My 17-cylinder RX8
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My 17-cylinder RX8
Read the whole post in the SE regional forum, if you want to or live in Georgia. The long and short of it is this: in order to test emissions here in Georgia, the tester needed to manually enter the engine data...as a 1.3 L 17-cylinder!!!
This really piques my curiosity. Can anyone think of a technical reason why this could be?
Also, they could not get communications with the OBD to work. The guys at the testing station claim this is the case with testing all '8s this year. They had to test it old-style: probe in the tailpipe and running for so long at such-and-such RPM. (Which made me smile because the max RPM was 3000..."Oh, yeah...you're *really* giving my engine a workout there!")
This really piques my curiosity. Can anyone think of a technical reason why this could be?
Also, they could not get communications with the OBD to work. The guys at the testing station claim this is the case with testing all '8s this year. They had to test it old-style: probe in the tailpipe and running for so long at such-and-such RPM. (Which made me smile because the max RPM was 3000..."Oh, yeah...you're *really* giving my engine a workout there!")
#6
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why would they even have a 17 cylinder option?
sounds like that station has issues. not able to communicate with the diagnostic port? is the place not CAN compatible? why not? someone get charlie/marietta8 in here
sounds like that station has issues. not able to communicate with the diagnostic port? is the place not CAN compatible? why not? someone get charlie/marietta8 in here
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I'm betting the database / software they use only allows them to classify engines by number of cylinders (someone didn't do their research ). So when they realized there was such a thing as a rotary, the easy fix was to put it in a slot where you are sure no piston engine will ever sit (who the hell is gonna build a 17 cylinder engine??).
No clue about the OBDII not working thou
No clue about the OBDII not working thou
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I don't think it's really even possible to make a 17 cylinder engine, I mean.. it IS, but you'd have to make it a straight-17, it's the only way you could get the engine balanced, and such a monster wouldn't fit in anything.
The only large engines I can think of with an odd number of pistons are aircraft radials, and I think the biggest ones ever made only had 9 or 11 cylinders.
whoever made that up and actually put it in the DMV database is one of the stupidest ppl ever
The only large engines I can think of with an odd number of pistons are aircraft radials, and I think the biggest ones ever made only had 9 or 11 cylinders.
whoever made that up and actually put it in the DMV database is one of the stupidest ppl ever
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I don't think it's really even possible to make a 17 cylinder engine, I mean.. it IS, but you'd have to make it a straight-17, it's the only way you could get the engine balanced, and such a monster wouldn't fit in anything.
The only large engines I can think of with an odd number of pistons are aircraft radials, and I think the biggest ones ever made only had 9 or 11 cylinders.
whoever made that up and actually put it in the DMV database is one of the stupidest ppl ever
The only large engines I can think of with an odd number of pistons are aircraft radials, and I think the biggest ones ever made only had 9 or 11 cylinders.
whoever made that up and actually put it in the DMV database is one of the stupidest ppl ever
Just look at the aircraft engines used during WWI. Those were rotary radials,
The only thing is, I really don't think that a 17 cylinder radial (and we're talking single row radial) ever existed. Maybe a three row radial with two rows of five and one of seven cylinders?
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The ironic part is that the RX7 tests fine here in GA...the DMV computer system is savvy to rotaries in those cars.
In retrospect, the cylinder thing must have something to do with timing and the ability to read EMPs. When they tested the car, they put a probe in the tailpipe and laid some type of sensor on the dashboard. The sensor was likely a pickup for engine RPMs. This must mean a 17-cylinder engine would have the same electromagnetic signature as a rotary. This will make good conversation if I should ever meet a 17-cyl engine owner..."Say, did you know..."
In retrospect, the cylinder thing must have something to do with timing and the ability to read EMPs. When they tested the car, they put a probe in the tailpipe and laid some type of sensor on the dashboard. The sensor was likely a pickup for engine RPMs. This must mean a 17-cylinder engine would have the same electromagnetic signature as a rotary. This will make good conversation if I should ever meet a 17-cyl engine owner..."Say, did you know..."
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Actually, there can be rotary engines with cylinders
Just look at the aircraft engines used during WWI. Those were rotary radials,
The only thing is, I really don't think that a 17 cylinder radial (and we're talking single row radial) ever existed. Maybe a three row radial with two rows of five and one of seven cylinders?
Just look at the aircraft engines used during WWI. Those were rotary radials,
The only thing is, I really don't think that a 17 cylinder radial (and we're talking single row radial) ever existed. Maybe a three row radial with two rows of five and one of seven cylinders?
Biggest gasoline powered radial for airplanes was the 28 cylinder (4 banks of 7 pistons) Pratt & Whitney Wasp Major.
The biggest ever was the russian zvezda 42 cylinder radial (6 banks of 7 pistons) diesel boat engine that made 6000 hp I want one of those in my car!
#16
I'm betting the database / software they use only allows them to classify engines by number of cylinders (someone didn't do their research ). So when they realized there was such a thing as a rotary, the easy fix was to put it in a slot where you are sure no piston engine will ever sit (who the hell is gonna build a 17 cylinder engine??).
No clue about the OBDII not working thou
No clue about the OBDII not working thou
#17
I'm betting the database / software they use only allows them to classify engines by number of cylinders (someone didn't do their research ). So when they realized there was such a thing as a rotary, the easy fix was to put it in a slot where you are sure no piston engine will ever sit (who the hell is gonna build a 17 cylinder engine??).
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