Just wondering if some one on here could point me in the right direction.

My engine knock very fast. I have the timing advance at 8* in the 1.0 bar fields(top of the rev's).

Where does the det. start. Is it a cilinder issue or more a head issue?

Maybe it is because I have a machined head( 0,1[mm]) and a 0,8[mm] MHG?

Anyone who can tell me more on this?

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ST185 CS #1845

copy of my response in other post....

You need to consider if that is total timing or not. Remember you set your base timing via dizzy to 10 deg BTDC and then add another 10 degs advance with ecu map which equals 20 degs.

I assume from Mooks post that he is reffering to 20 degs total advance. Maybe Adrian (the mapper) sets base timing to 0 degs BTDC via dizzy before he starts. Or he thinks in "total timing".

To answer another question you asked in your other post Pinjo - You also have different cams which will change your dynamic compression ratio and will start to choke the engine exhaust side with teh short duration - this means you have to run less timing.

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JP
GT4DC Treasurer

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