Problems with z3 2.8is
- Thread starter Tim 2
- Start date
A stretched timing chain on a Z3 is quite unusual, is there a reason why it's happened?
but 
OP is saying exhaust manifold? Not inlet which usually the case Dave.
Tony.
Tony.
That was going to be my question, how do you know it's stretched ?
Slack in a chain is usually the result of a faulty tensioner or slipper guide, which gives the impression that the chain has stretched.
Tony.
Tony.
I did not expect the response right let me get started it started with MoT e every thing was fine then engine management light was on still drive it went back in to garage to find out why something to do with chain tensioner ?like I say I wish I was a good mechanic like that the one on wheeler dealer I think ?some one is going to be pist at this found a load of people in to BM s.I am afraid you got to trust garages when you carmt do it .
You're absolutely right Tim, you do have to build up trust with whoever repairs your car if you can't do it yourself.
Hope they get your car sorted without too much expense. To be honest I would skip the manifold up grade until after the chain job is done. You could well find that the car has more power after the timing is correct again.
Tony.
Hope they get your car sorted without too much expense. To be honest I would skip the manifold up grade until after the chain job is done. You could well find that the car has more power after the timing is correct again.
Tony.
Did they diagnose "slack chain" due to noise at the front of the engine ? If so it could more likely to be a noisy vanos, which is quite a common thing on 2.8 zeds which are now all around 20 years old.
The main timing chain tensioner is self tensioning and does not require attention unless you dismantle it for some reason or other, such as if you have to take the cylinder head off.
You don't need to touch the main timing chain to work on the vanos, but you will expose it so that you can do a thorough examination.
Is your car single vanos or dual vanos? The single vanos engines are fitted to prefacelift zeds but the dual vanos engines have been fitted to cross over cars, ie late refacelift / early facelift, and all facelift zeds. I've never seen a facelift zed with a single vanos 2.8 engine.
A vanos refurb is an easy job for a competent mechanic / DIYer.
The main timing chain tensioner is self tensioning and does not require attention unless you dismantle it for some reason or other, such as if you have to take the cylinder head off.
You don't need to touch the main timing chain to work on the vanos, but you will expose it so that you can do a thorough examination.
Is your car single vanos or dual vanos? The single vanos engines are fitted to prefacelift zeds but the dual vanos engines have been fitted to cross over cars, ie late refacelift / early facelift, and all facelift zeds. I've never seen a facelift zed with a single vanos 2.8 engine.
A vanos refurb is an easy job for a competent mechanic / DIYer.
I wish I was spanners ain't my thing I have a rough idea but a little knowledge is dangerous specially in my hands cheers T
Where are you located Tim?
Tony.
Tony.
Sorry my bad.
Thanks everybody sorry for not replying yesterday house boiler problem s as well ,sorted that one pluse trying to build new place for the BM ,when I get it back so you all can guess things are tight !can any one tell me what adapter plate & were from?if I don't reply I will have crashed for the night all so I am from Brotherton N Yorkshire somebody got to live there thanks T