Can I ask what you did to get 400rwhp? What model/year is your car that you dont have LSD... is it an SE?



I've blown NA difs up on less than 200whp, lol - it's all in how you drive it and what you use the car for. The FB guys are swapping axles and rear ends regularly at the tracks from hard shifts.



I will admit, it's odd you can afford a 400rwhp engine but not the extra $ for the rear.



I'm not bashing you, but it would be smart to put a T2 rear in with the driveshaft and halfshafts... you would feel a lot more confident in driving the car. It would worry me to death if I was cruising around w/ more than 300whp on an hand grenade NA rear end backing me up!

Hahaha. Sure.. I won't be able to name all the stuff I have, seeing as how I always forget some of it but here it goes



1991 Mazda RX-7 GXL with TII engine and tranny

Koyo Aftermarket Radiator

Precision PT71 GTS-H

2 Walbro 255's in tank

2 1000cc primary injectors

2 1680cc secondary injectors

NGK plugs

NGK Blue Wires

Front Mount Intercooler (Forget most of the specs but it's 3.5" thick)

Battery relocation kit (Driver side storage compartmetn)

Optima Redtop

Aftermarket Exhaust Manifold to move the turbo forward for clearance

3" downpipe to 2 2.5"

Mazda Speed 3mil cryo Apex and side seals

Huge street port (As big as I could go without bridge porting)

Pinned and Doweled motor

Stage 5 Comp Clutch

MicroTech LT10s

50mm Wastegate (Atmospheric dump)

Turbo XS RFL BOV (Which I absolutely hate and will trade for a Tial or sell)

Custom 2.5" intercooler piping

Polyethylene motor and tranny mounts

Mazdatrix TII to N/A rear driveshaft

Areomotive FPR

Block off plates

Coolant restriction to the top half of the motor

Oil Catch Can



I think that's about it.. I'll list anything else that I can think of that I forgot later. But yeah.. that's my little toy.. right now it's only on 14psi https://www.nopistons.com/forums/pub..._DIR#>/sad.gif One day I'll get it tuned again after I get a meth injection kit so that I can run more than 20ish pounds so that I can make better numbers! https://www.nopistons.com/forums/pub...#>/biggrin.gif

my bad when i posted i was talking about a stock turbo lsd and housing, but i see that you guys where actually just talking about the lsd alone... my bad, i always tend to refer the diff as one whole unit, lol

Coolant restriction to the top half of the motor?



Why do you need meth injection for 20psi? You've got 5360cc of fuel to use, lol... I think meth injection is a good idea, but if you've got a sufficient IC setup and the right fuel and timing, you should be fine to go at least to 16psi before you move into higher octanes, etc.



If you go to that 20psi level, you WILL NOT want the NA halfshafts https://www.nopistons.com/forums/pub...IR#>/smile.gif

Hahaha. I know. I need to get either the TII rear diff and assembly or aftermarket ones that can handle the power. Haha. And yes. I have all the coolant to the UIM and LIM as well at the TB blocked off. And thanks to the MicroTech I no longer have a BAC my idle is controlled by injector pulse widths. https://www.nopistons.com/forums/pub...#>/biggrin.gif

ALSO! I forgot to add this.. The meth kit.. will allow me to be able to run a little more lean with the fuel in the higher boost range so that I can get more power out of lower boost. It's just something that I've wanted to do. *Shrug*

I see about the coolant now, when you said that, I thought blocked the water jackets in the "top half" of your engine, lol..



As for meth, I understand the purpose - i have to use it on the REW FC project since i'm running 24psi. My IC is efficient, but over that 16psi level, meth is just added insurance.

Exactly. That's why I wanted the meth kit. I don't really feel like blowing up 10,000 dollars. Hahaha.