Roller Rockers
Thread Starter
7th Gear
Joined: Jan 2005
Posts: 7
Likes: 0
Roller Rockers
anyone know how mutch of a performance gain can be had
switching to roller rockers ?. how hard are they to install ?.
what brand are the best to buy ?. any ideas please
1986 L98 tpi
switching to roller rockers ?. how hard are they to install ?.
what brand are the best to buy ?. any ideas please
1986 L98 tpi
Last edited by W426HEMI; Mar 23, 2005 at 02:10 PM. Reason: did not include engine
Pro
Joined: Sep 2003
Posts: 670
Likes: 1
From: charlotte nc
I suggest you consider roller tip rockers instead of full roller (roller fulcrum and tip). Full roller rockers are not the best for a street engine as they tend not to be as durable over high mileage. Roller tips ,on the other hand , can add significantly to the life of the valve guides since they virtually eliminate the typical side loading of the valve stem as it cycles up and down the guide.
You will not see a noticable gain in power with either full roller rockers or roller tips at the standard 1.5 ratio. You may want to try 1.6 ratio especially on the intake. the 1.6 ratio wil not only increase lift but also slightly increase duration.
While you are in the valves , it's a good idea to change the seals.
You will not see a noticable gain in power with either full roller rockers or roller tips at the standard 1.5 ratio. You may want to try 1.6 ratio especially on the intake. the 1.6 ratio wil not only increase lift but also slightly increase duration.
While you are in the valves , it's a good idea to change the seals.
Le Mans Master
Joined: Sep 2000
Posts: 6,303
Likes: 714
From: Bartlett IL
Originally Posted by dwestsr
Full roller rockers are not the best for a street engine as they tend not to be as durable over high mileage.
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Originally Posted by Dominic Sorresso
That pertains to aluminum rockers. Stainless Steel ones are quite a bit more durable and also re-buildable.
My Crower Stainless Steel ones have over 30K on them.
I took them out to inspect them and they look like new -- bearings are tight.
And, they can be rebuilt.
Tom Piper
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Originally Posted by W426HEMI
THANKS,
i just heard this was one of the improvements that could
be done for more power, but i guess it will not be noticable
for stock engine
i just heard this was one of the improvements that could
be done for more power, but i guess it will not be noticable
for stock engine
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
The 1.5:1 RRs should give about a 10chp gain and 1.6:1 a 15chp gain.
If you have iron heads you may need to have the heads machined to install 1.6s; with Al heads you can go to 1.6s with no worry.
If you have iron heads you may need to have the heads machined to install 1.6s; with Al heads you can go to 1.6s with no worry.
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