Originally posted by crcn11
Hiya, well I swapped a ZR1 (new one) engine into a Miata / MX5, and the ZR1 gearbox. It was bouncing.
Then I tried a Z06 engine in the Miata / MX5, no gearbox, stopped bouncing.
I know I should have tried the ZR1 engine on it's own instead of the Z06 but I was getting impatient :p
Thanks.