Goerend ???

[SOOT4BRAINS]

Ok, my friend just got a new goerend TC. The $950 one, supposed to be the tightest and best one. Got it installed today. It is really grabby. Loads motor at much lower rpm now. Spool up has gone down though. Just grabbing at such a low rpm that it takes a little longer to spool up. Some times after you get on it hard and it comes back to idle, the motor chugs really bad. Rpm is at 750ish in gear. Rpm does not appear to drop, just kinda surges or chugs. Can the motor load up with fuel and cause combustion to be difficult at idle right after a hard pull? As soon as you give it some throttle to accelerate again, it goes away. (its a 3 month old VE from industrial injection) Shift points are all out of whack, shifts at like 2100 to 2200 rpm. The kickdown is all the way back at full throttle. Also, egts at idle are WAY up. 550 degrees at idle in gear. drops down to 300 pretty quick as soon as you put it in nuetral. We are assuming this is just the grabby converter. He has w250, ddp3's, no afc, timing near the head and pump tweaked. Do torque converters have a break in time? Anybody else have this chugging? I only know manual transmissions (and thats very limited), this auto stuff is black magic....... Any help or suggestions are welcome. Thanks!!

[SNOOT]

What kind of lift pump he have that may explain his chugging after a hard run. He may be running that pump out of fuel..

[Richie O]

When I was browsing around for options I was worried that converter would be to tight. I would think that you would need a truck with a small turbo like a basic S300 and stock timing to keep the off idle power and quick spool up. I have not had the money yet for the purchase.

[SOOT4BRAINS]

he has piston lift pump, his pressure gauge is hosed, but I put mine in, and it did not drop below 5 psi on a hard pull. He also has a upgraded H1C turbo.

[JQmile]

Mine does it too. Never really thought much about it. I just put it in neutral for a second and rev it up to 1100 rpm for about 5 seconds and the chugging goes away. The good news is that converter should probably hold over 500 rwhp.

[SOOT4BRAINS]

His piston pump is acting a little wierd too. The pressure will fluctuate between 15 to 20 psi. Sometimes its 20 at idle and 15 at speed and sometimes its 15 at idle and 20 at speed. Maybe its drawing all the fuel out and takes a second to build it back up. As I understand, the piston pump should be making a more steady pressure. Don't see it ever drop below 5 psi (measured post filter), but I can't figure it out. Never did this until we picked it up from the tranny shop after the tc got put in. He likes the converter. It pulls really good now. Still shifts way early, but if you shift it manually and bring it up to 2800, it will plant you in the seat pretty good. JQmile what lift pump are you using? Thanks for the input guys!

[Ace]

His piston pump is acting a little wierd too. The pressure will fluctuate between 15 to 20 psi.

Tank vent might be plugged.

[peobryant]

Aaron, you get this figured out yet?

[SOOT4BRAINS]

We just got done putting a raptor fuel pump on it. I think when he gets his 6x.016 injectors, the piston pump would not be enough, so he decided to go with the raptor. His piston pump was pulsing past 20 psi, so I think there is something wrong with it. I am going to disassemble it and check it, it is possible the gauge is just messed up and reading high. Pulled the tank, checked the tank vent, seemed fine to me. We retarded the timing a little bit. It was at about an 1/8 advanced, so its about 1/16 now. No difference. I'm not going to mess with his timing till the bigger sticks get here. Then I'll help him tune the timing some more. And put his afc lever back in. Smoke is controllable, but if you accelerate any where near normal, it just smokes. I don't understand how a stock truck can be floored, and not smoke, but turned up it smokes a lot and your driving like a grandma..... He wants to get a 62/65/12 for it, I think a bigger turbo is just going to lag really bad. Once its spools it pulls good, just shifts early. Tv cable is all the way back at full throttle as well. Not sure what else to do about spool and smoke. It has not done the chugging since I test drove it the day he got it back. Just doesn't like me I guess... Thanks for any input.

[Crossy's son]

Well with stock injectors, a upgraded compressor on the turbo,

I would imagine it'd spool slow with a stock housing, evena 18.5cm it would spool slower because its loading it up so early,

What year is it? What size exh. housing?

sounds like he needs to put like a 12cm or 14cm housing on it so it'll spool.

The early shifting is most likely in the TV cable, it has to be in perfect adjustment and shops can never get it right it seems. its the cable that runs to the pump and as you give it throttle it moves the lever on the side of the trans (you can see it from the eng. bay). if that cable was out of wack or even say NOT THERE it wouldn't even shift, if its shifting early then it most likely needs to be adjusted back so when you push the pedal the throttle linkage doesn't move the cable as early..

[SOOT4BRAINS]

It has a 16 cm housing on it. I adjusted the tv cable after the shop said it was done. they r just lazy. I am trying to understand the tv cable operation on these. I have adjusted many many kickdown levers on old mopars. On the old cars, moving the lever at the tranny back further gives it more line pressure, thus prolonging the shift. Is that how these work? I have his adjusted so that at full throttle, the lever is all the way back. Dave from goerend said the early shifting kinda comes with the territory of a 90+% converter. He said the tranny thinks its shifting at the same time it used to, but rpm is lower because it shifts based on load, not engine rpm. I think when he gets a 62/65/12 on there, its gunna spool even slower. Another thing, his manifold to turbo gasket is leaking, so he is losing some drive pressure, this may be the root of the problem as well. On another note, the raptor pump works good, its kinda loud though. Much louder than my new airdog. However, I rubber mounted my airdog to cut down on noise. Can't hear it over the motor, so he don't care. Nice steady pressure. Will try to keep updated, I've been working like mad on my getrag/ clutch rebuild. Thanks!

[sdstriper]

The TV cable adjustment;

http://dens-site.net/Dodge_CTD/Kickdown_Adjustment/