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> Speedo Drive Gear Sealing Modification, ----Now a 914Rubber Product-----
McMark
post Feb 19 2010, 02:05 PM
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I'm now offering this speedo drive gear modification to help seal one of the more persistent leaks on the 914 transmission. By adding a second, lower o-ring to this part it not only gains a second barrier again leaking, but also helps reduce the vibration that can wear the clearances and cause further leaking.

This part sits inside the transmission tail cone and the angle drive screws into it, then the cable attaches to the angle drive.
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The new internal seal is noticeably smaller on the ID. This means more sealing pressure against the gear shaft, and therefore better sealing against oil leaks.
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Now available HERE from 914Rubber.

This member (Thanks Eric!) had a significant leak at the speedometer, even while parked. After this modification was done... ZERO LEAKS! Read his story here.
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McMark
post Feb 6 2013, 03:38 PM
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Yup. Available at my store.
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john_g
post Feb 7 2013, 11:06 PM
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QUOTE(McMark @ Feb 6 2013, 01:38 PM) *

Yup. Available at my store.


I'm having great difficulties ordering from the store. Please see my PM.
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Posts in this topic
McMark   Speedo Drive Gear Sealing Modification   Feb 19 2010, 02:05 PM
SirAndy   Great idea! :trophy: After years of abuse, t...   Feb 19 2010, 02:53 PM
9146986   VERY COOL!!! You get a gold star McMa...   Feb 19 2010, 05:26 PM
whatabout1   PM sent   Feb 19 2010, 05:54 PM
ConeDodger   This looks cool. Mine doesn't leak that I know...   Feb 19 2010, 07:11 PM
Sleepin   Awesome!   Feb 19 2010, 10:14 PM
McMark   These are now available only as complete rebuilds,...   Mar 9 2010, 11:26 PM
eyecolor   Count me in Tell me how to pay and where to send...   Mar 16 2010, 07:16 AM
McMark   PayPal: $65 to mark@originalcustoms.com Core...   Mar 16 2010, 11:46 AM
McMark   Sleepin' posted his experience with the speedo...   Mar 24 2010, 12:32 PM
jflash914   Sleepin' posted his experience with the speed...   May 31 2010, 02:39 PM
BKLA   When I removed my speedo drive for my track day ca...   May 31 2010, 06:00 PM
McMark   Jack, once the set screw is removed the speedo dri...   May 31 2010, 09:22 PM
jflash914   Jack, once the set screw is removed the speedo dr...   Jun 1 2010, 08:20 AM
john_g   Jack, once the set screw is removed the speedo dr...   Feb 5 2013, 10:23 PM
Kevins911   Hi Mark, just wondering if you are still making th...   Jun 25 2010, 12:41 PM
McMark   Yes I am. I'm waiting on more seals from Pors...   Jun 25 2010, 01:17 PM
Ericv1   Yes I am. I'm waiting on more seals from Por...   Jul 1 2010, 07:21 AM
McMark   Turn around time is one day. The only piece I nee...   Nov 10 2010, 03:33 PM
SUNAB914   Hey I will order one as soon as I get settled in o...   Dec 24 2010, 06:51 AM
McMark   Gear seal kits are now available with the speedo d...   Mar 29 2011, 04:04 PM
pktzygt   Are the drive gear mod and the gear weal kits curr...   Mar 21 2012, 03:56 PM
McMark   Speedo gear mod can go out tomorrow. Trigger whe...   Mar 21 2012, 04:19 PM
euro911   Great mod ... you won't regret doing it   Feb 6 2013, 01:54 AM
john_g   Great mod ... you won't regret doing it T...   Feb 6 2013, 03:18 PM
McMark   Thanks Mark! Didn't even think of using t...   Feb 6 2013, 09:37 AM
john_g   Thanks Mark! Didn't even think of using ...   Feb 6 2013, 03:35 PM
euro911   I'm good for something every now 'n then ....   Feb 6 2013, 03:23 PM
McMark   Yup. Available at my store.   Feb 6 2013, 03:38 PM
john_g   Yup. Available at my store. I'm having gre...   Feb 7 2013, 11:06 PM
HalfMoon   Order sent! Great lil fix, thanks! David B...   Jan 2 2014, 12:51 PM
no1uno   Just ordered speedo drive gear upgrade using webst...   Feb 12 2013, 02:38 PM
maf914   Mark, I placed an order for your speedo drive gea...   Jan 7 2014, 07:17 AM
914_3.0   Just what I need. Off to your store.   Feb 10 2014, 10:42 AM


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