On the way home from the statewide club track event this jerk in a van came into my lane as we are clipping along at 80+, and not subtley either. I stabbed fifth, hit the brakes and dove for the ditch. Idiot was reading a map and not even paying attention.

Recovered, drove to my exit. Now, most of my downshifts are grinding. No upshifts but definitely down to fourth and third, second at certain rpms. I took the long way home off the interstate to check what it was doing. Is this the synchros? Clutch related? TIA

(Alen, I asked Bo to check with his Dad to see if his old shop could help, and Bo said Jonathon replaced his synchros at Nothpoint? Can you hook me up with J's number pronto?)

Bart

 

TTT help me out here guys, this has got to go to the shop today.

 

Possibly a syncro, could also be a blocking ring. Sounds to me more like a blocking ring though. You really dont know until you take it apart, Im sure if its never been touched it could use bearings also. The Techs who look at it when its apart will be able to tell you what exactly needs replaced. Hell you might want to throw a clutch in there while your at it if you stock one looks crappy. Good luck man~~~rob

 

thanks for the reply. Could it have something to do with the aftermarket short throw shifter (grasping for an understanding).

 

Normally when you screw up a syncro it is just one gear (each gear cluster has a syncro). My guess is it's not a syncro maybe a blocker. I would check out your shifter also, just a thought.

 

When you say a blocker is that the same thing as a stop?

 

The blocker ring synchronizes' the speed of the free turning gear with the speed of the sliding collar and shaft. With the speeds matching, the collar can then slide easily over the blocker ring and onto the smaller teeth on the gear. All this is done without any gear clash, because the speed of the collar and the gear are the same.

Problems occur when the synchronizer blocker rings or the cone on the side of the gear are worn. Usually this happens in second or third gear, because these gears see the most use. Symptoms include hard shifting or gears grinding. The same symptoms can sometimes occur if a driver tries to shift very slowly into a gear. The force of the synchronizer's blocker ring isn't great enough to slow the gear down, so the sliding collar can't mesh smoothly.

Synchros have to work a lot harder to speed up the gears during a downshift so maybe it is a possibility.

 

what kind of shifter is it?

 

B&M ripper. I don't think it is the shifter though. Just doesn't make sense and this started right after the idiot cut me off. And of course the mechanic couldn't get it to do it. I am getting him to keep it and drive it on the highway tomorrow to try and reproduce the scrunch thing.

I hope it is the clutch (please be the clutch HEHE). Just so it's better. It feels and sounds awful, trust me.