Problems gettin it launched !!

BlackMagic06 · Jul 9, 2013

Here's my situation. Just built a 6.0. carrillo rods ceramic coated piston tops, custom cam, egr delete, good pushrods , valve springs , 205 injectors , Elite vgt HO turbo, Banks cooler, billet converter, on 37's with 4:88 gears so around a 4:30 final. Got innovative programs. Truck falls on its face in a cloud of black smoke til the turbo catches up and WILL NOT boost launch at all , it pushes through the brakes !! EGT's hit 1600 right away. this is my first big diesel build and have nobody doing the same in my group , all gas fuel drag guys. Any helpful hints or ideas would be greatly appreciated. Thanks. :fustrate:

ford rules · Jul 9, 2013

How's your icp?

04stroker · Jul 9, 2013

You sure you don't have any uppipe or manifold leaks? Once spoiled what kind of boost pressure are you building?

Cutting-Edge Diesel · Jul 9, 2013

boost leaks? exhaust leaks?

Pizza pig · Jul 9, 2013

what stall converter? sounds like it needs some tuning too.

TooMuch03 · Jul 10, 2013

Possibly bad EBP sensor?

Mdub707 · Jul 10, 2013

Who's tunes?

So if I'm understanding this right... you can't get it to build boost on the line, but it's still pushing through the brakes?

4.88 sounds like a pretty tall gear. I would of stuck with like a 4:10 for those 37's. Most of my buddies who ran 37's ended up going back to 3.73's.

BlackMagic06 · Jul 10, 2013

I'm getting upwards of 35+ lbs once he gets going. Its all an "off the line" problem. Out of the hole he just wont light up. If you pin it from a stand still he sits there and billows smoke while he spools then he catches and lights right up. He'll hit 30 lbs then shifts and brings 35 lbs and so on. As for the pushing through the brake , I'm trying to get him to spool and have to 'feather the brake' trying to get a spool going and have to give up and let him roll and it still takes a couple/few valuable seconds to collect himself up and take off. Its like he's buried in fuel and not getting enough air. The turbo just doesnt spool up fast enough to match the fuel he's getting. The stall speed is stock (so 2200?), its just a billet replacement. Used an OBD II reader and the EBP sensor was showing as good based on what I read here about being within 1.5 of MAP and something else I wrote down. Checked boots and no leaks so far. As for the gears , with 37's that gives me like a 4:35.24 final drive ( Ford dragpak almost ,lol ). I'm looking for performance not fuel economy so based on what I should be making HP and torque wise , the gears should be an advantage in getting him moving wouldn't you say ? Gonna have to get in there and check all the piping everywhere again I guess , also I'm not super literate on the tech terms so ..... ICP ?

BlackMagic06 · Jul 10, 2013

aaaaaaaaah yes ICP okay thanks !!!!!! wow feelin not so smart on that one hahaha

Coxey Diesel · Jul 10, 2013

I'm taking it the truck is a man?

Pizza pig · Jul 10, 2013

Stock stall is 1800, whose converter?

Whytry · Jul 10, 2013

Is your vgt actuator moving? Are your vanes sticking?

JMart · Jul 10, 2013

Coxey Diesel said:
I'm taking it the truck is a man?

I always heard if it didn't have a stick it was a female.

Maybe that's the problem, you need to treat it like a woman.

HobbyStock62 · Jul 10, 2013

Coxey Diesel said:
I'm taking it the truck is a man?

hahahaha

drunk on diesel · Jul 10, 2013

you need a looser converter or more nitrous

smoking stroker · Jul 11, 2013

My truck is doing he exact same thing right now pretty sure the torque converter is my issue. But idk for sure so any info could help me as well. I've noticed it likes to run better with trans temps around 150 or below. Can blister the rear tires from a 40mph roll with cool temps. When they get up around 160 or so can't even spin from a stop. Lets not talk bout building boost while braking. Might see 3lbs ?? Iam at a loss too

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94.5 Stroker · Jul 11, 2013

To me it sounds like you need a looser converter so you can build highdr rpms when you are getting ready to launch.

smoking stroker · Jul 11, 2013

Idk about the op but mine just started doing this recently. Went to ts had no issue building boost at the line.

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Mdub707 · Jul 11, 2013

Still no word on who's tuning is being used or if the correct tuning is even being used? No idea what ICP is?

Convert stall speeds will change as the truck makes more power too. So a 2200 stall converter on a 300hp truck is not a 2200 stall converter on a 500 or 600 hp truck...