ok so im doing a twin turbo buildup (in a V8 S10, not 3rd gen)
i just got my turbos today, im using twin t-bird IHI turbos (2.3 turbo coupes), i had always heard two of these things are pretty good on an SBC... but they are looking kinda small... im starting to have doubts... anyone have experience with these on an SBC? what kind of power can i expect? also anyone know what the factory W/G setting is?

right now im not sure what motor im going to use... i have an LT1 long block laying around, but i need a harness, ecm, all sensors, intake, etc... and that stuff can be pricey! so im thinking im just gonna try to pick up a stock 305/350 long block if i can find one cheap enough because i have a complete TPI setup laying around aswell... im expecting my setup to be very similar to 89JYturbos... except my turbos are supposed to be a little bit bigger from what ive heard

 

I have no experience with IHI's on a SBC, so I'm just throwing out what I think. The IHI's on anything above the 305 are going to be very bottle necked. And even on the 305 you will be pushing their limits depending on the power you want to make.

But since you have them, I'd suggest getting a cheap *** 305 and doing it that way. Unless you want to build up a sweet 350 but then you'll probably want to upgrade those turbo's or maybe go big single.

 

I dono about the IHI's but I had two 60/63 T3's also and doubted the potential on my 418 because of the size. If I was going 350 I would prob have used em. but I sold em to a friend who is staying with a 350 and I picked up a Large Single unit to run.

Size comparison.

 

Anyone have a map for these?

 

No. But trust me, they are very very small.

 

what do the 60/63 turbos come off of? they actually look about the same size as mine except the compressor discharge tube doesn't have the bolt on flange thing.... you just clamp a coupler over it like that huge holset

 

id like to make a correction to the above comment.... what years of turbo coupes do the 60/63's come off of, and i know the IHI's are smalle, but they cant be THAT much smaller can they? would they still be good for a truck motor/ torque monster that doesn't see over 5000 rpms?

 

YES.. would be great actually.

 

Yeah I agree with above. They would work great on that, spool extremely fast, make tons of torque. But as far as all out performance goes, they are a bit small, about as small as you would want to go on a 305.

 

though not positive, i'm pretty sure the IHI's are smaller than the .42/.48 T3s that came on the volvos, chryslers, and most turbocoupes.

60/63s came on 85-86 manual transmission turbocoupes i believe. however, these turbos blew once in a while and dealers sometimes replaced them with the smaller .42/.48s because they're cheaper and more available.

If you built a 350 to make max power at 3000 rpm or so, i'm pretty sure silverback calculated out a possible near 800 ftlbs of torque with the 42/48s. Turbos would become a big bottleneck though and become really inefficient maybe even before 5k rpm.

EDIT: optimal street use 350 would probably be a .60/.48 setup. I think you'd have to get two sets of turbos though and put them together. which is possible.
IIRC, 60/63s on crazy joe's mustang 351 don't become fully spooled until the top of second gear but build atleast some boost quite quickly...just not all of it. having a .48 exhaust would remedy that.

 

first of all these are off turbocoupes, second are you sure your not thinking of the IHI RHB5? i know those are tiny... i hear they are good on small hondas (arent they all small?!) and bikes. thanks for all the info though, if anyone else some any more info feel free to share

 

not trying to hijack this thread or anything, but while we're on the subject...

browsing around i found a few IHI turbos, which i've decided against using now. however, i've got a friend with a Sonoma with a 4.3 L Vortec v6, who is looking to run either single or twins on his (like the old Syclone or Typhoon....whatever they called it) ...would they feed a 4.3 sufficiently?

also, i gather that the chryslers aren't sufficient for a 305 tpi...correct? cause i found a TON of these (in minivans, lebarons, etc.) it would be ideal if i could use these, because i've found so many, but if they really spool out at 3000 rpms, it's not worth it.

i've read in other threads that i've searched for that saab 9000 turbos are pretty ideal, especially since they have adjustable wastegates. true? cause i found one of these, and think if i searched more i could get a second.

lastly, the only intercoolers i've heard mentioned are the probe GTs. anything else? i know the later year turbo coupes have them, but are they too small?

thanks.

 

FORD T-Bird 87-88 (water) IHI RHB52

I seem to remember silverback saying somthing to the effect of,
they moved from the garrets to the even smaller IHIs in turbocoupes. the .42/.48 gar's aren't even enough to really tubo a 350 but we should get him in here to clarify the sizing on the IHI's

 

2 chrysler turbos would be fine on a 305. They are roughly the same turbos as whats on the saabs but they have a funky mounting flange. Saab turbos use a standard T3 flange so if you ever wanted to go bigger or something with the turbo you'd only have to switch that and not the flange too.

 

huh… maybe I should just change my name here to silverback to cut down on confusion of the people that know me from other places. I got rid of the crossfire TA earlier this year anyway... is it even possible to change your name here?

As far as the IHI's and turbo fords, you have to remember that hp is proportionate to airflow and those cars were all rated at between 155 and 210hp from the factory, so the T3's were oversized for what they were using them for and the dinky little IHI's were still fine, but spooled much faster/drove like a big engine.

 

so i have a question then.... are mine the RHB52 turbos? i thought those were a different smaller IHI... i am confused about what turbos i have, and how many different ones came on the 2.3 turbo coupes

basically if these will make a good truck 305 motor (lotsa torque, good to 4500-5000 RPMs) then i will use em, if not i am gonna sell em and buy some of the 60/63's i originally set out to buy

 

You know, I've said this before… most of the turbo names that people throw around cover a series of turbos, not a specific model, RHB52 is a series name that covers a fairly broad range… What did they come off of?

Assuming that you're actually talking about a set of 2.3 ford IHI's then I'd say that they'd be a great match for a 305 in a truck… hell, they're a pretty good match for a 305 in an f-body.

 

TPI383... does it say M11 on the compressor housing of those .60/.63's? im looking around on ebay and i've found some M10's and M11's... the M11's seem more popular.... also is this M11 another series of turbos, or a specific model?

 

His are M11's (he bought them from me).

M11 is just a casting number, the basic lump of aluminum before it got machined for the wheel... it doesn't really mean anything

 

well what can i search for on ebay when im looking for those turbos? any model #? how do i identify them?

 

Just keep searching for 60/63 T3's
Keep an eye out on http://www.turbomustangs.com/forums/
Classifieds.


Good luck. Its hard to find a SET of em. I got mine from Mark. Like he said M11 doesnt mean anything.

Just ask for pic's of look for the A/R pictures if they post em with the adds forsell.

 

well can anyone tell me if this is the correct turbo? it says .60 .63 but the only way i can really tell is the compressor discharge tube has the two bolt flange

http://cgi.ebay.com/ebaymotors/ws/eB...EBWA%3AIT&rd=1