2.5 NA Timing Chain

Rocky09 · Aug 1, 2014

Just been made to look a fool by my garage. I thought my 2.5 NA had a belt but apparently it has a chain.

Is this possible?
I thought it was only 2.25 that had chains?

Does this make a difference to how often they need replacing?

Carrington224 · Aug 1, 2014

The only 2.5's I've worked on had a belt, real easy job to do.

Blackburn · Aug 1, 2014

According to defender manual early 2.5 had a timing chain, looks like 10J version from what I can see.
What does your engine number start with?

Rocky09 · Aug 1, 2014

Blackburn said:
According to defender manual early 2.5 had a timing chain, looks like 10J version from what I can see.
What does your engine number start with?

How could I find out? Its in the garage atm

jamesmartin · Aug 1, 2014

Rocky09 said:
Just been made to look a fool by my garage. I thought my 2.5 NA had a belt but apparently it has a chain.

Is this possible?
I thought it was only 2.25 that had chains?

Does this make a difference to how often they need replacing?

2.5 petrols have chains ,all 2.5 diesels ive ever seen have belts though some fit after market gears

Rocky09 · Aug 1, 2014

Engine number says 12J and it's 1985. Hmm sounds fishy :/

jamesmartin · Aug 1, 2014

chain driven engines have cast iron front cover,belt aluminum

Carrington224 · Aug 1, 2014

jamesmartin said:
2.5 petrols have chains ,all 2.5 diesels ive ever seen have belts though some fit after market gears

Ah ah, I've only worked on doozils.

Rocky09 · Aug 1, 2014

jamesmartin said:
chain driven engines have cast iron front cover,belt aluminum

Well I reckon its aluminium because the garage were sending it off for skimming. Just don't know why they would say it had a chain? Thanks all

Pikey · Aug 1, 2014

Rocky09 said:
Well I reckon its aluminium because the garage were sending it off for skimming. Just don't know why they would say it had a chain? Thanks all

I think you'll find JM is on about The "timing chain/belt cover". Not the cylinder head :doh:

jamesmartin · Aug 1, 2014

Carrington224 said:
Ah ah, I've only worked on doozils.

you dont see many 2.5 petrols ,pity lovely quiet engine

jamesmartin · Aug 1, 2014

Rocky09 said:
Well I reckon its aluminium because the garage were sending it off for skimming. Just don't know why they would say it had a chain? Thanks all

your having head gasket done as well ? head gasket and timing belt are totally seperate jobs unlike most modern engines were you may well change both whilst engines in bits ,but not on a 2.5

Rocky09 · Aug 1, 2014

jamesmartin said:
your having head gasket done as well ? head gasket and timing belt are totally seperate jobs unlike most modern engines were you may well change both whilst engines in bits ,but not on a 2.5

Yeh the cylinder heads cracked so I was advised to get the timing belt looked at too? I thought it would save me a bit seeing as the engine was already in bits?

jamesmartin · Aug 1, 2014

it wont as removing head is as i said nothing to do with the timing belt unlike overhead cam engines,and a cracked head shouldnt be skimmed its pointless heads knackered unless its expertly repaired

samc88 · Aug 2, 2014

Ive got an early 12J in my series (from around 84/ 85) and that has a belt in it

2.5 NA Timing Chain

Rocky09

New Member

Carrington224

Well-Known Member

Blackburn

Well-Known Member

Rocky09

New Member

jamesmartin

Well-Known Member

Rocky09

New Member

jamesmartin

Well-Known Member

Carrington224

Well-Known Member

Rocky09

New Member

Pikey

Dummy Ejection Facilitator..

jamesmartin

Well-Known Member

jamesmartin

Well-Known Member

Rocky09

New Member

jamesmartin

Well-Known Member

samc88

Drivels spiritual representative

Similar threads