Max HP on a 13b ?
#26
Forced induction means that it produces a significant amount of boost, which the NA S5 does not. Nice try though. FYI, the other 13B DEI (Dynamic Effect Intake) engines use a similar effect, as do many other automotive engines that incorporate a Helmholtz resonator or similar inlet effect.
#29
IMO, if you stay NA you don't really need a 2-pc eccentric shaft with center bearing as long as your rotating assembly is properly balanced and race clearanced.
what I would do:
-street ports primary and secondary
-semi peripheral ports on the rotor housings
-custom staged intake manifold to keep secondaries and semi-p ports closed until triggered
-rx-8 rotor gears or other hardened gears
-9.7:1 scalloped, lightened, clearanced and balanced rotating assembly
-2-pc ceramic apex seals
-oil mods (increased pressure, external line, etc)
-cooling jacket mods
-good tuning running premix
you could get or surpass 300 whp this way with a streetable and durable setup
what I would do:
-street ports primary and secondary
-semi peripheral ports on the rotor housings
-custom staged intake manifold to keep secondaries and semi-p ports closed until triggered
-rx-8 rotor gears or other hardened gears
-9.7:1 scalloped, lightened, clearanced and balanced rotating assembly
-2-pc ceramic apex seals
-oil mods (increased pressure, external line, etc)
-cooling jacket mods
-good tuning running premix
you could get or surpass 300 whp this way with a streetable and durable setup
#30
Rotorhead
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Location: Charlottesville, Virginia, USA
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IMO, if you stay NA you don't really need a 2-pc eccentric shaft with center bearing as long as your rotating assembly is properly balanced and race clearanced.
what I would do:
-street ports primary and secondary
-semi peripheral ports on the rotor housings
-custom staged intake manifold to keep secondaries and semi-p ports closed until triggered
-rx-8 rotor gears or other hardened gears
-9.7:1 scalloped, lightened, clearanced and balanced rotating assembly
-2-pc ceramic apex seals
-oil mods (increased pressure, external line, etc)
-cooling jacket mods
-good tuning running premix
you could get or surpass 300 whp this way with a streetable and durable setup
what I would do:
-street ports primary and secondary
-semi peripheral ports on the rotor housings
-custom staged intake manifold to keep secondaries and semi-p ports closed until triggered
-rx-8 rotor gears or other hardened gears
-9.7:1 scalloped, lightened, clearanced and balanced rotating assembly
-2-pc ceramic apex seals
-oil mods (increased pressure, external line, etc)
-cooling jacket mods
-good tuning running premix
you could get or surpass 300 whp this way with a streetable and durable setup
#35
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
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The hill climb motors had a similar setup, but a higher rpm and more tweaks. Horsepower = (torque * rpm) /5252. Therefore, high-rpm engines will produce a lot of horsepower even though they don't have much torque.
#36
this is the reason i asked. it does make sense on paper, but i was curious to see if someone has actually done it yet. i am very aware of what Logan's car did when it had the 20B, but your previous posts assert "13B semi-pp", "get or surpass 300 HP", "streetable", and "durable" as established. and it's not that i doubt any of it is possible, it's just it may be a little bit "cart before the horse."
#38
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SPiN Racing on this forum (although he is mostly on the other forum) has one of the old engines. If you ask, he may send you a picture of the display board that he brought to DGRR. It has a bunch of stats and pictures of the car. It's pretty neat, but unfortunately I don't have any pictures, and I'm also not sure how much information he wants to share on the internet.
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