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The Pub For General Automotive Related Talk |
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05-12-2005, 11:44 PM | #1 | ||
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I was just wondering if any one could fill me in on the pros and cons of roller rockers seeing they cost quite a lot what are the benifits are they easy to set up i have a 302 cleveland thanks :baby bott
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06-12-2005, 12:25 AM | #2 | ||
Performance moderator
Join Date: Feb 2005
Location: St Clair..N.S.W
Posts: 14,875
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They ROLL across valve tip [roller bearing] instead of sliding.Cuts down valve guide wear ..
Often fitted to improve lift as well, though 302 C's have 1:72 ratio..The falcram point on good rockers are roller bearing as well and should hardly wear..They are much more rigid and don't flex like pressed steel rockers..The stud mount type need pushrod guids and hardened pushrods ...
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Real cars are not driven by front wheels,real cars lift them!!... BABYS ARE BOTTLE FED, REAL MEN GET BLOWN. Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic! Dart 330ci block turbo black pearl EBXR8 482 rwkw.. Daily driver GTE FG.. Projects http://www.fordforums.com.au/showthread.php?t=107711 http://www.fordforums.com.au/showthr...8+turbo&page=4 |
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06-12-2005, 12:39 AM | #3 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Perth WA
Posts: 1,204
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Unless your going for serious revs/power (and with a 302C, its safe to assume your not) then they are a waste of money.
Basically, roller rockers reduce friction in the drivetrain, typically they can be of stamped steel design with a roller tip/friction mount or alloy with roller tip/needle bearing mount. A few Benefits - A roller rocker rolls across the top of the valve, pushing the valve down squarely as opposed to the stock friction tip which 'wipes' across the valve tip causing the valve stem to be pushed against the valve guide creating friction and wear. The alloy roller rockers are far stronger than stock rockers, so are capable of withstanding high revs. If it has a needle bearing mount, there is again a reduction in friction, less friction = more power/less heat. |
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06-12-2005, 02:28 AM | #4 | ||
Has Blue Blood
Join Date: Feb 2005
Location: Brisbane
Posts: 1,551
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It just so happens I have a set of 1.6 ratio Windsor roller rockers if anyone is interested ! I also have cleveland 1.73 ratio , but I have plans to use them soon !
Poller rockers are probly a waste of money on a near stock engine , but if you start putting in high lift cams and heavy valve springs they are worth the expense !
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06-12-2005, 03:32 AM | #5 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Posts: 2,728
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my friend said he'll blow all of us away wen he gets roller rockers in his VS V6 ?would they give that much of a power increase
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2015 FGX XR8 - 557rwkw on E85 KPM Street Fighter PCMTec Michelin Pilot Sport Cup 2 - 255/35/19 - 275/35/19 Shockworks Coilovers PITLANE AUTOMOTIVE & PERFORMANCE
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06-12-2005, 06:59 AM | #6 | |||
Blueprint of Perfection
Join Date: Mar 2005
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Quote:
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HIS 426 RWHP / 1100 NM OF TORQUE 393 CLEVELAND AFD 2V CYLINDER HEADS 1974 XB COUPE NO TRACTION AT EASTERN CREEK HERS BOSS 260 03 XR8 SEDAN COLD AIR INTAKE BY PERFORMER SHAKERS FULL X-FORCE QUAD TIPPED EXHAUST SYSTEM |
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06-12-2005, 07:45 AM | #7 | ||
The one and only
Join Date: Dec 2004
Location: Carrum Downs, Victoria
Posts: 9,053
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Without a doubt a great modification.
Even on a stock 302. Although more suited for hi po motors, it will reduce the wear of a stock motor.
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06-12-2005, 09:24 AM | #8 | ||
FF.Com.Au Hardcore
Join Date: May 2005
Location: melbourne
Posts: 564
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Needless to say really but they look horn when ya take ya rocker covers off.
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06-12-2005, 10:03 AM | #9 | ||
Guest
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thanks a lot i dont think i will be buyin them :
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06-12-2005, 11:09 AM | #10 | |||
Performance moderator
Join Date: Feb 2005
Location: St Clair..N.S.W
Posts: 14,875
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Quote:
__________________
Real cars are not driven by front wheels,real cars lift them!!... BABYS ARE BOTTLE FED, REAL MEN GET BLOWN. Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic! Dart 330ci block turbo black pearl EBXR8 482 rwkw.. Daily driver GTE FG.. Projects http://www.fordforums.com.au/showthread.php?t=107711 http://www.fordforums.com.au/showthr...8+turbo&page=4 |
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06-12-2005, 02:39 PM | #11 | ||
FF.Com.Au Hardcore
Join Date: May 2005
Location: melbourne
Posts: 564
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Maybe spend ya money on manifold carb set up, or extractors. that will give ya a bit more power. What car is it in?
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06-12-2005, 04:36 PM | #12 | |||
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Quote:
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06-12-2005, 04:50 PM | #13 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Posts: 2,728
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thankx guys ill roll him now
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2015 FGX XR8 - 557rwkw on E85 KPM Street Fighter PCMTec Michelin Pilot Sport Cup 2 - 255/35/19 - 275/35/19 Shockworks Coilovers PITLANE AUTOMOTIVE & PERFORMANCE
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