19 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH718 GT4 2nd gear cruch - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Replace 1st / 2nd quickly at high revs
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I intermittently get a crunch when changing 1st / 2nd quickly at high revs.
Leading evidence: 'Replace 1st / 2nd quickly at high revs' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 1st / 2nd quickly at high revs' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Yeah, happened to me a few times, maybe a result of me changing gear too quickly, not sure.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
if a gear is catching at revs on a quick change and you have plenty of clutch clearance/ travel then its the Synchro wearing on the gear, it won't go away and will get worse with use, the fix is a gearbox removal/ strip and replace the ring.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Experienced the same on a test drive and put it down to mistiming clutch/gear change.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
if a gear is catching at revs on a quick change and you have plenty of clutch clearance/ travel then its the Synchro wearing on the gear, it won't go away and will get worse with use, the fix is a gearbox removal/ strip and replace the ring.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
if a gear is catching at revs on a quick change and you have plenty of clutch clearance/ travel then its the Synchro wearing on the gear, it won't go away and will get worse with use, the fix is a gearbox removal/ strip and replace the ring.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
19 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Some guys in the US have reported gear cruching when going from 1st to 2nd.
Some have said that this is part of "running in" and goes after a few miles.
I get this sometimes but am still running in. I find myself being extra cautious when moving to 2nd from 1st.
Anyone experienced this?
Think it is something related to running in.
981 GT4 also had this in lots of cases and then when cars got replacement gearboxes, we had it again with breaking in the new box.
Make a note of it, but it should disappear with more miles. Get out and drive.
TDT said:
Think it is something related to running in.
981 GT4 also had this in lots of cases and then when cars got replacement gearboxes, we had it again with breaking in the new box.
Make a note of it, but it should disappear with more miles. Get out and drive.
thanks, TDT
It’s just that typical syncromesh crunch. Maybe 1 in 15 gear changes I’ll end up doing it. Then just remind myself to be a little more gentle with the gearbox. Only seems to happen 1st to 2nd.
Maybe keep that warranty for a while yet eh?
I’ve had it three times I think in my GTS4.0. I’d put it down in each case to changing gear too quickly, or wondered if I had not quite depressed the clutch enough.
It’s interesting that others are getting this. I’ve done 4500 miles now.
Experienced the same on a test drive and put it down to mistiming clutch/gear change. I did think it was odd as I have never got it wrong in any other car and been driving manuals for 30 years.
Edited by peter777s on Friday 18th December 10:01
How are people getting on with this now their cars have a few more miles on them?
I intermittently get a crunch when changing 1st / 2nd quickly at high revs. No issues on any of the other gears. Clutch is pressed all the way to the floor so that’s ruled out. Only happens with you make a quick change higher in the rev range, a slight delay/pause and it won’t do it however I’d like to know if there’s something that potentially will get worse over time.
Cars been into the OPC however they reported all normal.
Redline88 said:
How are people getting on with this now their cars have a few more miles on them?
I intermittently get a crunch when changing 1st / 2nd quickly at high revs. No issues on any of the other gears. Clutch is pressed all the way to the floor so that’s ruled out. Only happens with you make a quick change higher in the rev range, a slight delay/pause and it won’t do it however I’d like to know if there’s something that potentially will get worse over time.
Cars been into the OPC however they reported all normal.
if a gear is catching at revs on a quick change and you have plenty of clutch clearance/ travel then its the Synchro wearing on the gear, it won't go away and will get worse with use, the fix is a gearbox removal/ strip and replace the ring.
This is a source reference. Confirm exact model applicability in the original material.
