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Old 01-21-2012, 11:50 AM   #1
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Default Cylinder heads?




Anyone know about these heads?

Longer I think about it, the more I think its like a single cam head.
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Old 01-21-2012, 12:22 PM   #2
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Anyone know about these heads?

Longer I think about it, the more I think its like a single cam head.
Two different engines.

The top is a Lancia TriFlux:

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Old 01-21-2012, 12:23 PM   #3
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Google image search FTW.

One exhaust and one inlet valve per cylinder are driven by each cam, the opposing cam drives the other pair.

http://avs.spot-mate.com/triflux.html


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Old 01-21-2012, 12:31 PM   #4
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Two different engines.
I didn't say anything about the engine, I said cylinder heads.
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Old 01-21-2012, 12:37 PM   #5
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u mad
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Old 01-22-2012, 02:53 AM   #6
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Originally Posted by Techsalvager View Post

Longer I think about it, the more I think its like a single cam head.
It's nothing like a single cam head. When you actually look at the airflow, a 4-valve DOHC has more in common with a 2-valve SOHC head than the designs you posted did.
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Old 01-22-2012, 03:10 AM   #7
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The top is a Lancia TriFlux:
I c wat u did thur, using your intornet skillz

Really interesting looking engines though.
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Old 01-22-2012, 11:45 AM   #8
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This one is also a 4 cylinder.

http://touringmm.blogspot.com/2011/0...inderkopf.html

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Old 01-22-2012, 02:20 PM   #9
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Yes I'm aware their 4 cylinders, interest is only in the heads.

Quote:
It's nothing like a single cam head. When you actually look at the airflow, a 4-valve DOHC has more in common with a 2-valve SOHC head than the designs you posted did.It's nothing like a single cam head. When you actually look at the airflow, a 4-valve DOHC has more in common with a 2-valve SOHC head than the designs you posted did.
I meant in the same way altering the cam on a single cam alters both intake and exhaust compared to a common twin cam motor where one cam operate intake valves, the other being exhaust valves. I figure one cam in those motors have a intake and exhaust valve in one cylinder attached to it, so altering cam timing would alter both intake and exhaust timing on that side of the engine similar to a single cam motor.
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