Per Dave, the TT Supra pump IS the Cosmo pump. He loves the Cosmo pump.

Going for a test drive. If the flow holds @ max boost, Walbro pump - believe it or not - takes it. Mainly becuase the A draw is about 75% of the Bosch and the noise.... oh thankfully it's so much quiter than the Bosch.

Although, 2nd gear pull on race tires in the rain is going to be sketchy. I loose traction by 5500 in the dry :D If there's a problem to have, traction is a good one to have

I was hoping that it was just the pump and not plugged injectors, or overheating injectors, or debris in the FPR (so that it can't close completely), or sugar in the fuel tank, or some other weird issue that I haven't seen yet.

Large injectors are very expensive, so anything injector related would have been very bad news.

I am interested to see a dyno graph on the sequential turbos after you get them tuned.

Did you port the turbos or do anything to them? I have a set of Twins that I have had forever (I don't even remember why or where I got them). I checked them over today and they appear to be in good shape. I might go that route after your inspiring example.

(First I should learn to work as hard and fast as you and get around to replacing my rotors. I seem to lack motivation because the car runs fine right now.)

If you're serious I may take you up on it. School right now is kicking my trash (Astro-Mechanics, Thin-Walled Structures, Vehicle Vibrations and Controls, Thermo Dynamics, Aero/HydroDynamics, with a manufacturing processes lab for fun). I'm aiming to get something put together next weekend and I think I have a design in mind--we'll see though.

Once I have that and the scavenge pump in I can start concentrating on the important things (ECU, and custom manifold). But I imagine that this car won't be "done" until I'm in my own house and can actually take it completely apart and build it from the ground up.

PS, I demand more pictures/movies. Or I may just have to send you a hooker to bribe them out of you.

How loud are those 044's? I'm gonna have 2 of them in my hatch feeding off a surge tank. Sounds like I might have to make an insulation box around them.

Why thank you. I would definately consider them, I love them, even run non-sequentially they make great power. If the gearbox was a little better geared there would really be no need for the sequentials but alas, not yet. Really was prominent today at the auto-x

The only thing that I did to the turbo's was port the WG, replace the flapper, and ease the opening into that area. Other than tha, they are bone stock.

The injectors aren't that bad, ~$65 each I think? Although they are getting replaced over the winter I believe. We were touching 89% duty cycle on the 403 run with another pound to add. i may be upgrading the injectors and the ignition over the winter as well. We'll see what happens if we can ever get a clean dyno day out of her

Dead serious. PM me if you want to chat about it. We'll definately be able to work something out though.

LOUD! They make the Walbro seem silent..... seriously. To bad you already bought two, I would've sold you mine. Wait, two Scott? Seriously? That's a ton of flow man!

First: What size injectors are you running ?
Second: Where did you steal them?
Third: 89% slightly high, even for peak and hold (are they linear at that Duty cycle)?

I am currently throwing a lot of ideas around so I may not get to the Twin Turbo idea for a while.
Idea #1 Semi-PP (to be daily driven).
Idea #2 Attempt to get 200+ WHp from 6-port
Idea #3 Try for 300 WHp NA out of my 4-port (Street port only)
Idea #4 Install Twin Turbos (or GT37) and try for 432 WHp (2X NA HP) at 14.5 psi boost (even if, by then, it will have been done before).

Hey, if you want to get one of these off my list for me, I would be content with your word on the feasibility of the 200+ WHp 6-port. (You know you always wanted another project).

The Turbo mod can be done (as you have so illustriously proved), so I mostly would just do it because I want a 432 WHP RX7, the Semi-PP is also because I want one, and the 300 WHp NA streetport is because I think I can.

I go away to paradise and have to come back to this crap! J/K man.. I'm totally stoked you nailed that 400whp with room left!

Of course, this means I'll have to make 450whp, but thats ok. I was going to mention to you at some point, maybe get a locking gas cap, lol. Hopefully the lab gets you some news you can use on the clogging!

That's alright, make your 450RWHP, I'll still have 2x your power down low :D

If I can ever find a lab that will test filters, I'll be all set. Although now I'm starting to think that it wasn't sabotage, but instead the pump starting failing along time ago and the "Clogging" is due in part to the pump sucking down 2x the amount of Amps that it should, running hot, running slow, and puking parts of magnet, armature, etc, out of itself.

750/1000 - original power goal was to be 350-380. We're beyond that so they're a little short on duty right now.

Marren Fuel Injection.

No, which is why I want to go a little bigger. I'm shopping around and will probably change out both primary and secondary but stick to 750. I'm looking into some Paul Yaw injectors to swap out over the winter. Also thinking about swapping fuel rails too. We're not entirely sure.

I like the semi p-port idea. I think 200whp from a 6-port is feasible, I've seen 187rwhp. Although the 13 extra will probably require a MAP based system and a custom intake, but I bet it's doable. 300whp from a 4-port would be sweet though, I bet you'd have to spin the bejeezus out of it, and run a custom mani. I think it's a stretch though. The highest N/A hp I've ever heard of, strait from the mouth of the guy that did it was 380BHP in a P-Port.. 380BHP would equate to ~315 wheel.

In my opinion, in order to get 2x N/A power running just about 2x N/A "boost" you would need a turbo whoes "plugging" effect is equal to the very small amount of power that's missing from the vac @ WOT. It would be interesting to dyno this engine N/A.

I think I found one actually - I may be picking up an FD roller in the very near future :D I think 200 whp in a 6-port is entirely possible.

Semi P-Ports are cool. I would be much more impressed with a 2 rotor, 300 whp N/A though... that would be badass.

You can say that again!! I would love to see that (0.91L and 38 BTDC timing FTW)

Do you intend to take the Twin Turbo out and put it in the FD and then build the 6-port for the '88? If so, I would hope that most of the beautiful intercooler work would port over to the FD (although I think you like doing that kind of thing anyway).

I won't know until I see what I get for power from an E8 (Yukon Coil packs) and 9.5:1 rotors. According to my calculations:
Actual Power: 216 WHp @ 7500 rpm and 160 Wlb-ft @ 6100 rpm
Power based on VE with 8.2:1 rotors (if ignition is really an issue and it isn't something else) = 248 WHp @ 8500 rpm and 176 Wlb-ft@7700 rpm
Power based on no VE change going to 9.5:1 rotors (11% increase) = 277 WHp @8500 rpm and 195 Wlb-ft @ 7700 rpm
Power based on lower dynamic head loss from shorter-runner custom intake manifold (Shifting power band 1000 rpm) = 195 Wlb-ft@ 8500 rpm = 315 WHp @ 8500 rpm

Bear in mind that none of these calculations require VE in excess of 108%, nor do they require revving in excess of 9,000 rpm, so they should be completely feasible. Of course, this relies on piston-engine rules of thumb holding true. Namely:
Torque is a direct function of VE
Compression ratio improves performance by about 8% per full number in the 9:1 range
Intake runner loss calculations (relying on relative surface smoothness, number of bends and length) are similar for a rotary.

We will find out in the spring (if I ever get the high compression rotors in the engine and an E8 for in the car).

(I am expecting the streetport to exceed my P-port power, actually) I am going to build the P-port using Renesis housings so that I can locate my exhaust port differently.

HA! That's ballsy for an engine that's so pristine ;) I would have to build an entirely new exhaust system and I seem to be getting overloaded with projects this winter. Altough, I think the RE mani would be the best suited for an N/A - least amount of bends.

The FD will recieve a 13B-RE engine. Whether it is the engine that is in the FC, that will be determinted based on timing. Ideally I'd build an RE with twin GT28's or 32's sporting thier own wastegate and runner. They'd be parellel which is why I'm leaning towards the GT28's. I'd like to see 450 RWHP and slightly quicker spool than I'm getting with the twin's running non-sequential.

I still haven't put a deposit on the FD, although I did just call the owner to let him know that I'm ready to do so.


What are you running for coils now?
I would REALLY like to see some back to back comparisions between whatever coils you're using now and the Yukon truck coils. I'm actually planning on upgrading to them over the winter. Either those or some Bosch coils that have been dyno proven to give an increase over the renni coils which the guys at MoTeC loved for a long time.

If you're going for some 9.5:1's.... isn't it 9.7:1?.... why not just go for broke and rock some FE 10:1's?

Why would you expect a street port to exceed the P-Port? The P-Port will be peakier no doubt, but it can swallow a ton more air. I would think that the P-Port would overtake the street port after a certain RPM.

So I thought I would give a little update.

The Supra TT pump, while it is dimensionally the same as the Cosmo pump, it is infact ever so slightly different in it's output. It produces roughly 10% more flow than the Cosmo pump at the same voltages and pressures. I am currently looking for the cheapeast place to buy them so if anyone can get them for <$200, let me know. That's the cheapest I've been able to find.

This pump, while it's basically the same as the Cosmo pump and I don't like replacing broken parts with the same parts, will give me the flow that I need if I decide to swap turbo's and go for a 450whp turbo setup. I doubt the I will though. THe car is retardedly fast as it is. I was at a autox event over the weekend on race tires and couldn't keep traction at all. Traction Control is something that I need to do over the winter. I need to work an input to turn it off though

Oh now you want 450whp, lol. I just plant a little seed and watch it grow :)

When do you start your winter projects?? More importantly the stopping part of the equation?