Some more notes to the engine and new ideas:
The old one was representive for modified stock parts.
Only carbs, exhaust, cam and lifters were changed - the rest was modified stock.
The cam was a 332 degrees with 12,0mm at the cam ( no 328 degrees ).
With only 9,9:1 compression ratio the engine was very agressive beginning with 4.500 min up to 7.500 min with stock WBX double springs but had little less torque at low rpms.
For the new engine I think we should try a further developed cam, let`s see.
Maybe with asymmetric valve timing ( 328 - 330 degrees timing ).
I tried this at two of Torsten Pieper own LBX-engines sucessfully.
And the compression ratio will be increasing...not less then 10,8:1...
For the valves I haven`t finished my ideas.
Maybe 43 / 37 with 7mm shaft ( Mercedes ) or 44 / 38 with 8mm shaft ( Schrick billet ).
Good suggestions are welcome
My very good friend Stefan bought some NOS 98mm Oettinger pistons in Ebay USA.
After receiving we noticed, that somebody milled the combustion skip of the pistons.
Now we only have 3,0mm piston dome thickness.
7.500 min and 11,0:1 compression ratio - what`s your opinion on this object?