Timing chains: duplex v single

[NETTIE]

OK, based on this expert advice I'll buy duplex. Are the ESM kits made with steel cogs and a chain without a split link?
Who sells the best duplex kit if not ESM?

ESM no complaints good kit my only advice is to buy a descent countersink bit.

[philthehill]

I have no idea about the materials used for the ESM duplex kit, but Kent Cams do a steel duplex kit with non-split link chain. I have used a Kent Cams duplex kit on several engine rebuilds with good results.
If buying a countersink, the angle of the countersink should be 82-degrees as that is what the angle of the UNF countersunk screw requires to sit fully and correctly home. I use a Robert Charles single flute HSS countersink.
If you cannot get an 82-degree countersink a 90-degree countersink will suffice. Use Loctite to secure the two 1/4" UNF countersunk screws.
Here is a Cooper S steel set up (less chain), but you will have to be quick
https://www.ebay.co.uk/itm/255808467998 ... R9q4pJKMYQ

[rocco]

Good spot Phil but I was not quick enough.

[ampwhu]

got mine from mini spares. Genuine for about £50 i think. Fitted it with a tensioner and its almost silent when running.