BMW E30 Chromie Rebuild Supercharged

[Rav335uk]

Go for it!

Small update.
Picked this up yesterday.
E30 handbrake handle covered in Alcantara.

[milano_red]

Awesome build man!

Makes me want to tear apart my motor

[Rav335uk]

Bought the car from Colchester about 2 yrs ago.

[Marc_Fells]

Hey man, awesome build thread.
Later on in the year I want to get a spare engine and do a full rebuild on it (325)
Where did you buy the car from to start with? Looks like the one I was offered last year sometime.

[Rav335uk]

Not much of an update, but cleaned up the inlet ports after getting the head back from Byron, and then test fitted the ITB's

[Rav335uk]

And a few more,
That'll be it till next week when I get the head back.
Then i'll try the Stainless Steel 6 branch and see what needs to be done to make it fit.

[image]

Cant find now his build thred....

here also you can see this car on some videos

http://www.youtube.com/user/mariuszd2000

[Rav335uk]

Got any other pics of the E30 side on?

[image]

Hartge's looks very good on clean mt1 ^^

Some pic for example and just to motivate you

[herrakani]

Cool build, yay for clean parts!

[600whp s4]

Love this build

[Rav335uk]

Tonights little teaser.

[Rav335uk]

"Followed by a 30* top cut, then the seat cut, both are on a double sided cutter. The seat cut is at 46* the two faces will bed in together within the first moments of the engine being started."

What do you mean by bed in together??

Hi,
The 45* angle is cut on the valve, the 46* in the seat within the head. This is called an "interference fit". It means that the valve has a contact patch towards the outer edge of the valve, it promotes good sealing of the valve.

Have a look at the bottom left diagram here:



The picture is not to scale, the difference in angle is very small because the seat is usually less than 2mm wide. The advantage of this better seal is that there is less burning of the seat (these are the small round marks you see on the valve side of the seat when you grinding them in with a stick and paste, they are a bitch to remove by hand). The seal is maintained as the seat gets worn, because the angles continue to work together. Some also claim that the seat will also clean itself, but i'm not sure on that one

The most important part of the good seal is of course............ Power That chamber needs to be sealed as good as it can be, any air leaks past the rings, head gasket, head, block or the valves loses power, and that particular valve cut will give the best seal over the longest period of time. Its not radical, experimental or anything new people have been doing this for years.

[vwscooter]

"Followed by a 30* top cut, then the seat cut, both are on a double sided cutter. The seat cut is at 46* the two faces will bed in together within the first moments of the engine being started."

What do you mean by bed in together??

[Rav335uk]

Missed a set of BC coilovers a few days ago, so I decided to spend the money elsewhere, and bought this, atleast now I can set the car up to take the Hartge Splits.