Hi guys so im reading up on timing since i now need to get my engine on the dyno for some more carb tuning i want to mess arround with timing to.
iv been reading alot of pages about 24 degrees btdc at 4000 rpm but heres my questiion.
On stock engine the timing should be leading 5 ATDC but in Mazda COMP book it should be 20 BTDC thats a big differnce i think but what do you guys think would be safe and at what rpm?.

Best regards Rasmus