Will this run on 92 octane?
Thread Starter
On The Tree
iTrader: (12)
Joined: Aug 2004
Posts: 155
Likes: 2
From: metro St.Louis Mo.
Will this run on 92 octane? 4.065 bore
3.622 stroke
6.098 rod
+3cc piston -.007 out the hole
64cc heads
.041 gasket thickness
gasket bore 4.120
I'm coming up with 11.3-1 SCR
9.78-1 DCR
Valve Setting: Intake .000 Exhaust .000 HOT
Lift: Intake @Cam 3241 @Valve 551 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 3241 @Valve 551
Rocker Arm Ratio 1.70
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 25.0 BTDC 73.0 ABDC 278.0 °
Exhaust 78.0 BBDC 28.0 ATDC 286.0 °
Spring Requirements: Triple Dual Outer Inner
Part Number 144832
Loads Closed 112 LBS @ 1.800 or 1 13/16
Open 303 LBS @ 1.270
Recommended RPM range with matching components
Minimum RPM 1500
Maximum RPM 6000
Valve Float 6600
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake (2.0) ATDC 38.0 ABDC 110 216.0 °
Exhaust 52.0 BBDC (8.0) BTDC 120 224.0 °
Can someone please check my math?????????
I've read that the most you can get away with is 9.0-9.1 on 93 octane.
3.622 stroke
6.098 rod
+3cc piston -.007 out the hole
64cc heads
.041 gasket thickness
gasket bore 4.120
I'm coming up with 11.3-1 SCR
9.78-1 DCR
Valve Setting: Intake .000 Exhaust .000 HOT
Lift: Intake @Cam 3241 @Valve 551 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 3241 @Valve 551
Rocker Arm Ratio 1.70
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 25.0 BTDC 73.0 ABDC 278.0 °
Exhaust 78.0 BBDC 28.0 ATDC 286.0 °
Spring Requirements: Triple Dual Outer Inner
Part Number 144832
Loads Closed 112 LBS @ 1.800 or 1 13/16
Open 303 LBS @ 1.270
Recommended RPM range with matching components
Minimum RPM 1500
Maximum RPM 6000
Valve Float 6600
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake (2.0) ATDC 38.0 ABDC 110 216.0 °
Exhaust 52.0 BBDC (8.0) BTDC 120 224.0 °
Can someone please check my math?????????
I've read that the most you can get away with is 9.0-9.1 on 93 octane.
Last edited by sroka; Jun 20, 2008 at 05:21 AM.
YEP calc says 4+4=27 right now..LMAO! I think its broken, I was doing somehing else and it didn make sense either. Sheeesh. Sorry my calulator is hosed , my calulations were wrong.. my appologies
Last edited by 99blancoSS; Jun 20, 2008 at 12:30 PM.
