So im buying a turbo kit off someone on this forum
and Its a borg warner ihi. He said its off the thunderbird. Is it safe to boost 10 psi(with this small turbo) since thats what it's set at. My engine is stock with no built internals

anyone else using this turbo with a stock engine?

he said it was a RHF 6 0r 8 (forgot which one he said haha)but if its from a thuderbird

i still cant get any good info on this damn turbo

Well if im correct the ihi rhb5 is from the probes and such. Im not real sure if its the same turbo... However, you gotta think. Its coming from a car with about 140 hp and like 190lbs torque? (correct me if im wrong)

I think you would be better off going with the 14b if your looking for a semi-small turbo to run on stock internals.

To be honest i dont think the ihi turbo will do much good. It being so small and everything. Thats a pretty small snail.


But, you not being able to find some feedback might tell you one thing. You could always try it and then let us know how the feedback is :)

good luck.



2gnt (period)

the RHB5 (VJ11) was used on the mazda MX6 as well so you might try Racingmazda.com for specs and parts.
from the look of the exhaust flange i cant tell if a std 5 bolt gasket would fit, it looks funky
i think the part # for the gasket is 13-490B (from mazda) and the O2 housing is #13-515A if you want stock stuff to try and mod it to work on our cars

do you have a Serial # plate on the side, or on the compressor housing? that will help identify the proper compressor map to look at to see if you should use it on your car

will say" Turbo spec (blah blah)
serial no. RHB5 (blah blah)
Parts no. (blah blah)"
then look here http://www.suzukituning.com/General/Turbo/TurboList.htm for pics and information

that was my next point... lol took the words straight from my mouth. :)
couldnt have said it better myself.


2gnt (period)

once i get it ill let yo know, it should be on its way but ill pm the guy and ask him

the larger rhb-52 were in the last version of the thunderbird turbo with atx like 1988-1989
very good turbo that could push 12 psi on the ford 2.3 engine
it was smaller than the garrett t3 of the previous thunderbird however
they don't cost much to rebuilt and are water and oil cooled

it is a good turbo for a custom built and way better than a 14b because of its shape, making it perfect for log manifold PLUS you could get a o2 housing from the same car and use it to built a nice downpipe

the ford probe also use a ihi rhb5 but it was a smaller unit

I know that a few of my turbo log manifold from years ago were used with tbird IHI turbo and they were producing good numbers on the 420a

Alain

You're better off buying something else.

Check out spooled motorsports. They include things like compressor maps, max power efficency, wastegate settings. You can buy used, new, rebuilt.... They carry everything from IHI to KKK to borg warner.

Great prices.

Originally posted by foggy45
the RHB5 (VJ11) was used on the mazda MX6 as well so you might try Racingmazda.com for specs and parts. from the look of the exhaust flange i cant tell if a std 5 bolt gasket would fit, it looks funky i think the part # for the gasket is 13-490B (from mazda) and the O2 housing is #13-515A if you want stock stuff to try and mod it to work on our cars do you have a Serial # plate on the side, or on the compressor housing? that will help identify the proper compressor map to look at to see if you should use it on your car will say" Turbo spec (blah blah) serial no. RHB5 (blah blah) Parts no. (blah blah)" then look here http://www.suzukituning.com/General/Turbo/TurboList.htm for pics and information

man I can find it. damn i such a BANME! :(

heres a pic pretty big to show numbers. It says 51T-21 98 1






theres other random numbers but no serial :
some where on it said R16J

i also found
4
52
20-R

thats it
not shown in picture, will try to get better pictures tomorrow of the numbers

post picture of the manifold please

I'm curious to see if its one I made years ago

Alain

here you go buddy


i know theres a crack and i have to fix it.

no not mine
my flanges were better
and that crack will crack again if you don't grind really deep in that soldering and redo it

Alain

I can't remember exactly what the model of the turbo on my '87 t-coupe was, but i do remember debating replacing my t3/t4 with it, to make it more street-spooling-friendly, but did some research and yeah it'll put 15-18 psi, it's electronically boost-controlled between 12 and 15 (depending on year, ECM, and gear), so you'd need an external WG, and it was only good to push around 200-220 hp. That's sittin like 8ish psi, which is about the top of stock internal that you can safetly run. there's 350hp stockers out there, but don't think it'll be that way with all stock 420's. all depends on your fuel/ignition mods, all that good junk you probably already know.

so anyone know the internal wasgate setting? is it 10 psi?????????


people say different things about it.

lol, i'm a dumbass... double checked and mine's internal WG... for some reason i thought it wasn't! Anywho... 7psi is what this guy said http://www.mustangforums.com/m_4959528/tm.htm about halfway down:
"the '88 turbocoupe uses ihi turbos that are pretty small. Even if you got two, they're a little small for the 5.0. You could use two turbos from an 86 or lower turbocoupe/svo/capri rs/xr4ti, but make sure you go with two of the same size turbos some came with .48 a/r exhaust housing T3's, the others came with .63 a/r T3's depending on the transmission. I would recommend the .48's for what you're wanting. You won't be able to run lower than 7psi with the stock wastegate spring, even with a boost controller, but boost won't come unless you are on it a little bit."

Although another guy said 9, so it'd say the best way is just to test the damn thing yourself. hook a regulator/gauge to a small air compressor and have at it.

Yeah So i was doing some searching and I found it its suppose to be at 10 psi

I also found this

http://www.denverspeed.com/wastegates.html

Wheres a good place to get a spring?



Also
This is my turbo set up. Let me know if it will work

Ihi rhb52 turbo
manifold
downpipe
vortech 12:1 FMU
FCD
1st gen BOV
evo 8 fmic with piping
gst stock fuel pump ( someone told me this will work, is it true?)
gauges

just need the all small misc items, couplers, oil lines.....
also going to get a turbo timer


any recommendations?
is a s-afc required for this setup?

Originally posted by jaimer
Yeah So i was doing some searching and I found it its suppose to be at 10 psi I also found this http://www.denverspeed.com/wastegates.html Wheres a good place to get a spring? Also This is my turbo set up. Let me know if it will work Ihi rhb52 turbo manifold downpipe vortech 12:1 FMU FCD 1st gen BOV evo 8 fmic with piping gst stock fuel pump ( someone told me this will work, is it true?) gauges just need the all small misc items, couplers, oil lines..... also going to get a turbo timer any recommendations? is a s-afc required for this setup?

alright did some more research and the GST pump isnt enough with the fmu 12:1

So I need to get a 255 or 255lph

the 190 wont cut it right?

I need some help.

So thats going to be my low boost set up and I have a FMU 12:1 setup

I read that my car might run too rich.

I heard 8:1 is better suited for our cars with stock injectors.

What does a re-calibration kit do? Does it make the 12:1 to 8:1? is it like a disk you replace? (sorry im new and cant find info)

http://www.vortechsuperchargers.com/product_variation.php?pvk=187


they also sell a bleed valve that looses 2 pounds

so from 12:1-10:1

whats easier and whats better for my setup 10:1 or 8:1?

im going to run from 5-7 psi max
on stock injectors for a bit till I have more cash to upgrade later

Please any suggestion is greatly appreciated


Thanks

12:1 is the correct rate for stock injectors, i ran that for like 2 years before goin bigger, and I never had a problem with rich/lean conditions at 8psi. Only issue I had was cracking the stock rubber fuel hoses (Pressure can get upwards 110psi).