adamrs80

iTrader: (7)

Is there a single turbo for the FD that manages to retain some of the low end power that the stock twins have?

I love the stock twins but if they ever go out I might go with a simple single set up however I'm not looking to make a lot of horsepower over stock.

I was just wondering if there is some sort of smaller single that might be good for 300 whp and still quick to spool on the low end.

93rx74lyfe

iTrader: (1)

If you want 300hp stick with the twins. Also you will have much more luck if you posted this in the single turbo section.

ksu-chewie

iTrader: (14)

I am probably wrong, but I would guess one of the faster spooling single turbo kits our there is the GT35R kit at rx7store.net.

TRWeiss1

iTrader: (20)

There's no need to go single if you're looking for 300RWHP. I made 330RWHP with stock twins, sequential, with little to no turbo lag. I also made 385RWHP on stock twins, non-sequential. No reason to go single if you're only looking for 300WHP.

adamrs80

iTrader: (7)

Thanks for the input.
I've been putting off doing a vacuum job and I keep looking at the hose diagram thinking that there is no way it's doing to work when I'm finished. I started thinking why not a single. Until something breaks I will stick with my stock twins. They work extremely well.

serbRX7

iTrader: (9)

ok this is what you wanna do

just buy brand new 99spec twins in non sequential mode and get the wastgat ported

aem Water Methanol Injection system
aem boost controler
hks twin power

optional
supra fuel pump
aromotive frp
850cc primery injectors
downpipe mid pipe no cats heat wrapped - will take alot of heat out of the engin bay...

no more milion vacum lines
this will make thing simple and more reliable

also it will be the most affordable option trust me...

and you will make more then 300 rwhp

you cant beat the fiting of OEM parts any single turbo kit you get will have some lag
low cost turbo kits are junk i learned it the hard way...

TRWeiss1

iTrader: (20)

There’s an old saying - The sequential twin turbo setup is amazing…when it works.

Montego

iTrader: (1)

non sequential suck *** as far as spool is concerned. If you are gonna go nonseq might as well go single.

TRWeiss1

iTrader: (20)

^ I couldn't agree more. :tup: My single turbo lags less than my non-sequential twins did...

ptrhahn

iTrader: (9)

NOTHING will spool like sequential twins, particularly '99 flavor.

So, at that peak power level expectation, stick with them. If however, you're also looking to simplify the system and save weight/heat as well, try the Apexi RX6 kit, a small 35R, or a small T04.

serbRX7

iTrader: (9)

eventually there will be problems with sequential setup...we all know that they are amaizing when working but it's not worth the headache.....

on my car i run single gt35r...

i am only saying
non-sequential for one reson its more reliable vs sequential

also bouth turbos come on at the same time no boost creep at transition
+ gets rid of all them solenoids and vacuum lines
moust people can do all the work and just take it out for tune

save you alot of money and 8h of down time max

as far as single turbo kits gos they are overpriced...rx7 store single turbo kit is junk you see alot of them for sale after 2000 - 5000 miles in for sale section....mostly do to bad manifolds that burn out gaskets... difected downpipes....

i know becouse thats where i got my gt35r kit
after paying for the full kit i instaled it and had it tuned... i had to pul turbo out 3 times for turbo gasket changis... finaly got sick of doing that and got another manifold...
another 400$...i had to mod the down pipe when i first got it didnt work so well ...so i had to chang the flangis...

and lets not talk about rerouting wastgat and welding in bov, larger intercooler instalation,fuel setup,wheels and tire...

there is no point going single for 300hp...

alot of work and frostration and lost driving time...

most of you whent non-sequential on old bit up twins...i wouldnt expect them to work that well...

just open up the exaust no cats and them things will spool right up... you will like it

fd3s7007

DUde,

I respect where you're coming from. Believe me. I have 2 fd's. 1 running a single gt35/40 setup at 462rwhp@1bar and a stock standard series 8 2001 twin turbo. Nothing like the twins setup properly to really give you a run for your money. The singles are great but on track twins catch up pretty fast!! The question really is - What are you after.

KFC3S

What about a S5 turbo and manifold + a power FC and tune?
Its not an ideal turbo, but you would get factory fitment, quick response and simplicity.

no_more_rice

These types of mindless comments always originate with hacks who don't know what they're talking about and/or didn't do the job right. A properly set-up non-sequential system with a fully ported manifold, lightweight flywheel, full exhaust, etc spools just fine: full boost at 3400 rpm and good torque....this has been proven on numerous occasions

The funny thing is most high rpm single turbo dyno queens aren't much quicker in the 1/4, and they damn sure aren't any faster on a roadcourse or mountain road

dradon03

iTrader: (2)

WHO IS YOUR DADDY AND WHAT DOES HE DO?

To the OP there are several dyno graphs out there with all kinds of setups. What you want to be looking at is the power that different setups develop at what RPM it will tell you how the cars running them perform.

no_more_rice

Sorry, I don't speak Canadian, nor do I attempt to understand wacky left-wingers - I'm an engineer

BlowenByTwins

iTrader: (6)

Is your engine ported at all, or do you have stock porting?

Zokus

I love my GT3076R. The spool is not much different than the twins (5 psi @ 2500, 10 @ 3000, 15 @ 35-3800), easily does 380whp, and is so much simpler.

MOBEONER

iTrader: (18)

60-1

serbRX7

iTrader: (9)

462rwhp@1bar nice that about 14.5 psi low boost must have large ports what fuel are you running...

serbRX7

iTrader: (9)

thats right

scotty305

iTrader: (2)

Sounds interesting. Which manifold are you using? Mind sharing a dyno graph?

Radial GT

iTrader: (16)

I have the NS twins, and as far as low end power goes you give up a little bit down low, say under 3000. But lets be realistic, if your idling your RX7 and lugging it on a uphill expecting low end power, you might as well be driving a Camry. This is a sports car, you are going to have to switch gears on uphills, and when you do you will be speeding...

Getting to the point. Yes compaired to the stock twins the NS setup is slower in creating boost, but it gives it back to you in pure redline fun. The simplicity of the vacume setup alone makes the conversion an easy sell IMO. And knowing that if I hatch my twins, I can find another set to duplicate my setup for a pretty inexpensive price is the ultimate.

Good Luck, have fun.

ksu-chewie

iTrader: (14)

I'm pretty sure I will switch to NS, but for now will continue to enjoy my working sequential setup.

no_more_rice

Somebody gets it. Those who talk about "low end torque" with respect to a 13b make me laugh. Buy a vette, you've got the wrong car. All you're ever going to get with these engines is a mid range (street friendly) or a top end oriented powerband with a big single turbo and/or aggressive porting. A smooth, controllable powerband from 3500 rpm up is ideal for the street or roadcourse - no spikes, no secondary turbo transition, limited hook-up problems. Non-sequential or medium sized turbos deliver that kind of power. If you need more, do a 20b conversion, but be prepared to upgrade everything behind the engine.

It's honestly not much different with a ported manifold and lightweight flywheel, and pulls better on top.