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GT40 Tech - Powertrain/Transaxles Transaxles and driveline - don't dare post engine things here!

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Old 17th August 2012, 02:02 PM   #1 (permalink)
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Clutch pipe size?

Out of interest, what size clutch pipe have people installed?

I am using a un1 transaxle and full size mustang clutch, so am thinking that 3/16ths might be a bit small.
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Old 17th August 2012, 02:18 PM   #2 (permalink)
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Re: Clutch pipe size?

Actually Jon, 3/16ths (AN-3) should be fine.
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Old 17th August 2012, 03:30 PM   #3 (permalink)
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Re: Clutch pipe size?

I run 3/16 and on fast full power changes the glitch slips for a bit before grabbing.

If I was doing it again I would run 1/4 or have the slave sleeved down so as not to move so much fluid to disengage the clutch fully

Normal road use no problems at all

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Old 17th August 2012, 05:47 PM   #4 (permalink)
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Re: Clutch pipe size?

GTDs used to come with small clutch lines but the general form is now to use a 1/4 inch pipe.
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Old 18th August 2012, 04:37 AM   #5 (permalink)
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Re: Clutch pipe size?

Thanks guys. I think I'm leaning towards 1/4 inch.
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Old 18th August 2012, 05:26 AM   #6 (permalink)
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Re: Clutch pipe size?

I use 1/4"
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Old 18th August 2012, 08:58 AM   #7 (permalink)
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Re: Clutch pipe size?

Its relative to Master Cyl bore size & fluid flow, bigger bore shifts more fluid so therefore requires bigger dia, better to play it safe & use 1/4". More likely to cause problems on clutches with diaphragm during power/high rpm shifts where the diaphragm is held flat or over/center due to centrifugal force.
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