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Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 10:02 am
by michael
Hi All,
Can anyone tell me, with certainty, the number of degrees before bottom dead centre when the exhaust valve opens, for a 96 NA8 standard engine.
Thank you
Michael
Re: Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 11:44 am
by broady
no idea about before bottom DC but the spec is 10 degrees BTDC
Re: Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 12:55 pm
by StanTheMan
are you refering to spark or cam timing broady?
and yes they are related but would be two different things altogether.
what he's asking has more to do with the opening duration of the cam profile and where it starts to move the valve open.. .....right?
Re: Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 3:26 pm
by broady
sh*t, you're right. Nevermind me. Just re-read it.
The info you're looking for is here:
http://solomiata.com/cams.html
Re: Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 4:00 pm
by manga_blue
Mazda specs for the 95 model NA8 are:
IN: open 5 BTDC, close 48 ABDC
OUT: open 56 B BDC. close 14 ATDC
Re: Question re cam timing on NA 8
Posted: Wed Aug 11, 2010 4:09 pm
by michael
Thanks Magna_blue and fellas,
I was referring to the cam timing and when (degrees of rotation) the cam starts to open the exhaust valve and ideally when the exhaust valve then closes. That's what you have provided, right magna-blue ?
Regards
Michael
Re: Question re cam timing on NA 8
Posted: Thu Aug 12, 2010 12:16 am
by broady
Yeah, and the specs provided by manga-blue are exactly the same as the ones on the solomiata site...
Re: Question re cam timing on NA 8
Posted: Thu Aug 12, 2010 9:13 am
by michael
Thanks broady,
Initially I missed the link in your earlier post.
Thanks for your help
Michael