Non Turbo 200whp feat
11-26-07, 08:00 PM
#26
If any of you were at Mazfest the engine I put together for Mariahs ride along/race car for the event made 262 horsepower @ ~7900 to the crank I locked the timing at 24 degrees of advance if I recall correctly. Again this was a heavily ported 4 port (I've built streetable engines that idle at 900 rpm a otay with the same port templates) with 91 NA rotors and a 51mm Berg so it's not exactly what you'd call stock.
If I were to try and do the same on a street car I'd probably build another 4 port engine and strap an SM4 to it.
If I were to try and do the same on a street car I'd probably build another 4 port engine and strap an SM4 to it.
11-26-07, 08:32 PM
#27
If you're using the stock ECU (which requires a stock AFM), it's not going to happen either.
If you're using the stock intake manifolds, it's not going to happen either.
11-27-07, 12:26 AM
#28
^post dyno sheets of cars with these templates and their respective mods. I say this only because I feel like I've taken an n/a to the reasonable limit for a street car and I'd like to see what somebody besides Kahren can do.
anyway, just spray the ************. I want to see another nice nitrous build.
anyway, just spray the ************. I want to see another nice nitrous build.
11-27-07, 04:31 AM
#31
Lets rock.
Join Date: Apr 2004
Location: SLC, Utah
Posts: 1,355
Likes: 0
Received 0 Likes
on
0 Posts
I'd go with a S5 engine. Bridge port with dual carbs and a header would be a good start. However a good friend of mine gave me the best advice of my life. No matter what you do to a N/A engine (short of a PP), a TII with exhaust and a boost controller will beat you any day of the week. Its alot easier to drop a TII engine in your car than to try and pull 200 rwhp out of a N/A.
11-27-07, 04:14 PM
#32
Senior Member
Join Date: Sep 2007
Location: Texas
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
Yeah im thinking about ditching the s4 n/a build idea for my fb...i can get a t2 with trans, ecu and maybe the wiring harness....dont know for sure yet though i need to go talk to the guy and check it out. He used to own a performance shop but it closed down and he is trying to get rid of all his extra motors for cheap.
11-27-07, 04:35 PM
#34
well... just ask kahren. hes super good at making n/a's have power.
a full bridge port will get you where you want, but meh whatever. i think rew plates or re plates would get you where you wanted to go. and a stand alone and a perfect ly designed exhaust.
a full bridge port will get you where you want, but meh whatever. i think rew plates or re plates would get you where you wanted to go. and a stand alone and a perfect ly designed exhaust.
11-27-07, 04:52 PM
#35
Winter sucks
Join Date: Jan 2004
Location: Newberg, Oregon
Posts: 3,083
Likes: 0
Received 0 Likes
on
0 Posts
I talked with Kahren about this.. He made 195rwhp (yes.. WITH dynosheets available in his thread) with STOCK injectors and STOCK ECU... He did, however, have a modified TII LIM, S5 UIM/etc... His ports looked great too.
In my conversation with him, he was confident he could reach 200+rwhp had he used an SAFC and slightly larger secondaries since he was leaning out in the high RPMS.
11-27-07, 04:57 PM
#36
^post dyno sheets of cars with these templates and their respective mods. I say this only because I feel like I've taken an n/a to the reasonable limit for a street car and I'd like to see what somebody besides Kahren can do.
anyway, just spray the ************. I want to see another nice nitrous build.
anyway, just spray the ************. I want to see another nice nitrous build.
11-27-07, 05:37 PM
#37
Winter sucks
Join Date: Jan 2004
Location: Newberg, Oregon
Posts: 3,083
Likes: 0
Received 0 Likes
on
0 Posts
Found Kahren's 195rwhp post:
https://www.rx7club.com/time-slips-dyno-128/na-6port-streetport-dynoed-195whp-update-418805/
https://www.rx7club.com/time-slips-dyno-128/na-6port-streetport-dynoed-195whp-update-418805/
11-27-07, 06:38 PM
#39
Rotary Apprentice
Join Date: Jan 2005
Location: USA
Posts: 2,181
Likes: 0
Received 0 Likes
on
0 Posts
3rd post down in this thread:
https://www.rx7club.com/defined-autoworks-176/customer-dyno-charts-679163/
the engine has since been moved to a GSL-SE, its logans daily driver.
https://www.rx7club.com/defined-autoworks-176/customer-dyno-charts-679163/
the engine has since been moved to a GSL-SE, its logans daily driver.
11-27-07, 08:49 PM
#41
Wish he had a running rx7
Join Date: Nov 2006
Location: Oklahoma City
Posts: 1,180
Likes: 0
Received 0 Likes
on
0 Posts
I take back everything that I said.
https://www.rx7club.com/time-slips-dyno-128/my-1989-na-dyno-quarter-mile-info-702674/
https://www.rx7club.com/time-slips-dyno-128/my-1989-na-dyno-quarter-mile-info-702674/
11-27-07, 11:32 PM
#42
Thats actually mostly incorrect.
I talked with Kahren about this.. He made 195rwhp (yes.. WITH dynosheets available in his thread) with STOCK injectors and STOCK ECU... He did, however, have a modified TII LIM, S5 UIM/etc... His ports looked great too.
In my conversation with him, he was confident he could reach 200+rwhp had he used an SAFC and slightly larger secondaries since he was leaning out in the high RPMS.
I talked with Kahren about this.. He made 195rwhp (yes.. WITH dynosheets available in his thread) with STOCK injectors and STOCK ECU... He did, however, have a modified TII LIM, S5 UIM/etc... His ports looked great too.
In my conversation with him, he was confident he could reach 200+rwhp had he used an SAFC and slightly larger secondaries since he was leaning out in the high RPMS.
11-28-07, 09:34 AM
#45
Here's the full story on the 194-195 whp motor:
S5 motor, Kahren Stage 1 Streetport
Kahren Intake Manifold
Haltech
4 x 550 Injectors
Turns out he shut it off because he was running out of fuel; injectors were going past 85%.
It's weird that we're hearing conflicting stories, I should talk to him next time I see him on AIM to straighten things out.
He thinks he can get to 200 easily with is stage 1 port and his intake manifold, 220 with the stage 2 port and his intake manifold. Those are both wheel power numbers.
BTW, My GTUs currently puts out 170 whp on stock ports.
K&N drop-in filter
RB Collected Header
RB Pre-silencer
RB Catback
Stock Injectors
Rtek7 2.0 (modifying my 6PI actuation RPM and VDI actuation RPM, didn't do much for peak power, but made the curve a little meatier)
200's not that much more of a reach.
11-28-07, 10:50 AM
#46
Winter sucks
Join Date: Jan 2004
Location: Newberg, Oregon
Posts: 3,083
Likes: 0
Received 0 Likes
on
0 Posts
Turns out he shut it off because he was running out of fuel; injectors were going past 85%.
It's weird that we're hearing conflicting stories, I should talk to him next time I see him on AIM to straighten things out.
It's weird that we're hearing conflicting stories, I should talk to him next time I see him on AIM to straighten things out.
11-28-07, 02:36 PM
#49
Full Member
Thread Starter
iTrader: (1)
Join Date: May 2007
Location: Medford
Posts: 73
Likes: 0
Received 0 Likes
on
0 Posts
no
150rwhp tops (you need some more mods).
It is possible to get over 200HP out of the 13B (hell, Mazda racecars made 240HP out of the 10A and 12A) but the key word here is RACECAR, not street car.
My NA made 150whp on stock ports and all the boltons you can imagine. Apparently the streetport posted above yielded 10 more HP than my stock port NA so 200HP doesn't seem like a reasonable goal with a SP.
If you want 200HP street car then get a turbo.
150rwhp tops (you need some more mods).
It is possible to get over 200HP out of the 13B (hell, Mazda racecars made 240HP out of the 10A and 12A) but the key word here is RACECAR, not street car.
My NA made 150whp on stock ports and all the boltons you can imagine. Apparently the streetport posted above yielded 10 more HP than my stock port NA so 200HP doesn't seem like a reasonable goal with a SP.
If you want 200HP street car then get a turbo.
I need a non turbo rx7 that I can drive around and use for a winter beater. I want to make it "Quick."
Originally Posted by .Zero
Wonder why you're asking about a n/a motor when you have a potential badass turbo motor sitting in the garage... unless this isn't who i think it is.