von

Thier is pics on how to bolt a turbo to N/A. Well the pics are with a S4 turbo. My ? is whats the difference using a S5 Turbo?

Next ? is since the N/A is high comp and should only go to 12psi max ( or some say) then can I put a bigger compresser in and make more power at the same 12psi or is thier a 12psi limit because of the power it makes?

Hows everyones N/A turbo running? And is thier dyno results yet. I want to see if the N/A turbo will make more power at the same PSI then the original Turbo. If so then this would be the best of both worlds. Low end and high reving am I right?

von

Ok I know the answer to the second ?. Common sense. ITs the turbo pressure not the power thats bad for high compression.

dr0x

I believe its limited to 12psi because of the cfm it flows. Going to say a to4 @ 12psi with a way higher cfm will probably damage your ****.

Bambam7

Well, my weak apex seal is going.
I have seen 13 psi in fourth.... that's with a nicely ported wastegate, and a big dual core FMIC. It really hauls ***, but it's getting slower as I lose compression in the rear rotor.

My boost bleeds off to around 6-7 psi at redline though.. so a bigger turbo/compressor would really be nice.
It would push the 12 PSI at a much cooler temp, as well as much less intake restriction than a stock wheel. That's where the extra power comes in. You'd still need extra fuel though.

Rotorific

iTrader: (1)

The S5 flows better and I would suggest using an S5 turbo and mani. -Gabe

von

So bambam? can you elaborate? You saw 13psi but what was your fuel readings? where you lean or just having to much fun? I would like to do this but dont want to blow my engine. How is Aron Cake doing with his?

von

What 1/4 mile time did you think your car felt like when it ran healthy? And with a bigger comp and streetport , can you run high 12s with it?

Rotorific

iTrader: (1)

No 1/4 mile time is worth saying unless its from a slip because RX-7s feel fast as **** all the time, but my junk only runs a 14.9. slow as **** oh yeah NA stock ports.. yeah

von

I think thiers a big difference betweeen teh feel of 12s and the feel of 13s

nitroracer

iTrader: (5)

why not just put a superchager on it..?

Aaron Cake

iTrader: (1)

Better wastegate, better exhaust flow. Those are the two main ones.

It's all relative. A bigger compressor will flow more air at 12PSI, so you'll be putting more stress on (and making more power) then engine regardlesss.

Mine is fine, save for a bad clutch. She's currently waiting in the driveway to be garaged, at which point the transmission goes to be rebuilt and I will be beginning an engine rebuild (want more power).

All things being equal, the NA turbo will make more power due to the higher compression.

Bambam: What did you do to kill the rear rotor? Is your MOP working well? Have you detonated seriously?

KiyoKix

You guys are making me proud...even though you're not N/A anymore, you're still not giving in and just buying a turbo because it's the easy way to power. I prefer the N/A turbo over a TII due to the higher compression ratio (I'm not a big fan of almightly power, just what is needed/efficiency).

Turblown

iTrader: (12)

Bambam i thought that motor was new? hmmmm...... I'm going to be atempting this for fun w/ a friend on his 7. After/if the motor blows though its gonna get a TII motor. Its either that or nitrous but we are pretty far towards turboing it since its got a remany in there.

Xentrix

I remember bambam saying he was pinging. I had asked him if he had enough fuel cause he was using a TII pump and 4 550's. I'm not sure though, I went back a couple days on the forum but I didn't see his thread.

Turblown

iTrader: (12)

bump

nitroracer

iTrader: (5)

^

von

I want to know if you can run high 12s with this setup plus a compressor upgrade.

Bambam7

On an N/A engine... definately, the higher compression really gives the turbo an extra bite....
Get a streetport, 3" exhaust, BIG secondaries, a walbro, and it's probably doable.... maybe not on a regular engine, but the higher comp helps a lot.
Anyways, I know for a fact my car was in the 13's for sure, and that's with a stock DP.
Who knows if the tranny can take it though.

Anyways, I was leaning out whenever boost got over 8 psi... I was pinging, but I didn't keep doing it. I need to rewire my fuel pump, and get a tII fuel pressure regulator. Maybe bigger secondaires too, if that;s not enough... but it'll be close. (4 more psi to handle...)
Engine rebuild coming again very soon, I want the speed back.. it feels slow now (maybe 14's)

von

Wel I dont think 13s is that quick as most people think... Not intil you hit the 12s. I was at the drags last night and almost everything was in the 13s. ONly a couple were in the 12s. I think 13s is good for mid 8s in the 1/4. I want high 7s. hehe. Wich is high 12s or around thier. Im just adding 5 seconds. My car is already almost setup for a turbo. Its gutted engine lots of space , silocone , all that other stuff. Just looking for cheap used parts now. I dont have a streetport but my engine is fresh 30k miles. And I should run mid 14s when I go back in february.

Mark'sMazda

I think 13's are preatty good. It's fast enough to keep up with preatty much any STOCK car on the road. It may not be the quickinst thing at the strip but, it's quick enough to take out 99% of the honda population.

T210thAnniv

you said it MarksMazda when got my t2 with just a dp and boosted 8psi i was ******* up people on the turnpike like hondas, mustangs, and more hondas

Houstonderk

iTrader: (3)

Just don't lean out to much on boost. I just blew mine because the fuel gauge was wrong. I am doing another n/a turbo right now because it feels so much better than a stock Tii.

staticguitar313

iTrader: (2)

Yeah i'm collecting for my first right now

SonicRaT

iTrader: (6)

Wow, back from the dead over 3 years ago! Regardless, if you use a s5 turbo like aaron did, the hotside as well as the wastegate will hit the frame rail.