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Evo1 Cam Timing For Fast Road 998


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#1 BaronVonchesto

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Posted 09 June 2019 - 01:01 PM

Hi all,

 

does anyone have any guidance on the cam timing to use with the minispares EVO 1 cam? I'm talking about how many degrees BTDC or ATDC to set it. I'd like to have better low end performance so i'm thinking a lightly advanced setting.

 

Im using a CAHT-88 minispares head and i have +40 thou pistons and the CR is 9.0


Edited by BaronVonchesto, 09 June 2019 - 06:47 PM.


#2 BaronVonchesto

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Posted 10 June 2019 - 02:43 AM

bump. minispares website says it should be timed at 107 deg for optimum performance.

 

wondering if this is the case for my 998 as well?



#3 BaronVonchesto

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Posted 12 June 2019 - 06:58 PM

I guess people haven't really used this cam with a 998?

 

I'll stick with minispares recommendation then.



#4 hhhh

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Posted 12 June 2019 - 07:10 PM

If it's a new chain, I'd go 105 degrees to account for chain wear after installation.



#5 Cooperman

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Posted 12 June 2019 - 09:38 PM

I built a 998 Mk.2 1969 Cooper engine with this cam and apparently it goes very well. 



#6 BaronVonchesto

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Posted 14 June 2019 - 10:51 AM

If it's a new chain, I'd go 105 degrees to account for chain wear after installation.

 

im using a new high strength simplex chain. i dont think it'll stretch as much as 2 deg surely?



#7 Cooperman

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Posted 14 June 2019 - 12:22 PM

I bet it does. I did a test one time and a quality Duplex chain stretched to retard the cam by 1.5 degrees after 1500 miles.




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