E30 Zone

Evening, Due to circumstances way beyond my control my M30 engined motor has sat with the engine in many pieces for 3 months awating a new head gasket. Anyway, yesterday I put it all back together, have left off the leads and no coolant as Ijust want to spin it. It turned fine by hand. I've charged ...

nah, the few mm around the bores is good, it's beyond the 'metal rings' that the pitting has occured.

I'm verging on the edge of bolting my car back together with a new head gasket, the head's been skimmed and rebuilt at great cost... My block is slightly pitted, especially around cylinder 6. Will this be a problem? (I'm not taking the block out!) will the gasket take up the slack or is there a seal...

haha, I have one, it's been doing a fantastic job of keeping the seagull sh1t off the road surface for two months now....

head gasket.

It will knock out but whatever you do, DON'T put your head in the boot when you hit it with a hammer, your ears will still be ringing a week later...

They seemed competent..

I'll just take it back..

Why do you notice these things AFTER you've done 8 valve clearances......

I've just stared at it for 15mins, the ONLY thing it can be is that the rocker shafts are in wrong, it's only the last 3 rockers on the inlet side that are out but that could be chance... It, just can't be anything else. The top pic is the 3rd rocker, 1 & 2 look the same I'mnot going to be happy if ...

can't be the wrong cam, the engine's done 150k on that cam....

I didn't build this head back up so I don't know if it's right.

the rockers are part no. 1271836 except for:

4&6 on the exhaust and 2, 3 & 6 on the inlet which are 1271836.9

any reason for this?

Just sitting in the living room setting the valve clearances (as you do.) I get to the inlet rockers on 4, 5 & 6 (3 at the back of the engine) and they look different, the rocker isn't central on the tappet. Is this right, it looks wrong, the rocker is up against the little circlip on the cam. M30 3...

anyone?

I'm getting the vibe that the head bolt threads need to be clean

Right. Head is now done. Pressure tested ok to 70psi, took a skim ok, new valve stem seals and valves ground in giving zero loss of vacuum pressure. Now to put it back together and hope it wasn't a cracked block all along... 8O I take it the bores, block surface and head have to be cleaner than an o...

which sparkplugs and oil should I purchase please?

James

I sprayed mine with proper glass paint and it soon started chipping off.

Not worth doing unless you can do it on the inside of the glass.

Spadge, how should I clean the block up, how can I decoke the top of the pistons?, I can still see the hone marks in the block so I really don't want to be messing about down there with files and the like. Just turn the engine and clean the top of the pistons at tdc with a wire brush attachment on ...

chucking new stem seals on and giving it a clean up really isn't that hard. an afternoons work if the head is already off. you can give the valves a re-lap while you're there too for peace of mind what's the testing costing you? Doing this then.... Guide please 8O I've got this far with the zone, d...

well, the head is being pressure tested over the next few days, interesting how they do it actually, pretty old school. IF (big IF) it passes that, then it's going on the 'straightness tester', if it passes that, then a 0.3mm skim and a vacuam test on the valves. (can't rebuild the head, just too mu...

I thought the head bolt channels would be isolated from the oil channels, they were covered in thick black filth. All the heads Ive ever taken off none of the head bolts have been isolated from oil, i assume thats normal. As has already been said the square you used is not a accurate way of checkin...

anyone?

ta.

James

Old oil? hmm

The oil that came out of the sump was very clean. I thought the head bolt channels would be isolated from the oil channels, they were covered in thick black filth.

How do I check the rings. oh no, not more work...

This stuff was blocking 80% of the breather(?) on top of the rocker cover, I've chipped the edge of it it but it's bloomin hard, it's black and honeycomb brown underneath??

Well, after some overheating, the garage tested my coolant and diagnosed head gasket. After getting my head (round one with eyes) in the right place, I've taken the head off (m30 3.5) Can, I say, this was the single hardest thing I've ever done 8O literally no bolts were easy to get at, an absolute ...

Right then...

Will get the head off at some point this week.

Is it likely that the head itself is scrap the garage had a 535 in there with a cracked head and he said BMW straight six are notorious for it?

tdc, that's obvious when you get the covers off? There's an arrow? Does it mean top dead centre, that's a guess by the way! lol I'll get a torque wrench from Halfords tonight then and do my best, I can feel a bit of a cold coming on, far too ill to go to work..... On that guide you leave the chain o...

It's all a bit

though....

Maybe I'll take the head off and get the garage to put it back

How do you lock the engine to stop the timing going out?

Just read that guide, waaaay out of my league.

"The engine should now be rebuilt as it should be run for 25 mins.... .... and the final angle tightening sequence of 35 deg completed using the appropriate bought or home made tool."

Anyone down south want to earn Ã‚£300?

Thanks for the guide Ziggy,

Anyone got a Bentley on CD or a link?

hmm, well now, as the garage is starting to quote Ã‚£7-800 I may have to have a go myself!

I haven't got the ability or the time unfortunately. No idea about timing engines and stuff like that.

Bloody car.

Garage has phoned, it's the headgasket.

Ã‚£450 to fix, I've had the car running for one week, what a great f**king purchase.

Will probably just punt on for parts, can't afford to pour money at a basket case motor.

only got a mile down the road, given up, it's in the garage now.

Well, did as suggested and hopefully it worked, I got heat out of the heater anyway which is a definite improvement on Monday..

Left it dry overnight to set the thermostat liquid gasket, going to fill it with coolant and stick a tin of radweld in to be safe...

Ziggy wrote:They can be a pain to bleed for sure. But mine turned out to be the headgasket in the end...

how much Ã‚£ was it to change?

Search found 204 matches

M30 wont turn over.

Re: Slightly pitted block, can I help it before fitting new

Slightly pitted block, can I help it before fitting new HG.

Re:

Re: ski bag

Re: look, what the hell is the deal with the rockers on my M

Re: look, what the hell is the deal with the rockers on my M

Re: look, what the hell is the deal with the rockers on my M

Re: look, what the hell is the deal with the rockers on my M

look, what the hell is the deal with the rockers on my M30?

Re: Which consumables for a high mile M30 3.5

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

Which consumables for a high mile M30 3.5

Re: Yellow Fogs.?.

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

Re: Got my head off, take a look.. what do you think?

What's this filth in my rocker cover?

Got my head off, take a look.. now the rebuild. crikey.

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....

Re: M30 overheating, air lock or head....