I Broke It Again #5 Burned

[TCluff]

I don't believe I'd push a CR engine without individual port pyrometer leads running to a logger that shows you the hottest cylinder... seen too many of these "hung an injector, nuked a piston" posts/pics scares me

my pyrometer was in #5 the one that burned and it told me nothing, it never went over 1200 deg, but it only idled down to 750, maybe my pyro is giving me a false reading... , someone needs to hook me up with some dual cp-3 fuel, i want to run my IIcp-3 on the motor with a stock fca and a stock cummins cp-3 on the belt also with stock fca, im going to send my rail and connector tubes out for some touching up, i can handle block work and all engine building, but im helpless in the fuel department, i will probably add a second egt probe just for safety and run the bigger water inj on the snow, im also going to get rid of the rokkteck crank sensor, for less timing, not sure whose cam and springs i will run yet???

 

[AMassaro]

Alot of the damage we are seeing on the CR seems to be due to excessive timing. Aside from the rocktech, what else where you running that advanced timing?

 

[RobertP]

my pyrometer was in #5 the one that burned and it told me nothing, it never went over 1200 deg, but it only idled down to 750, maybe my pyro is giving me a false reading... , someone needs to hook me up with some dual cp-3 fuel, i want to run my IIcp-3 on the motor with a stock fca and a stock cummins cp-3 on the belt also with stock fca, im going to send my rail and connector tubes out for some touching up, i can handle block work and all engine building, but im helpless in the fuel department, i will probably add a second egt probe just for safety and run the bigger water inj on the snow, im also going to get rid of the rokkteck crank sensor, for less timing, not sure whose cam and springs i will run yet???

the high egt wont usally tell the whole story, the high idle egt did.



what happens is the injector never closes, letting the piston cool enough for the next event, so it melts, egt's dont allways tell the story there is more to it that a trained ear sometimes cant see. it all atarts from the tank and haveing the best fuel filtration---this is the begining of a fuel sytem that wont let you down. we have been there several times with wades truck and finally got it figured out resently.

 

[TCluff]

Alot of the damage we are seeing on the CR seems to be due to excessive timing. Aside from the rocktech, what else where you running that advanced timing?

, at the time it happened i was running an edge ez for pressure and a tst old twins program for timing duration, and of course the rokktek,

 

[TCluff]

the high egt wont usally tell the whole story, the high idle egt did.



what happens is the injector never closes, letting the piston cool enough for the next event, so it melts, egt's dont allways tell the story there is more to it that a trained ear sometimes cant see. it all atarts from the tank and haveing the best fuel filtration---this is the begining of a fuel sytem that wont let you down. we have been there several times with wades truck and finally got it figured out resently.

, i am running the fass with racor which i believe is 3 micron, which is a whole lot better than stock, do you have something better that will work with my fass, also i want to run my fass at a lower psi, like maybe 20psi, from what i understand you dont have to run 50psi with dual cp-3 pumps... .

 

[RobertP]

, i am running the fass with racor which i believe is 3 micron, which is a whole lot better than stock, do you have something better that will work with my fass, also i want to run my fass at a lower psi, like maybe 20psi, from what i understand you dont have to run 50psi with dual cp-3 pumps... .

your right the lower the better with duel pumps, amd we have the 2-microns that we use along with some other goodies.