View Full Version : turbo

08-02-2009, 02:02 AM
so i found a turbo on a an 87 supra i guess its a single entry ct26 and the good part is i only paid 35 bucks the bad thing is i dont know what to do with it, i pulled it my self off the car today

08-02-2009, 02:18 AM
use it?

Or sell it to me for $40

08-02-2009, 03:02 AM
i think im going to send it off and have it rebuilt then use it

08-02-2009, 05:51 AM
You'd of been better off with the twin entry turbo. Single entry turbo is prone to keep breaking due to shitty design (single vs. twin entry). It'd work if you weren't trying to get high boost levels outta it.

08-02-2009, 02:07 PM
it was only 35 bucks so i took it and if i do use it i wont go more then 8 or 9 pounds of boost

08-02-2009, 02:48 PM
the supra '26 is a bad idea on a 5s.
the single scroll design makes for sloow spool, with the same power as a twin entry on a 5s.

08-02-2009, 03:18 PM
is there any type of rebuild that will help with the slow spool and shitty design

08-02-2009, 03:43 PM
sell the single scroll, and buy a twin entry from celica or mr2.

08-02-2009, 03:51 PM
The single entry makes slightly more power than the dual entry, but takes slightly longer to spool. Will work fine with the 5S. Safe to 14psi

08-02-2009, 05:16 PM
The single entry makes slightly more power than the dual entry, but takes slightly longer to spool. Will work fine with the 5S. Safe to 14psi
i disagree.
i have the dynos to show the slow spool on a 5s VS a twin entry.
and ive ridden in the car and have felt the diffrence.
on a 5s, twin entry '26 FTW every time VS the single.

here is itchyb's car from back in the day, with the single entry '26..spools ~4500rpm, and thats being generous.

and mine from back in the day:
pretty clear which spools faster, and thats with a 46trim compressor wheel, which actually slows spool on the twin entry by a couple hundred RPM.

08-02-2009, 09:39 PM
not trying to go against you but to different motors even thought they may look the same can put out to different sets of numbers on a dyno, unless the same engine was used around the same and ran at the the same dyno then there is to many differences in the runs to say one was better then the other

08-03-2009, 12:32 AM
his car is a 96 celica GT, mine is a 94 celica GT, with 98 motor.
they both ran an SAFC for tuning.
both on dynojet dynos.
its about as compareable as you can get, without swaping the parts on the same car.
everything about the setups mechanicly was virtually the same, same style intercooler piping and ic, same size injectors, ect.
nothing in the diffrences between the 2 would account for the 1000+rpm diffrence in spool that is clearly visable.

08-03-2009, 12:59 AM
2 different dynos on 2 different days with 2 different ambient settings.
yes single entry = slower boost
yes single entry = more top end power
single entry supra>single entry celica
either will work just fine on a 5sfte setup depending on the exhaust manifold setup.

08-03-2009, 05:38 AM
Strange, I can't figure out how he managed that... I used a 57 trim modded supra ct26 for quite a while, spooled a touch under 3k, with 10% less displacement.

08-03-2009, 01:37 PM
not saying the single entry wont work, just that the twin is a much better choice on a 5s.
you guys can speculate all you want, i know from experience.

08-03-2009, 03:43 PM
as do i, just not on a 5s, shouldn't matter. not trying to start a pissing match.