Knock/Jerk when upshifting


Cryptoz

New Member
Joined
May 27, 2020
Messages
2
Hello everyone, new here and recently picked up an EK9 with a B18C not too long ago.

Upon upshifting from 1st - 3rd gear there's always a huge knock/jerk when letting the clutch up quickly after an upshift. This can be alleviated with just normal shifting through gears, but when doing quick shifts it doesn't sound so good. This knock/jerk is also produced when letting up the throttle immediately at high RPMs in lower gears. Using a particularly grabby clutch as well - ORC 309D

I suspect it's the engine mounts? Any had this issue?

Timestamped (2:54) link to a video which shows this exact same problem perfectly from an old debut race video in japan with Tsuchiya

Thanks in advance!
 
I've had this issue on mine, feels like the engines rocking when shifting lol , tt was the torque mounts on the front of the car, that bolt from the front of the engine block to the chassis ,the hardened rubber was completely perished, replacing this solved my issue
 
I've had this issue on mine, feels like the engines rocking when shifting lol , tt was the torque mounts on the front of the car, that bolt from the front of the engine block to the chassis ,the hardened rubber was completely perished, replacing this solved my issue
Cheers! Will take a lot at it and probably get it replaced. Glad to know I wasn't the only one with this problem.
 
Back
Top