Single Turbo RX-7's Questions about all aspects of single turbo setups.

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Old 09-20-02, 09:15 PM
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Originally posted by T88Kid
only once.....on the way back to the shop........


Too muh power for the street. Plus not friendly to the pocket on race gas
Yah I would have to say that 600 whp on the street would be a death wish.
Old 09-20-02, 10:39 PM
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Hey T88kid:

Looking at your dyno graph it clearly shows boost was climbing and never stabilized....what happened after ~6.5krpm ????? You're telling me with 26psi you would have been close to ~650rwh !!!!!!!! with the extra 100 rpms!!!!
That graph looks identical to one of my own(not same numbers) when I forgot to connect the wastegate........boost kept climbing with no stopping 'til I lifted. Horsepower and torque peaked out at exactly same rpm when I lifted.

Congrats on the #'s anyway....................
Old 09-21-02, 03:09 AM
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Nice numbers, but...you got a weird "blip" at 6,000RPM and the power falls immensely after it peaks.&nbsp It looks like the tuning is a bit off.&nbsp As for the power falling flat like that, the whole system is choking somewhere...

BTW, the hp and torque lines don't intersect cause the DynoJet allows for different scaling.&nbsp The scan doesn't show the extreme right hand vertical side of the graph which would show a different set of numbers hp versus torque.



-Ted
Old 09-24-02, 08:49 AM
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Originally posted by RETed
Nice numbers, but...you got a weird "blip" at 6,000RPM and the power falls immensely after it peaks.&nbsp It looks like the tuning is a bit off.&nbsp As for the power falling flat like that, the whole system is choking somewhere...

BTW, the hp and torque lines don't intersect cause the DynoJet allows for different scaling.&nbsp The scan doesn't show the extreme right hand vertical side of the graph which would show a different set of numbers hp versus torque.



-Ted
You are completely right. The tuning is definitely off and my secondary injectors also had problems. We are going to work out those bugs this week as we are scheduled to dyno again in friday.
Old 09-25-02, 02:42 PM
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Thanx - I would think a little "constructive criticism" would be helpful instead of congradulating you on the big numbers - those ARE big numbers!

I think with a little more tuning, you'd get a pretty nice graph - you're pretty close as it is.

Is this motor doweled or reinforced in any way???&nbsp Or did a miss a thread on your mods?



-Ted
Old 09-25-02, 05:23 PM
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Originally posted by T88Kid
mostly tuning and secondary injector problems. We will be back on the dyno in a few days when i get the secondaries back.

This is a list of mods: Greddy T88 turbo w/1.15 housing, Greddy elbow, Greddy FMIC, ported upper and portmatched lower, MVA Motorsports street port, extra pins on block, 4msd 6a, 4 msd coils, 4inch dp, Greddy exhaust, HKS wastegate. 850 primaries, 1600 secondaries, Boch racepump, supra intank pump, fuel lines, Microtech ECU.

I'm at work now......I'll post dyno sheet tonight.

Mario
Found this info in the early part of the thread.
Can't wait to hear coverage of your next dyno session.
You should get a video on it. Good luck.
Moe.
Old 09-25-02, 09:23 PM
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"pinned" motor...that explains it!
Thanx moespeed!


-Ted
Old 09-25-02, 09:35 PM
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Originally posted by moespeed


Found this info in the early part of the thread.
Can't wait to hear coverage of your next dyno session.
You should get a video on it. Good luck.
Moe.
get the boost gauge on video also
Old 09-25-02, 10:18 PM
  #59  
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hey Mario, am i still invited for friday or what?
should i bring a cam corder, or do you have one?
Old 09-26-02, 01:43 PM
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Originally posted by RETed
"pinned" motor...that explains it!
Thanx moespeed!


-Ted
Ghetto talk........pinned, doweled, reinforced.....all mean the same. Just used to saying pinned.
Old 09-26-02, 01:44 PM
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Originally posted by SPEED_NYC
hey Mario, am i still invited for friday or what?
should i bring a cam corder, or do you have one?
I'll let you know tonight or tomorow morning whats going to happen. Rain might kill it if it is raining too hard.

DRT is quite a ride for me from the shop. PM me your number so I can call you.

Mario
Old 09-28-02, 01:02 PM
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Any news Mario??
Old 09-28-02, 07:03 PM
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Did you lighten the rotors or use extra pins on the stationary gears?

I'm on the fence as to pinning the housing and stationary gears on my next engine (parts sitting in the garage).

J
Old 10-07-02, 10:44 PM
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Ahhhhhh, alchohol has it's advantages.........
Old 10-08-02, 08:29 AM
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Originally posted by RX794
Ahhhhhh, alchohol has it's advantages.........
Not running alcohol on my car dude. However, I know of one that has the same port os my car and smaller turbo and dynoed way more than I did w/dual ball bearing t7x turbo.

I'll get pics of it if I can.

Mario
Old 10-08-02, 09:55 AM
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Hey Mario you should come down to Nauet on a Wednsday or Sunday night. Theres a 10 second vette down there.
Old 10-08-02, 11:10 AM
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Originally posted by T88Kid


Not running alcohol on my car dude. However, I know of one that has the same port os my car and smaller turbo and dynoed way more than I did w/dual ball bearing t7x turbo.

I'll get pics of it if I can.

Mario
Riiiighhhhhhhhhhhhhhhhhht.............. hey if you say so.
Old 10-08-02, 11:25 AM
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Originally posted by RX794


Riiiighhhhhhhhhhhhhhhhhht.............. hey if you say so.
ok dude......whatever. You say I am running alcohol than I am. If you say i am running JET fuel than I am too. No sense in arguing with you if youd don't know dick about my car.

You must be confusing my car with the other rex at the shop.

Last edited by T88Kid; 10-08-02 at 11:29 AM.
Old 10-08-02, 11:26 AM
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Originally posted by Silver93TT
Hey Mario you should come down to Nauet on a Wednsday or Sunday night. Theres a 10 second vette down there.
Wow they still race up in nanuet? I used to go there a few years ago with my 11 sec stang. Those were fun days.

I though the cops cut down on the racing up there.

Mario
Old 10-08-02, 02:52 PM
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Yea every sunday and Wednsday night. I usually just go to hang out advertise my business, but occasionally there is a fast car worth playing with. They meet around 10 pm by the McDonalds on the main strip. The cops are usually pretty cool and don't mind unless people start screwing around in the parking lot.
Old 10-08-02, 03:06 PM
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T88Kid, you say you were running race gas, what kind? Just wondering if its the unleaded 110/112/114 or full C16 leaded stuff.

I was planning on turning my boost up to 25lbs. and beyond but just wanted to see what others were putting in the tank to do it. (I run the C16 over 20 lbs. but it might be overkill).

Thanks
Old 10-08-02, 03:52 PM
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Originally posted by T88Kid


ok dude......whatever. You say I am running alcohol than I am. If you say i am running JET fuel than I am too. No sense in arguing with you if youd don't know dick about my car.

You must be confusing my car with the other rex at the shop.
You're right, my bad.
Old 10-09-02, 07:53 AM
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Originally posted by CrazyCanuck
T88Kid, you say you were running race gas, what kind? Just wondering if its the unleaded 110/112/114 or full C16 leaded stuff.

I was planning on turning my boost up to 25lbs. and beyond but just wanted to see what others were putting in the tank to do it. (I run the C16 over 20 lbs. but it might be overkill).

Thanks
I was running c16.
Old 10-10-02, 02:49 PM
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How are you getting boost to build that much, that quick with a T88/1.15? I can't get past 10lbs. of boost at 6k. I have the same turbine size but a much smaller compressor(62-1). Anybody else with ideas? Could I be too rich? I don't believe my timing is too far off. Wastegate is not stuck open. What other factors play into this.

Those are fantastic numbers. Congrats! Have you dynoed on pump gas yet?
Old 10-11-02, 08:57 PM
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Originally posted by nd4spd
How are you getting boost to build that much, that quick with a T88/1.15? I can't get past 10lbs. of boost at 6k. I have the same turbine size but a much smaller compressor(62-1). Anybody else with ideas? Could I be too rich? I don't believe my timing is too far off. Wastegate is not stuck open. What other factors play into this.

Those are fantastic numbers. Congrats! Have you dynoed on pump gas yet?
Thanks for the compliments. What other mods do you have on your car? What wastegate are you running and MOST importantly what spring weight? I had a boosting problem and it was caused by the spring I was using.

mario


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