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PostPosted: Tue May 29, 2018 2:29 pm 
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Joined: Thu Aug 21, 2014 9:50 am
Posts: 36
Location: Victoria, Australia
Car Model: 1974 99LE Combi Automatic
I've got the dreaded chain rattle on my 99, a stretched chain I think because tightening the top chain guide has made no difference to the noise, and along with the oil leaks I think it's engine out time again. I shouldn't complain, the last engine removal was sixteen years ago. The garage will be doing it, but I still need to collect the parts for the job and I need advice. Firstly, should I buy an expensive OEM-spec chain, or a slightly cheaper Japanese chain that has a removable link which will make a future pull-through chain replacement easier? Does the removable link made the chain less durable?


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PostPosted: Tue May 29, 2018 7:52 pm 
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Light Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
Posts: 489
Is this B20 engine with duplex chain?
Never seen a split link chain for this engine but not to say one doesn't exist.
Don't see how you could pull a chain through though as you need to reset the tensioner which can only be accessed with the timing cover removed (engine out).


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PostPosted: Tue May 29, 2018 8:29 pm 
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UKS Addict
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Joined: Tue Oct 30, 2007 9:26 pm
Posts: 5982
Location: North Essex
Car Model: 900Ruby,vert, 9000, 99, Sonett
The duplex chain in B engined, pre-1982 cars can't be changed by feeding through. The duplex chain can only be replaced by removing the engine.

Duplex chain in pre-1982 cars. (Rubbish pics - Sorry)



Image



Single chain as found in H engined post-1983 cars.



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PostPosted: Wed May 30, 2018 12:59 am 
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Joined: Thu Aug 21, 2014 9:50 am
Posts: 36
Location: Victoria, Australia
Car Model: 1974 99LE Combi Automatic
Thanks. Yes, it's a duplex chain. In that case I'll buy the best OEM type I can find. Any recommendations?

I also need to replace the transmission-end crankshaft seal. This can't be done engine-in with the automatic as far as I know, so again the part has to last as long as possible. Should I go for a silicone or polyfluoro rubber seal? There's an Elring seal available in Viton, which is fluoro I think.


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