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Forum namePerformance/Engine
Topic subjectAnother Camshaft Topic
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=113647
113647, Another Camshaft Topic
Posted by Avenger, Oct-31-03 05:45 AM
*** Lost my first attemp at this post ... GRRR ***

I was looking at the 1g 4g63 Cam Specs the other day and noticed something right off the bat. It made me run to go find my Crower stage 2 specs. Here are the 4g63 specs

Intake opens @ 21* BTDC
Close @ 51* ABDC
Intake Duration 252*
Exhaust opens @ 55* BBDC
Closes @ 9* ATDC
Exhaust Duration 244*
Overlap 30*

Here are my crower stage 2 specs ...

Intake opens @ 18* BTDC
Closes @ 50* ABDC
Intake Duration 248*
Exhaust Opens @ 57* BBDC
Close @ 9* ATDC
Overlap 27*

Hmmm ... notice the similarities. I'm thinking that even with the overlap that the C2 cams would work great on a turbo'd car (I'll find out soon enough). I know that you normally want to eliminate overlap under forced induction but all 4g63 cam upgrades add duration and end up adding overlap. So what do you guys think? Thoughts, questions, glaring oversights?
113648, RE: Another Camshaft Topic
Posted by admin2, Oct-31-03 07:02 AM
Do it. I think, given those stats, that it will work very wqell.
113649, RE: Another Camshaft Topic
Posted by grain, Oct-31-03 07:33 AM
what about the crane 14 cams? im going to be running them under boost. i dont know if thats good not not.???
113650, RE: Another Camshaft Topic
Posted by Michael_97RS, Oct-31-03 12:34 PM
Those specs are both at .050" lift?

How does the lift compare?

That surprises me for specs...

Only one way to know for sure, get that turbo finished up.



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113651, RE: Another Camshaft Topic
Posted by Avenger, Nov-03-03 10:38 AM
Those are the specs listed in the FSM for the 4g63 Engine Overhaul and what Jim listed in the earlier cam post. These numbers are not at .050" tappet lift.

I will get this damn installation of mine done soon (dear lord I hope so). I need to just not be lazy as I have been. Only have a few things left.