Non Turbo 200whp feat
11-28-07, 09:21 PM
#52
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^ hehe. Thanks Roen. To further rub it in your face here's part of a PM Kahren sent me in response to me getting a scribe template of his 6port templates:
195 whp car used the same templates, stage1,
both intake and exhaust. that car ran out of fuel up top, if it didnt i estimate it would make about 205 whp.
that car did have a t2 intake manifold port matched to a 6 port engine, the results shoudl be similar on the na intake system.
both intake and exhaust. that car ran out of fuel up top, if it didnt i estimate it would make about 205 whp.
that car did have a t2 intake manifold port matched to a 6 port engine, the results shoudl be similar on the na intake system.
11-28-07, 09:23 PM
#53
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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/
11-28-07, 10:51 PM
#55
thats more than what the rx8s r puting out!!! plus that setup doesnt look so expensive. i guess he just knows what hes doing. alot people think its impossible because they couldnt get it done. i searched around the forum and found a couple na streetported 13b's making near or over 200rwhp. why do most people make it seem so impossible?
11-30-07, 11:50 PM
#56
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Since you are not man enough to drive that turbo'ed car during the winter, you can drive my N/A during the winter and I'll drive it.
12-01-07, 12:23 AM
#57
87 Series IV RX7
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i have a NA auto and i reckon its making about 140rwhp at the moment.
It would be easy to get 200rwhp, you just need the money to do it. Cat back exhaust, air intake, and a large streetport or extended port and possibly an ecu.
If you wanna go higher, then bridgeport, new exhaust manifold and bigger fuel pump, bigger secondaries.
It would be easy to get 200rwhp, you just need the money to do it. Cat back exhaust, air intake, and a large streetport or extended port and possibly an ecu.
If you wanna go higher, then bridgeport, new exhaust manifold and bigger fuel pump, bigger secondaries.
12-01-07, 12:47 AM
#58
I've seen a stock port S5 with Racing Beat header to custom single exit exhaust and a CAI put down 175rwhp on the dyno. Stock ecu. Tuning was done by having an adjustable FPR and using SMALLER injectors. (330's from a Miata, IIRC) He was running higher fuel pressure. Motor didn't have AC, PS, or an airpump. All emissions crap was blocked or deleted. Motor had never been opened. I can't see how any properly tuned streetport can't get to 200rwhp, especially if it has the other mods to support it.
Properly tuned...
Properly tuned...
12-01-07, 04:05 AM
#59
Lives on the Forum
12-01-07, 05:54 AM
#60
The easiest way to hit 200+ rear wheel HP in an NA would be to copy someones set up that has done it as closely as possible.
Here is the most detailed example I have found. Yaw power 210RWHP using S5 TII engine and intake manifold w/ mild streetport intake, race exhaust port, high compression NA rotors, fuel only controller.
A total budget build up.
http://www.yawpower.com/sep2004.html
Basically, take your typical 400 RWHP @ 1 bar boost turbo rotary and remove the turbo for 200 RWHP NA rotary :P
Here is the most detailed example I have found. Yaw power 210RWHP using S5 TII engine and intake manifold w/ mild streetport intake, race exhaust port, high compression NA rotors, fuel only controller.
A total budget build up.
http://www.yawpower.com/sep2004.html
Basically, take your typical 400 RWHP @ 1 bar boost turbo rotary and remove the turbo for 200 RWHP NA rotary :P
12-01-07, 11:27 AM
#62
the main reason why its not being done is because nobody knows how to do it. and for that reason, most people think its impossible. this is one of the reason i think this forum needs as n/a section.
12-01-07, 02:08 PM
#63
The mystery of the prize.
Just to throw some more fuel on this sad fire...
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
12-03-07, 05:44 PM
#64
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Just to throw some more fuel on this sad fire...
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
wow peng, you are alive,
i am still trying to hit 190whp with the new manifold
the old one did 180whp
i need to beat the star mazda
12-03-07, 07:11 PM
#66
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Just to throw some more fuel on this sad fire...
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
The "sealed" stock 6 port motors used in the formula mazda pre-renesis race cars put out 185hp with a restricted redline and ignition timing. It's apparently a simple matter of good header, intake, and fueling.
Those are DCOE carbureted arrangements running a star mazda one piece DCOE intake manifold, you could probably also buy the header from star mazda.
Now who wants to guess what porting the motor, raising the redline and going more agressive on the timing is going to do to something that was already producing 185hp?
It's possible, nobody does it because it's stupid / not cost effective. It's not even that people "don't know how", it's that they don't have money and time to just waste on such mediocre results.
Turbocharge or spray the thing already if you just want to go fast on the street for cheap.
12-03-07, 10:35 PM
#67
I was planning on doing a similar build, with the intake and throttle body on tweakit.net, i was wondering if i'd make more power with a 4 port engine, or a 6 port engine though.
I was gonna' try to make as much power as possible without any brideporting at all.
Also, chris ludwig has made 172rwhp on a stockport engine. I think using an rtek.
I was gonna' try to make as much power as possible without any brideporting at all.
Also, chris ludwig has made 172rwhp on a stockport engine. I think using an rtek.
12-04-07, 01:20 PM
#69
The mystery of the prize.
havent messed with the FC for a while though, basically not since I got the R1. What's the point?
12-04-07, 02:15 PM
#70
You *could* do it with an RE engine......
https://www.rx7club.com/showpost.php...38&postcount=3
albeit unfeasible.........you *could*
https://www.rx7club.com/showpost.php...38&postcount=3
albeit unfeasible.........you *could*
12-04-07, 03:27 PM
#71
Seriously, if you can get 172RWHP, out of stock ports on a stock but tuned ecu with the afm still in the way, there is no reason you shouldn't be able to make 200 with good porting and a standalone ems with a good tune.
Good streetport by someone experienced with porting, and possibly a race port exhaust. Plus the intake mani/tb setup from tweakit.net, and then get it tuned, that is my plan.
however, this isn't until after i'm done with my T2 project. That could be a while, lol.
Good streetport by someone experienced with porting, and possibly a race port exhaust. Plus the intake mani/tb setup from tweakit.net, and then get it tuned, that is my plan.
however, this isn't until after i'm done with my T2 project. That could be a while, lol.
12-06-07, 09:45 PM
#72
I was planning on doing a similar build, with the intake and throttle body on tweakit.net, i was wondering if i'd make more power with a 4 port engine, or a 6 port engine though.
I was gonna' try to make as much power as possible without any brideporting at all.
Also, chris ludwig has made 172rwhp on a stockport engine. I think using an rtek.
I was gonna' try to make as much power as possible without any brideporting at all.
Also, chris ludwig has made 172rwhp on a stockport engine. I think using an rtek.
Was stock ECU.
12-06-07, 10:41 PM
#73
Senior Member
Here is a 230 rwhp N/A on 87 Octane - not a street port though
http://www.youtube.com/watch?v=GHfya...eature=related
http://www.youtube.com/watch?v=GHfya...eature=related
Last edited by soloracer951; 12-06-07 at 11:07 PM.
12-06-07, 10:51 PM
#74
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200 to the wheels is a pretty reachable goal for an s4 na. first of all make sure everything is working properly first. you could do methanol injection, mild streetport, and t2 secondaries. go stand alone or rtec 2.0 and i would be surprised if you got less than 190 to the wheels. yo could also throw in a lightened flywheel, and a t2 transmission. this is all assuming you have a engine with good compression. it would be your call if you wanted to tune your car with the methanal or not. even without methanol. my buddy put down 184 to the wheels and all he has is rebuilt injectors, and full racing beat exhaust, and rtec 2.0
12-06-07, 10:58 PM
#75
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from Grassroots Motorsports Magazine - July/August 1995
Article title "Mazda Project RX-7 pg. 49
"Our completed four port 13B features street porting and programmable electronic fuel injection, and makes over 200HP in street trim."
The engine was built by Petit Racing and uses 2 TWM40 mm throttle bodies and a Haltec F3 ECU. They also show photos of the ports that Petit used.
Article title "Mazda Project RX-7 pg. 49
"Our completed four port 13B features street porting and programmable electronic fuel injection, and makes over 200HP in street trim."
The engine was built by Petit Racing and uses 2 TWM40 mm throttle bodies and a Haltec F3 ECU. They also show photos of the ports that Petit used.