Valve Timing Diagrams - Alfa Romeo Forum
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(Post Link) post #1 of 7 Old 19-11-09 Thread Starter
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Hmmm Valve Timing Diagrams

Hi, Iím Matt and am currently studying motorsport at Derby University.

As part of my power train module, I have been set an assignment, based around valve timing on different engines. I have to base my research on a 2 valve Hemi engine, and a 4 valve pent roof.

I decided, after a little research, that the Alfa V6 3.0 litre seems to be an excellent engine to base my studies on, because the 2 valve and 4 valve [per cylinder] versions are based on the same engine.

To construct my valve timing diagrams, I need to find out when the Alfa exhaust and inlet valves open and close, based on crank angle. For example, on an engine that consistently achieves complete combustion, the exhaust valve can be opened at about 40 degrees before BDC.

I hope Iíve explained this in a way that you can understand! Iíve never been very good at explaining things!

Hereís a link to an example of a valve timing diagram so you can see what I mean: http://wps.com/AMC/Rambler-327/The%2...s/v8-fig30.jpg

Any help you can give me would be much appreciated,

Thanks a lot,

Matt
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I know nothing about engines, but just read in an article, that in the new Alfa 1750 turbo engine there are times when all valves are open to help the turbo to get more fresh air, might be an interesting example for you how technology developed since the Hemi
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I don't know much either, but it might be worth putting this in the engines forum as that sees a bit more traffic.
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Originally Posted by badgers_nadgers View Post
I don't know much either, but it might be worth putting this in the engines forum as that sees a bit more traffic.
Moved to engines lounge.
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I'll be able to help with some of these, (TS 16201, TS 32301), (V6 16101, 16102), and 2 litre TB V6 16202. PM me with your email address, I'm just about to scan them.
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(Post Link) post #6 of 7 Old 21-11-09 Thread Starter
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Hi everyone, thanks so much for getting back to me, really appreciate it.

Thanks armoore, your about to get a pm!

Matt
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