Lancia Motor Club Forum Banner
05 December, 2020, 03:24:03 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Need to contact the Forum Administrator? e-mail forum.admin@lanciamc.co.uk, for Database Administrator e-mail database.admin@lanciamc.co.uk      -      Copy deadline for Viva Lancia is 12th of each month.      -      For Events e-mail events@lanciamc.co.uk      -      To Join the club go to http://www.lanciamc.co.uk/join.htm
 
   Home   Help Search Calendar Register  
Pages: [1]   Go Down
  Print  
Author Topic: Fulvia Timing Chain  (Read 1863 times)
0 Members and 1 Guest are viewing this topic.
Charles Frodsham
Senior Member
*****
Posts: 158



« on: 02 October, 2017, 08:41:17 PM »

Does anyone on the forum, or does Lancia, have any guidance or information on how to assess whether the timing chain tensioner does it job correctly, and when it needs replacing?
Thanks
Charles
Logged
roddy
Senior Member
*****
Posts: 168


« Reply #1 on: 04 October, 2017, 07:08:52 PM »

Hello Charles

Part of the timing chain tensioner mechanism, is a curved metal 'shoe' which has its face covered by bonded-on rubber, on which the chain slides.  (The shoe is different between 1300 and 1600 engines).  A new shoe has perfectly flat rubber but after usage, the chain gradually wears away the rubber surface to show grooves corresponding to the pattern of the chain.  As wear increases, particularly at the leading edge of the shoe, the rubber can get thin and start to break away from its metal backing, and eventually the chain will start to wear away the metal part of the shoe in the same pattern.  By this stage the shoe is well past its use-by date and no doubt the chain is suffering too.  Visual inspection should be possible after removing the water pump, which exposes part of the timing chain chest.

Hopefully this answers part of your question, but possibly not it all?

Regards - Roddy   
Logged

Roddy Young
Dunfermline, Fife

1970 Fulvia Sport S1 1.3S
1972 Fulvia Sport 1600
nistri
Megaposter
*
Posts: 338


« Reply #2 on: 05 October, 2017, 11:29:39 AM »

In my own experience the chain stretches a lot before there is large wear of the tensioner shoe. One easy test for chain wear is to see if the static ignition timing is the same for cylinder #1 and 4, Andrea
Logged

Andrea Nistri

Ardea S2
Appia S2
Fulvia GTE
Fulvia Sport 1.3 S
Fulvia Montecarlo
Fulvia Coupe 1.3 S
chriswgawne
Permanent resident
**
Posts: 1659



« Reply #3 on: 05 October, 2017, 12:58:02 PM »

On a 1600 a worn stretched timing chain can jump resulting in valves and pistons making each other's acquaintance.
Chris
Logged

Chris Gawne
Mobile: 07778 216552
lancialulu
Press Officer
Permanent resident
*****
Posts: 4049



« Reply #4 on: 05 October, 2017, 01:20:05 PM »

In my own experience the chain stretches a lot before there is large wear of the tensioner shoe. One easy test for chain wear is to see if the static ignition timing is the same for cylinder #1 and 4, Andrea
That's a neat piece of information. I will look at my 1600s in next few weeks in this regard.
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Jaydub
Megaposter
*
Posts: 277


« Reply #5 on: 06 October, 2017, 09:55:16 AM »

To check timing chain wear on a twin cam, press down on the chain between the cams, and if there is any slack it will show. If it remains taught, all should be fine.
Logged

1600 HF. S2.
Charles Frodsham
Senior Member
*****
Posts: 158



« Reply #6 on: 06 October, 2017, 01:50:53 PM »

Thanks for all the replies.....very much appreciated.

The chain is nice and tight between the cams, so that's a good start. Hopefully will find time tomorrow, whilst it raining, to investigate a little further.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Contact the Forum Administrator

LMC Forum copyright © 2007 - 2018 Lancia Motor Club Ltd

Powered by SMF 1.1.20 | SMF © 2006-2011, Simple Machines
Page created in 0.069 seconds with 20 queries.