Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 914 & 914-6 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: May 2005
Location: so cal
Posts: 2,389
help weird speedo problem

anyone have any idea of whats going on.
I slip in a freshly repaired speedo from NH speedos, one that I can manually verify to be good using a drill in reverse and both speedo and odo are functional

once in the car, a 914 2.0, its a no go on both
with the speedo out,I can see the cable spinning when driving and I cannot hold it with
my leatherman pliers, so cable appears to spinning even under load.

I try 2 more speedos I have that I know and test to be good...still no go....so what the heck?
I'm stumped!
Old 06-06-2014, 06:43 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Nov 2001
Location: Auckland, NZ & Los Angeles, CA
Posts: 462
Garage
Have you replaced the speedo drive recently? If so, you may have replaced it with a 911/912 one which spins the opposite direction and therefore will not give you a reading. I had the exact reverse situation. Was sold a 914 drive instead of a 911 one.
__________________
Kiwi
Reg # 381
1959 356A Conv D
1967 912
1972 911S
Old 06-07-2014, 03:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: May 2005
Location: so cal
Posts: 2,389
thanks Kiwi, I did indeed replace the original leaky drive with one from a 911, will have to see if that will solve it
Old 06-07-2014, 05:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
Quote:
Originally Posted by 914agogo View Post
anyone have any idea of whats going on.
I slip in a freshly repaired speedo from NH speedos, one that I can manually verify to be good using a drill in reverse and both speedo and odo are functional

once in the car, a 914 2.0, its a no go on both
with the speedo out,I can see the cable spinning when driving and I cannot hold it with
my leatherman pliers, so cable appears to spinning even under load.

I try 2 more speedos I have that I know and test to be good...still no go....so what the heck?
I'm stumped!
Good way to destroy a cable .........

The Cap'n
Old 06-07-2014, 08:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Nov 2001
Location: Auckland, NZ & Los Angeles, CA
Posts: 462
Garage
Correct speedo drive

Check the direction - clockwise or anticlockwise - that the cable spins when your 914 is in motion. I bet it's spinning anticlockwise as viewed sitting in the drivers seat. If so you need a 914 speedo drive and it just happens I have one I can sell you for $50.
__________________
Kiwi
Reg # 381
1959 356A Conv D
1967 912
1972 911S
Old 06-08-2014, 05:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: May 2005
Location: so cal
Posts: 2,389
well it was indeed the 911 angle drive that was the problem, not spinning in the right direction.
I know I have a spare somewhere but if I fail to locate one I will drop you a line Kiwi. thanks again
Old 06-08-2014, 05:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Join Date: Nov 2001
Location: Auckland, NZ & Los Angeles, CA
Posts: 462
Garage
Pleased you got it sorted.
__________________
Kiwi
Reg # 381
1959 356A Conv D
1967 912
1972 911S
Old 06-09-2014, 10:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Resident Electrician
 
Mike Bellis's Avatar
 
Join Date: Dec 2009
Location: San Ramon, CA
Posts: 188
Garage
You can also try Mark at Original Customs in Napa, CA. He makes a dual O ring drive that works better than the original.
__________________
Current Project: 73 914, 1.8t, ~300hp, 930 Brakes, Roll Cage
Past Projects:
69 911, converted to C2 wide body cabriolet 3.2L
72 914, Ford 5.0L V8 EFI
Old 06-14-2014, 07:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
Mark's mod addresses the leak between the barrel of the drive and the case, where wear often occurs. Unless you replace the inner seals as well, the leaks there will continue.

The Cap'n
Old 06-15-2014, 07:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 02:49 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.