smoothdurban
I do my own stunts
- Joined
- Jan 4, 2013
- Location
- Kemble Ontario
Hey Guys
I am trying to determine what may be causing some blocked downshifting issues I have been recently experiencing
The set up:
Volvo 240 - B230FT
Master Cylinder - Centric PN 136.39000 (1 YO)
Slave Cylinder - Centric PN 136.39002 (new and fully bled)
Clutch Fork - Standard Fork from a 740 hydro setup Shimmed
Flywheel / Clutch Yoshifab Billet Flat Flywheel FX250 Clutch
Trans - Tremec T5 newish
Adapter -DeeWorks
Fluid -Tremec HP-MTF
The issue:
Occasionally when trying to downshift from 4th to 3rd I am unable to make the shift. It almost feels like something is blocking it. I have to re-engage into 4th then try again.
This seems to only occur when it is hot out (+30?C / 85?F) and I have been driving for a while. It also only seems to happen at lower engine speeds. Mostly prevalent when downshifting as you would when coming to a stop. High speed downshifts do not seem to be a problem.
Once I had this condition when downshifting from 5th to 4th. I have never experienced it in any other order (3rd -2nd, 2nd - 1st) Upshifts are all smooth and complete without issue.
I do not have any grinding when upshifting into any gears. Nor is there any grinding when shifting into reverse.
The issue is not easy to replicate and sometimes it occurs repeatedly where other times it is completely fine.
I have about 0.8" of slave cylinder travel and the pivot ball on the clutch fork is shimmed out quite a bit (don't know the exact measurement) but the fork isn't perpendicular to the slave, it is angled slightly forward.
When the system is at rest I can push the slave in about another 1/4" so it isn't bottomed out.
My thoughts are I am not fully disengaging the clutch and I need to shim the pivot ball forward a bit more (mil or two) but I don't want to overtravel the release bearing to the pressure plate.
I was curious if anyone else has experienced something similar.
I am trying to determine what may be causing some blocked downshifting issues I have been recently experiencing
The set up:
Volvo 240 - B230FT
Master Cylinder - Centric PN 136.39000 (1 YO)
Slave Cylinder - Centric PN 136.39002 (new and fully bled)
Clutch Fork - Standard Fork from a 740 hydro setup Shimmed
Flywheel / Clutch Yoshifab Billet Flat Flywheel FX250 Clutch
Trans - Tremec T5 newish
Adapter -DeeWorks
Fluid -Tremec HP-MTF
The issue:
Occasionally when trying to downshift from 4th to 3rd I am unable to make the shift. It almost feels like something is blocking it. I have to re-engage into 4th then try again.
This seems to only occur when it is hot out (+30?C / 85?F) and I have been driving for a while. It also only seems to happen at lower engine speeds. Mostly prevalent when downshifting as you would when coming to a stop. High speed downshifts do not seem to be a problem.
Once I had this condition when downshifting from 5th to 4th. I have never experienced it in any other order (3rd -2nd, 2nd - 1st) Upshifts are all smooth and complete without issue.
I do not have any grinding when upshifting into any gears. Nor is there any grinding when shifting into reverse.
The issue is not easy to replicate and sometimes it occurs repeatedly where other times it is completely fine.
I have about 0.8" of slave cylinder travel and the pivot ball on the clutch fork is shimmed out quite a bit (don't know the exact measurement) but the fork isn't perpendicular to the slave, it is angled slightly forward.
When the system is at rest I can push the slave in about another 1/4" so it isn't bottomed out.
My thoughts are I am not fully disengaging the clutch and I need to shim the pivot ball forward a bit more (mil or two) but I don't want to overtravel the release bearing to the pressure plate.
I was curious if anyone else has experienced something similar.
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