PTE SC-63 info desired

[XakEp]

Been looking around, and I've been having problems finding people with these turbos on DSMs. Searching turns up less than nothing, so I'm wondering if anyone here has used one on their 2.3 or 2.4 DSM and what their impressions were. The one I picked up (really cheap too) is an S cover, .82 AR in a T4 housing. I really dont know a whole lot about it.

 

[Reese92tsi]

Yeah, the 63mm doesn't seem to be a very popular wheel with the dsm crowd. Wes hess ran this turbo a couple years ago with a .68 housing on his 1G AWD. He went 132mph in the 1/4 at just 22psi and 138mph at 26psi and he still had the stock intake manifold.

 

[XakEp]

Yeah, the 63mm doesn't seem to be a very popular wheel with the dsm crowd. Wes hess ran this turbo a couple years ago with a .68 housing on his 1G AWD. He went 132mph in the 1/4 at just 22psi and 138mph at 26psi and he still had the stock intake manifold.

Any ideas as to why its not popular? I'm about to mount mine on my car and it seems like a decent turbo.

 

[Reese92tsi]

To my knowledge the 63 isnt offered in a mitsu style housing like the 61 and the other wheels are so this could be why dsmers don't typically run it, but have no worries the 63 wont dissapoint. Where did you get yours from? How much?

 

[XakEp]

Got the turbo on and drove it around for a while.

1) Lag bad

2) Nitrous good

3) I am no longer scared of spiders. I'm scared of getting a ticket.

When we took the car out for a quick spin for the first time and I punched it in 2nd gear, the downpipe blew off. As in OFF. I'm gonna have to get that high flow cat gutted tomorrow I guess. Its moving alot of air. Yes, if youre going T4, get nitrous, you'll need it.

 

[JOEY A]

Damn! Wtf your down pipe blow off?!

Time for a 4inch exhaust

 

[XakEp]

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[Shearer]

You'd be better off with a 67mm, same lag as a 63 and will make more power.

 

[XakEp]

You'd be better off with a 67mm, same lag as a 63 and will make more power.

Seeing as its a PTE, I may well be making the swap soon without going out of pocket to do so.

 

[HighPsi91]

You'd be better off with a 67mm, same lag as a 63 and will make more power.

BAH! I havent seen too many 67's outperform my 63. I had full boost before 4500rpm on a 2.0 and went as high as 148mph on a nearly 3000lb car on spray and close to 140 without it. I felt it was a very good turbo. The 67mm has yet to perform up to the hype in my opinion.

 

[nanokpsi]

BAH! I havent seen too many 67's outperform my 63. I had full boost before 4500rpm on a 2.0 and went as high as 148mph on a nearly 3000lb car on spray and close to 140 without it. I felt it was a very good turbo. The 67mm has yet to perform up to the hype in my opinion.

There is no hype for the 67 to live up to. It's not like its an unproven turbo. It has the flow to get you to the 150s with out the spray

 

[JiggahMan]

BAH! I havent seen too many 67's outperform my 63. I had full boost before 4500rpm on a 2.0 and went as high as 148mph on a nearly 3000lb car on spray and close to 140 without it. I felt it was a very good turbo. The 67mm has yet to perform up to the hype in my opinion.

Shep used a 67 a few years ago. I suppose he made a bad decision.

 

[nanokpsi]

To Wes's point, the 63 is looked on pretty favorably in the Supra community. It slightly better than a 67 spool wise but just doen't provide the same level of power.

Call me crazy but I am assuming the 4500 rpm full boost was on the hose Wes

 

[Reese92tsi]

The 67 should outflow the 63 but its not going to happen around 30 psi, at this level IAT/charge density will be about the same and their isn't going to be much of a difference in power. The difference will be apparent once you get in the high 30s low 40s when the 63 runs out of flow and the 67 will keep flowing. If I had a choice I would choose the 67 over the 63. The compressor wheel is the lightest part of the rotating assembly so the small differences in wheel size shouldn't induce any extra lag providing the turbine wheel and housing is kept the same.

 

[HighPsi91]

As far as Shep using a 67mm I dont know how accurate that is... but regardless he is a bad data point. He has gone faster on any given turbo than anyone else in the same timeframe. His car has always been setup very well, obviously.

My full boost around 4500 was without spray by the way. Also 150's without spray? Who has done that? On average 141mph seems to be the best I've seen with a 67mm. Im sure had I concentrated on all boost power I could have shrunk my 2mph defecit some

As far as the 67mm being superior, I agree that it can support a bit more peak airflow than a 63 however there has a been a Supra that dynoed 700whp on a 63 and a handful in the mid to high 600's. If looking at Supras for an idea of peak HP potential the 67mm hasnt gone much past 700.

One thing that I can say (from actual in car DSM experience) the 63 had better midrange power than the 67. The 67mm cars did have a noticeable top end advantage, however I felt the power under the curve so to speak was better with the 63mm, which is why I went with it.

All I am saying is that the 67mm has become a popular choice but I have yet to see great results. It seems like alot of guys have upgraded from the 61mm "gt35r" sized turbos to the 67mm in search for that extra power and most guys were dissappointed.

The wheel itself has a poor inducer to major proportion if you ask me. The major dia is the same as a 63 in fact. It gets to a point where adding more inducer size wont help if major dia is held constant. Sure the wheel may have less rotational mass but remember a compressor wheel is a centrifugal pump. A larger major dia will acheive the same tip speed at a lower shaft speed than a smaller major. It seems that the 67mm is very sensitive to turbine selection. The right tubine choice seems to make all the difference on 67mm based turbos in my experience... likely due to the 67mms need for relatively high shafts speeds to really get the wheel to come alive.

Im not trying to tell everyone to run out and buy 63's I'm just stating my opinion of the 67mm. I just feel its overrated that is all.

 

[GVR4592]

I'm pretty sure Jake Montgomery has trapped over 145 without spray on his 67, but I agree that the 67mm wheel is pretty overrated. It gets the job done, but not as efficiently as other wheels can.

 

[GVR4592]

Wes, which turbine housing and wheel did you use in your 63mm turbo?

 

[HighPsi91]

I was using an on-center .63 A/R housing with a P-trim wheel. On-center housings are said to be pretty inefficient.. however it worked fairly well for me.

I know Jake is using a 67mm.. exactly what turbine he has I dont know. As I said earlier the right turbine selection seems to be super important with the 67mm. All the posts I have read of his has stated that he was using nitrous to help spool the turbo. Even using nitrous just to spool will help your trap speed some. Im not trying to take anything away from his accomplishments so dont misunderstand me. I'm just stating once again i'm not seeing any "magic" from the 67mm.

I think im burnt out on this subject now I stated my opinions. I havent even posted on Dsmtuners in quite a while, but this topic was something I had first hand experience with. Whatever turbo you end up going with.. the rest of the setup and details are more important anyway. If you get the rest of the package and tune right either turbo will run quite well.

 

[GVR4592]

Hey thanks for the info, the reason I asked is because I'm going to a larger turbo setup and the 63mm wheel was one of the wheels I was considering. I've heard a lot of good things about it on the Supra forums and as far as I know you are the only guy with a DSM that has used that setup. Thanks again.

 

[Kevin Jewer]

Even using nitrous just to spool will help your trap speed some.

Not that you need the help Wes, but just to help reinforce this statement I'll add a datapoint from my 2g a few years back. Running a T67 with a .82/O trim on a 2.3, NLTSing the 3-4 only (help 4th gear respool time, like the nitrous example) was worth 3 mph. I felt that was a huge gain. As I predicted, doing the same on the first two gear shifts dropped ETs nearly a full second (while not touching mph at all). On turbos this size using any tricks to help spool will certainly have measureable (and even substantial) effects on quarter mile performance.

 

[GVR4592]

Did I read that right? Just by using NLTS you gained 3 mph and dropped almost a full second from your ET's? That's impressive. I wonder if a ball bearing center section would've helped in between shifts even more. I noticed a slight improvement when I changed to ball bearing on my little SCM44. What was your mph with that setup Kevin?

 

[Kevin Jewer]

The T67 in that configuration didn't reach full boost until the high 4000s, nearly 5000, so I knew it would help a good amount, but I was pretty surprised still. I was running 126 mph at 27-28 psi. Unfortunately as I turned the boost up it became apparent in spectacular fashion that the 255 couldn't keep up. There is some info on the carnage and what I learned from it on this page. It still kills me to this day, I would have loved to keep turning the boost up, or at least get better than a 1.8 possibly nudging that 11.3 into the high 10s (that car typically 60 footed in the very low 1.6s with occassional high 1.5s), but alas, it was mid september and too late to go through all the trouble of rebuilding. Next thing I know it's parted out and running 12s on a 16g again