Mazdaspeed flywheel install with pics...
#26
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If you want to turn your RX8 from a sports car into an exotic, get the flywheel! You will not regret it
Keep the impressions coming cortc.
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If you want to turn your RX8 from a sports car into an exotic, get the flywheel! You will not regret it
#28
About the stock flywheel--Besides the cost, I wonder if maybe they weren't overcompensating in an attempt to keep the rotary from stalling, and the flooding problems that go with that. (Side note: I was moving my car after washing it last weekend, and wanted to warm it up before putting it in the garage. So I gave it a series of revs up to 8k or so...I was really surprised at how slow the throttle response was even under ZERO load...)
Another question--around here, everyone who gets a lightweight flywheel is amazed. With other cars, it doesn't seem that way...like if you made a list of the 10 most popular engine mods, "lighter flywheel" would hardly be mentioned. Does the rotary benefit disproportionally from a lighter flywheel, compared to piston motors?
I guess maybe a flywheel is a smaller portion of the reciprocating mass on a piston motor, because you've got a crank, rods, and pistons that have to be replaced with lighter units too(?). Whereas on a rotary, you just have a couple of rotors and a small eccentric shaft.
Another question--around here, everyone who gets a lightweight flywheel is amazed. With other cars, it doesn't seem that way...like if you made a list of the 10 most popular engine mods, "lighter flywheel" would hardly be mentioned. Does the rotary benefit disproportionally from a lighter flywheel, compared to piston motors?
I guess maybe a flywheel is a smaller portion of the reciprocating mass on a piston motor, because you've got a crank, rods, and pistons that have to be replaced with lighter units too(?). Whereas on a rotary, you just have a couple of rotors and a small eccentric shaft.
Last edited by BaronVonBigmeat; 05-14-2004 at 11:09 PM.
#29
Re: Just get it...
Originally posted by cortc
The only reasons I can come up with of why Mazda did not make this standard is 1) cost 2) they wanted to include it later in a performance model to justify its existence...
If you want to turn your RX8 from a sports car into an exotic, get the flywheel! You will not regret it...:D
The only reasons I can come up with of why Mazda did not make this standard is 1) cost 2) they wanted to include it later in a performance model to justify its existence...
If you want to turn your RX8 from a sports car into an exotic, get the flywheel! You will not regret it...:D
But those are just urban legends.
Have you tried starting in first on an steep incline yet?
#30
actually a lighter flywhell will help prevent flywheel explosion if properly designed. It's lighter weight which is more concentrated twards the center dramatically reduced the centrifugal force on a stock flywheel.
#31
Registered User
Originally posted by BaronVonBigmeat
About the stock flywheel--Besides the cost, I wonder if maybe they weren't overcompensating in an attempt to keep the rotary from stalling, and the flooding problems that go with that. (Side note: I was moving my car after washing it last weekend, and wanted to warm it up before putting it in the garage. So I gave it a series of revs up to 8k or so...I was really surprised at how slow the throttle response was even under ZERO load...)
Another question--around here, everyone who gets a lightweight flywheel is amazed. With other cars, it doesn't seem that way...like if you made a list of the 10 most popular engine mods, "lighter flywheel" would hardly be mentioned. Does the rotary benefit disproportionally from a lighter flywheel, compared to piston motors?
I guess maybe a flywheel is a smaller portion of the reciprocating mass on a piston motor, because you've got a crank, rods, and pistons that have to be replaced with lighter units too(?). Whereas on a rotary, you just have a couple of rotors and a small eccentric shaft.
About the stock flywheel--Besides the cost, I wonder if maybe they weren't overcompensating in an attempt to keep the rotary from stalling, and the flooding problems that go with that. (Side note: I was moving my car after washing it last weekend, and wanted to warm it up before putting it in the garage. So I gave it a series of revs up to 8k or so...I was really surprised at how slow the throttle response was even under ZERO load...)
Another question--around here, everyone who gets a lightweight flywheel is amazed. With other cars, it doesn't seem that way...like if you made a list of the 10 most popular engine mods, "lighter flywheel" would hardly be mentioned. Does the rotary benefit disproportionally from a lighter flywheel, compared to piston motors?
I guess maybe a flywheel is a smaller portion of the reciprocating mass on a piston motor, because you've got a crank, rods, and pistons that have to be replaced with lighter units too(?). Whereas on a rotary, you just have a couple of rotors and a small eccentric shaft.
This means that the same flywheel on a car with 9000 RPM redline vs. a 6500 RPM redline engine will be wasting about twice the power (9000*9000 = 2*6500*6500). Thus every pound saved is twice as important on our RX-8 versus standard engines.
About a year ago I was really surprised to read that the RX-8 used the same diameter clutch/fywheel as the RX-7. With less torque than the RX-7 it really doesn't need a clutch/flywheel that large. (After FI mods, that additional size is going to come in handy however.)
It also appears that our 6-speed is the same design or based on the design of the Mazda EDIT: MX-5 6-speed. I think they forgot or didn't want to spend the developement time to redesign a few components for our high reving engines.
-Mr. Wigggles
Last edited by MrWigggles; 05-15-2004 at 12:11 PM.
#34
Mr Wiggles,
Slight correction. The Mazda 6 is a 5-speed Manual Transmission. Its also mounted sideways (as opposed to front/back) as the Mazda 6 is designed as a FWD or AWD platform.
Just from glancing at the Rx8 tranny photos of the flywheel install...I'd say the 8's transmission is roughly 3-4x the size of the 6's.
Slight correction. The Mazda 6 is a 5-speed Manual Transmission. Its also mounted sideways (as opposed to front/back) as the Mazda 6 is designed as a FWD or AWD platform.
Just from glancing at the Rx8 tranny photos of the flywheel install...I'd say the 8's transmission is roughly 3-4x the size of the 6's.
#35
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crossbow,
I meant the MX-5, but I don't know how accurate that information is.
The lineage of the RX-8's 6 speed is supposed to be derived from another Mazda car. If someone has more info please share.
-Mr. Wigggles
I meant the MX-5, but I don't know how accurate that information is.
The lineage of the RX-8's 6 speed is supposed to be derived from another Mazda car. If someone has more info please share.
-Mr. Wigggles
#37
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The ring gear is built into the stock and Mazdaspeed flywheel... The counter weight is built into the stock and a separate piece on the Mazdaspeed... Usually you only see separate ring gears on aluminum flywheels do to the fact the gears really need to be steel as the aluminum teeth are not very durable; so hence two pieces...
#38
cortc-
Please let me know exactly how long the install took you. my dealer claims the job is at least 5 hours. i'm highly skeptical of this estimate and feel $560 labor is a rip off.
-breezy
Please let me know exactly how long the install took you. my dealer claims the job is at least 5 hours. i'm highly skeptical of this estimate and feel $560 labor is a rip off.
-breezy
#39
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breezy_rx8: The install took 3.5 hours, but it was my and the techs first time with an RX8 and we took our time, and there were a few interuptions... It should have taken 2.5 hours or about U$250.00, that is the most I would pay a shop for installing it...
#40
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Hey cortc, Any special tools required to do the install? I think I am going to get the srmotorsport's aluminum flywheel. It is a little cheaper and a little lighter. But I have not quite decided on that one or the mazdaspeed one.
#43
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Originally posted by cortc
breezy_rx8: The install took 3.5 hours, but it was my and the techs first time with an RX8 and we took our time, and there were a few interuptions... It should have taken 2.5 hours or about U$250.00, that is the most I would pay a shop for installing it...
breezy_rx8: The install took 3.5 hours, but it was my and the techs first time with an RX8 and we took our time, and there were a few interuptions... It should have taken 2.5 hours or about U$250.00, that is the most I would pay a shop for installing it...
I am going to talk with them some more -- I think $800 to $850 max installed price -- given that the install is really 2.5 to 3 hours.
#46
Re: how long is the life on a flywheel?
Originally posted by Hisakata
anyone know how long a flywheel should theoretically last on a flywheel? Sorry for the ignorant question.
Thanks guys.
anyone know how long a flywheel should theoretically last on a flywheel? Sorry for the ignorant question.
Thanks guys.
#47
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If I remember correctly the manual says 4.9 hours, if they told you it took longer they are not being honest go to another dealership... A good tech can do it 2.5 hours easy...
#48
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Re: Counter weight...
Originally posted by cortc
Close-up of the counter weight...
Close-up of the counter weight...
Note: Once the counterweight is installed, the aftermarket flywheel is the same part as the early Turbo RX7.
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#49
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ACTman,
With the following choices:
MT = N3Z1-11-D6X
AT = N3Z2-11-D6X
From the second pic, the 4th letter looks like more like a 2 than a 1.
That would make at least two people who have installed the Mazdaspeed flywheel with the auto counterweight with no problems.
-Mr. Wigggles
With the following choices:
MT = N3Z1-11-D6X
AT = N3Z2-11-D6X
From the second pic, the 4th letter looks like more like a 2 than a 1.
That would make at least two people who have installed the Mazdaspeed flywheel with the auto counterweight with no problems.
-Mr. Wigggles
Last edited by MrWigggles; 05-20-2004 at 04:36 PM.
#50
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Originally posted by MrWigggles
ACTman,
With the following choices:
MT = N3Z1-11-D6X
AT = N3Z2-11-D6X
From the second pic, the 4th letter looks like more like a 2 than a 1.
That would make at least two people who have installed the Mazdaspeed flywheel with the auto counterweight with no problems.
-Mr. Wigggles
ACTman,
With the following choices:
MT = N3Z1-11-D6X
AT = N3Z2-11-D6X
From the second pic, the 4th letter looks like more like a 2 than a 1.
That would make at least two people who have installed the Mazdaspeed flywheel with the auto counterweight with no problems.
-Mr. Wigggles