Gamaliel31

Turblown

iTrader: (12)

S362sxe 76mm turbine .91


(8376 from dropdown)

S300sxe

strokercharged95gt

The S362SXE (0.91) has worked great for me over the past few years. You can't beat the price or sound of the BW.

You may need a bit more injector to make 450 rwhp.

Looking at some old logs on 93 octane, I was using ~2,250 cc/min of injector running 19 psi on the S362SXE at 8,000 RPMs and that was WITH additional methanol injection and 11.4:1 A/F. You may get there with some additional base fuel pressure, but it should be close

Gamaliel31

Turblown

iTrader: (12)

About 200rpms difference in "spool" up time.

S362 is will make 550rwhp easy, so zero need for bigger for you.

Howard Coleman

iTrader: (6)

i agree w Turblown and others here that the SXE62 would be an excellent value choice for 400/550. i tested the .91 V the 1.0 back to back and was surprised to find not much difference between the two. the .91 made
good power with my race ports at 8850. i did find about a 40 F EGT advantage with the 1.0 and slightly less EMP/EMAP. i made 488 rwhp at 20.4 psi and was a bit on the rich side.

as to injectors: you have 4100 CC at 100% duty cycle., 3485 at 85% (max you should run). using actual lag figures from my EV14 injectors i see between .26 and .20 flow reduction so let'us use 25% to be conservative...,

3485 X .75 = 2614 CC NET into the engine after 25% reduction for lag.
2614 is .69 gallons per minute or 4.38 pounds of gasoline.
at 11.3 AFR that would be 49.5 pounds of air and 373 rotary rwhp
at 10.5 AFR it would be 346.

my injector sizing for 450:
in order to run to 10.0 AFR with 25% lag at 43.5 psi at 85% duty cycle 5581 Gross injector capacity

it is essential to run AI with gasoline as base fuel. i run 100% meth thru a M15 nozzle at 130 psi.

you may run straight water if you wish, somewhere around 500 CC.

water slightly reduces power.
Gas has 116,090 BTUs per gallon
water has 8087 of negative BTUs
8087/116,090 = 7%

at 450 rw rotary hp you will be using 3558 cc of base fuel NET into the motor at 10.5 AFR
500/3558 = 14%. so water will negate 7% of 14% of your power or 1%... no biggie as long as the delivery
has a curve similar to the base fuel..

you may or may not have an issue with boost creep as you will be bypassing a lot of excess flow around the 400 area.

good luck

Gamaliel31

Howard Coleman

iTrader: (6)

the SXE comp cover is a hair larger diameter, i measured it but don't have the number in front of me...other than that i see no reason
it wouldn't fit V other turbos..

Gamaliel31

Howard Coleman

iTrader: (6)

you can easily do 450 on pumpgas with no knock assuming a proper tune/setup etc. i see no mention of AI which is essential. water works fine at 450.
i highly recommend the SXE62 w a 91 or 1 backend although it may not be the turbo that is causing your spool issue. while you supplied wheel sizes i am not
totally sure i was able to I D it. it is close to a Garrett GTW yet i haven't seen Garrett use anti surge reliefs as in your pic. using your numbers i have a comp
wheel at 6.92 aver sq inches and a hotside at 5.82. the comp wheel has a 61 Trim which favors top end V mid range. the SXE is 54 Trim favoring mid range.

before we get into other factors such as tune etc etc... pls LMK exactly what turbo you have...

Gamaliel31

Howard Coleman

iTrader: (6)

mostly looks O K. you might be looking at boost creep at lower boost levels w one smallish WG. can you I D the turbo? also where's the AI? ports look O K.

Gamaliel31

Howard Coleman

iTrader: (6)

AI is short for Auxiliary Injection.

i suggest you read pages 172 to 186 from my Google Drive document... FD Knowledge Resource/ Auxiliary Injection

https://docs.google.com/document/d/1...dpatiR-rk/edit

you might also refer to my thread "Making the case for the rotary powered FD: The Fix" 122,000 reads. somewhat dated but good background
https://www.rx7club.com/3rd-generati...fd-fix-806104/

AI is essential.

Gamaliel31