Boxerworks.com

R85/8 wrote: There's a wide range of competition rods for the 2002 - inc titanium - so this could get more interesting....

350g Titanium rods to fit are available from HPN:



Also Carillo will make connecting rods to specification.

Very Very pretty.

Very Very expensive. 1100.00 € EACH


drool

But back on the VW idea--many aftermarket "VW" rods are made for smaller journals, 50mm or 50.8mm (2"). Perhaps a crank could be ground to match? Different lengths are available, possibly to use with pistons with a shorter compression height?

In the back of my head, and I don't know if any of this is feasible, I'm picturing a stroked R90, built with 90.5 VW 'stroker' (low compression height) semiforged flattop pistons, and R60 or other small chamber, small port heads, cut to give significant squish area. Just bringing some VW ideas into the Airhead. How much case clearance is there at BDC in an AIrhead?

Now busy searching VW sites....

I wonder how much reciprocating weight could be saved in total with a conrod/piston combination.

Those HPN rods look like the ultra expensive way to do it, so I think I'll give them a miss. Besides, they're not shiny enough for the money

Melville,

Sounds like you want the Seibenrock 1070 kit.....

chasbmw wrote:Melville,
Sounds like you want the Seibenrock 1070 kit.....

May be showing my ignorance, but is that VW sourced parts?

R85/8 wrote:

chasbmw wrote:Melville,
Sounds like you want the Seibenrock 1070 kit.....

May be showing my ignorance, but is that VW sourced parts?

No that's $$$$ourced parts. I saw a complete disassembled R90 motor at a swap last year, affordable, and I've been building it in my head since, assuming the barrels needed a bore and the crank a grind, and applying a bit of "why not" from my VW experience.

Building it in my head, as I didn't have the $250 that would have brought that one home.

The downside of VW stuff is that a VW that turns 7K rpm is a rare thing, but that's what stock Airheads do. Always a question about how long, and how often, you'd be able to wind the thing out.

New from MI. Not cheap, but a better price than others out there.
These work with all cranks modified or not.
http://www.motoren-israel.com/product_i ... -Satz.html

mattcfish wrote:New from MI. Not cheap, but a better price than others out there.
These work with all cranks modified or not.
http://www.motoren-israel.com/product_i ... -Satz.html

480 grams? They're boat anchors!

Major Softie wrote:

mattcfish wrote:New from MI. Not cheap, but a better price than others out there.
These work with all cranks modified or not.
http://www.motoren-israel.com/product_i ... -Satz.html

480 grams? They're boat anchors!

I bet that weight includes the bolts...maybe even the bushings.