Re: Does the 6.4 hemi have roller rockers?
[Re: MattW]
#1005854
06/04/11 12:40 AM
06/04/11 12:40 AM
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Joined: Feb 2006
Posts: 1,051
The Great White North
RAMM
super stock
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super stock
Joined: Feb 2006
Posts: 1,051
The Great White North
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Matt there is NOT that much power in a roller tip/roller fulcrum. There is some power in a proper rocker setup however. J.Rob
2009 PHR\EMC Competitor
2010 PHR\EMC Competitor
2011 PHR\EMC Competitor
2012 PHR\EMC Competitor
2013 PHR\EMC Competitor
2014 HotRod/EMC Competitor
2015 HotRod/EMC NoShow
2016 HotRod/EMC 3rd place SPEC Bigblock
2018 HotRod/EMC 7th place G3
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Re: Does the 6.4 hemi have roller rockers?
[Re: RAMM]
#1005855
06/04/11 10:06 AM
06/04/11 10:06 AM
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Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
OP
master
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OP
master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
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Quote:
Matt there is NOT that much power in a roller tip/roller fulcrum. There is some power in a proper rocker setup however. J.Rob
Thanks for the info Jesse
Nice work on the stock stroke 360 with EQ heads.
Maybe my 416 Indy head flat tappet you built me years ago did actually make 650hp
Seems to be the norm lately. Lol
Keep up the good work. Very few are posting useful info these days. 
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Re: Does the 6.4 hemi have roller rockers?
[Re: RodStRace]
#1005857
06/04/11 12:32 PM
06/04/11 12:32 PM
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Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426
I Live Here
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I Live Here
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
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Quote:
I'm not into the whole conspiracy deal on cars. When people talk about the 100 MPG carb and the manufacturers keeping the cars dumbed down, I usually scoff.
So why aren't they doing roller rockers on these high horse, high tech engines? Doesn't make sense to leave that kind of friction on the table.
Price a set of Roller rockers compared to a set of standard rockers, then multiply that times however many million engines being built, and theres your answer. The slight extra friction at the tip of a fuel injected, well tuned, hydraulic cammed, low RPM rev limited engine isnt worth the extra cost of the roller tips.
Yes they have roller lifters, but they are only in the newer model cars.
Pluss most have overhead cams, I think Mopar and Chevy are the only push rod engine.
Kasey
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Re: Does the 6.4 hemi have roller rockers?
[Re: Moparnut426]
#1005858
06/04/11 12:48 PM
06/04/11 12:48 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Quote:
I'm not into the whole conspiracy deal on cars. When people talk about the 100 MPG carb and the manufacturers keeping the cars dumbed down, I usually scoff.
So why aren't they doing roller rockers on these high horse, high tech engines? Doesn't make sense to leave that kind of friction on the table.
Price a set of Roller rockers compared to a set of standard rockers, then multiply that times however many million engines being built, and theres your answer. The slight extra friction at the tip of a fuel injected, well tuned, hydraulic cammed, low RPM rev limited engine isnt worth the extra cost of the roller tips.
Yes they have roller lifters, but they are only in the newer model cars.
Pluss most have overhead cams, I think Mopar and Chevy are the only push rod engine.
Kasey
potential warranty issues, too I'm sure...16 tiny roller bearings (~1/2 the size of the rollers in roller lifters), if one came apart in the warranty period, it could wreck the whole motor......
of course, chrysler has ONLY been using roller LIFTERS in their V8's for 26 years (318 in M bodies started in '85)
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Does the 6.4 hemi have roller rockers?
[Re: patrick]
#1005859
06/04/11 01:00 PM
06/04/11 01:00 PM
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Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426
I Live Here
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I Live Here
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
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Quote:
Quote:
Quote:
I'm not into the whole conspiracy deal on cars. When people talk about the 100 MPG carb and the manufacturers keeping the cars dumbed down, I usually scoff.
So why aren't they doing roller rockers on these high horse, high tech engines? Doesn't make sense to leave that kind of friction on the table.
Price a set of Roller rockers compared to a set of standard rockers, then multiply that times however many million engines being built, and theres your answer. The slight extra friction at the tip of a fuel injected, well tuned, hydraulic cammed, low RPM rev limited engine isnt worth the extra cost of the roller tips.
Yes they have roller lifters, but they are only in the newer model cars.
Pluss most have overhead cams, I think Mopar and Chevy are the only push rod engine.
Kasey
potential warranty issues, too I'm sure...16 tiny roller bearings (~1/2 the size of the rollers in roller lifters), if one came apart in the warranty period, it could wreck the whole motor......
of course, chrysler has ONLY been using roller LIFTERS in their V8's for 26 years (318 in M bodies started in '85)
Man, Its been 26 years already for roller lifters..... I am getting old!!
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