Valve timing/over lap... - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 10-21-2013, 01:40 PM
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Valve timing/over lap...

kinda silly thread to post on this forum,

but I'm after some data (i don't have much experience but I'm sure some on on this forum had something to do with this) to help me out with my home work
I'm after specific degrees of when does inlet valve close and open same for the exhaust, it needs to be for an actual car and i need to know the model and the year and if its petrol or diesel....

Something like this


but you can just say how many degrees BTDC inlet opens and how many degrees ABDC it closes
Then for the exhaust how many degrees BBDC it opens and how many ATDC it closes

///I KNOW THIS IS A STUPID THREAD\\\


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#2 (permalink) Old 10-22-2013, 06:48 PM
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It depends on the car and the engine. Each engine may have different angles then its previous iteration.


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#3 (permalink) Old 10-23-2013, 02:05 AM
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Yes I'm aware of that, is someone game me some numbers when the valves open and close and just state what vehicle is it... I'd be happy with that


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#4 (permalink) Old 10-23-2013, 05:19 PM
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Stock US S50 cams -
Intake: 252 degree, 10.2mm lift
Exhaust: 244 degree, 9.5mm lift


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#5 (permalink) Old 10-23-2013, 05:42 PM
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so is that intake:
Open = 36 degree BTDC
Close = 36 degree ABDC

???

You just said how long the valves are opened for do you know may me more specific how much degree before top dead centre it open and how much after bottom dead centre it closes (intake)
Then same for the exhaust?

(Yes I gathered that by now you be getting frustrated)


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