Just gaped my valves

[2fast]

Took me 6 hrs......Don't laugh.

Good points:
Got to see the inside pretty clean.
Valves 7,9,10,11,12 Had there number's ingraved on them,so they must have had some work done on them???
Found a rip in the corner part of the air tube coming from the air box.
Car is much faster and the exhaust note is way deeper:D

Bad points:
The car had minor ticking before, now it is 10 times worst! I have gaped them to 0.12.
Most of them were tight .09-010
Will adjust to 0.11 if fine in the morning,hope this helps.
One of the bolts have been striped, bolt goes round and round and does not tighten,What are these called, will have to order one from BMW they are closed on the weekend,I have put a drop of thread lock on the end hope it's ok as this is my daily drive.

I turned the motor using the fan nut took sparkplugs out.
Do I have to??or can I leave them in.


Time for a BEER!

[Dash01]

Well, now you have gaping valves! No wonder they're louder.:D

[2fast]

This tick is bad ,shocking.

What gaps you running

[Alan_525i]

If they were tight before, losening them to the proper gap will always make them tick more. You probably have some valvetrain wear that makes them tick. It shouldn't be too bad though.

Taking the spark plugs out makes it much easier to turn as there is no compression.

[Alexlind123]

Took me 6 hrs......Don't laugh.

Good points:
Got to see the inside pretty clean.
Valves 7,9,10,11,12 Had there number's ingraved on them,so they must have had some work done on them???
Found a rip in the corner part of the air tube coming from the air box.
Car is much faster and the exhaust note is way deeper:D

Bad points:
The car had minor ticking before, now it is 10 times worst! I have gaped them to 0.12.
Most of them were tight .09-010
Will adjust to 0.11 if fine in the morning,hope this helps.
One of the bolts have been striped, bolt goes round and round and does not tighten,What are these called, will have to order one from BMW they are closed on the weekend,I have put a drop of thread lock on the end hope it's ok as this is my daily drive.

I turned the motor using the fan nut took sparkplugs out.
Do I have to??or can I leave them in.


Time for a BEER!

You probably need a new eccentric bolt. Eccentrics and their bolts and cheap at BMAparts.com. Always start at one end of the engine and work your way down, that way you dont skip one or anything. After you get to the last valve, go back and recheck all of the others (turning the cam as needed) and readjust them as needed.

I adjust mine by (i think im remembering this right...) squishing the eccentric down on the .012 feeler guage (i think thats the one i squeeze it on to set it to 12) and then checking to make sure the 12 fits in with a little resistance and that 13 does not fit.

If one of the bolts is stripped, that eccentric probably came loose and is making the loud noise. Get a new one. If you need a whole rocker arm, it wil be only like under $7, but it will be alot harder to replace than just the eccentric of eccentric bolt, although i have never performed that repair myself.

I find it surprising that sealing the hole in the boot on the intake would make your car faster, as all it was doing was letting unfiltered air in and not unmetered air.

Good luck! Make sure those banjo bolts are nice and tight (but not too tight). My brother had to get a new spray bar for his M30 because a PO tightened the bolts down too much and squished it. There is a torque spec for almost everything on these cars, and its a good idea to use them.

[2fast]

Thanks for your great replys.

It's not the hole I patched up thats making the car faster,Its the valve adjustment.

Is this possible? I'm sure it not just in my head.;)

[Alexlind123]

Thanks for your great replys.

It's not the hole I patched up thats making the car faster,Its the valve adjustment.

Is this possible? I'm sure it not just in my head.;)

Yes, it is.

[Jay 535i]

Yes, it is.

Yes, it is in his head, or yes, it is possible?

I'm gonna tackle this job myself in a week or two.

[2fast]

Well today I opened her up again I thought I could add an extra washer so the bolt might be able to grip some thread.
Now I can't undo the bolt it just goes round and round both ways!
I did put some thread lock on it but the bolt is just to sick to push past it Nooooooooooooooooo

The eccentric can adjust its self as it sees fit,If it works it way around and close's the valve what will happend?

What do I do, Drill the Bolt off??

This is going from bad to worse.:(

[Alexlind123]

Dont drive it until that bolt is tight.

[2fast]

Too late was driving around last night.

I might have to drive it to my mech,unless someone from this fine board can figure out how to get it off.

The end of the bolt has been worn and it has a 2mm gap,not square (not the nut end) looks like it may have been loose for sometime.

My poor baby,will try and borrow a car for work.

[Alexlind123]

if a valve is too tight, it can burn a valve. If its too loose...i dont really know, but maybe it would just make it run really bad and possibly foul up your O2 sensor and your cat.

[Kalevera]

I'm confused by some of the terminology here.

What bolt or thread is stripped? If it's one of the two oil spray bar banjo bolts, running the car with that loose is potentially starving half (or more) of the cam lobes of oil. No or low oil flow makes for wear on the cam lobes and eccentric pads. Fixing it could be a difficult proposition. I wouldn't want to touch it without removing the head -- tapping or chasing it would have the potential to drop aluminum shavings in the system. Then there's the whole issue of cam wear. Because only the surface of the lobe is hardened, once it's gone, the rest of the surface will deteriorate. BMW now sells an "extra hardened" cam for this reason.

If it's an eccentric bolt that's loose (keyed head fits into the rocker arm, nut secures it on the other side of the arm), the noise is at least partially due to the eccentric flapping around in there and mashing into the valve stem. I would think that the noise would be unbearable, given that anything above about a fixed 14 thou on the M30 causes a racket that resonates through all of that aluminum.

I wouldn't want to drive the car with either issue.

Also, for what it's worth, the only thing visible of the valves on an M30 is the tops of the valve stems. And liquid threadlocker is virtually useless in this application -- it requires clean surfaces to do anything, in an invariably oil covered environment.

Post a picture of the affected bolt?

[2fast]

Sorry don't have a camara.
It's the eccentric bolt,the nut(nut at the end) goes round&round with out tighting or looseing,so I can't get it off to replace it.

[632 Regal]

get a replacement bolt and nut and also pick up a "nut splitter" to get that off.

[2fast]

Phoned up hardware store and the guy has never heard of a nut splitter..Dumb ass.
So I phoned my mech,he said a nut splitter might not fit and said to drill the bolt off,or take it to him.

He's about 20 min drive,but there is a mech 2 mins away by car(never been there).

I would like to fix this myself,not because of the $$ I just don't want this to beat me.

I ordered the parts from BMW The bolt is $2-something and the nut is 70c but the accentric is $10 man that little guy cost alot.

I wish I lived In the states so I could order from where you guys get your parts ,but the shipping to New Zealand out weighs the parts.

I have borrowed my ma's car ,she hates me driving it ,don't know why I'm a good driver ;)

So it looks like Im drilling that sucker off any tips.

[Zeuk in Oz]

I wish I lived In the states so I could order from where you guys get your parts ,but the shipping to New Zealand out weighs the parts.

You might be surprised ! I order from BMA and get parts shipped to Oz in 4 days and it is certainly worth it - much cheaper including the freight.

[2fast]

I got that bolt drilled off on the weekend ,that little bolt was bullet prof,broke two drill bits and slipped and shaved off a bit off the rocker arm not much.
Regaped valve They were much more them.12 so I changed my gapping style.

Car running good no tapping and that exhaust note has gone and it's back to quiet.

Smooth

Sweet as.