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Anyone know camshaft data on the 505 turbo engine?


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A.O.A. 19°34' avant P.M.H = the inlet valve is opening 19°34' before top dead center

R.F.A. 56°24' après P.M.B = the inlet valve is closing 56°24' after bottom dead center

A.O.E. 55°10' avant P.M.B = the exhaust valve is opening 55°10' before  bottom dead center

R.F.E. 12°50' après P.M.H = the exhaust valve is closing 12°50' after top dead center

All of this with a theoretical valve clearance of 0.45mm on both sides.

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52 minutes ago, SRDT said:

A.O.A. 19°34' avant P.M.H = the inlet valve is opening 19°34' before top dead center

R.F.A. 56°24' après P.M.B = the inlet valve is closing 56°24' after bottom dead center

A.O.E. 55°10' avant P.M.B = the exhaust valve is opening 55°10' before  bottom dead center

R.F.E. 12°50' après P.M.H = the exhaust valve is closing 12°50' after top dead center

All of this with a theoretical valve clearance of 0.45mm on both sides.


Thank you. That gives these numbers (for future referance). 

 Intake Duration is 255.97 degrees. 
Exhaust Duration is 247.99 degrees.
Installed Intake Centerline is 108.42 degrees ATDC.
Installed Exhaust Centerline is 111.17 degrees BTDC.
LSA is 109.8 degrees
Overlap is 32.40 degrees.

Is valvelift also available? 
 

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On 3/24/2021 at 11:26 PM, Alfanatiker said:

Is this lift at lobe or at valves? What is the ratio of the valve rockers?

I´ll answer myself (in case the facts actually are correct and for future reference on this forum). According to this guy http://www.matrasport.dk/forum/index.php?PHPSESSID=q6qt13hp42pnih0g01g7oorl30&topic=2750.msg21168#msg21168 then the rocker ratio on the Murena 2,2 (same engine but without turbo) is 1,38. This would make out to be 7,2mm x 1,38 = 9,9936mm lift at the valve. And that makes perfect sense. 

Is it the same lift on intake and exhaust?

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