Why me

[shedrool83]

Just my luck on my way back from dopping the kids off i was coming up the gear and at about 4000rpm in 3rd something happened.Got the car home running like a bag of nails.Took the rocker cover off and found this.
So whats my options now,recon head,secondhand head or source a half decent engine?
Feel like torching it.(at the moment)

Just spend £300 getting it through it mot on friday.

Any idea what the costs involved will be to put this right?

[Chase007]

That is a fu*ker

[e301988325i]

That's unlucky my friend. Is the valve seized? Have you tried pushing it down? Will take quite a bit of force but one hand should usually move it.

[Taylor325i]

It's only a broken rocker so don't think it's terminal. As long as there hasn't been any valve to cylinder contact. Heard of people that have replaced them with new ones and head is ok. I'd get it checked out by someone who knows to make sure all is ok before buying new rockers.



Taylor.

[shedrool83]

That's unlucky my friend. Is the valve seized? Have you tried pushing it down? Will take quite a bit of force but one hand should usually move it.

Never tried it.Is it worth removing the cover again to check?

[Alex]

my step dad had the same thing happen in his 325i when we were doing 120mph the actuall part costs a few bob but takes a while to change luckly we know a good mechanic who fixed it for the price of a few pints

[shedrool83]

Since i have owned it the tappets have always been noisy so another head my be the better option.

[e301988325i]

That's unlucky my friend. Is the valve seized? Have you tried pushing it down? Will take quite a bit of force but one hand should usually move it.

Never tried it.Is it worth removing the cover again to check?

Yes, if the valve is seized then the head's coming off at the minimum, if it's not seized then it's just the rocker broken with age or whatever etc, the rockers are relatively cheap but fitting is probably a couple of hours for someone with the right tools. All the best Alex

[Alex]

Since i have owned it the tappets have always been noisy so another head my be the better option.

adjust the tappets?????? that what we did whilst we replaced the tappet

[shedrool83]

Since i have owned it the tappets have always been noisy so another head my be the better option.

adjust the tappets?????? that what we did whilst we replaced the tappet

Tappets have been adjusted only made a slight difference.

[kipper]

thats sucks man...hope you dont blame my part lol..."wiz na me" lol... ..bumper though,, i dont have internal engine parts im afraid but if you need help with anything else just ask pal

[shedrool83]

Na your parts on the cab kipper this happened to the 4 door.
have you found a bumper yet?

[gra325i]

Jake..same thing happened to me couple years back..cost me £250 to get all the rocker arms replaced it is possibe to get a donor set from the scrappy and fit them yourself..its a pain of a job but do-able

[shedrool83]

Jake..same thing happened to me couple years back..cost me £250 to get all the rocker arms replaced it is possibe to get a donor set from the scrappy and fit them yourself..its a pain of a job but do-able

Mind you talking about it Gray,think thats what made me take the cover off.
I'll check and see if the valve is seized tonight.
Still unsure what the best course of actions going to be.

[Mox3d]

If you can lay your hands on a Blue-Point endoscope you could have a good look around inside the cylinder and at the piston top. I'm sorry you're so far away else I'd come out and have a look. It's about the next best option to taking the head off, but, it's likely the head will have to come off anyway I guess.

Bad luck matey. That hurts.

[Brianmoooore]

Chances are it's just a broken rocker, plain and simple.
Back off all the eccentrics that side, or even remove them completely, pull off the locating clips, push loose rockers to the side away from the valves, turn the engine to loosen the rest and push them to the side as well, remove the locking plate near the front of the head, and slide the rocker shaft whichever way is easiest to enable you to replace the broken rocker.
Helps the shaft to slide if the engine is warm.

[murran]

rockers do break with age/fatigue etc. not uncommon at all. especially with uprated cams valve springs.


could get some billet rockers or sumurt??

http://cgi.ebay.co.uk/BMW-M20-Billet-Ra ... 18Q2el1247

big "ouch" in the wallet department tho!

[shedrool83]

That's unlucky my friend. Is the valve seized? Have you tried pushing it down? Will take quite a bit of force but one hand should usually move it.

I can push the spring down but not much.Am i pushing the right bit

[shedrool83]

rockers do break with age/fatigue etc. not uncommon at all. especially with uprated cams valve springs.


could get some billet rockers or sumurt??

http://cgi.ebay.co.uk/BMW-M20-Billet-Ra ... 18Q2el1247

big "ouch" in the wallet department tho!

Those billet's cost more than the car did

[kipper]

kind of.. if he'll pm me back lol

[pacerpete]

The most common reason for a rocker arm breaking is that it is running on a worn cam . You mentioned tappets that couldn't be 'quietened' so i think it is fair to assume the cam is f4cked. No option but head off.

[gra325i]

on the plus side..there are brand new bare shell heads for sale on ebay right now for a mega bargain price..good excuse to rebuild one

[cliffybabe]

dude if it makes u feel better my cab is off the road now due to engine burning oil, this wicked weather and no cab IM gutted

[Jhonno]

Jit is possibe to get a donor set from the scrappy and fit them yourself..its a pain of a job but do-able

why would you bother?! they are old and used, and therefore likely to break again

[shedrool83]

dude if it makes u feel better my cab is off the road now due to engine burning oil, this wicked weather and no cab IM gutted

Sorry to hear that cliffy.
I still have the cab so that will be used when the suns out.
Cab in for mot on friday thou fingers crossed.

[shedrool83]

on the plus side..there are brand new bare shell heads for sale on ebay right now for a mega bargain price..good excuse to rebuild one

Just check it Gray and it had ended for £127

[Brianmoooore]

Jit is possibe to get a donor set from the scrappy and fit them yourself..its a pain of a job but do-able

why would you bother?! they are old and used, and therefore likely to break again

Rubbish! As long as there isn't an underlying reason for the failure, such as cam wear, a used one is probably less likely to break than an old 'de stressed' one. The old one broke (again, as long as there's no underlying reason), because of a slight fault in the metal that's been there since it was made.
The only possible consideration to be taken into account with a used one is the slightly different wear pattern it will have in its contact area with the cam, which may result in the odd high pressure contact point.

[hartgefan]

do it once and do it right,fit a new cam,rockers and shafts,job done

[shedrool83]

do it once and do it right,fit a new cam,rockers and shafts,job done

Think this will be the road i take its going in monday.

[gra325i]

why would you bother?! they are old and used, and therefore likely to break again

well thats what i did 28,000 miles ago, still no problems here..and thats with a chip fitted 25,000 miles ago

Granted if i had my time again i would go for new parts, but this happened to me back in the days before i discovered the zone and it,s wealth of information