Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> Speedo Drive Gear Sealing Modification, ----Now a 914Rubber Product-----
McMark
post Feb 19 2010, 02:05 PM
Post #1


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Attached Image

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.
Attached Image


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.
Attached Image


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.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SirAndy
post Feb 19 2010, 02:53 PM
Post #2


Resident German
*************************

Group: Admin
Posts: 41,602
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
Great idea! (IMG:style_emoticons/default/smilie_pokal.gif)
After years of abuse, the case often is slightly oval allowing for oil to seep by.


A second o-ring should take care of that ...
(IMG:style_emoticons/default/w00t.gif) Andy
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
IronHillRestorations
post Feb 19 2010, 05:26 PM
Post #3


I. I. R. C.
*****

Group: Members
Posts: 6,713
Joined: 18-March 03
From: West TN
Member No.: 439
Region Association: None
VERY COOL!!! You get a gold star McMark!!!!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
whatabout1
post Feb 19 2010, 05:54 PM
Post #4


Toys in Red
**

Group: Members
Posts: 403
Joined: 6-March 06
From: Charlotte, NC
Member No.: 5,676
Region Association: None
PM sent
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Feb 19 2010, 07:11 PM
Post #5


Apex killer!
***************

Group: Members
Posts: 23,552
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California
This looks cool. Mine doesn't leak that I know of but I will keep it in mind...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Sleepin
post Feb 19 2010, 10:14 PM
Post #6


Advanced Member
****

Group: Members
Posts: 3,647
Joined: 20-November 07
From: Grand Junction, Co.
Member No.: 8,357
Region Association: Rocky Mountains
Awesome!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Mar 9 2010, 11:26 PM
Post #7


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
These are now available only as complete rebuilds, all new o-rings, a new internal seal, and a new sealing washer. No compromise, no second guessing, no leaks.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
eyecolor
post Mar 16 2010, 07:16 AM
Post #8


Eyecolor
**

Group: Members
Posts: 80
Joined: 15-August 08
From: Wilmington,DE
Member No.: 9,425
Region Association: None
Count me in

Tell me how to pay and where to send the core

thanks

George
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Mar 16 2010, 11:46 AM
Post #9


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
PayPal: $65 to mark@originalcustoms.com

Core: Original Customs
19660 Eighth St East
Sonoma, CA 95476
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Mar 24 2010, 12:32 PM
Post #10


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Sleepin' posted his experience with the speedo modification. Read about it here.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jflash914
post May 31 2010, 02:39 PM
Post #11


Member
**

Group: Members
Posts: 80
Joined: 24-February 05
From: binghamton,ny
Member No.: 3,652
QUOTE(McMark @ Mar 24 2010, 10:32 AM) *

Sleepin' posted his experience with the speedo modification. Read about it here.


McMark,
Besides removing the set screw what else is needed to remove the speedo drive?? Do you have to remove the back plate of the trans to get the drive shaft out?
Thanks,
Jack
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
BKLA
post May 31 2010, 06:00 PM
Post #12


Really old member
***

Group: Members
Posts: 1,253
Joined: 14-August 05
From: OR
Member No.: 4,590
Region Association: Pacific Northwest
When I removed my speedo drive for my track day car, I machined a plug with two 0 rings with a centered trans temperature probe. Seemed the prudent thing to do.

No leaks!

I never thought of offering a simple modification like this on the speedo drive. Great Idea!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post May 31 2010, 09:22 PM
Post #13


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Jack, once the set screw is removed the speedo drive just pulls out. They can get quite stuck sometimes though. Leaving the angle adapter in place will help give you a place to grab.

Make sure the transmission is drained, or the rear end is HIGH up or the gear oil will drain out all over.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jflash914
post Jun 1 2010, 08:20 AM
Post #14


Member
**

Group: Members
Posts: 80
Joined: 24-February 05
From: binghamton,ny
Member No.: 3,652
QUOTE(McMark @ May 31 2010, 07:22 PM) *

Jack, once the set screw is removed the speedo drive just pulls out. They can get quite stuck sometimes though. Leaving the angle adapter in place will help give you a place to grab.

Make sure the transmission is drained, or the rear end is HIGH up or the gear oil will drain out all over.


Thanks McMark
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Kevins911
post Jun 25 2010, 12:41 PM
Post #15


Member
**

Group: Members
Posts: 52
Joined: 15-July 05
From: Kelowna, B.C.
Member No.: 4,420
Region Association: Canada
Hi Mark, just wondering if you are still making these? I sent you a pm.

Cheers
Kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Jun 25 2010, 01:17 PM
Post #16


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Yes I am. I'm waiting on more seals from Porsche, but as soon as they come in more will be ready to ship.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Ericv1
post Jul 1 2010, 07:21 AM
Post #17


Member
**

Group: Members
Posts: 259
Joined: 30-December 07
From: Cincinnati, Ohio
Member No.: 8,518
Region Association: Upper MidWest
QUOTE(McMark @ Jun 25 2010, 03:17 PM) *

Yes I am. I'm waiting on more seals from Porsche, but as soon as they come in more will be ready to ship.



What's the turn around time? I just degreased my transmission (in the middle of a six conversion) and found it is leaking at the angle drive. Do I need to send the drive gear as well as the housing? Thanks.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Nov 10 2010, 03:33 PM
Post #18


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Turn around time is one day. The only piece I need sent is the piece pictured at the top of this thread. Not the angle drive, not the geared shaft.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SUNAB914
post Dec 24 2010, 06:51 AM
Post #19


Senior Member
***

Group: Members
Posts: 698
Joined: 29-December 08
From: Fredericksburg VA
Member No.: 9,880
Region Association: South East States
Hey I will order one as soon as I get settled in on my move. Be contacting you in Jan.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Mar 29 2011, 04:04 PM
Post #20


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Gear seal kits are now available with the speedo drive for a completely leak free transmission. Seal kits are only $17.50. (IMG:style_emoticons/default/sunglasses.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · Member Vendors · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 19th April 2024 - 04:04 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...