12Valve/CR Head P-Pump Combo

[Rockin S]

Is anyone out there running a 12 valve block and crank with common rail head with P-Pump? Reason I ask Is a buddy has this setup running a colt stage 5.5 cam with an ED 2.6 Map groove, It will not stay on top of the charger, I ran this block and crank with 12V head a few years ago and I never Snuffed out. This thing snuffs out bad.
4.88 Gears pulling in 4th
35" Truxus Tires
ED 2.6 .200 MG Turbo 1.32
12V block and crank
Common Rail Head
24 V Scheid Injectors
24V Pistons Fly Cut
Harts 13mm Ag Pump
Gear drive lift pump.
The thing is a total Pig and only time it Does not completely Snuff is if he pulls 3rd gear.

Im leaning towards the cam, Anyone have any input?

 

[ryanss22]

What rpm is he seeing down the track? Have a video of it? What's timing set at?

 

[Burningtire]

What's the intercooler setup?

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[Rockin S]

What rpm is he seeing down the track? Have a video of it? What's timing set at?

He is leaving at almost 6000 and ends up low 2000s, Timing is at 38 right now, he was at 36 and no change

 

[Rockin S]

What's the intercooler setup?

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Was running 2 Smaller units spliced together, Changed to one bigger unit and no change

 

[Burningtire]

What's he seeing for boost, drive psi, and air temps?

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[Rockin S]

I will see if he has a video

 

[Rockin S]

What's he seeing for boost, drive psi, and air temps?

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When he leaves its around 55 but rapidly falls off, Dont know drive psi and I think Post IC he is about 115 degrees

 

[94 12valve]

He is leaving at almost 6000 and ends up low 2000s, Timing is at 38 right now, he was at 36 and no change

He is losing 4,000 rpm when the clutch is let out? What CC is the injector pump set too?

 

[Rockin S]

He is losing 4,000 rpm when the clutch is let out? What CC is the injector pump set too?

Not Sure, We have tried lowering it, Increasing it, No Change He is about 1300 to 1400 Degrees, and Also this is a different pump and pump didnt change it either.

 

[ryanss22]

Not to be nosy, but is the cam big enough to allow the head to breath enough to use all the fuel? Or maybe to big a cam for setup? To lose 4000 rpm is huge.. a video might help.

 

[Rockin S]

I myself think its the cam, The head is a Fully Ported Big Valve Common Rail head, Heck a few years ago he was running a worn out P-Pumped 24 Valve and it would kill this setup

https://www.facebook.com/adrenalinediesel/videos/10155432087422805/ This was in Tulsa and It was one of the better Pulls

 

[khaoskustoms]

could the cam be degreed wrong?

 

[Rockin S]

Its Possible, I did forget to mention that the Cam Retainer was broken in 4 pieces, I would think that could throw it off some

 

[ryanss22]

I would check cam timing first and go from there.. Is it and adj cam gear?

 

[Rockin S]

I would check cam timing first and go from there.. Is it and adj cam gear?

No, Its just a Stock 24 Valve cam gear

 

[INTHERED]

Guy that runs limited pro stock tractors in our area preachs degreeing cam in to 93.We have tried with good results just idea.

 

[rawdog]

I'd say you ha e a major boost leak. And 6k on the line is a bit excessive, especially for a 4 valve

 

[Rockin S]

I'd say you ha e a major boost leak. And 6k on the line is a bit excessive, especially for a 4 valve

No Boost leak, In fact he changed everything when he changed intercoolers

 

[Burningtire]

Have you pressure tested the system to be sure?

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