Forcefed86

iTrader: (4)

Looking for some data with similar converter setups. Especially converters with 14-17 stator range.

Last year I ran:
Dished piston 8.6:1 LM7 with a LS9 cam.
Small S475 t4 1.10AR.
3.10 gear, 28x10” tire, 1.76 glide w/ brake
2850 race weight.
PTC 9.5” “custom” 3400 stall converter. With the 17 blade stator (17-0-52).

Managed 1.3x 60’s and an 8.93 @ 153 with less than 6% slippage up top. Problem is I had to launch the thing at 24lbs to net a 1.3x 60’! Without the 2-step on the TB this thing will rev past 5200rpm! It’s just not coupling down low. PTC is suggesting I try a 15 blade stator. (Another suggested I jump straight to a 14)

Trying to decide if I want to mess with this 9.5” anymore or jump right into a 10” that is more suited to my combo. Another I know with a 6.0 and the same PTC converter is on his third restall from PTC and still having similar issues. Started with a 17 stator, then 16, and now a 15.5. Still doesn't couple well down low.

turbo'd stang

PTC is usually pretty good about getting stuff right.

Did you maybe change the gears or something after you ordered this converter? With a 17 blade and 3.1 rear gear, that will never work. I'm surprised it didn't cook your fluid.
I've use their 14 blade in mine and it comes up real good with a 347/LF98mm.
I would think you could go even tighter than a 14.

Forcefed86

iTrader: (4)

Dusty spec'd this converter specifically for the setup above. Same gearing etc. I've actually since moved to a 3.25 gear. Didn't make much difference. I told him I wasn't going to be reving it over 6500 and that I wanted it to couple early. From what people are telling me now, I think it's odd he went with a 17 as well. Also don't see why they went with a 9.5 over a standard 10" on a low RPM setup.

I've heard others say the exact same thing you are about the stator. Fluid doesn't ever get over 220*ish. I do run a large T-cooler and fan. I don't hot lap the car either.

Anyone know what stator the YANK 10" eliminator series converters use?

turboventura

I'm no converter expert but I just put in a PTC 10" in my car last night, not the $400 street converter but the $900 (Toyota core I think) with a ported 8in stator. I spoke with Tim who originally suggested a 9.5, but later called back and said after discussing it with his boss that at my altitude (rocky mountains) that the 9.5 would be too tight and be hard to spool, that the 10 would spool better and not couple as good as the 9.5 on the big end but still be single digits. I don't think you can expect an 800+HP turbo car to stall up to full boost on the transbrake and just sit at 4000rpm's. %6 on the big end is really good. What's your two step set at now?

turboventura

Also what fluid are you running? Might try the normal viscosity JD hygard before pulling the converter. My experience with going from normal fluid to hygard was it lowered the stall down low and coupled a little better in the mid ranges but didn't effect total slip, this was on a cheap redneck converter that I was getting %34 slip in the 1/4.

Forcefed86

iTrader: (4)

I don't want the car to stall up anywhere near full boost. I'd like to launch it off 3-4psi on the foot brake and have the power com hard and fast earlier. Unlike my current converter which drags *** down low and couples hard uptop. Similar to stock48s setup for example. But all the cars I know running the 10" Yanks are using 6.0's. I'm a little worried I won't be able to "come up on boost" at the line with it.

I do run standard visc. Hygard in it.

turboventura

Okay maybe I misunderstood, what does it stall to on the footbrake now and what are you wanting it to stall to?

rotary1307cc

iTrader: (5)

Told him the same. I run a 14 aswell

I think he could get away with a 12 too, low rpm and fast spooling combo

Forcefed86

iTrader: (4)

Ultimately I’d like to avoid the trans brake and have it stall at 3400ish. Then set the 2step and leave around 5lbs with the converter coupling hard down low.

Currently on the trans brake without the 2-step it will rev past 5k if I let it once boost comes in. My 2-step is set at 3550 now. Generally I pre-stage on the foot brake to 1lb or so, jump on the Tbrake, and launch at whatever boost it happens to be at when the light turns green. This nets me mid 1.4x 60’s pretty consistently at around 9-10lbs and I can still cut a good light.

Ignoring the lights and building boost on the line, I launched it on the t-brake with the 2-step right around 12-14lbs and 3800rpm. (after 9lbs it builds boost so fast it’s hard be consistent) This is what netted my best of 1.40 60’ this year. Which seems like crap for a 2850lb car with 29x12slicks when Stock48’s 3400lb nova pulls low 1.3x 60’s at 2-3lb foot brake launch.

samdogmx

iTrader: (14)

I love mine. I have no idea what stators are in it though. Just told them what I wanted and ran what they sent me.

I stage, push TB button, floor it, 2step at 3800 let go when the light turns green, I leave off only about 5-6 psi, and RPMs almost instantly go to 52-5800 depending on how much boost I have it set at. On a good track mine usually 60s mid to upper 1.2s 1.24 is my best

rotary1307cc

iTrader: (5)

What is the number on the box?

samdogmx

iTrader: (14)

I just PMed the OP but here is the box

rotary1307cc

iTrader: (5)

Its a 15-0 stator

RonSSNova

iTrader: (3)

First of all, we know Stock 48 cheats somehow.....

Seriously though, eventually that's how I'd like my car to work.
I really don't want a trans brake.

So I'm really interested in the conversation.

Ron

stock48

iTrader: (17)

Im interested in these converters as well. My new engine, and turbo combo is going to be a bit more radical than the current settup and once I get into altitude it might need more converter. I love my Yank converters and the way they drive around.Both the 3000, and 3400 have been 1.34 off the foot brake, and car can't handle a transbrake launch over 3200 rpm on the tracks that I run on. Only problem with the Yanks is they are tight down low, and if you are low on tq, or have a big turbo they can be a little tight while spooling up. That being said I still was able to foot brake the car into the mid high 1.3 60's in denvers 9000' Da but car was a little tricky on a pro tree without a bump box. The 5.3L at sealevel will still have more tq than a 6.0L up at altitude.

stock48

iTrader: (17)

turboventura

Stock48, are you going to make the kbpi car show at bandimere august 24? They didn't tech last year and I hope to get a 9.xx 14x pass on. I just hit my 10" PTC for the first time, got a good 2nd gear pull in on 16lbs but now the head gasket is pushing water. Going to change them out next week. I'll post back with slip% and how it comes out of the hole.

stock48

iTrader: (17)

No I doubt it, Im going to be getting ready for drag week around that time. Let me know how you do. My yank is a 10.5'' converter.

Tomhames

iTrader: (3)

Any recommendations on where to buy from?
Or is it best to purchase direct since its a custom order?

DBRODS

iTrader: (1)

I went through 11 different converters when I had the 80E. I ended up with a PT3600MD Yank and it worked very well up to 26psi, after that it was blowing through it. I made the switch to a PTC glide and 9.5" 13-45* and its the best converter thats ever been in the truck.