 First and Reverse crunch when hot |
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| cal914 |
 Aug 3 2020, 02:21 PM
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#1
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Member  Group: Members Posts: 319 Joined: 12-April 12 From: United Kingdom Member No.: 14,366 Region Association: None  |
I’ve got a gt replica with an original 6 engine and transmission ,when I first get her out of the garage first and reverse go into to gear easy enough but once she’s been driven a while and warms up the only way it will go into these gears is by crunching them ,I have a short shifter fitted and all the other gears are okay ,any one have any ideas
Thanks B |
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| PanelBilly |
Aug 3 2020, 02:33 PM
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#2
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914 Guru Group: Members Posts: 5,805 Joined: 23-July 06 From: Kent, Wa Member No.: 6,488 Region Association: Pacific Northwest 
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I put it in neutral and let the clutch out, then into gear. Seams to work better then
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| ctc911ctc |
Aug 3 2020, 02:44 PM
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#3
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Senior Member Group: Members Posts: 892 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States
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From my very recent experience I would look at, in this order:
1. Clutch disengagement adjustment - since going into Reverse is very different than 1st, could be the engine is still spinning the gears when you have the shifter in neutral and the clutch depressed. 2. Sync Rings for First - though this will explain first, it does not (to me anyway) make sense for reverse. How many miles on the tranny? has it always done this? just started? what changed, etc...... QUOTE(cal914 @ Aug 3 2020, 02:21 PM)  I’ve got a gt replica with an original 6 engine and transmission ,when I first get her out of the garage first and reverse go into to gear easy enough but once she’s been driven a while and warms up the only way it will go into these gears is by crunching them ,I have a short shifter fitted and all the other gears are okay ,any one have any ideas Thanks B |
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| porschetub |
Aug 3 2020, 03:19 PM
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#4
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Advanced Member Group: Members Posts: 4,698 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Could have the wrong oil in the gearbox,it gets warm and thins out too much,worth checking.
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| roblav1 |
Aug 3 2020, 07:11 PM
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#5
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Senior Member Group: Members Posts: 528 Joined: 18-September 12 From: KY Member No.: 14,943 Region Association: MidAtlantic Region |
QUOTE(porschetub @ Aug 3 2020, 05:19 PM) Could have the wrong oil in the gearbox,it gets warm and thins out too much,worth checking. This sounds the most relevant. |
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| thelogo |
Aug 3 2020, 07:14 PM
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#6
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Senior Member Group: Retired Members Posts: 1,510 Joined: 6-April 10 Member No.: 11,572 Region Association: None |
QUOTE(cal914 @ Aug 3 2020, 01:21 PM) I’ve got a gt replica with an original 6 engine and transmission ,when I first get her out of the garage first and reverse go into to gear easy enough but once she’s been driven a while and warms up the only way it will go into these gears is by crunching them ,I have a short shifter fitted and all the other gears are okay ,any one have any ideas Thanks B Hold up guys Are you sure its not clutch cable adjustment Heats up and stretches so doesnt travel enough to let gear enguage. With out grind . Happened to me but on a /4 not /6 |
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