N/a 20b hits record 475rwhp
Many of you already know the car, but here is a quick overview for those who don't.
20b series C engine, 9.7:1 rotors balanced by CLR, Semi p-port, ceramic apex seals, mazdacomp drysump, Custom inconel header, custom slide throttle intake with mechanically staged peripherals. 3 x id 550cc 3 x id 1000cc 3 x 270cc injectors. Electromotive TEC3R ecu. 5.5 tilton triple disk clutch, taylor flywheel, T5 g-force dogox transmission. Lots of work to get here, and shooting for more over winter! Thanks for everyone supporting us at Defined Autoworks! Check out www. definedautoworks.com for new updates and products. http://i254.photobucket.com/albums/h...gan20bshop.jpg http://i254.photobucket.com/albums/h...0bracecar4.jpg http://i254.photobucket.com/albums/h...a/DSC02077.jpg http://i254.photobucket.com/albums/h...a/DSC02078.jpg Video http://i254.photobucket.com/albums/h...h_IMG_0336.jpg Dyno Chart http://i254.photobucket.com/albums/h...75vsold475.jpg |
What rpm do you have the secondaries staged in at?
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Just using my foot, at half throttle it will begin to open the p-ports. On the dyno I opened them at 5k or so.
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Holy. Fleurking. Schnit.
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Was there something specific you did differently to get the extra 50rwhp? Probably top secret? Congratulations! That is impressive.
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Originally Posted by GSLSE-YA
(Post 10893885)
Was there something specific you did differently to get the extra 50rwhp? Probably top secret? Congratulations! That is impressive.
And thanks! |
congratulations, man! kudos to you. i live vicariously through your every stride (and setbacks, too), but this is truly a testament to your knowledge, skills, time and dedication.
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I have a question regarding the fuel injector arrangement. How do you have the regulator set up, given that some of the injectors spray above the throttles and some below?
I'm contemplating a similar setup, primaries in the stock location, with the secondary injectors spraying into the throttle body, but figuring how to reconcile the regulator has me stumped. I guess I COULD just make sure to stage the injectors when manifold pressure is close to atmospheric, but somehow that still just seems improper. |
You have any more pics of your slide throttle bodies or info on them? That's if you would like to share it of course...
I built a pair myself while while in school for machining as a learning process. But I got stuck at the return spring and TPS set up. Any tips would be a big hep. |
475rwhp 20B n.a? Id never go turbo. Great job
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Originally Posted by diabolical1
(Post 10895450)
congratulations, man! kudos to you. i live vicariously through your every stride (and setbacks, too), but this is truly a testament to your knowledge, skills, time and dedication.
Originally Posted by peejay
(Post 10895680)
I have a question regarding the fuel injector arrangement. How do you have the regulator set up, given that some of the injectors spray above the throttles and some below?
I'm contemplating a similar setup, primaries in the stock location, with the secondary injectors spraying into the throttle body, but figuring how to reconcile the regulator has me stumped. I guess I COULD just make sure to stage the injectors when manifold pressure is close to atmospheric, but somehow that still just seems improper. |
Originally Posted by diabolical1
(Post 10895450)
congratulations, man! kudos to you. i live vicariously through your every stride (and setbacks, too), but this is truly a testament to your knowledge, skills, time and dedication.
Originally Posted by peejay
(Post 10895680)
I have a question regarding the fuel injector arrangement. How do you have the regulator set up, given that some of the injectors spray above the throttles and some below?
I'm contemplating a similar setup, primaries in the stock location, with the secondary injectors spraying into the throttle body, but figuring how to reconcile the regulator has me stumped. I guess I COULD just make sure to stage the injectors when manifold pressure is close to atmospheric, but somehow that still just seems improper.
Originally Posted by sen2two
(Post 10895749)
You have any more pics of your slide throttle bodies or info on them? That's if you would like to share it of course...
I built a pair myself while while in school for machining as a learning process. But I got stuck at the return spring and TPS set up. Any tips would be a big hep. |
good god, that is awesome. it's too bad that torque curve couldn't come up more. are you running pump gas or ???
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Originally Posted by Take-7
(Post 10896589)
good god, that is awesome. it's too bad that torque curve couldn't come up more. are you running pump gas or ???
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I never thought of using an fc tps. The tps use i was going to use cost over 200 dollars each. it was basically just a linear potentiometer similar to ones used on suspension adjustment setups. Ill check out the videos. Thanks.
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Wow!! Congrats on the numbers!! Great job.
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Seriously complaining about the torque curve? ;) Haha. Usually being flat as a pancake all the way out would be incredible, but this is actually gaining torque the whole way up to nearly 9000RPM! Over 225ft/lbs (at the wheels) from pretty much the beginning of the graph. What other engines out there gain 50ft/lbs after 7500rpm. Check out this dyno graph for comparison.
http://www.ultimate-racing.com/Produ...KitNewDyno.jpg This is from a car I used to own,a greddy turbo AP1 S2000. Torque is still slightly lower than this N/A 20B, but a very similar graph. You can see it still tapering off at close to 9000RPM though. These engines will never be torque monsters like high displacement V8s, but what it is making, and especially holding throughout the entire RPM range is very impressive.
Originally Posted by Take-7
(Post 10896589)
good god, that is awesome. it's too bad that torque curve couldn't come up more. are you running pump gas or ???
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The torque is great! It is equivalent to an NA 13B making around 187ft/lbs at the wheels. That is difficult to do.
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Just conjecture here, but what if you guys put some aluminum, higher compression rotors in that bad boy and spun it to 15,000rpm? Bet you would make over 600whp.
Either way, awesome, awesome work. You guys have my business when I'm ready for a 20b. |
Originally Posted by Starfox07
(Post 10897124)
Just conjecture here, but what if you guys put some aluminum, higher compression rotors in that bad boy and spun it to 15,000rpm? Bet you would make over 600whp.
Either way, awesome, awesome work. You guys have my business when I'm ready for a 20b. |
Good stuff. Always nice to see people breaking records with our injectors!
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do want
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What would it cost you up top to get rid of the big dip down low?
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:crickets:
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Originally Posted by TeamRX8
(Post 10901829)
:crickets:
Hope the explanation helps. |
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