rotary engine tuning

[is64fun]

i am not sure whether it is a repost or not but i could not find it in the forums. sorry if it is a repost!

can the rotary engines be tuned easily like the other cars. dou have any link for tuning. can we put a turbo charger for instance

[DUNKiNUTS]

yes there are tuning companys out there, manly look for RX-7 links, turbos are easy on they (stock) and here are some links \/\/

http://www.rx8club.com/index.php?
http://www.rx-7.com/
http://www.pfsupercars.com/

[takata]

yeah, turbo charger can be added like a normal reciprocal engine.

if you prefer NA tuning, the intake / exhaust ports can be ported to give similar gains piston engines get from switching camshafts. various types of porting are available, each to give different aggressiveness.

namely:

extended ports
J ports
bridgeport
monster ports
and the most aggressive of all: peripheral ports

[Wutputt]

It's also possible to add an extra rotor. It's much easier than adding an extra piston on a conventional engine.

[gigdy]

Just remember to watch the temperature.

[PaulGT2164]

rotary motors respond really well to modifications

check out
www.rx-7.com
www.mazdatrix.com
www.corksport.com
www.racingbeat.com

its been dyno proven that just the right exhaust system on a 2nd generation (1987-1990) rx-7 non turbo can yield over 25 hp

there are things like rotor lightening, better apex seals, porting, bridging, and different intake systems that can help. they even sell individual throttle body and weber carb conversion kits for the rotary motors

depending on the year/trim of the car the cooling system needs to be the first up on the list, anything you can do to help cool the engine, like better radiator (i reccomend PWR) and cool the oil (rotarys use oil to lubricate the rotors) can help make a large difference in the reliability of your engine

if you are looking at an rx-7 the best 2nd gen model is the GTUs models, they were essentially the same thing as the turbo II model except minus the turbo, they are lighter than the other model trims, come with the turbo wheels, and the 4.6 rear end gearing and limited slip that the turbos have

the turbo II model is of course the best, and i have seen them push over 400hp with lots of modification (not bad at all for a 80s car)

the best part of the rx-7 is the smoothness, high rpm, awesome handling, and light wieght of the cars

problems with older rx-7s are mainly wiring issues, it seems the mazda factory solder joints are crap and can break free easily resulting in electrical problems, most commonly with the door locks, headlights, and other electrical systems

the main bottleneck in the NA 2nd gen rx-7s in the intake airflow sensor, its this purely retarded plunger push/pull style sensor that causes alot of problems with airflow making it to the engine, the cheap way around this is a "megasquirt" fule computer that can be built or bought for less than 150 bucks

the convertible 2nd gens are nice, have awesome bbs wheels, but are alot heavier and alot slower

:p

[adamk24]

One time a friend of mine in high school who had an 89 rx-7 (non-turbo) locked his rotor in the housing by running it low on oil. He came to school the next day and was telling people his engine blew because the valves came off and fell into the pistons.

[takata]

wat a joke! hahaha

:roll:

[w0n]

Originally Posted by PaulGT2164 rotary motors respond really well to modifications check out www.rx-7.com www.mazdatrix.com www.corksport.com www.racingbeat.com its been dyno proven that just the right exhaust system on a 2nd generation (1987-1990) rx-7 non turbo can yield over 25 hp there are things like rotor lightening, better apex seals, porting, bridging, and different intake systems that can help. they even sell individual throttle body and weber carb conversion kits for the rotary motors depending on the year/trim of the car the cooling system needs to be the first up on the list, anything you can do to help cool the engine, like better radiator (i reccomend PWR) and cool the oil (rotarys use oil to lubricate the rotors) can help make a large difference in the reliability of your engine if you are looking at an rx-7 the best 2nd gen model is the GTUs models, they were essentially the same thing as the turbo II model except minus the turbo, they are lighter than the other model trims, come with the turbo wheels, and the 4.6 rear end gearing and limited slip that the turbos have the turbo II model is of course the best, and i have seen them push over 400hp with lots of modification (not bad at all for a 80s car) the best part of the rx-7 is the smoothness, high rpm, awesome handling, and light wieght of the cars problems with older rx-7s are mainly wiring issues, it seems the mazda factory solder joints are crap and can break free easily resulting in electrical problems, most commonly with the door locks, headlights, and other electrical systems the main bottleneck in the NA 2nd gen rx-7s in the intake airflow sensor, its this purely retarded plunger push/pull style sensor that causes alot of problems with airflow making it to the engine, the cheap way around this is a "megasquirt" fule computer that can be built or bought for less than 150 bucks the convertible 2nd gens are nice, have awesome bbs wheels, but are alot heavier and alot slower :p

damn your knowledged, is your passion just rotaries?
i myself am buying my first car soon and was thinking a series I, II or III(1st gen) and modding it with a 13b street portand maybe more (depending on money) what do u think? i am able to by a Series VI or V (2nd gen) but their to fat for my liking what series is the "turbo II" and "GTU" models? as i am from australia it might not have been sold down here...

[Sir_GT]

Thanks for this mates. My wife's been keen on the RX-8 as our first car, and I really didn't fancy something with such low low-end torque.

Just out of curiousity, what was the most gained from a stock rotary engine? BHP and torque wise?

[gobs3z]

If you run out of gas in RX-7 your engine is done for, don't know if it's the same with the Rx-8.

[papaSMURF]

ok, anyone who wants an rx7 for their first car is a dumbass, and anyone who wants one as a dialy driver is a dumbass as well. ive gone through the paces with the tt 13b, and its a simple PIA. youll do so much and spend a LOT more than normal to net like 50hp, while running the HUGE risk of having your engine die on ya.

when gobs was talking about gas, he was most likely talking about my seven after a year of tuning and modifications, it was done, so we took it out for some 1/4mi fun, then the car wouldnt idle....

wow nothing like blowing 6k on a motor only to have it crap out on ya a couple thou miles later because mazda doesnt know how to properly design a gas tank!

if you have a daily driver like myself, and have extra cash to have something sit in the garage forever, by all means, please buy an rx7!

[Sir_GT]

Originally Posted by papaSMURF ok, anyone who wants an rx7 for their first car is a dumbass, and anyone who wants one as a dialy driver is a dumbass as well. ive gone through the paces with the tt 13b, and its a simple PIA. youll do so much and spend a LOT more than normal to net like 50hp, while running the HUGE risk of having your engine die on ya. when gobs was talking about gas, he was most likely talking about my seven after a year of tuning and modifications, it was done, so we took it out for some 1/4mi fun, then the car wouldnt idle.... wow nothing like blowing 6k on a motor only to have it crap out on ya a couple thou miles later because mazda doesnt know how to properly design a gas tank! if you have a daily driver like myself, and have extra cash to have something sit in the garage forever, by all means, please buy an rx7!

If that's the same problem with the RX-8, then I think we'll wait for the new 3 series.

[papaSMURF]

gas tank im sure they figured out how to fix them. but the new engine is a bit better, not worlds better as people claim. gas mileage is on par with a car that has over 300hp still, and is inefficent as it ever was. but once warrenty is up on a rotary, i say ditch it, rebuilds will cost you much more than the car is worth in the end (say 4 years from now) and performance wise, theres not much u can get out of the rotary without comprimising something else (reliability, street manners etc) BUT i will say that yes the rotary is AMAZING when spun to 10k+ (balanced etc engines will easily do this) and sounds sick.

3 series has a better engine, rx8 looks a bit cooler, but if your gunna keep it in the long run, please do go for the bmw