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Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc...

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Old 11-30-2012, 07:06 PM   #1
RICE RACING
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Exclamation Further info.

Quote:
Originally Posted by Mazdabater View Post
Unless your like me and go bridge for wank factor. WOOOO!
On that note.

On a full length primary and secondary bridge port N/A style with 9.0:1 rotors and big rear housing T51 frame turbo the best figure I personally have recorded is ~270bhp N/A corrected above forumula used (car tested to 1.5bar to derive those figures) peak power at 8250rpm on stock cosmo inlet manifold.

p.s. this piss ant bridges and drill a hole through the water jacket partial/semi PP's LOL you see some "shops" do are a joke and make the lower end or less than a good street port when you separate the FACTS from the BULLSHIT.

So difference of around 7% to specification RR street port. Despite the shit you read on the internet bridge ports are fucking gutless in mid range power boost for boost too. So it is very hard to beat a good street port, and it will work on the street, unlike any of the race porting options. Fuck even on the track it is preferable, just you cant help some dumb asses LOL.

If you are doing it for wank factor, then that is a different story they do sound good

Summary god created turbo's for a reason, use them as intended and keep the engine well mannered and street ported at most, it is all you ever will need in any application with non of the wank factor draw backs
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Old 11-30-2012, 07:14 PM   #2
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Racing Beats full Peripheral Port Turbo's are around that same ~270bhp level btw. But to attain that you need a full open exhaust! not practical even on race tracks. I listed a few of partial pp's in the first post, worst or just a bit over compared to RR street port. so you can see there is not much in it really at end of the day once you have a decent street ported motor.

There is a big gain from small stock ports, but how much power do you want 190 odd bhp level to 240bhp~!
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Last edited by RICE RACING; 12-01-2012 at 04:21 AM.
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Old 12-01-2012, 12:41 AM   #3
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Updated with more figures *directly from dyno tests-rather than trying to remember the numbers!* from various tests I have on hand. Gives a good range of 13B power (@ 1 bar ABS) for various port configurations and turbo set up in various guises...... Compression ratio's listed, all high power (non Jappo or Racing Beat) cars (used only as external comparisons as data is trust worthy) are water injected and tuned the same (as I did them!) so figures are what they are for the engines efficiency. A good maximum street port therefore would suit many people.

Amazing correlation too
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Last edited by RICE RACING; 12-01-2012 at 04:59 PM. Reason: checked over all dyno tests to put down exact figures
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