Hey, I'm trying. Clearance is important for timing and overlap at intake/exhaust TDC, when both valves are slightly open.
Most of the power increases over the production of these engines were due to changes in the cam profile. I see lots of people talking more fuel, more boost, and no cam alterations so it's an overlooked part. I know going to a Delta torque grind in my Subaru EA81 actually really woke it up, I am also running a Delta custom grind in the 300 in my van with great results.

If Delta doesn't have that info, then why reinvent the wheel when Colt Cams has that info and is already set up for a performance grind?

coltcams.com




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1983 123.133 California
- GreaseCar Veg System

I love that engine.. it will really perk up with the Redline Weber 32/36 carb on it. That is a pushrod engine used by many experimental aircraft people due to being ' bulletproof'... It is the VW air cooled 4 engine with the 7 major faults fixed.. due to the hiring of the former head of VW. It is smaller and lighter than the air cooled engine with twice the hp stock... meaning AC can be run on it down here in the south.

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Off-topic, but curious... what are the seven major faults? I know one big one was VW putting the dog house oil cooler behind piston #3, making it run hotter.

Kurt

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- '79 240D - engine swap complete! Engine broken in! 28-31 mpg! Lovin' the ride!
- '86 190D (W201-126) - 2.5 NA engine, 5 speed, cloth interior, manual climate controls, 33-34 mpg (sold to forum member).