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Badger110

Member Since: 06 Feb 2018
Location: South hams
Posts: 1025

2011 Defender 110 Puma 2.4 USW Buckingham Blue

Timing chain replacement

A few before and after pics of items used in the replacement of the 2.4 2011 TDCI timing chain having done 160000 miles.

This is a side by side picture of the new and old chain;

Click image to enlarge

There is a difference in length, although how this is after the new chain has been fitted and run remains to be see ( I'm not taking it back out again! ). I hung both chains up to get the length.

Click image to enlarge

This one is more interesting as it shows the wear on the main guide tensioner. The replacement tensioner guide is a different material to the body, so perhaps Ford were aware of an issue and replaced it themselves.

All parts have been purchased from Turners

25th Mar 2021 10:44am

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3183

2012 Defender 90 Puma 2.2 CSW Santorini Black

May I ask if you also changed the sprockets?
Family member, his 2.4 is close to 150kmiles, and I have suggested to him to plan this service. When I check out the parts for him, I can find a variety of kits, some with sprockets, others with just chains and tensioners.

Do you know what brand Turner supplies?
I can find SKF locally... not sure on chain/sprocket quality, but I rate SKF bearings quite highly.

https://www.vsm.skf.com/ie/en/products/VKML84006 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

25th Mar 2021 10:56am

Badger110

Member Since: 06 Feb 2018
Location: South hams
Posts: 1025

I'm not changing the sprockets, after an investigation, they are in good condition with no obvious signs of wear.

I spent ages trawling through different kits from £110 for a complete chain kit plus sprockets and new timing cover to £675 for the same stuff.

In the end I used Turner as they use all the components on their website in their engine builds, if it's good enough for them, it's good enough for me

25th Mar 2021 6:27pm

Fabio

Member Since: 05 Aug 2011
Location: Somerset
Posts: 589

2011 Defender 110 Puma 2.4 XS CSW Santorini Black

Hi Badger,
How much did you spend in the end and do you have an idea of how much a mechanic will charge for it?
+ or - obviously.
Mine has done nearly 100000miles and I want to try and get that done next year.

Thank you

Fábio

25th Mar 2021 6:31pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3183

Judging from Badger's first photo, the chain is one pin diameter x2 longer than the original.
I do not know what diameter that pin is, but if it was 3mm, that would be a wear of 45microns/roller. So probably difficult to see any wear, if any, on the sprockets.

If there is wear, i think it will be more pronounced on the intake cam sprocket, as there are far less teeth in mesh with the chain. Or maybe this is a wrong assumption. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

25th Mar 2021 8:18pm

Julie

Member Since: 07 Oct 2017
Location: Nantes
Posts: 421

2012 Defender 110 Puma 2.2 SW Keswick Green

^^. "that would be a wear of 45microns/roller. So probably difficult to see any wear, if any, on the sprockets."

... Could this be below production tolerances ?

26th Mar 2021 9:26pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3183

Haahaa

I hope the punch and die that makes the links is a lot more accurate than that. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

26th Mar 2021 9:49pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3183

Has anyone been able to determine chain stretch based on crankshaft and cam shaft position sensor readouts? Probably would need a baseline, but possible to calculate back the stretch on the length of chain between the crankshaft sprocket and the camshaft sprocket? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

3rd Jun 2021 6:36pm

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