Two different turbo options!
#1
Two different turbo options!
I have a T25 off a CA18 silvia and i have a stocker off a TT Supra......just wondering which would be more effecient to put on the miata. thay are both stock off turbo cars, but the CA18 turbo IS off a 1.8 while the Supra turbo is off that big ol' 3.0, iregardless of the fact that it only runs off 3 of the pistons
#2
You've gotta give us the specs on the turbo's. Look on the turbine housing and tell us the A/R's. I think the CA18det T25 is a .48/.49 and start making boost before 2000rpms and are at full boost by 3500rpms. They'lll support up to about 230hp with full engine management.
I have no idea what the Toyota is, but it's probably some funky KKK KO3 or another application specific unit.
A better question, since the turbo is essentially the cheap part of the build if you're buying used, is what manifold and DP are you using. The CA18det T25 uses a standard T2 turbine inlet/outlet and you can find a mani/dp everywhere. I can almost guarantee you that the Supra turbo is some funky flange on both ends of the turbine and you're gonna have to have something custom made to get it to fit.
Post some specs and some pics and we can help more.
I have no idea what the Toyota is, but it's probably some funky KKK KO3 or another application specific unit.
A better question, since the turbo is essentially the cheap part of the build if you're buying used, is what manifold and DP are you using. The CA18det T25 uses a standard T2 turbine inlet/outlet and you can find a mani/dp everywhere. I can almost guarantee you that the Supra turbo is some funky flange on both ends of the turbine and you're gonna have to have something custom made to get it to fit.
Post some specs and some pics and we can help more.
#8
I had a sr20 t25 on my ka24de s13, made 200hp at the wheels on 7lbs of boost. It was a good turbo and would make a good street turbo for the miata 1.6 or 1.8. I think the ca18 t25 is kinda small and since there is a pretty good supply of sr20 t25s you might as well get that.
Most twin turbo set-ups (oem at least) utilize really small turbos, I'd shy away from any turbo from a tt car (whether it be nissan, mitsubishi or toyota).
Good luck...
#14
Ahh the 4 cylinder RB ... careful when looking at CA18 turbos.. remember that the motor is from 88-89 (18ish years) so that could have some miles on it. But for aplication wise it spools fast and good low end due to only for 1.8L so should be ok. But most upgrade to a s15 t28 so that shows no one wants it.
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