And it begins...

[CorvallisBMW]

Any plans to bore it out and make it more than 2.7?

[Dave]

Crank scraper a good idea if you are going to track it. Prob not a bad idea even if you do the parking lot cone chasing.

Oil starved bearings do bad things. Ask me how I know . . . .

[Jand3rson]

Excellent, thanks nando. That's why I started this thread, I need all the info I can get! I've been reading the M20 forum like mad, but there's so much confliciting info, and so many engines that are similar but not the same, so I'll be asking lots of questions both here and there.

[CorvallisBMW]

Looks great Josh! I can't wait to see how it turns out!

[nando]

the crank scraper isn't a bad idea (mostly for the oil baffles) - but yeah, there isn't much benefit to knife edging on a street motor that will never see over 7000rpm.

[Jand3rson]

s50 cam in a sohc head? i dont think that would work well.

He probably meant crank.

So the knife edge would be a waste, eh? Good to know, I don't want to spend money where it isn't needed. Should I still do the crank scraper?

[moatilliatta]

s50 cam in a sohc head? i dont think that would work well.

[z31maniac]

2mm overbore + S50 cam for 330i!!!!

[nando]

I wouldn't waste money on a knife edged crank - that's more something you would do for a high-rpm build with super lightweight parts. I would just stick to the basics - cam, exhaust, tuning. a knife edged crank will get you maybe 1%, but the other three will get you 25% :)

[2002maniac]

make sure you check the piston to valve clearance!

[moatilliatta]

m20 weaksause...

jk im kinda more exited to do a 2.7 build than a twin cam...

[silversleeper]

So, are 2.7i builds similar to the LS/VTEC thing that the Honda camp does?

[Jparkr]

stealing my 327is thunder for the picnic eh? oh its on...

[george graves]

You're going to want to replace that fan...:!:

Kidding - looks like fun. M20 are so simple to work on it's fun!

EDIT: OH AND I WANT TO KNOW WHAT IS IN THE "RAINY DAY BOX!!!!"

[Jand3rson]

Considering the list of work you'll be doing to the bottom end, there is virtually no benefit to have a low mileage block.

Glad to hear you're putting together something fun for the car though!

The advantage is I don't have to worry about the condition of parts like the crank, rods, bearings, etc.

Also, it means the cylinder walls are still in great shape, but I'm still going to hone them.