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NA8 Camshaft Profiles
Posted: Mon Jan 19, 2009 8:37 am
by project.r.racing
hi all,
Just wondering if anyone knows the lift , duration, opening and closing before and after TDC and BDC please?
And also if anyone has replaced them with aftermarket cams? If so, what did you use and what gains did you achieve?
Cheers,
Ryan
NA8 Camshaft Profiles
Posted: Mon Jan 19, 2009 11:38 am
by Matty
NA8 Camshaft Profiles
Posted: Mon Jan 19, 2009 2:02 pm
by project.r.racing
Matty wrote:http://solomiata.com/cams.html
those are the same as my 92kW astina cam profiles.
know the oz delivered mx5 cam profiles?
NA8 Camshaft Profiles
Posted: Mon Jan 19, 2009 2:18 pm
by Matty
Be willing to bet they are the same.
NA8 Camshaft Profiles
Posted: Wed Jan 21, 2009 6:21 pm
by irwin83r
anyone know the cam shaft specs of the famila turbos?
NA8 Camshaft Profiles
Posted: Wed Jan 21, 2009 7:34 pm
by project.r.racing
Mazda Familia Gt-X, GT-R, GT-Ae, Ford Laser TX3
Intake cam duration 233° @ 0.003"
Intake cam opening 2° BTDC
Intake cam closing 51° ABDC
Intake cam lobe height 44.094mm (1.7360")
Intake cam base circle 35.941mm (1.415")
Intake valve lift 8.1534mm (0.321")
Exhaust cam duration 247° @ 0.003"
Exhaust cam opening 59° BBDC
Exhaust cam closing 8° ATDC
Exhaust cam lobe height 44.600mm (1.7560")
Exhaust cam base circle 35.941mm (1.415")
Exhaust valve lift 8.6614mm (0.341")
Valve overlap 10°
Mazda Astina , Ford Laser, Kia Mentor
Intake cam duration 233° @ 0.003"
Intake cam opening 5° BTDC
Intake cam closing 48° ABDC
Intake cam lobe height 44.094mm (1.7360")
Intake cam base circle 35.941mm (1.415")
Intake valve lift 8.1534mm (0.321")
Exhaust cam duration 250° @ 0.003"
Exhaust cam opening 56° BBDC
Exhaust cam closing 14° ATDC
Exhaust cam lobe height 44.600mm (1.7560")
Exhaust cam base circle 35.941mm (1.415")
Exhaust valve lift 8.6614mm (0.341")
Valve overlap 19°
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Still chasing the MX5 camshaft profiles, or confirmation that they are the same as Astinas/Lasers/Mentors...
Ryan
NA8 Camshaft Profiles
Posted: Thu Jan 22, 2009 7:44 pm
by Rotary
NA8 Camshaft Profiles
Posted: Thu Jan 22, 2009 10:02 pm
by Inf3ct0R
stock NA8 profile
IN 233deg 8.6mm lift
EX 250deg 8.1mm lift
NA8 Camshaft Profiles
Posted: Fri Jan 23, 2009 2:03 pm
by 93_Clubman
All I could find in some pubs I have was: NA8 cam lobe height intake: 1.736in (44.094mm); exhaust: 1.7559in (44.6mm).
Even Quithel <http://www.quithel.co.uk/> links to Randy Stocker's cam specs.