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Thread: Early 13B 4 port Racing Beat Holley 390 Man.
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dryenko
1st Gear
Posts: 38
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posted January 19, 2007 06:23 AM |
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Early 13B 4 port Racing Beat Holley 390 Man.
Seeking to purchase a 13B Racing Beat , or other brand, holley flange [390] manifold for the torque ported 4 port 13B in my 1975 REPU.
With or without carb/ aircleaner.
Email me directly @ Dryenko@surry.net
Thanks!!
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klaus42
Rotorhead
Posts: 1877
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posted January 19, 2007 10:17 AM |
Edited By: klaus42 on 19 Jan 2007 10:18
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'Torque ported'?
A header which collects sooner (closer to the housings) will move your powerband towards lower RPM's... the total length of your intake from carb to housing will also alter this charactaristic...
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Brad
Rotorhead
Posts: 1672
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posted January 19, 2007 11:32 AM |
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torque ported
i've heard this referred to streetporting the intake and not porting the exhaust.
but generally the words torque and rotary are not used in the same sentence.
____________
-brad-
74 REPU Lawn Green
81 Rx-7 racecar. 12a J-
Bridge
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dryenko
1st Gear
Posts: 38
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posted January 19, 2007 02:19 PM |
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porting for torque
Of course that is the "common" and oft repeated mantra for the rotary engine.
However, increasing the flow thruput without changing the effective timing of the intake and exhaust charges will, as on any other naturally aspirated engine, increase the BMEP and have a positve effect on engine torque.
This can and has been done, grasshopper..
Think : increase the window port areas without increasing the duration, or the overlap..
Still looking for the holley 4 BBL manifold.
Bob C
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Brad
Rotorhead
Posts: 1672
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posted January 19, 2007 05:20 PM |
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sounds like a port cleanup.
____________
-brad-
74 REPU Lawn Green
81 Rx-7 racecar. 12a J-
Bridge
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klaus42
Rotorhead
Posts: 1877
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posted January 20, 2007 11:33 AM |
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dryenko
1st Gear
Posts: 38
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posted February 16, 2007 04:10 AM |
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kansei
Redlining
Wankelized
Posts: 423
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posted February 16, 2007 03:58 PM |
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Mr. Coffin?
Bob,
I have a RB intake manifold on my REPU right now with what is supposedly a Holley 600. I am looking to get rid of it ASAP and install stock fare. One of my friends here locally has mentioned in the past he wanted it when I take it off, but I'll have to see if he still needs/wants it. Give me a call if you don't find one (616.225.0780).
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Neal A.E. Swigert
Greenville, Michigan
1974 REPU Resto Project
1976 808 Wagon
1977 Cosmo
1978 Savanna RX-7 GT
1980 Leather Sport RX-7
1980 Petty Targa RX-7 #11
1985 GSL-SE RX-7
1988 RX-7 10th Ann
1993 RX-7 VR Touring
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dryenko
1st Gear
Posts: 38
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posted February 16, 2007 05:33 PM |
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RB intake manifold
Thanks Neal, for posting reply.
I am DEFINITELY interested.
Also may still have some of thse parts to trade that you wanted...while i was still in AZ.
And the stock 13B 4 port parts to install that you need to bring back to stock condition.
Bob C
336 366 3376 in NC
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