Dragaholic

iTrader: (180)

Just wondering if you could spray this converter and if so, what size shot? Ive already decided on this converter, just wanted to know the answer to this question that way I can make up my mind about what gear to choose. Thanks.

SLP_02_SS

I asked my tuner the same question. he said if i was going for a big shot get teh PT4000 instead, he said the PT4400 is more for all motor. If i do get the PT4400 i would probably go with a small shot just to conpliment it, say less than 100

Colonel

You can, but you would see ALOT more benefit from your nitrous with a tighter converter.

FWIW, I used to spray a 125 shot on a TP4600 (internally stock engine.) I ran 11.56 on motor and 10.84 on the gas. With a tighter converter I'm pretty sure I could have run 10.5s.

Dragaholic

iTrader: (180)

Colonel: Wow, those are nice times. What gear and tire were you running with that setup? I didnt think you could go that big of a shot especially with a PT4600! So then with the PT4400, a 100 shot is easily doable? Lastly, I currently have the C2 cam, but plan to go a lot bigger, will this limit me from spraying or the size of the shot? Reason I ask, is that you did this internally stock.

Jorday

I have the PT4200 and I spray 100 hp once in a while. It works ok, but a smaller converter would probably give better results.

Colonel

The higher RPM capabilities of the larger cam will only help the converter's ability to work on the spray. It's NOT a strength issue, it's a shift extension issue (and your shift extension will be increased when on the bottle.) Too much shift extension will have negative effects on ETs. With a large cam you will have a lower shift extension relative to the RPM capability of the cam. Notice I didn't say that you would have a lower SE. I said it would be lower in relation to the RPM capability of the cam. A single stage of nitrous moves your powerband downward. See, you gain 100 HP from a 100 shot right when you spray it no matter what your RPM is. So, percentagewise your HP increase is more at lower RPMs than it is at higher RPMs. This means that you'll want to shift a little earlier, cross the finish line at a little lower RPM, and have a lower shift extension than when running NA.

I know it's alot to soak in but trust me, the thing will work fine with nitrous. It just won't go as quick as it would with a tighter converter.

Dragaholic

iTrader: (180)

Well I havent decided just yet on which cam to use, but the T-rex and G5X-2 are looking good right now. I am going to wait it out a little while and see if something "better" comes out that is going to put down the numbers. Either way, its going to be "bigger" than the C2 that I have. As mentioned before, I am already set on the PT4400 just because its an all out race converter. I figured since it was superior for all motor, I thought that it wouldnt work with spray. In most cases, you cant have best of both worlds. I want to see how far I can go with cam only, then later on throw on a set of heads. I first have to work on what Im going for now which is cam only. Right now my main changes that I want to make are: rear end with a different gear, converter, cam, and lighten up the car. What gear will work great with or without spray with the PT4400? (obviously an increase in tire size will be needed when spraying) By the way, Yank has converters specifically made for nitrous applications, does spraying their race converter (PT series) have any negative affect? I dont want to damgage the converter if its not made for nitrous. Thanks

F1_SS

It loves the spray

Colonel

"does spraying their race converter (PT series) have any negative affect? I dont want to damgage the converter if its not made for nitrous. Thank"

I just answered this in my last post. Re-read it.

Dragaholic

iTrader: (180)

Whats the STR on the PT4400? I know the SS4000 that I have has a 2.6. Also, does the PT4400 have a much higher shift extension than the SS4000? If so, is that better?

Colonel

I've detailed the shift extension differences of the different Yank lines to you before. Do a search for your own threads concerning converters.

The STRs are listed right there on Yank's website.

Dragaholic

iTrader: (180)

The PT series actually has a lower STR...I figured it would have a higher STR. I figured since it was a race converter, that it would have a harder hit off the line. The PT series does have a little better efficiency, but not by much. It also looks like it weighs more than the SS series. Theres a lot of other things that it covers, but didnt mention shift extension.

Colonel

The STR depends on the stall speed of the PT converter. A PT4400 with an STR of 2.50 hits plenty hard. It also has tremendous TQ extension. It pulls long and hard well after the line.

I'm not sure but I think that the PT line may have been updated to the lighter design. It's only 2 lbs or so.

MUSTANGEATER

iTrader: (10)

You can spray any converter some will work better than others. If you only want to use Nitrous once in a while you can get away with the PT4400, but you're probably going to spray right through your powerband.

If you're looking for max performance with Nitrous I'd look at something like the PYE3600.


What I'm really wondering is how something like a SS4000 would do on the bottle? I'm betting its a little loose but I can't help but wonder.