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PRW rocker ratio sb #1041568
07/27/11 06:13 PM 07/27/11 06:13 PM
Joined: Aug 2004
Posts: 2,128
sweden
S
sshemi Offline OP
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sshemi  Offline OP
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Joined: Aug 2004
Posts: 2,128
sweden
Thought if someone would be interested.
I checked all my rockers for ratio and they are between 1.4915-1 and 1.526-1 witch is not all that bad exept i bought 1.6-1 ratio!
These are the stainless ones.

Well you get what you pay for.

Re: PRW rocker ratio sb [Re: sshemi] #1041569
07/27/11 08:18 PM 07/27/11 08:18 PM
Joined: Aug 2007
Posts: 498
El Dorado Ca
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65signet Offline
mopar
65signet  Offline
mopar
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Joined: Aug 2007
Posts: 498
El Dorado Ca
I thought it may be like 1.53 on my 1.6 but i guess i was off.

1965 Plymouth Barracuda 273 M/SA
1970 Plymouth Duster 360/904 10.60s with J heads
Re: PRW rocker ratio sb [Re: 65signet] #1041570
07/27/11 08:48 PM 07/27/11 08:48 PM
Joined: Aug 2006
Posts: 2,141
junction city oregon
V
viperblue72 Offline
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viperblue72  Offline
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Joined: Aug 2006
Posts: 2,141
junction city oregon
They also only leave room for a beehive spring. And yes the 1.6 rockers measure close to 1.5 ratio.
Re: PRW rocker ratio sb [Re: viperblue72] #1041571
07/28/11 10:18 AM 07/28/11 10:18 AM
Joined: Aug 2004
Posts: 2,128
sweden
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sshemi Offline OP
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sshemi  Offline OP
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sweden
what are the 1,5s at???
Re: PRW rocker ratio sb [Re: sshemi] #1041572
07/28/11 04:32 PM 07/28/11 04:32 PM
Joined: Nov 2005
Posts: 808
mckinney texas
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shoebox Offline
super stock
shoebox  Offline
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Joined: Nov 2005
Posts: 808
mckinney texas
How Do get that measurement?

74 dart sport 440 www.Csucarbs.com
Re: PRW rocker ratio sb [Re: shoebox] #1041573
07/28/11 04:52 PM 07/28/11 04:52 PM
Joined: Aug 2004
Posts: 2,128
sweden
S
sshemi Offline OP
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sshemi  Offline OP
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sweden
with a magnetic stand and an indicator on one retainer and knowing the lobelift.
Re: PRW rocker ratio sb [Re: sshemi] #1041574
07/28/11 05:34 PM 07/28/11 05:34 PM
Joined: Jun 2008
Posts: 3,916
usa
L
lewtot184 Offline
master
lewtot184  Offline
master
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Joined: Jun 2008
Posts: 3,916
usa
did you use a hydraulic tappet or solid?
Re: PRW rocker ratio sb [Re: lewtot184] #1041575
07/28/11 05:43 PM 07/28/11 05:43 PM
Joined: Aug 2004
Posts: 2,128
sweden
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sshemi Offline OP
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sshemi  Offline OP
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sweden
solid
Re: PRW rocker ratio sb [Re: sshemi] #1041576
07/28/11 08:17 PM 07/28/11 08:17 PM
Joined: Jan 2003
Posts: 5,486
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,486
SoCal
Did you account for the lifter angle loss?

Brian Hafliger
Re: PRW rocker ratio sb [Re: Brian Hafliger] #1041577
07/28/11 08:43 PM 07/28/11 08:43 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
Quote:

Did you account for the lifter angle loss?

at max lift the rocker ratio won't be anywhere near 1.5 or 1.6.

Fastest 300
Re: PRW rocker ratio sb [Re: Crizila] #1041578
07/29/11 03:54 AM 07/29/11 03:54 AM
Joined: Aug 2004
Posts: 2,128
sweden
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sshemi Offline OP
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sshemi  Offline OP
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Joined: Aug 2004
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sweden
If measuring at the retainer i get the true measurement.

On my w5 motor with Harland sharps the ratio was spot on.
Aldough they are more expensive.


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