Stall converters for the 2J

[2JZR31]

Anyone got a larger stall on there 2J? I know that the MV2800 stall for the 1J is awesome and can be stalled up to like 4000rpm under boost. But this is a different convector to the 2800 MV 2J unit. I would like to know how far the MV 2800 converter can be stalled to for the 2J. Or any other info on 2J converters.

[chris davey]

Probably best to ring Mike for that info. I would have thought. Each setup will vary but I think he would know someone running one with a gt35 2jz.

[2JZR31]

His info is sort of conflicting. He reckons it will only got to about 2800-3000. Yet his 1J 2800 is known to go to like 4000. He also reckons that anything over a 2800 is way to big for a T04Z, and it seems most people with GT35's and that in VL's are using converters that are much higher than that. This is why I would like to here from people actually running the converter.

[chris davey]

The guy who owns the 2jz merc has one. Don't know if he is racing tomorrow?

The thing with turbo converters as you know is that the advertised stall is usually different to the brake stall. I think they rate them on the flash rpm which can differ to the brake stall. I suppose that is why a 2800 stall (which AFAIK is as high as possible without using pajero housings) can actually stall to anywhere from 2800 to 4000rpm. I know sbyder had a 2800 stall (1j) and actually got to 3300rpm. Jampac's going to 4000rpm is just because he has so much boost (and torque) down low. If he had a t04z or something like that on it, I doubt it would go anywhere near 4000rpm. In fact, if I had that exact same converter in my car with the old diff gears and turbo I don't think it would even get to 2800rpm.

You said you make 1 bar at 3500rpm right? If that is first gear then I don't think you will have a problem stalling to 3500rpm with the "2800 2jz" stall that is provided that they are similar to how the 1jz one has worked on people's cars.

I think people choose higher converter just for safety sake e.g. I had a stocker and wanted boost, could have went for a 3400rpm but decided to go for a 4000 just in case. They say the flash rpm should be where you make 5psi at.

HTH, maybe just waffle

[2JZR31]

That's the thing. The am fairly certain that the MV 1J converter is not the same as the 2J one so all the comparos are probably not worth much. The 2J is a bigger unit so will stall less.

It makes 1 bar just over 3500 in high gears and like 10psi by 3000 (something like that). So it should be fairly "on the converter" at 3000. I was just wondering if the 2J does the same thing as the 1J unit by actually going heaps higher than its rated stall providing you have some boost there.

[Norbie]

It's called a "high-stall torque converter", there is no "stall converter".

/off topic

[jampac]

I actually saw on my 3rd run on wednesday, 4600rpm and 1.6kg/cm2 of boost on the stall converter. It took me by surprise as I was waiting for the lights, had a slow stager next to me. This stall up produced so much torque that the car actually slipped over the staging line with both the footbrake and handbrake fully on.

[2JZR31]

It's called a "high-stall torque converter", there is no "stall converter".

/off topic

And a BOV is called a compressor bypass valve. But I couldn't be fucked typing all that out either

[2JZR31]

I actually saw on my 3rd run on wednesday, 4600rpm and 1.6kg/cm2 of boost on the stall converter. It took me by surprise as I was waiting for the lights, had a slow stager next to me. This stall up produced so much torque that the car actually slipped over the staging line with both the footbrake and handbrake fully on.

With my stock turbos. I was getting 10psi at 2000rpm and my rear brakes would not hold, and the rear tires were sticky so it skidded my front wheels over the line. Is that what happened to you?

I will need some better rear brakes.

[Norbie]

I will need some better rear brakes.

Probably won't help much - what you need is a transbrake when that happens.

[jampac]

With my stock turbos. I was getting 10psi at 2000rpm and my rear brakes would not hold, and the rear tires were sticky so it skidded my front wheels over the line. Is that what happened to you?

I will need some better rear brakes.

Kind of, didn't skid, just brakes couldn't hold it. I have the big supra brakes up front as well.

[jampac]

Probably won't help much - what you need is a transbrake when that happens.

Yes transbrake is the solution but a340e can't be transbraked.

[2JZR31]

Transbrake is ideal. But good rear brakes make a huge difference, specially if you have really shit ones like me. (IE cant even do handbrake skids)

[BMWTurbo]

My STD 2J convertor stalls to over 2500rpm... You saw this Denis

[2JZR31]

Yeah. That was really odd. Everyone I have see or otherwise heard of only goes to around 2000. I would be running like 11.7 if mine done that.