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BJ7 29F Eng Camshaft Info

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M

MCS

Jedi Warrior
Offline
Hello,

I had my BJ7 29F camshaft re profiled. I am trying to determine the stock intake centreline degrees. I think it is 106 but I have seen numbers as high as 110. All the manuals I have looked in do not have that number. I have seen 110 for the BJ8 but nothing for my engine. The cam grinder did not have this number.
Does anyone have the number and reference.

thxs Phil
 
The cam specs are in the general section of the shop manual, but you have to do the math for what you want.
Valve open 10deg btdc
valve close 50deg abdc
tdc to bdc 180deg
10+50+180=240deg
That is the full duration. On a symmetrical lobe, half would be 120deg of duration.
120-valve open(10deg btdc)=110deg atdc.

Seems kinda strange to me the grinder didn't know what he was cutting into. Iskenderian has a machine that will read that if memory serves me.
 
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