rotary#10

iTrader: (38)

mmm im not sure where to post this but the parts are set for the track.
i have a 91 n/a rx7 with a 12lb racing Beat flywheel and a ACT street and Strip clutch... i have been able to shift well. about 3 smooth shifts today. but some were jerky and Im looking to some advice from the folks here on how to improve on that. Im all open ears

Black91n/a

How are your drivetrain mounts? How about the driveshaft U joints and half shaft CV joints? Slop in the driveline can make it hard to be smooth.

Subarus are bad for that, they use really soft mounts and it's really easy to be jerky with them.

rotary#10

iTrader: (38)

thanks Black91n/a i'll check my hanyes manual and read up on it and check those out tomorrow.

Roen

iTrader: (2)

understand the basics of rev matching both up and down

Black91n/a

That too, but the rest will still help. If the mounts are stock still then they're probably old, oil soaked and weak, sagging or broken anyway, and should be replaced. If you do replace them then I reccomend the Mazda comp ones, they look like stock but are stiffer. You'll notice the extra stiffness, but I don't find that they transmit any more vibrations really.

Roen

iTrader: (2)

Second Mazdacomp,

I have Mazdacomp engine, tranny and front diff mounts......they feel like the same as stock.

rotary#10

iTrader: (38)

thats what im running with on my fc. from mazdatrix i got the comp motor, tranny and rear end.. turns out its just me.. although im getting the better sense of rev matching so as not to over rev the engine. but im getting a better feeling of the car as i drive it more. i guess somethings get better with age... haha but not all..

Roen

iTrader: (2)

practice makes perfect.....the key to smooth shifts is to be as accurate with the throttle as possible, while minimising time on the clutch so that the car downshifts smoothly, as well as being patient but accurate with the clutch on upshifts.

dgeesaman

iTrader: (7)

What aspect of shifting are you looking to improve? Does it grind? Does the shifter not want to slide into the gear you're looking for? Is the car lurching too much? These are all different issues.

Are you holding the shifter **** with correct technique?

Dave

Turbo23

iTrader: (4)

You need a shifter like mine! It will fix all your problems, including cancer.

Black91n/a

I've been thinking of doing that myself, short shifter plus extension rod right? You'd need the short shifter to keep the throws from being too big (maybe smack your hand on the dash).

Extensions are available here: http://miataroadster.com/interior.html

Turbo23

iTrader: (4)

i just used a engine dowel pin on a mazdatrix short shifter. Works great, throw isnt long, and everyone givess me the "wtf" face all the time

jgrewe

iTrader: (1)

Which ACT clutch( model number) do you have? Does it have springs in the disc or is it a puck type? No springs or a four or six puck clutch will force you to work hard at being smooth. Both designs transmit forces NOW and make the clutch feel more like an on/off switch.