removing the m30b35 head tommorow for a headgasket change

[BigKriss]

Okay I removed the exhaust manifold, there was still a nut on there. I don't know how I missed it. Almost everything is separated now.



Does the wiring harness need to be separated also. I don't think the bently manual makes a mention of it. I've circled it in yellow.





Nick's coming over tomorrow to help me remove the head.

[Robin-535im]

Does the wiring harness need to be separated also. I don't think the bently manual makes a mention of it. I've circled it in yellow.

Yes, if you're leaving the intake bolted on to the head. If you unbolt the intake I think you can leave the harness where it is. There are some wires that drop down and bolt to the starter, and a few sensor wires that go to the oil pressure and temperature sensors, and of course the fuel injectors.

It's not too bad to take it off, just remember to get all the wires that hang down underneath the intake before you pull on it, it should just lift out after it's all disconnected and the two plated hex bolts are undone from the center of the channel.

[BigKriss]

Thanks Robin, the intake manifold is staying on and I know what to do now.

Yes, if you're leaving the intake bolted on to the head. If you unbolt the intake I think you can leave the harness where it is. There are some wires that drop down and bolt to the starter, and a few sensor wires that go to the oil pressure and temperature sensors, and of course the fuel injectors.

It's not too bad to take it off, just remember to get all the wires that hang down underneath the intake before you pull on it, it should just lift out after it's all disconnected and the two plated hex bolts are undone from the center of the channel.

[BigKriss]

Okay, so the cylinder head was pulled off today.

We couldn't see any cracks in the head. I circled two problem areas Nick said where the coolant could of been leaking.



No visible leaks in the gasket either.

[632 Regal]

looks like some other bad spots starting in other areas too. You should probably have the head tested for cracks just incase.

[genphreak]

I was telling Kriss it'd buff right out but he didn't believe me... actually the pics look worse than it looks in person, but it may not be flat so it needs to be looked at.

Kristian, be sure to mark the cam position and note which valves are open and by how much- just so you can be sure where to put it when she comes back- one should expect they will get it wrong and give it back to you 180 degrees out or something...

Here is the guy I was talking about btw; Balmain Engineering Pty Ltd
154 Victoria Rd Rozelle NSW 2039, just down from the Balmain Leagues Club

[Ferret]

Aiee! This brings back some memories of my first 5!

That head is amazingly clean on the inside.

[The Bigfella]

Ahhh - lots of fun. I hope to crank up the M5 tomorrow after a full engine rebuild. Had a win today - borrowed my son's skateboard to refit the exhaust - which weighs 50kg. Definitely the way to go.

Tomorrow is the oil filter housing, wiring harness, rebuild the plenum (that could be interesting) and the front end coolant bits. Connect the wires and crank.... Note to self - don't forget to put oil in it.

My measuring / machining work was done by Warren at Norwest Engines in Anella Ave, Castle Hill. He's good. I did the build with a mate who was originally trained as a mechanic by the local Rolls Royce agent (he hates Rollers).

Good luck with yours

Ian

[BigKriss]

Replacing some of the fuel hoses on the intake manifold. I just did part 11,

http://realoem.com/bmw/showparts.do?...32&hg=13&fg=15

this is Mercedes Benz fuel hose that I got from BMA from Bill R recommendations. I tried to find the old thread talking about it, but on a quick search I couldn't.

I'm assuming parts 10 and 12 use the same hose, it's quite hard on the car I mean the hose is hard when touching it. Is this right? Hose 14, is that the same as part 11 also? If so I will replace all of them provided from BMA.

In summary, are parts 10, 11, 14 and 15 all the same hose?

And one more question, do any of the 535i guys know what this part's number is;

[BigKriss]

Also how do I prepare the block. I was going to get the gasket debris off with a razor, will this be good enough?