chit load of pw iirc the 85hp tune from diablo adds no timing and has 3000 usec of PW i would imagine with the 120 tune loaded and the power puck the rails were seeing low numbers
Wow, looks like everything was in the right order........looks like just a structural failure of the stock rod??
Why do you think rods bend you nitwit?
Hit your thumb with a hammer and tell me we didn't have a structure failure.
I would really like to see a well setup high psi water system on a high hp dmax. The snow system is a great system for what it was made for which is not a 900hp truck running down the salt flats. I think it is something worth experimenting with but i dont have a high hp duramax to do it with
we need to get you a disguise so more people will sell you stuff:secret:
Why do you think rods bend you nitwit?
Sorry.
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After much thought, it seems that high timing about 30* with short duration and adequate RP25k or so is looking to be the best on paper for the d-max....
with 60% or bigger injectors...
with 60% or bigger injectors...
pretty vague statement considering that to figure propper timing , you need to know a duration and rpm .