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EOI: BC 272 Cams

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23 replies to this topic

#21
xjokux

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Valve timing. Ignition timing is 5*

1991 CB Lancer GSR. Fully restored. Forged vr4 motor. FP Manifold. 20g. 38mm Tial wastegate. 3" Punishment Racing dumpipe. FIC 950cc. Ecmlink.  Koni inserts coilovers. Evo 4 brake setup. Sprint 15' Harts racing. 280 cams. 4g61 inlet. Evo 8 Throttle body. 

1995 SSG RVR
2014 ASX Diesel 4WD

 


#22
jack be nimble

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-3 and +1 will make the cams lumpier if im not mistaken
4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

#23
MDK87

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Decreasing lobe seperation should shift the peak power to a higher RPM, but usually you'd be pulling timing from your ign map in this area to deter knock. Correct me if I'm wrong. 

Valve timing on the other hand is fixed, unless you're running retrofitted MIVEC like some of the crazies :P


Edited by MDK87, 29 April 2014 - 10:28 AM.


#24
jack be nimble

jack be nimble

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Decreasing lobe seperation should shift the peak power to a higher RPM,
:P

Yep, and rougher idle. I wasnt sure that -3 +1 was increasing or decreasing lobe seperation.

Edited by jack of all, 29 April 2014 - 01:36 PM.

4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.


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