Engine - Transmission - Clutch ?
05-19-12, 06:33 AM
#1
Lotus Centaur/12A Rotary
Thread Starter
Join Date: Apr 2012
Location: Niagara on the Lake Ontario
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Engine - Transmission - Clutch ?
I have a 12A engine (in a kit car), it has the raised H's on the block(s).... I bought a 5 speed transmission from a 12A
I have to order a new clutch, pressure plate and bearing... Would this be a generic purchase...read somewhere about two different clutch sizes?
Would rather order the parts before pulling the engine/transmission, but not if there is a chance of having the wrong parts
(hows that for a newbie question?)
I have to order a new clutch, pressure plate and bearing... Would this be a generic purchase...read somewhere about two different clutch sizes?
Would rather order the parts before pulling the engine/transmission, but not if there is a chance of having the wrong parts
(hows that for a newbie question?)
05-19-12, 10:43 AM
#2
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
You need to match the flywheel and clutch stuff to the transmission.
http://www.mazdatrix.com/g1.htm
All RX-7 12A 5 speeds use the same clutch/flywheel.
http://www.mazdatrix.com/g1.htm
All RX-7 12A 5 speeds use the same clutch/flywheel.
05-20-12, 06:22 AM
#4
Lotus Centaur/12A Rotary
Thread Starter
Join Date: Apr 2012
Location: Niagara on the Lake Ontario
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
....anyone recognize the photo as an 84/85 ... am assuming that is the little vent mentioned in the link? but wasn't sure about the ribbed/smooth casing part?
05-20-12, 09:55 AM
#5
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
That is a 2nd gen S4 transmission, 86-88. Most likely an '87. Bolts up fine to the 12A but you'll need to get the flywheel, clutch, slave, starter from the S4. And the mounts are different, as is tailshaft and transmission length.
05-20-12, 07:10 PM
#6
Lotus Centaur/12A Rotary
Thread Starter
Join Date: Apr 2012
Location: Niagara on the Lake Ontario
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
...so that is the 8 3/4" clutch and the flywheel has to be changed to match? And that would be 2" longer then the first generation one that is in there?
05-21-12, 09:59 AM
#7
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
You're stretching my memory at this point. 
The flywheel diameter between 12A and 13B NA is the same, and I'm fairly sure the clutch disc is the same diameter. However I don't think the flwheel is the same depth. Certainly the starter is in a different position which would indicate the flywheel changed.
Yes, it's something like 2" longer.
The flywheel diameter between 12A and 13B NA is the same, and I'm fairly sure the clutch disc is the same diameter. However I don't think the flwheel is the same depth. Certainly the starter is in a different position which would indicate the flywheel changed.Yes, it's something like 2" longer.
Thread
Thread Starter
Forum
Replies
Last Post