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Mancini Harland Sharp rockers? #1612093 04/25/14 10:38 PM 04/25/14 10:38 PM
Joined: Feb 2003 Posts: 637 Maryland USA B beatgoeson OP mopar
beatgoeson OP mopar B Joined: Feb 2003 Posts: 637 Maryland USA	I know its been asked but has anybody used the Mancinized HS rockers yet? The ones they call the bushed type even though they are not bushed. I like the no needle bearings but wonder about the alum. on steel shaft deal.

Re: Mancini Harland Sharp rockers? [Re: beatgoeson] #1612094 04/25/14 10:56 PM 04/25/14 10:56 PM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	same deal that crane roller rockers are...aluminum rocker on steel shaft...they dont seem to have any problems. Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: Mancini Harland Sharp rockers? [Re: beatgoeson] #1612095 04/25/14 11:04 PM 04/25/14 11:04 PM
Joined: Jan 2003 Posts: 1,025 Andrews,In. U.S.of A. 6 67_Satellite super stock
67_Satellite super stock 6 Joined: Jan 2003 Posts: 1,025 Andrews,In. U.S.of A.	Dissimilar metals,one harder,one softer, play together well in many other parts of the engine.No worries. Think about the Briggs&Stratton aluminum connecting rod with no "bearing" running on the crankshaft. They don't seem to have durability issues.

Re: Mancini Harland Sharp rockers? [Re: 67_Satellite] #1612096 04/25/14 11:14 PM 04/25/14 11:14 PM
Joined: Feb 2003 Posts: 637 Maryland USA B beatgoeson OP mopar
beatgoeson OP mopar B Joined: Feb 2003 Posts: 637 Maryland USA	Why do some people have bronze bushings installed on some rockers? I did run a set of old Isky iron arms riding on the shafts that did work fine. I Wish I still had them. I hope someone has bought the Harlands and can comment on how they liked them. They look like a decent deal.

Re: Mancini Harland Sharp rockers? [Re: beatgoeson] #1612097 04/25/14 11:32 PM 04/25/14 11:32 PM
Joined: Apr 2014 Posts: 8 NY G GeeTeeX33 member
GeeTeeX33 member G Joined: Apr 2014 Posts: 8 NY	I have been running the hughes engines aluminum roller rockers on my 440 for 3 years with a solid lift cam....no issues with wear. The harland sharp rockers should work out fine.

Re: Mancini Harland Sharp rockers? [Re: beatgoeson] #1612098 04/26/14 04:28 AM 04/26/14 04:28 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Quote: I know its been asked but has anybody used the Mancinized HS rockers yet? The ones they call the bushed type even though they are not bushed. I like the no needle bearings but wonder about the alum. on steel shaft deal. I have about 1500 miles on mine. The 1.6 ratio versions are natural finish while the 1.5s were red and blue. Mine are fine. One thing that impressed me is how the cranking compression numbers changed when I switched to the new aluminum arms. The numbers grouped together and were more even. This told me that the stock 1.5 stamped steel arms had some variance from the 1.5 ratio that they are supposed to be.

Re: Mancini Harland Sharp rockers? [Re: beatgoeson] #1612099 04/26/14 01:27 PM 04/26/14 01:27 PM
Joined: Dec 2004 Posts: 10,611 Rittman Ohio fourgearsavoy I Live Here
fourgearsavoy I Live Here Joined: Dec 2004 Posts: 10,611 Rittman Ohio	Quote: Why do some people have bronze bushings installed on some rockers? I did run a set of old Isky iron arms riding on the shafts that did work fine. I Wish I still had them. I hope someone has bought the Harlands and can comment on how they liked them. They look like a decent deal. If you run an aggressive cam ramp that requires a ridiculous spring rate you may experience galling as the rocker "squashes" the oil from between the rocker and shaft.The bushings are insurance to keep the rockers moving smoothly. If the Mancini bushed rockers would have been available when I had my Isky rockers done I would have bought them instead. There was a large discussion/debate about them on the race forum about weather they were bushed or not.The ones I seen at the Harlan Sharp DID have bushings but I have heard the latest versions don't Gus 8124960-004-001.JPG (120 downloads) 64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60

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