Excellent, that car must be a blast to drive.

 

congrats!!!! sweet #'s!!!! Jason!!!
btw please post mods


Alex

 

hey jason, please eleborate how you modified the t-78. and how much.......if i wanted to say modify mine how would i go about it. oh yeah, did you ship my greddy two row???? thanks kevin

 

LOL
I read that issue of modified too...i got a good laugh out of the 586rwhp @ 19psi on the t78.
Funniest thing is, it even says "most rotary guys know this is not possible..."

 

Astro, you're alive!!

If you think that's funny, grab a copy of Performance Auto and Sound with the riced out yellow FD on the cover.

"The owner estimates 450 rwhp" with a TD06. You bet buddy!!

 

Thanks
Mods are in the sig

 

I had majesticturbo do the upgrade. They used a larger wheel.
I will check tomorrow to see if the intercooler shipped.

Jason

 

hot damn, nice numbers

at least now i know what you were doing while you waited for my backordered stuff hah

 

Hey great #'s. By the way, how is your gas mileage with those 1000/1600 injectors

 

get that baby to the track, I'm interested to see what mph your trap!!!

STEPHEN

 

Nice job. Got some room to grow.

What were the un-corrected-into-dynojet Mustang numbers/chart?

 

Same setup as Michel's / "rx7tt95". Garrett GT40 88mm compressor wheel.

 

It must be my manifold...you really like your boost response Jason? You're making over 100hp by 3k rpm which is one of my "benchmarks". I have not been happy with the boost response of the turbo but I do not have a fully divided manifold. Instead of spending $$$ on a new turbo I guess I should spend $$$ on a new, fully divided manifold :-) Problem is, GReddy doesn't sell their T78 manifold seperately! Maybe someone from JT Imports can find a manifold in Japn for me....Jason, send me your map! Oh, hit 99% duty cycle the other night at 1.1kg. Too bad I'm not seeing that boost level until 6K. Glad it's working for you.

 

I have always been impressed with T-78 hp number.. Jason, if you could do it again, would you still choose T-78 over any other turbo kit like TO4R, GT35/40... or any other? I am contemplating of going single and ditch the BNR 3, I want topend with good boost respond. I want to step on the gas around 3.5k rpm and pull hard all the way to redline, instant torque respond. Thx.

 

I like the top end on the T-78. The lag does not bother me since its mainly a highway car and I just have to be in the right gear. I found the turbo spools faster after I removed the A/C and Power Steering pumps. Maybe its me but it seems like it made a difference.
My opinion is the T04R and GT35/40 fizzle out on the top end, although they spool nice.

Jason

 

Thanks for your opinion. What exactly did majestic turbo do to upgrade your T-78? Can give out your secret and how much?

 

I would dump the walbro or add another walbro pump

 

There is no boost response for a T78 it's laggy period, 35/40's are responsive they are great street/strip turbo's drive it around at 16-17p on the street then hit the track with some good fuel and run 25+p. I think you should just get a 40R and a divided manifold you can't complain then I think I may even know where to get one.

 

LOL, I hear ya...Just the thought of spending ANOTHER $4K for ANOTHER single turbo system doesn't make me happy. It appears Jason is making more boost than I am earlier in the rpm range. The only difference between our setups is that he has a fully divided manifold and I don't. Then again, I can't say my port work can hold up vs. Pineapple. Perhaps the larger Cosmo ports don't help spool either....I'm estimating that I get about 3kg at 3Krpm, 5kg by 4 and then full boost by 5Krpm, sometimes 5500rpm. One thing that surprisingly made a difference was switching from the standard Type R wastegate spring to the 1.1kg spring. Not a HUGE diff, but noticeable.

Specs on the Majestic Turbo upgrade...it's a Garrett GT40 88mm wheel afik. It's definitely a ballistic. Cost for the wheel itself is about $250 and throw in a rebuild while they're at it. They high speed balance everything and have to machine out the compressor housing quite a bit. Quality job though and there was absolutely no slop in the wheel itself. Tight and built right. I believe total cost on mine was about $650 which included shipping but I also had my turbine repaired for $125 and had a complete, full, rebuild done. You can probably get everything done for about $400. www.majesticturbo.com

Zero, send me a PM with an estimated price. Just need to weigh my options. One of the reasons I want to just acquire a manifold is that I don't want to have to re-engineer the turbo to intercooler connection and all the other misc. stuff to get it just right :-) Looks like I'll be able to acquire a manifold from Japan for less than $800 too.

 

I have always said lag is overrated. If I need boost I drop down a gear and I get instant boost.
I have never been impressed with the GT35/40 dyno numbers.

Jason

 

I hate getting beat by grandma in her Grand Marquis until I can come up on 4K rpm and adequate boost levels. Like I said, I think you're hitting boost a bit sooner than I am.

 

How many dyno numbers have you seen at 20+

 

With a GT35/40 none, but from the HP numbers under 20lbs its nothing special.

 

To run that boost you need race fuel..how many people do you see doing that?

 

Didn't Ihor make like 473 or something?
That looks pretty good to me.