guitarjunkie28

[quote name='Rub20B' date='May 9 2005, 01:33 PM']Indeed, RX-8's are flooding way to much.. If you move the car 3 times in your garage (we don't do that, but there are much people who don't have the knowledge of the rotary engine) you need to A) pull it with another car so it starts and the plugs dry (only for mt's) B) change spark plugs, wich really sucks when you can't move the car up...




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or c) hold it WOT for 2 seconds while cranking....but if you like tow starting, cool.

1Revvin7

[quote name='GMON' date='May 9 2005, 01:38 PM']There were some gains in high end and overall power and some losses in the lower rpms.



Now since your using a tense that indicates you have some numbers for us why dont you post them.


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After a few people post what they think the percentage gain in air flow is I will tell...

j9fd3s

[quote name='GMON' date='May 9 2005, 09:39 AM']Here is how it was explained to me. The laminar air that goes arround the radius of a port sling shots the non laminar air. It makes the air on the inside of the port move faster.



Ever been behind a Ski boat when it makes a turn? For a short time you end up going faster than the boat.



If you need it explained in pistion terms its kinda the same reasoning behind a 3 angle valve job.






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lol, i didnt really get it until we went canoeing last summer. the river flow is almost stagnant on the inside of the turn, it will actually spin the canoe if you let it

Rub20B

[quote name='guitarjunkie28' date='May 10 2005, 01:41 AM']or c) hold it WOT for 2 seconds while cranking....but if you like tow starting, cool.


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Yeah, WOT starting didn't help, I'm not going to put a car in front if I didn't tried to start is with WOT, if the plugs are wet the chance is big you'll need to do it that way..

CletusFD3S

I bet it flows like ****!!!!! nice work

noman17

probably flows 10% more

bill shurvinton

I'll go out on a limb here and say 20%, assuming flow was measured at various stages whilst porting.

j9fd3s

[quote name='guitarjunkie28' date='May 9 2005, 03:41 PM']or c) hold it WOT for 2 seconds while cranking....but if you like tow starting, cool.


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that doesnt work if the cars been really flooded. we did one the other day, the plugs were literally dripping wet

GMON

[quote name='1Revvin7' date='May 9 2005, 03:47 PM']After a few people post what they think the percentage gain in air flow is I will tell...


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For ***** sake el spit it the **** out.



I am very curious to see how flow bench numbers correlate to HP/TQ numbers. My guess is that the ports of a rotary engine are so dynamic that flowing the open port is really no indicator at all of wether or not it will make more power.



Think im crazy? Put a rotor in the housing with the apex seal directly in the center of the exhast port and tell me what flow does.

rfreeman27

[quote name='GMON' date='May 10 2005, 10:33 AM']For ***** sake el spit it the **** out.



I am very curious to see how flow bench numbers correlate to HP/TQ numbers. My guess is that the ports of a rotary engine are so dynamic that flowing the open port is really no indicator at all of wether or not it will make more power.



Think im crazy? Put a rotor in the housing with the apex seal directly in the center of the exhast port and tell me what flow does.


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Exactly. A flowbench is great for heads, but i dont think it will carry as much weight with rotary ports. You could make the port HUGE and have good flow numbers, but make **** for power becase the shape is not detrimental to optimal amounts of overlap and air/fuel charge mixture, etc.