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hard to get a cam i want 

 

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 Post subject: hard to get a cam i want
Posted: Tue Dec 19, 2006 9:24 pm 
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Age: 49

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

Does anybody know where i could get a billet camshaft to suit a 4.0l with around the 30-70 to 35-75 duration with 0.480" to 0.500" lift?
Yes i know i need a moded ecu or piggy back ecu, i already have one, and i already have the valve springs to suit that cam specs.
the car is a manual ea sedan with 3.27lsd, hiflow exhaust & intake.

 

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Posted: Tue Dec 19, 2006 9:39 pm 
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Age: 28

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Ride: BA xr8 Magnet ute

Location: Melbourne
VIC, Australia

bit bigger lift.... but you get the Idea...

Crow EA-ED BILLET RACE CAM

Part No: 2222546

Valve Timing:IN.35/75 EX.75/35

Duration:290 290

.075" Duration: 230 230

Valve Lift: .525" .525"

Pwer Range: 3000-6000

Race cam. Custom Computer required.


Here is the link to All Crow Camshaft details to suit EA-AU

http://www.crowcams.com.au/templates/Ca ... -OHC.shtml
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Posted: Tue Dec 19, 2006 10:27 pm 
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Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
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The problem with that sort of lift (0.525") is that i'm using flat top pistons made by Mahle, as it is I have to machine valve reliefs in the top of them now. I'm runnuing around 10-10.5:1 comp ratio.
Anymore cams to pick from?

 

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Posted: Tue Dec 19, 2006 10:28 pm 
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Ride: BA xr8 Magnet ute

Location: Melbourne
VIC, Australia

why not get a set of forged Dished pistons
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Posted: Tue Dec 19, 2006 10:37 pm 
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SA, Australia

cjh wrote:
The problem with that sort of lift (0.525") is that i'm using flat top pistons made by Mahle, as it is I have to machine valve reliefs in the top of them now. I'm runnuing around 10-10.5:1 comp ratio.
Anymore cams to pick from?


Max lift doesnt have anything to do with P/V clearance. A cam with 480thou lift might smash where a 520 thou lift cam might be fine.

How much clearance at TDC do you have?

 

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Posted: Tue Dec 19, 2006 10:39 pm 
Getting Side Ways
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Age: 49

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

Because dished pistons would be defeating the purpose of raising the comp ratio, and the original slightly dished pistons still have valve reliefs.
the cam specs i mentioned will produce more torque earlier with the comp ratio.

 

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