ok so i had the car tuned and numbers were not what i was thinking they should be.so i made a post of the turboforums and people say it sounded like i had a really loose convertor.so i called PTC cause they built it.anyways they had me ship it to them and tighten it up my question is how much will it change either my times or hp.some people say its a real big deal if you have a loose convertor and i have also read it wont change much...i just hope it was worth all the rolling around on the ground i had to do to get it back out.


anyone ever have a loose convertor and then had it tightened up what kind of changes did it make? was it worth it

 

How much rpm drop in between the gears where you getting?

A loose converter will have little drop as its slipping and not coupling. Kind of like 1 rpm all the way down the track.

A tight converter will kill the spoolup but couple hard. Both are extreme scenarios and i've dealt with both. Car was faster with the loose converter.

 

from gear to gear WOT its drops about 200rpm....the spool up is a issue that im having it seems like a N/A car when you first hit it...with the 3.73 i was running out of gear 2 cars before the 1000 now with the 3.27 im getting threw the traps but top speed at 6200 rpm is still 130 with both gears

i called ptc and they are got to tighten it up and they told me from the sound of it that its real loose and it should be alot quicker with the tighter convertor

 

ditto!! but mine was nos sb!

 

weird that both of you went faster with loose convertor.ptc said it would pick up a good amount

 

The reason is the car gets on the pipe faster with a looser converter.

I mean.. let me clarify.. the car will go fastest with the correctly matched TQ converter. Now if you had the same car with both opposites.. one converter tooo tight and one loose.. the loose one will et better. As the tight converter will lug down the motor longer.

Change turbo.. guess what.. need to restall converter. On my car the converter was tight on the 76. On this 88 its starting to come around. As it was designed for an application that made 1400 HP. The more power I make, the looser it gets. make sense?

 

yea i understand that.i just was lost at first with both of you saying it went faster with the loose convertor but i get it now.....i will find out soon when i get it back

 

I had a stall was too tight on the gas,had it loosened up and the car picked up 2 tenths and 2mph.

 

so if its to loose it wont be right and to tight it wont be right.lol so i hope ptc gets it right this time.they told me it made more power then what it was setup for and was pushing threw the convertor so maybe this time around it will make the numbers i wanted and run the time i was thinking it should run

 

Dyno's are for tuning, the track tells you HP...