Stall for PTE 6765

[Raymond Bunch]

What is the recommended stall for PTE 6765 turbo, journal bearing?

Last night I went to the local 1/8 mile drags and could only muster a 1.98-2.3 60 ft. Can't build boost off the line. Shifting through the gears, I still managed run 7.36 @100 and 7.7@99. on 18psi. My current stall is an 3000-3200. The engine is built 109 by Lou Czarnota.

Thanks.
Raymond

 

[Quik Six]

PTE chart recommends 3400-3500 for journal bearing with either cover.

My 6265S journal had a PTC NL 2850 stall convertor using Dusty's bump the needle test so it was a little tight. I took nearly 20% fuel out in spool phase, set the chip to delay fueling since I have alky system and also put some Royal Purple tranny fluid to raise the stall somewhat. It also made it shift smoother which was another plus.

I also had some leaks at the crossover/header connection but some Remflex gaskets fixed that.

I hope this helps.

Phil Engle

 

[L8TRH8R]

I've got the billet 6765 jb with a PTC 2800 first time ever running at a track went 7.39 @ 101.89 with a 1.94 60. Since it's a street Car this is what Cal recommended, for a car seeing more track duty he said 3200. If it's a billet wheel. How are ya? Still in Florida?

 

[Raymond Bunch]

Thank you for the quick replies guy's. I am leaning towards the PTC, just need to save up a few bones before committing to it. I have heard nothing but positives needless to say.

I'm no longer in Fl. I moved back to CA after my tour was completed at NAS Pensacola. Man,I sure miss the racing there. However,not the humidity or rain. Lol. That a very nice mph almost 102 is very impressive! Maybe I should leave mine alone, it has very good street manners as is. Hmmm.

 

[Mr.Spool]

converter sounds way to tight.loosen what you have or go to a ptc 9.5 nonlocker 3200.car did good up top but the 60ft really held you back.

 

[forcefed3.8's]

Alot of spool up problems are from being rich. I could spool up a 7668 JB with a 3000 stall, 60's in the 1.4's no problem.
A friend of mine is running a 6765 with a 10" 2800 stall from Brian H. The converter is wrong for the power the car is making, slipping like crazy at the big end, but spools awesome. The car went high 6's@102 1/8, and 10.7's@124 1/4.

 

[Quik Six]

converter sounds way to tight.loosen what you have or go to a ptc 9.5 nonlocker 3200.car did good up top but the 60ft really held you back.

Totally agree it's too tight at 2800. I'm doing lots of tricks to get my PTC NL to spool to suit me with a 6265S and I'm not satisfied to be in the low 1.50's for 60".

I recommend that the OP should contact Dusty, supply him with the information he requests and the OP will be very happy with the results.

I never wanted a roll bar or a NL convertor but couldn't be happier that I have them both.

Phil Engle

 

[bison]

If you want to have really good response and have a way to adjust the ramp in fueling and timing I'd go with at least a 3400 stall. If you have no adjustability you would need even more. For the power level you are currently running a 6262 would have suited much better.

 

[SGRIM]

3200 PTC if the rest of your combo is right...

 

[Raymond Bunch]

Alot of spool up problems are from being rich. I could spool up a 7668 JB with a 3000 stall, 60's in the 1.4's no problem.
A friend of mine is running a 6765 with a 10" 2800 stall from Brian H. The converter is wrong for the power the car is making, slipping like crazy at the big end, but spools awesome. The car went high 6's@102 1/8, and 10.7's@124 1/4.

Thanks. I think I'll do a little more tuning and try to get the 60ft down by taking fuel out in 1-2 gear only. I would like to keep it where it's at for now. Worse case, ill get my current stall, re-stalled to 3400-3500 and see how that goes. Thank you all for the advice. Like you already know, every combo is different. I'll eventually figure out what works best.

 

[bison]

Spooling in the line or off a t-brake will be a lot easier than a flat punch on the street or from a roll. If drag racing was the only concern you could get a 6765 to spool on a tight PTC 9.5" that only goes to 2800 at zero boost/vacuum but on the street it would suck

 

[forcefed3.8's]

He was talking about getting the car to build boost at the line and 60'. He never said he wants more response around town. Even then, clean the bottom end fuel up, the car will drive better around town. The 2800 stall in my friends car with the 6765 was making 5psi boost at light throttle pulling out of my driveway. I was very surprised with the response of the turbo.
Maybe get some logs with a wideband, see where the AFR is at during spool up, and get ahold of your chip maker and have the chip adjusted. Every car is different, and the chips are just a guess.

When I was running a GEN 2 translator, I removed alot of fuel in the spool up rpm range. It was going to 11.1 as soon as I put my foot in it. I leaned it out to 12.7, and the car drove totally different. The next year with the only difference being a set of ATR headers, and a 65mm TB (over a 62), on the base setting the car was at 16.5 spooling up, I had to add fuel. A wideband tells the story. Leaner AFR's and higher timing make more power which will allow the converter to flash higher under 0 boost.

 

[king kong]

Have you had your car on the dyno yet? make sure the combo is right....3000 stall worked beautiful for my old WH1....565 hp and 600 lbs of G-Force