Converter bad?? **(More money=more problems...LOL)**

So I've been fighting my junk all year and it just gets worse!! Bought a new trans specialties spragless converter and had the tranny gone through. Got everything together and running and when I take the chip outta the 3 step to check the converter it promptly goes to 5000 then immediately the motors pulls down to 4500 ish and it feels like someone tied an anchor to the flex plate.

Fast forward to today at the track and the car tries to leave but immediately pulls the motor down to 4000. Motor wont rev past 4000 until about 150 foot out and then it's on like doney kong. But the motor doesn't pull very good IMO. With the old tranny and converter that I was blowing thru car ran a best of 6.21 @ 112. Now the car wouldn't fall out of a tree if I pushed it Any ideas to what the hell is going on. Everybody here that I know and that has watched the car says converter.....but geeez this thing s brand friggin new. Was also suppose to stall 5600 but it won't even get close.

Here's a video of what's going on. This is the second converter, this one's an 8" deal vs. the original 9" they sent me. What is going on. It's not the motor, been through everything at least three times. I had no problems until this converter deal. Is the spragless deal pulling the motor back?

Getting enough fuel to the carb?

bosshoss wrote:Getting enough fuel to the carb?

I've got fuel pressure. And to be honest I'm questioning just about everything now. Last two passes the car still wouldn't leave and as it goes thru the rpm range it definitely has a miss!!!!

back up and regroup.pull the valve covers and make sure it's all in order before you get to worked up.you cant know what the converter is doing if the motor aint at its best.you converter could have broke,it would'nt be the first time.when you get the motor sorted out if it still dont stall close to where it should yank that bitch and have it checked out.if it's a good brand they'll back it up if its broke but most just say "we could'nt see anything wrong" but after you put it back in it'll work.keep us posted!

cool40 wrote:back up and regroup.pull the valve covers and make sure it's all in order before you get to worked up.you cant know what the converter is doing if the motor aint at its best.you converter could have broke,it would'nt be the first time.when you get the motor sorted out if it still dont stall close to where it should yank that bitch and have it checked out.if it's a good brand they'll back it up if its broke but most just say "we could'nt see anything wrong" but after you put it back in it'll work.keep us posted!

Checking everything out is the plan for tomorrow. Fuel system, valve springs, etc etc.

let us know what you find,maybe no motor problems.lol.i think the converter is the worst thing to deal with in a race car!

richter69 wrote:I guess I'm not used to having all the converter issues that seem to float around here, I rekon I picked the right builder......or I'm just lucky??????

I guess I have been lucky also, about 50 times on different builds and customers.

I will say that the only changes in our personal converters has been purely for testing purposes looking for that last little bit. we are going to loosen our current one up about 500 rpm this time around just so it doesn't drop 1700rpm on the shift. these turbo deals are a little different than the NA stuff.

richter69 wrote:cant imagine an engine tune issue make it fall back after the initial stall like that.................sounds like the converter is off too me.

I guess I'm not used to having all the converter issues that seem to float around here, I rekon I picked the right builder......or I'm just lucky??????

yea.....................

Fuel pump's good, valve train is in tact and nothing else seems wrong!!!!

Is the pump flowing what it should? What about the ignition stuff? Battery good? It sounds crazy but I've seen a marginal battery loose enough while on the brake to cause the ignition to act up. Once off the brake and the voltage comes back all seemed fine.

jbozzelle wrote:Is the pump flowing what it should? What about the ignition stuff? Battery good? It sounds crazy but I've seen a marginal battery loose enough while on the brake to cause the ignition to act up. Once off the brake and the voltage comes back all seemed fine.

Pump is good, tried two different ignition boxes and same thing so i've eliminated that. Battery was tested good....could the alternator make something like this happen?

I would make sure the battery has enough "oomph" while it's on the brake under normal racing conditions. Pumps running, etc...

Find someone that will loan you a converter and try that. this is one reason I have a spare.

Ace

Trans specialties is sending me an 8" converter rather than the 9" they originally sold me. The 9" was almost already at full loose so this 8" deal should do the trick. I just wish they would have sent me the right one the first frigging time!!