Dyno'd my car.....
 

Well, still working on the car. Near complete!!

At the dyno today, we found out that the turbo is too small for the engine / exhaust flow.

We are reaching max efficiency at an average 13.6 psi of boost. The boost was jumping around, for the 1.32 AR housing is too small; along with my 46mm wastegate. It jumps between 10 psi and 14.5 psi, but the average is 13.6 when calculate all of the points.

The car reaches 14 psi by 2800 RPM, and it dyno'd at 628 RWHP with the average psi of 13.6.

If I were to slap a larger turbo on there, it would have no problem reaching WAY up. I chose the turbo, thinking it would be good, but was way too small. It is still great for the street/road racing, but there is a balance inbetween, and over the next year I will look into that further with the Acosta team.

Anyhow, still have to do a few more tuning stuff; but I will be driving it home tonight!

Good. God.

Lets see the chart!

Ok. Let me scan it.

Well, it will be awhile. Car is on the lift, and dyno sheets in the car.

where is the car getting dynoed??? by Bullish??? if all goes well marcos sr & the boys will be tunning my 20b by late summer....when is the next tunning session?? maybe i can get some video for the 20b crew on the forum:cool: .....wouldn't u boys love that!!:D

chart,turbo, fuel setup.

be kind to the rest of us. great numbers goodluck holding um down on the street "14 psi by 2800 RPM, and it dyno'd at 628 RWHP"

lets see
 

lets see what set up you running ,turbos ,injectors .,etc

GOOD GRIEF MIKE!!! a 1.32 A/R is to small? I'm running the same a/r on my Garret T-76. PLEASE tell me you are bringing her to RR, I was only hoping for 600whp. I have the HKS 50mm adjustable wastegate with the 1.1 ~ 1.4 bar spring

hhhmmmm , i have a feeling this thread is going to be very interesting.....

Where's the bullcrap meter when I need it. Sorry until I see a dyno sheet I don't think so.

I just got home.

People forget the long drive from NJ to KC. It was a great drive too, it was a nice 1400 mile engine break in. I was very calm, never really going above 5k rpm with boost, but a few higher rpm's in low gears without boost for settlement.

It made it great, with one exception; it overheated in STL area. I was in tears. But, the rotary gods were happy with me. No damage, nothing major.

See, I ran out of time and not everything was completed. I still need to fix the Tach & coolant temps. The Greddy unit I have in the car had lost the sensor, and we tried to wire it to the Microtech sender. Well, the gauge uses different voltage to run properly.

It was due to a faulty wire connection on the fan & radiator. During the drive, the wires stopped touching; and no walla... no fan.

I only caught it before it got worse, because I was tired and was going to take a 30 minute power nap on the side of the road. When I looked at my Greddy water temp, it read lower than normal driving conditions. The car ran at 189f the whole way; which equates to 57c on the messed up voltage & greddy meter. When I noticed it, it was about 20c.

That caught me odd; for it was telling me the engine was cold. I popped the hood, and sizzle sizzzle sizzzzzle. Coolant burning from unknown areas, etc. :(

Fixed the wire, let it cool down, no damage. Everything purs like normal.

I will scan the dyno later today. I am tired, for I have been awake for more than 48 hours straight. I have popped more caffine pills and died mt. dew to last me 2 years.

Oh, Jasil, check your new title.

Yeah, it will be there.

I am out of cash, but need to buy a new wastegate and only hope this helps on the boost control. The 46mm doesn't nearly cut it. The 1.32 ar is restrictive with the ports on the engine.

I am going to look for the HKS, for that seems the next choice.

Originally, I had the double red springs in the TIAL wastegate; making it 1 bar. But, we took out the little one; leaving the 10.XX psi. We were hoping to use this + a manual boost controller to help with the boost. No luck thus far.

Here are a few more things I need to look into:

1) blow off valve. I have an HKS racing one, and at idle, it is like an open hole in my intake pipe. Maybe this is causing weird boost?

2) Vacuum link somewhere since the drive home. You can hear it leaking with the hood open. Ziptie must have poped off.

You're the man....

glad to see you got the car finally running man...good luck

http://home.comcast.net/~mhaun5/rx7/13psiDyno.jpg

Actually, we pulled off of the dyno at 6175 rpm. So, I am sure the 7k rpm dyno number would be 10 or 15 hp higher.

We ended the run early due to the fuel injectors lifting out of the LIM.

The reason you also see the first line & dip was because Marcos started recording the dyno in 3rd gear, before SR. shifted into 4th for the run. This was done because they were missing part of the run due to the very fast rpm spool.

Also, here is the breakout by RPM/RWHP:

3,769 RPM = 195 RWHP
4,092 RPM = 300 RWHP
4,307 RPM = 400 RWHP
4,576 RPM = 500 RWHP
4,845 RPM = 560 RWHP
5,437 RPM = 600 RWHP
6,175 RPM = 628.8 RWHP

As you can see, the 4k RPM band is crazy. Mostly though, the tires just spin.

Have you punched it on the street?

Are you going to get some tires?

Whenever you're ready :)

Right before I came home, there was a red early 90's fox body mustang with a supercharger who I ran.

I have a shitty "make do" bad 5th geared transmission in the car until my guru box arrives this week.

Anyhow, I took him off the "go", and then grinded and missed every gear. Took my time, threw it into 3rd. He was about 2 cars ahead of me. I then flew by him. He was surprised, asking what it would run in the 1/4.

I managed to hook rather well on that get go. Then, my butterflies got stuck open at 4k rpm. I had to shut the car off rolling, and free them. Oh the joys.

MIKE GO AFTER THOSE COBRA NOW. TEACH THEM WHAT A ROTARY CAN DO

Cobras are slow anyways..... you'll have to go from a 90 punch so you don't kill yourself.

men that shit is funny :D ...... its good to be a mod:cool:
i ordered a Garrett GT42R 1.22 A/R thinking it will be OK for my streetported 20b....my first choice was a 1.32 a/r but i felt that would be a over kill for the streets...i dont think i can get the Gt42 with a larger turbine housing than a 1.32:(

Thats what I am thinking of getting but in the 1.32 a/r. Is your porting job big or small? I'm very interested in how this turbo works out for you. How long till it fires up? Please keep us posted.

Red RX-7, those are very impresive numbers, congrats. What turbo is that? What size injectors? C'mon now share a little...

dp

well i mounted the motor & tranny (1st gen rx7) already, ACT clutch & flywheel will be in at the end of the month, fuel lines & pump is mounted i'm waiting on a cell.... i should have it fired up by july if all goes well....

Please post when you get some times and traps out of her. I have yet to see a street driven 3 rotor or for that matter 2 rotor run over 134mph and live to tell about it.

Steve Kan excluded the only other 7 that I saw make a 133mph pass and he backed it up 2x at Houston. Then blew the motor street racing.

Race gas of course.

for some odd reason i dont think (doubt) it will be a problem for mike

That's funny! Now I'm "I wish I had 628rwhp guy"...I'll believe it when I see the times back up the dyno's.

I have been on this forum since 2001 and owned a 7 for 8 months before getting rid of it....and except for the "Great" Steve Kan have yet too see a street driven 7 consistantly run in 130mph range.

It's been 3 years I'm still waiting. Why does my favorite car in the world have such a crappy engine..I don't know.

the engine is not to blame here, it can be as crappy or great as you want it to be ....it totally depends on YOU , just because you cant make it work doesnt mean its crappy , and trust me there are a lot of people out there that you (or me ) dont know about ,that are runnign in the 130mph range , remember you dont know everybody, neighter do i

I was in the car when this happened, I think. He hasn't draggred his car in like 2 years if I'm not mistaken. I still have the video from that night I am thinking about. That night Steve laid the smack down on some Supra's from the 2nd row of cars!!!! If I ever get my hands on a video capture car I'll post the video for you guys. Anyway at the end for NO obvious reason the car sounded like it blew the motor???

Your expectations are way to high. Seriously, you can't expect a little 1.3l engine to triple it's hp and consistantly be perfect under these conditions. Do me a favor and find a similar displacement engine in a street car that meets your requirements?

thank you , thats what i am talking about
everytime its the same shit , ...oooh its crapy...oooh it blew a seal .....why does it have to be so fragile ...please............... if you know what youre doing ,and keep it within reason , it will make power and it will survive , just remember its a 1.3 , you cant expect a 500/600 hp 1.3 to last right not even a piston engine cant do that

that's it mike??? :D :D :D

Just messing with you. I guess I'll come find you when my cym is done and we'll do some highway run. :)

That's why I don't own a 7 anymore! I disagree 100% I've owned and know of 6 street driven dms's and dsm hybrids 2.4's that push over 420awhp and 1 487awhp all on pump.

Stock EVO's with bolt ons are putting out 380awhp and up perfectly reliable.

I still love the car. I just hate the engine, rear, and trans alot. I just want to see progress there doesn't seem like there has been any.

You originally stated that you have yet to see an Rx7 run consistant 130mph and be reliable.

The cars you mentioned above, do they run consistant 130mph trap speeds? I wouldn't think so. You are odviously using a differant set of standards when comparing the piston engines of those cars to rotarys.


Red sorry for getting off topic.

Steve-

You have to give me some credit... I have a turbo that isn't even the size of your two little nut sacks. I mean, hell..... 13psi and the turbo has nothing else to give!

I hear you are going to run a turbo equal to my nuts though, for that: :bigthumb:

Hey Red, did you calulate your gas mileage during the trip?

Man Mike I' so happy for you, I remember us talking about it last year @ RR, I guess it all work'd out in the end. My car is having the manifold, DP and IC piping done as I type, so I'm hoping to have the car up and running by September, I've got all the major stuff less the HALTEC done, just have the little things to do now

John

....

11.76 mpg highway.

Drove near 1400 miles to get home.

lean it out at cruise! you're missing about 8mpg! (i get 19) unless you were cannonballing it the whole way :D

Hey Mike what turbo are you running, I just look'd @ your pics on your site and it looks alot like a Garrett T76 or a T88H, and guess what my turbo is mount'd in the same spot yours is.

Re: Dyno'd my car.....
 

:eek: :eek: :eek: :eek:

11.76 x 20 = 235.2 mpt (Miles per tank)

1400 / 235.2 = Approx 6 fill ups

20 x $2.15 (Going rate of 91 in AZ) = $43

$43 x 6 (Total times filled) = $258


So this is your daily driver right? :D Awesome numbers and attention to detail on your project. I envy your work.

- Jonesie

i gotta comment on "cannonballing" ahhh hahaha and if i get 17-20mpg i would be on cloud9!!! 20mpg to the track, 1mile per gallon at? and 650hp at the turn of a knob (15 psi @ 7k)
what were the air fuel levels and size injectors on the run? 1600cc secondaries?
oh yeah and 20b and good gas milage? should they be in the same sentence

this thread has inspired me to ditch the 13b and go 20b, even thought its about a 15-20k task... it will be well worth it.

Wow, thats a lot of power :eek:

I'm glad your car is up and running. I know you hard "problems" with it in the past with acosta and i'm happy to see it running :)

So whats it feel like driving a 600RWHP+ car?

It is fast. I haven't really driven it much. It has been in the shop getting some electrical goodies put in. I will post pictures Wed. of the finished work.

that jasil guy is a jackass, a shame to the rotary republic :-(