Competition WOT issues and outcome

[Jim Fulmer]

As I sit here with my humble pie (fork in hand) I'll explain the recent issues I had and what the outcome was.



Odd, but I noticed on my WOT runs that the smoke was clearing up..... hum, 12v, 370's, 215 pump shouldn't be totally clear, but she is running great... . ok cocky till WOT. If you follow me I posted about changing the Gov arm so it hits the plate lower... . cool still there.



Now it's just doesn't feel right at WOT, 3/4 not issue! Turn on the Water/Meth... worse, bigger injectors worse, N2O... . bad, backfired so hard (hard like a granade) that bent two push rods #3 and #4 Intake... . odd!



Now it's down to banging on #2 only, so I start running down things to try and figure it out... ... .

these are here so you don't spend wasted time/money

I changed out the springs, locks and retainers. Locks were beat up a bit, spring were ok but not to new tightness. Same outcome! Fuel pressure... hum never been an issue but JetPilot comes in here, but Doug I've run it to 3 psi before with no issue. Well pressure at WOT was zero or less as the gauge hit the bottom so fast.



So I change the filter, get rid of the fuel heater(Joe George instructions) check the pre-screen and finish the install on the Aux system that I had never completed... ... ... . 12AN feed, A1000, Filter, 10AN up to the pump. Now it's better as I can hold 40 psi or so at WOT.



Outcome: The stock lift pump (156k) is holding 35 psi and just a little lower than 20 at WOT. Aux on holds better than 40 psi, starting out at 55 or so.



Final: Either ask your buddy or ask the TDR... ... we are here for that!



Jim

 

[WUnderwood]

good to hear that you got your bugs worked out, and that monster is still breathing hard Oo.

 

[Jim Fulmer]

Along with these changes I pulled the turbo and manifold, installed new gaskets on the manifold, the cool multilayer ones, and put the new ported exhaust housing on I got from I. I. Man what a difference on the low end spool up, it now starts building boost as soon as you drive off. The high boost hit now is 10 or so lower... . 52. I need to recheck drive pressure and see how much it dropped over the standard housing.



Jim

 

[RyanB]

Final: Either ask your buddy or ask the TDR... ... we are here for that!



Jim

Jim- I couldn't have said it better my self! The guys here on the TDR have helped me with my issues like no others. Thru my whole conversion and motor build someone from here was always here with help and idea's! Your self included!



My hat goes off to all those on here helping others!!!!! its what makes this a great forum!



RyanB

 

[Signal73]

so as a result of this thread I decided to yank mine today for the heck of it, its a ol 95 work truck so I figure its shot. Well there was fuel (I assume) in the electrical connection and brittle plastic pieces in the pre filter so I think it was toes up anyways. Broke one of the torx screws off in the housing removing the temp sensor. Other then the diesel bath, not a bad job. I never had any hard start issues to begin with but we will see if there is any benifits to loosing this pos in the fuel system.



Jim

 

[wildmanben]

I ditched my fuel heater and havent needed it since. Started up at 16* the other morning w/o being plugged in.