RE-Xtreme FD3s Version II

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carlosrex
Posts: 42
Joined: Tue Nov 20, 2007 9:12 pm
Location: London

Post by carlosrex »

dynamix wrote:Great car and fantastic spec :thumb:

Interesting that you have stuck with standard internals - is there a reason for this?
yep, because you can't uprate the internals :)

You can get a stud kit that holds the engine together a bit better, you can get like ladder bars that go between the sump and block to stiffen things, and you can port the inlet and exhaust. Short of balancing the rotating assembly (which is only needed for 10kRPM +) theres nothing you can do to the internals. No forged pistons (or rotors!) no uprated valves ( because there arent any) no anytihng really.

If you see a 1000hp rotary itll probably have the following engine spec:

3 rotors, balanced crank
700 2000cc injectors (standard injectors are 2x550cc and 2x850cc and they max out at 1 bar boost)
big inlet and exhaust ports
big turbo
2 bar boost

Thatll be it. Seriously, to get more power out of a rotary you just feed more boost in and your engine life expectancy goes down.

lovely rex up there, im desparately in love with the feed widebodys, i would sell my soul for one. However, 1.1 bar on standard turbos and a slightly enlarged IC with standard injectors is really pushing the envelope. I run 1 bar and my injectors hit 100% duty cycle at 7k on cold days, and i can rev to 8400; so can you probably. Get a 1680cc secondary kit in there; dont listen to people a bout 850cc primarys they give you lumpy low end response.

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duncan
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Post by duncan »

I am a complete wankel noob sorry :D

Would it really only take 2 bar of boost (on a big turbo admittedly) to hit 1000 bhp on these?

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RX7
Posts: 5727
Joined: Fri Jul 28, 2006 11:16 am
Location: Norwich

Post by RX7 »

dynamix wrote:I am a complete wankel noob sorry :D

Would it really only take 2 bar of boost (on a big turbo admittedly) to hit 1000 bhp on these?
I guess it is all dependant on the turbo you are bolting on.

But adding the extra rotor really makes a difference also, the Cosmo (big saloon cruiser) uses a triple rotor and you can buy conversion kits (not cheap) to fit this into FDs. There was a guy on MRC who had one fitted into his FD plus a single turbo (cant remember which one) and was pushing over 600 bhp.

Increased tuning can give the engine a very short life expectancy as Carlos says and without correct mapping the engine doesnt last very long indeed !!!
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323ian
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Joined: Fri Jul 28, 2006 10:48 am
Location: Norfolk

Post by 323ian »

What a stunner!
Lovely FD you have got there mate.
Runner Up Top Japanese Car 2007

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