Does anyone know how the comp ct4 jb 6262 turbo compare to a jb precision 6262? Both in T3 exhaust housing .82ar. Comp doesn't seem to be as popular as pte turbos so I didn't see any direct comparisons on the two.

 

I would probably run a Comp journal over a PTE journal but I would rather run a PTE ball bearing over a Comp ball bearing. If you are interested in only the two companies and only journal I would go with the Comp.

 

Thanks brother! I saw a remanufactured comp ct4 jb 6262 for like 550 bucks and I thought it was a good deal!
Do you know If these flow as well as the pte turbos? I believe the ct4 is rated at 710hp according to Comp.

 

Don't run a PTE JB anything. Just ask Maxwellmercer about why; along with numerous other accounts of failed JB units right out the box from them. AZ has it on point, PTE shines on their BB units but JB, go with Comp or ANYONE else.

 

Thanks! I guess I really haven't seen many pte jb builds now that I think of it 🤔

 

The PTE BB units flow better and spool faster than the Comp stuff. now I've heard the PTE 6262 is good for somewhere around that power as well but again if it is between the two you mentioned I would go with the Comp.

I also had a lot of good luck with Garrett Journal Bearing turbos and I've heard that the Borg is very good as well. I would choose these either of these for longevity, for power it would be PTE BB turbos all day especially if it is more geared to race only.

 

Agreed here as well. I'm currently running a GTW3476 JB and it is pretty sweet for journal.

 

Most Garrett stuff is over 1000 bucks. BW seems to be priced a little better but most of the stuff I've found is in a t4 exhaust housing. Which I'd like to stick to T3, if possible. I'm having a hard time finding the lb/min flow rate on the ct4 comp 6262.

 

What kind of power are you putting down with that GTW3476?

I'm running a cx racing bb gt3582r but currently I'm looking for a little more power. My car put down 521whp @20psi. I believe it has more in it but a few tuners think otherwise.

 

I ran a Garrett t3t61 with stage 5 wheel and put down 715whp with it.

It was like 850 brand new. My car put down a 9.9 pass with it.

 

I haven't put it on a dyno yet but I would estimate between 390 and 410whp @24 psi. I've JUST barely touched its efficiency range, the map says it should give much more!

 

what engine and at how many lbs if boost? I'm looking for something to get me to 640ish whp. This might be the ticket!
K24 block 10.2 to 1 compression pistons and k20a2 head.

 

Nice!

 

I don't see why my current setup couldn't put down 600whp at maybe 25ish psi and E85.. Thoughts?

 

That CX turbo may be running out of breath at this point. What's the rest of your setup?

 

B-series but the guy I sold it to had a K and close to the same power.

 

K24 block with 10.2 to 1 wiseco pistons
-k20a2 head with bc springs and retainers
-cxracing turbo kit with a cxracing GT35r ball bearing turbo.
-deatschwerks 1300cc injectors
-340lph fuel pump
-6an feed and return
-kpro v3

If you look at it my dyno graph it never dropped at any point, it just kept rising in power so based on that I don't see how the turbo is running out of breath. I have a walbro 450lph pump on the way, hoping to get tuned on e85.

 

Seems like that's out of the efficiency range of that turbo but hey numbers don't lie.

 

Turbo running out of steam was just a tossed out guess. Lol! It may have more to give, I dunno. I remember CX wasn't very helpful with many of the tech questions I had for em. Lol!

 

They aren't going to be helpful, man. They do knock-off GT35Rs, there's no tech to be given.

 

Dynapack numbers ?

 

I agree. I bought the car with the turbo kit. That's part of the reason I want to upgrade the turbo to something decent with a little more potential.

 

You can also still get a Borg Warner S360 SX3 from Full-Race with a T4 single scroll housing for $732 ($882 with V-band downpipe connection). This is the non-billet (cast) version but is still rated at 72 lb/min which should still net you 640 whp on E85 on a K-series.

https://www.full-race.com/store/borg...x-83-75-turbo/

Alternatively turn the current CX GT35 up to 25 psi and try. Your dyno graph looks good. Increase the boost in 1-2 psi increments and WHEN you see the turbo stop making additional power STOP. In the interest of Chinese copy cast compressor wheels and bearing assemblies don't make it work harder than it wants too.

With the BW - the more boost you give it, the happier it will be :-)

 

Thanks brother! I'm trying to get a decent turbo for under 1000 so this might work. I could probably get a used pte 6262 for 1000 or less but you never know who you're buying from. I initially asked the comparison between the pte and the comp because I had a buddy selling a remanufactured comp 6262 for 500 bucks but I wasn't sure how it performed compared to the pte 6262.

 

Also, why not a s362 in 62mm vs the 60mm? Wouldn't that compare closer to a 6262? I'm looking for a T3 housing as well.