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 > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
kav kav is offline
Registered User
 
Join Date: May 2013
Location: Mill Valley, CA
Posts: 195
Garage
Mystery component on '69 engine.

What is this component called and what does it do? It connects to the rpm transducer on the engine bay wiring and physically to the carb throttle linkage.

1969 911T.



Cheers.

-Kav.
Old 10-12-2016, 03:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
1967 frankenporsch
 
Join Date: Jul 2002
Location: puerto rico
Posts: 1,409
should be a deceleration device for emissions control.
__________________
1967 normale
Old 10-12-2016, 03:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Plays with cars's Avatar
 
Join Date: Nov 2001
Location: Southeast of Seattle
Posts: 421
Garage
Looks similar to the dashpots used on late '60s American muscle car carburetors. The purpose was to slow down the closing of the throttle plates to reduce emissions and propensity to backfire. What's interesting to me though is that this one has an electrical component to it; the ones use by GM were just a dashpot.

Is the electrical circuit a feedback (ie idle switch) to the transducer? Or is it a control circuit using input from the transducer to open/close a valve that controls the vacuum line?
__________________
Mark B
'73 911S (long term ownership) '70 914-6 (long term project) '74 914-2.0 (sold)
Old 10-12-2016, 11:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
kav kav is offline
Registered User
 
Join Date: May 2013
Location: Mill Valley, CA
Posts: 195
Garage
Quote:
Originally Posted by Plays with cars View Post
Looks similar to the dashpots used on late '60s American muscle car carburetors. The purpose was to slow down the closing of the throttle plates to reduce emissions and propensity to backfire. What's interesting to me though is that this one has an electrical component to it; the ones use by GM were just a dashpot.

Is the electrical circuit a feedback (ie idle switch) to the transducer? Or is it a control circuit using input from the transducer to open/close a valve that controls the vacuum line?
That's a good question! The wiring does run to the RPM Transducer. Is it original to the car? Do I need it?

Cheers

-Kav
Old 10-13-2016, 07:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:18 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.