Hello everyone. Newbie here. Hoping this thread can still be active. I have a quite similar case with Richard. Except my cylinder head and piston (CYL4) got wrecked due to hard acceleration when I was trying to isolate which ignition coil was misfiring
did quite a few runs reving to 6500rpm and the last run engine quit and wont even crank. Am thinking I may have over revved and timing belt jumped a few teeth during the process. Timing belt is still ok and undamaged.
Anyways.. someone locally selling an APU head and wanted to inquire from you guys a couple of things. Someone from another group said the APU will fit the BFB and added pulley needs to be changed and also recommended to upgrade the exhaust valves.
Questions..
1. When using the APU head and its corresponding camshaft, valves, springs, etc., any anticipated issues? Hopefully lift and duration of both engine codes are the same.
2. Which pulley should be used when switching the heads? APU camshaft with APU pulley? or APU camshaft with BFB pulley?
3. One piston is clearly damaged. Is an APU piston the same as the BFB?
4. Unsure if there might be damage or strain with the BFB camshaft so I'm more leaning to use the APU camshaft.
Any help, comments or suggestions highly appreciated. Btw I'm from the Philippines