NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   Best overall driver, 12A,13B,20B (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/best-overall-driver-12a-13b-20b-59066/)

Roothawg 05-03-2006 08:15 AM

I am researching which rotary has the best reliabilty, best design etc over the years. I have had several 10B,12A's but never a turbo car or a 13B car. I am building something kinda off the wall. The car will be a 30's styled track roadster with a rotary. If you could pick an all around driver/performer what woul you use and why?



Thanks



Root

j9fd3s 05-03-2006 09:53 AM

the 84-85 gsl-se's rutinely go/went for 200,000+ miles, i can list many many examples with 250+



the 86-91 non turbos are the next most reliable

diabolical1 05-03-2006 11:17 PM

i'd go with an streetported S5 non-turbo engine with exhaust and a custom intake setup.

loudnproud 05-04-2006 01:35 AM

i agree with ^^^ Next best would be the s3 rx7 12a's

heretic 05-08-2006 09:43 PM


Originally Posted by loudnproud' post='817455' date='May 3 2006, 10:35 PM

i agree with ^^^ Next best would be the s3 rx7 12a's



Series 3 12As, in North America at least, had a horrible oil cooler that cooked the dowel pin O-rings and the filter pedestal (now oil cooler) O-rings resulting in massive oil leakage.



This isn't so bad, except for how it leaks directly onto the coolant hoses beneath the oil pedestal. I have seen new heater hoses deteriorate to the point of failure in as little as 6 months, and that on a "mildly" leaky engine. Nothing much good has been said about rapid coolant loss due to hose rupture while at operating temps.

j9fd3s 05-09-2006 10:38 PM


Originally Posted by heretic' post='818107' date='May 8 2006, 07:43 PM

Series 3 12As, in North America at least, had a horrible oil cooler that cooked the dowel pin O-rings and the filter pedestal (now oil cooler) O-rings resulting in massive oil leakage.



This isn't so bad, except for how it leaks directly onto the coolant hoses beneath the oil pedestal. I have seen new heater hoses deteriorate to the point of failure in as little as 6 months, and that on a "mildly" leaky engine. Nothing much good has been said about rapid coolant loss due to hose rupture while at operating temps.



but its lighter and cheaper to make!


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