curiosity
 

i have an 88' na that i have been working on for a good time now...
street port, 50 series webber, 3mm seals, turbo ii drivetrain, holley red fuel pump, water jacket mods, deeper oil grooves in the rotors, msd, electric fans, ....i think thats about it

need some guesses on horsepower output and sugg. on how much spray i can use or if using a 6.5l diesel turbo with 7psi will work

Go dyno it. Why guess, when you can get the actual numbers.

any ideas on the other half of the post?

I would not recommend a turbo from a diesel. Have you seen how massive the hotside is? It would take forever to spool, and make the powerband too narrow. Not to mention the issues with flanges.

Plus it is cheaper to get an eBay manifold, or a TII manifold.

Of course, if you are wanting to do a 6 port turbo, you have alot more work to do than you think!

Did you use 6port irons or 4port irons when you built the engine?

NOS is cheaper and easier IMHO.

HP is tough to say really, aside from the SP and carb setup the rest of the mods dont really add much HP and its hard to judge how big the SP is. I'll guess 160-180whp, but as VEX said, dyno it to really know...

4 port irons

I believe he used 12A plates....I told him as far as I was aware, with a massive streetport, he still would probably see 200-220whp at most with everything absolutely perfect, but wasn't sure.

what size shot?

See if you can talk to this guy....
http://rotarycarclub.com/rotary_foru...hlight=nitrous

thanks again...i just sent him a message.....another option.... can i just run 7psi on a stock turbo ii setup?

7psi is within the comfort zone for a stock T2 setup... NOS would still be much easier/cheaper, lol.

You may get up to 200whp NA w/ the 4 port irons a big enough SP, but its a stretch... good luck and keep us posted though!

will i get an extra 100hp out of 7 psi....?

Stock 13BT(TII motor) on 7-8psi is 185-205hp at the e-shaft.

It all comes down to tuning. People run 300+ shots through rotarys all the time.

There's no way to know how much horse power you will get from 7 psi. Different turbos flow different amounts of air at the same boost levels. That being said, I doubt 7 psi. from any turbo will give you 100hp. Can you give specs on the turbo?

^I think he was considering a stock TII turbo

You're not giving us enough information, so we can't give you a detailed answer...

"Diesel turbo" and "7psi" doesn't tell us jack shit.
At minimum, we need to know:
compressor wheel trim - inducer (minor) and exducer (major) wheel diameters
turbine wheel trim - inducer (major) and exducer (minor) wheel diameters
turbine A / R

Until you can give us these specs, others are only going to give you a WAG...


-Ted

Defined Autoworks hit 216whp on a dyna-pak using a 13B-RE setup for N/A.

but it's not a stock turbo......7psi on a diesel turbo isn't teh same as a stock turbo.

If anything the NItrous might help him spool it easier but asking to guess power is crazy.....

Do finish up andpost results though...I wanna see when you see full boost.

would a stock t2 turbo work alot better?

A hybrid stock turbo, or an eBay T04 manifold with a T04 turbo would be better than the diesel turbo.

+1

where can i come across a 12a turbo header?

I am not sure on this.... If he is using a 13B setup with 12A plates, will he need a 12A or 13B manifold setup?

Turbo motors don't have headers.

The lower manifold would have to be 12A, if he is using 12A plates it must be a 12A keg. So anything else wouldn't fit on the motor but the 12A size parts. It may be adapted to work with some sort of 13B upper intake though. It could also have been custom.

I think he just chose the wrong choice of words...Not really thinking headers :wink:

The plates won't matter - the housings are where the main difference (width wise) is at.

If there's 13B rotors/housings - 13B width
If there's 12A rotors/housings - 12A width

All I know from what he has said on another site is it supposed to be a 13B with ported 12A plates idk lol

MEASURE!!

If it is a bastard engine, and requires a 12a exhaust manifold, he might be in for some fab work. Get a 12a exhaust flange (mazdatrix or RB sells them) get a cheap T04 manifold off eBay for an FC or FD(+/-$100) hack off the flange and start to pie cut and weld!!

Genius!

Thats what I was thinkin DJ just wasnt sure....

Right...but...you tell me how you can mix and match 12A plates and 13B Housings/Rotors.

and the final verdict is?

Internal have to match the housings you're using (e-shaft, rotors, etc.) but the irons are innerchangable. The housings and irons need to be pre '86 so the coolant seals match.

^So the plates can be swapped...I thought I had heard you could, but wasn't sure.

i would hope its possible...its already built...lol....im definetly doing the turbo setup though....gonna use a stock turbo ii setup with the webber....just to see what it pushes...hoping for the best

A blow through system can yield good results. But then again, it is ALL in the tuning!

Yes...Pick up a wideband before you start screwing with anything...And make sure your carbs are properly prepped for boost. Rotaryshack would probably be a good place to look for blowthrough carb info :icon_tup:

so whats a blow through setup?

Where you have the turbo compressor outlet running boosted air into the carb....Hence the the turbo pressure is "blowing through" the carb as opossed to some older setups where the turbo inlet sucked air through the carb (Draw-through setup)

oh ok gotcha......they go for a pretty penny?