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Re: Hughes Rocker Arms
[Re: Moparnut426]
#379187
07/23/09 04:32 PM
07/23/09 04:32 PM
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Joined: Dec 2007
Posts: 486
IL
knyech1
OP
mopar
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OP
mopar
Joined: Dec 2007
Posts: 486
IL
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Quote:
I have heard Hughes are accually Probe rockers, and If Im spending what they want for a non roller fulcrum and I have big money in my heads/engine, Ill spend another $200 and buy the Harland SHarps. I can get a set for my Brodix B1BA small blocks heads with an offset back shaft set up for large springs from Harland for $850. I have to save fo an extra 2 months, but I should be worry free for a LONG TIME!!!
Nothing wrong with the Hughes stuff, just dont like the fact they dont offer a bearing fulcrum.
Kasey
What worries me about needle bearing fulcrums is that there are more parts that could potentially fail. I have seen in two cases the races broke apart. Lot of parts that could fall out and distribute themselves through various parts of your engine. Has this happened to anyone else?
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Re: Hughes Rocker Arms
[Re: S/ST 3040]
#379189
07/23/09 05:53 PM
07/23/09 05:53 PM
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Joined: Dec 2007
Posts: 486
IL
knyech1
OP
mopar
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OP
mopar
Joined: Dec 2007
Posts: 486
IL
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Re: Hughes Rocker Arms
[Re: knyech1]
#379190
07/24/09 01:44 PM
07/24/09 01:44 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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What worries me about needle bearing fulcrums is that there are more parts that could potentially fail. I have seen in two cases the races broke apart. Lot of parts that could fall out and distribute themselves through various parts of your engine. Has this happened to anyone else?
I have wondered about the bearings failing, But in my research I have only found a failure when something else major fails, Keeper breaks, and the valve get impacted by piston, this hitting rocker arm with a mess, the timming chain breaks and a valtrain failure that way, I havent ever heard of a fulcrum bearing just failing, maybee an oil restriction, but I have asked many guys, and many different engine builders who havent ever heard of that. I do like the fact that with Jessel stuff the shaft is smaller, thuss the bearing is smaller whick in theory makes for less stress on the bearing. I have definate trust in the Harland stuff from seeing some of the spring PSI on some large CI mopars. Im also currious if anyone on here has heard of any other plain jane Harland sharp failures....
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Re: Hughes Rocker Arms
[Re: Moparnut426]
#379191
07/24/09 02:07 PM
07/24/09 02:07 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
... Im also currious if anyone on here has heard of any other plain jane Harland sharp failures....
Yep. Dwayne Porter has mentioned seeing HS failures (more commonly for small-block than big-block, IIRC).
I don't think Joe Average needs needle-bearing fulcrums w/ a pressurized shaft rocker system. Needle bearings are applicable to applications that rely on oil splash / mist for fulcrum lubrication. A plain bearing setup on a pressurized shaft distributes the load better than needle bearings, even if it doesn't look as sophisticated.
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We ran stock OOTB Crane gold rockers with a UltraDyne .613 cam and the suggested springs and never had a problem,and they had been used for 5 race seasons before that.
