[quote name='guitarjunkie28' date='May 7 2005, 09:10 PM']i'm not a photographer.



my idea of coating isn't so much for the wear surface, but heat rejection, to lower expansion. i dunno if it'd work all that well, but it'd be worth a shot.


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maybe thats why they only experimanted with side ports in the 70's

reguardless of the problems they're seeing, they brought the rotary back, so that's something to be happy about. i'm sure they're working on it-even as we speak, so maybe the '06-'07 renesis motors won't have this problem.



i guess you gotta take the good with the bad.

I cant for the life of me figure out why they release the car with 225 NA HP only to find it makes less and the 1st ones out had sticking intake. They started getting badpress right off the bat.

Why would they not have beatin the **** out of these motors for a year or so.Now they are going to have more liability problems and bad reps like the old R100..

R&D needs to fix all this BEFOREit hits the market. FD: vacume lines,IC tank ends,over flow tank, fuel problems, turbo problems on on on on

zoom zoom boom!

BTW nice port...flow must work with all the ports in and out. Please post results.

wouldn't it be great if EVERYTHING were dialed in before a car was released?



EVERY manufacturer goes through this with a new model car...how can you get absolutely everything perfect the first time???



have you ever blown a motor or made some other kind of mistake with the work you've done on your own car? not exactly the same scenario, i'll admit, but i'm glad the rotary is back state-side and i'm sure they'll get everything worked out.



p.s. i'm not really defending the problems because they are there.... i'm just trying be a little more mature about some of the issues and the way they're resolved.

well they dont have to fix everything, but people are wary of the rotary, they should have made the cars at least not flood.... ecu startup tuning is terrible you can smell raw fuel behind the car when you start em. i dont get it either, the fd's really dont flood much, its not like they dont know how to do it https://www.nopistons.com/forums/pub...1047683561.gif

its definetely a fragile car from the factory.......

[quote name='BDC' date='May 7 2005, 09:36 AM']That's true, but that still doesn't answer my question -- how is the sharp edge on the stock port's closing edge detrimental to how the charge flows into the chamber?



B


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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.



https://www.nopistons.com/forums/pub...1047683473.gif

Of course, as you have already pointed out, this can be good or bad depending on what your looking for as a result. Fluid dynamics really suck https://www.nopistons.com/forums/pub...IR#>/smile.png and sometimes they blow

[quote name='1Revvin7' date='May 6 2005, 05:30 PM']Anyhow what do you think the gains were based on these few pictures?


[/quote]





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.

[quote name='j9fd3s' date='May 9 2005, 03:42 PM']well they dont have to fix everything, but people are wary of the rotary, they should have made the cars at least not flood.... ecu startup tuning is terrible you can smell raw fuel behind the car when you start em. i dont get it either, the fd's really dont flood much, its not like they dont know how to do it https://www.nopistons.com/forums/pub...1047683561.gif


[/quote]





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...





An example I had a TII FC wich had stand still for more then a year, car wouldn't start, apexes sticked or something, low compression for sure, I put another car in front, it started after pulling 20m. My sister drives an RX-8 (190hp version), it flooded, It started when pulling, after 700m or so..



I don't know if it's something with the side exhaust ports, but an FD or FC idles way nicer then an RX-8 in my opnion..