Hey,

I got a 97 turbo miata @ 15psi with a small turbo, on the street the clutch will hold very good and the car drives very hard.
I just got on the dyno yesterday, the the clutch slipped from the first try to do a full swipe, lowering boost to 12psi - didn't help. (very noticeable smell was present)

I had my clutch pedal bump-stop torn, after that the clutch pedal was adjusted in order to have lest dead travel.
All was good, then, I got the pedal bump-stop and installed it, at the first run, the clutch slipped like never before - all the time in low boost. (btw no noticeable smell was present)
The pedal was adjusted again and no slippage !
Could all this have something to do with the dyno slip ?

New clutch ? pedal adjustment ?

If I get a new clutch should I take a light flywheel for a street car or not ? (fm 10lb)

 

Double post

 

I just re'clutched and chose the stock flywheel for Street.
Too light and you can get transmission chatter. Which I understand is not noticeable at14lb. Depending on clutch weight etc.

However I would definitely prefer the added gains. And would have bought a lighter one if I was not forced into an engine swap and had extra funds.

Someone correct me if I'm wrong.

 

That make no sense. If it slips on the dyno in 4th it should slip on the street in 4th and certainly in 5th.

 

Higher gears slip more, since the cars has more resistance. If you're doing dyno pulls in 4th, redline is ~120 indicated. Have you actually done that on the street?

 

On the dyno we run 5th gear (it is a 6spd) for 1:1 ratio, on the street I do not think I tested 5th from bottom to redline...

FM clutch or somthing else ?

It is a dynapack btw

 

If it slips on the dyno it should slip on the street...normally people have the exact opposite thing happen due to the higher load on the street.