Ball bearing T3/T04E turbo

[mock_glh]

Is anyone out there using one of the Garrett ball bearing T3/T04E "upgrade" turbos?
http://www.atpturbo.com/Merchant2/me...egory_Code=GTB

Are these compatible with our Chrysler turbine housings?

[Frank]

Wow that is pricey! I don't think our vendors even charge nearly that much to convert your current T3/T04E to a ball bearing.

[Mario]

Not interested in the GT series?

[mock_glh]

Not interested in the GT series?

I have a GT-3076 on a 2.5 with a Menegon head, big cam, 3" exhaust, big intercooler, and 72lb injectors, and the POS won't spool up until it hits 5000 rpm. Meanwhile, the 50 trim S2 hybrid on my car blows it away. I built this motor for a guy who can afford the best stuff and I'm almost embarrassed to deliver it for what I have to charge. The thing makes power but I have to spin it 7000 to use any of it.

[Will Martin]

I have one on my RT. It spools really quickly builds boost in first gear. I still have not tuned my RT yet but I love it. And I'm using a stage III wheel, there's no lag. I'm not sure about using it on a 8v head though.

On your Menegon 2.5 head, did you play with the timing at all?

[mock_glh]

I have one on my RT. It spools really quickly builds boost in first gear. I still have not tuned my RT yet but I love it. And I'm using a stage III wheel, there's no lag. I'm not sure about using it on a 8v head though.

On your Menegon 2.5 head, did you play with the timing at all?

I tried changing the timing (cam and ignition) and fuel every which way you could go with it and the only thing I could get was more lag, misfire, or detonation if it made any difference at all

[Ondonti]

Wow that is pricey! I don't think our vendors even charge nearly that much to convert your current T3/T04E to a ball bearing.

Well it comes with the turbine wheel + shaft ($200) backplate ($60) compressor wheel ($180) so its more like 500 dollars for the ball bearing section + assembly & balancing.

You can really claim thats a ripoff.

[turbovanman²]

I did some price shopping and there around $700 for a ball bearing setup, and yes, it will use the Dodge turbine housing. Gasketmaster also sells turbo's.

[Ondonti]

you need one because you never have surge issues

[Frank]

I tried changing the timing (cam and ignition) and fuel every which way you could go with it and the only thing I could get was more lag, misfire, or detonation if it made any difference at all

That is really odd dude. Are you able to datalog? You should post those up. There maybe something someone might spot that you didn't think off. Worth a shot.


Frank

[8valves]

I have a GT-3076 on a 2.5 with a Menegon head, big cam, 3" exhaust, big intercooler, and 72lb injectors, and the POS won't spool up until it hits 5000 rpm. Meanwhile, the 50 trim S2 hybrid on my car blows it away. I built this motor for a guy who can afford the best stuff and I'm almost embarrassed to deliver it for what I have to charge. The thing makes power but I have to spin it 7000 to use any of it.

Strange. I ran a 3076R on a 2.2 (+.020 for what it's worth) with a very ported head, and an S3 Taft cam. The car made under 100 WHP until 3K, but by 4K rpms I was over 400 and was at full tilt boost around 3900-4100 depending on the day. 72 lb injectors as well, on a Precision 750 core FMIC crossflow cooler, using a TU header and an external wastegate.

I'm not sure why you're having such spool issues...

What exhaust housing is it using? Mine was on a very ported .63AR housing to boot...

[mock_glh]

What exhaust housing is it using? Mine was on a very ported .63AR housing to boot...

It's on a ported stock manifold and has a .63 AR Chrysler housing, modified to fit but otherwise stock. The engine mods are not nearly as extensive as yours. Too bad I would rather hear "Stock?" than "Omigod" when I pop the hood.

[8valves]

It's on a ported stock manifold and has a .63 AR Chrysler housing, modified to fit but otherwise stock. The engine mods are not nearly as extensive as yours. Too bad I would rather hear "Stock?" than "Omigod" when I pop the hood.

That's fine too, but I don't really have much out of the ordinary that would make such a drastic difference between the two, except for the header. A ported stocker to a TU log header shouldn't be a 1000 rpm difference in spool.

When I ran a ported stock two piece on it, it acted the same way... slightly laggier, but 4200 was full tilt no problem. That was also when running a dual core TD intercooler, 2.25" IC pipes, and 52 pph injectors. Inside the engine was just a forged crank, T2 rods, Wiseco piston setup. Nothing crazy... and I bet even lower compression than what you're dealing with. My head has 60cc chambers.

Just trying to give you some reference info.

[johnl]

I have a GT-3076 on a 2.5 with a Menegon head, big cam, 3" exhaust, big intercooler, and 72lb injectors, and the POS won't spool up until it hits 5000 rpm. Meanwhile, the 50 trim S2 hybrid on my car blows it away. I built this motor for a guy who can afford the best stuff and I'm almost embarrassed to deliver it for what I have to charge. The thing makes power but I have to spin it 7000 to use any of it.

Maybe there's a boost leak?
Do you know someone who has one of those smoke testers?

[mock_glh]

Maybe there's a boost leak?

No way. Once this thing finally catches it'll go upwards of 30 lbs without the G-valve installed.

[mw6886]

Maybe the problem lies in the cal?

[Rattlesnake]

I had a GT3582R with a 63 turbine and I had full boost at 42-4500rpm. With the GT3071R 32-3600rpm. 2.5, FM Stage 4 head and Nascar boom pipe. Shelgame made me a cal and it got a lot better. Do your homework.

[Rattlesnake]

I still got the GT3071R. $800 takes it or better offer.

[moparzrule]

Not all ported manifolds are created equal! Doing my own R&D yielded some interesting results. The FM ported unit I lost 100 RPM spoolup on a 250 WHP setup compared to a stocker. Ported my own, gained 400 RPM over the FM unit.
What exhaust are you running? Anything restrictive? Cat, muffler? What size pipes?

[turbovanman²]

I still got the GT3071R. $800 takes it or better offer.

Wish you'd got back to me about that back when you first had it for sale, I'd have bought it,