Old Blue 2002 (1974 BMW 2002 Content)

[LJ851]

You may also be able to get a thinner MLS headgasket to restore/boost compression.

[deutschman]

I ordered new stainless steel valves and new valve springs today. No point in getting a 3 angle valve job if the valves are old and nasty.
I also thought of something as fare as the compression goes. When I bring the head in for work I am having it resurfaced which will compensate for the materiel I took out of the chambers.

[deutschman]

anyone that ports for a living wouldnt touch a dremel tool, Its like bringing a knife to a gunfight. How much compression do you think you just ground away? They look shiny!

Yeah I agree. How ever trying things is the best way to learn. It may be expensive, but it works. If I fuck this head up beyond repare I will walk away with a lot of knowledge I did not have before. At least I have the balls to try things my self.
I was wondering the same thing about compression. :-?
It cant be much though. I did not take much off, and the surface area I covered was minimal.
I have done a good amount of reading on DIY head work, and there are a lot of people that do this stuff at home. I think as long as I don't go ape shit removing a lot of metal I will be fine.
I am hoping that polishing the chambers will keep them cleaner, and help with hot spots and detonation. I can run more timing as well.
And yes I had a spare set of valves in while doing the work.
I have the Dremel 4000 which is the largest one they make, and I have to say the thing rips threw metal.
I am going to get a 3 angle valve job, and polish the exhaust ports as well.

[LJ851]

anyone that ports for a living wouldnt touch a dremel tool, Its like bringing a knife to a gunfight. How much compression do you think you just ground away? They look shiny!

[deutschman]

Got a bit of work done today. Started polishing my chambers today. It is FUCKING amazing how quickly you can go threw Dremel bits!!!!! At $3-4 a piece you fly threw cash fast!
I also know why people pay to get head work done. It takes a lot of time and nerves. If you have the money, pay some one ells to do it!
Old chamber.

Polished Chamber.

It is not perfect, but I am really happy with the results right now. Definitely an improvement on the original.
I have 2 done, 4 to go. Dremel will be making money off of me :?

[deutschman]

If we make a aluminum cover for the pedal box we can put rubber seals on the slits for the pedals!

[mr2peak]

Sure thing. I forgot to tape up the holes in my pedal box though, and by the time I got back to SF I was about to throw up. Fucking smoky m10! I can not wait for the m20 to go in!

Hit me up this week, I'll have time to come up with a solution :)

[deutschman]

Thanks! I had a '76 before. It is to bad that he will have to do smog in Cali. It will be a lot easier to pass smog if he changes over to fuel injection.

[e30nub]

Love the progress man! Keep it up. My bro got a '76 not to long ago. He's loving the hell out of it!...watching this thread religously and love your hard work. Great!

[deutschman]

Picked my g240 up at the Swap and Show today. Happy with it. Spins freely and no play in the shaft.

Also got this

And this

And got a lead on a LSD pumpkin from a small case e30 diff for my 2002 diff.
I also won a free 4 wheel alignment at the show raffle.
Good day!!!

[deutschman]

Sure thing. I forgot to tape up the holes in my pedal box though, and by the time I got back to SF I was about to throw up. Fucking smoky m10! I can not wait for the m20 to go in!

[mr2peak]

Looking good man! Thanks for coming on that drive the other night!

[deutschman]

Making a phone call to Tim at Morgan's Machine Shop to see how much a 3 angle valve job and head resurfacing will be. I'm thinking a 30,45,70. I read a thread on e30tech where a guy did a few different angle jobs and he said that that combination works the best for the m20 head.

[deutschman]

I used a 5/8 socket for my S plugs, on m50, and my m42

5/8 was a no go. weird, so i took my head into the tool shop and found out a 21mm deep socket was the tool to use.

[Matt-B]

I used a 5/8 socket for my S plugs, on m50, and my m42