killer98xjsport
NAXJA Forum User
- Location
- Portland Oregon
I am installing a new 4.0l this weekend and I want to know if anyone has installed roller rockers. Is it worth the $340.00
X2 your $ would be better spent elsewhere.nosigma said:I have them on my 4.0
cylinder head that is heavily ported with 3 side draft webers and a big cam sitting in my 1966 Rambler convertible. I run that motor up to 5750 rpm all the time.
Personally I wouldnt bother with it on an offroad engine that sees low RPM. Its not like I need the reliability or the extra hp in the rocks. Put the money towards gears if you need them, you will get more pulling power for the money spent.
John
MrShoeBoy said:I have roller rockers on my 4.6L stroker motor. I have built several other motors with out roller rockers including my old stroker and I HIGHLY recomend them. If you run any type of cam thats bigger than factory the factory rockers dont like it and will show some wear with in 60k miles. Plus the factory stamped rockers make all sorts of noise with a higher lift cam. I now run a Hesco cam with roller rockers, its so much more quiet than my old motor with a crane cam and factory rockers, and the Hesco cam is much more agressive than the crane.
AARON
rocklandxjer said:honestly, i dont really think roller rockers would have much of an impact on a non-high-performance motor. on a stroker that will see higher rpms and a greater amount of power/work, id say go for it. but a stock 4.0, i doubt you'd notice anything
i agree, spend the dollar signs somewhere else [perhaps first stroke it, THEN use the roller rockers]
MrShoeBoy said:Stroker motors see the same RPMs as the regular 4.0L motors. Just about everybody with a stroker motor in a Jeep is still using the factory ECU to run it and the rev limiter is still set at 5250rpm (HO motors). Reving the 4.0L regardless if its stroked or not past 5500rpm will blow it up. Cam harmonics will bust the timing chain.
Cuda, I always noticed a lot of valvetrain noise with my stroker with the factory rockers. When the roller rockers went on, that noise went away... Maybe the motor I had was just special? :dunce:
AARON
MrShoeBoy said:Stroker motors see the same RPMs as the regular 4.0L motors. Just about everybody with a stroker motor in a Jeep is still using the factory ECU to run it and the rev limiter is still set at 5250rpm (HO motors). Reving the 4.0L regardless if its stroked or not past 5500rpm will blow it up. Cam harmonics will bust the timing chain.
Cuda, I always noticed a lot of valvetrain noise with my stroker with the factory rockers. When the roller rockers went on, that noise went away... Maybe the motor I had was just special? :dunce:
AARON