Hey guys, I had been lurking for quite some time but decided to join up when I started my 4.7L stroker build a few months ago. When I get more time I will put together a build thread for it but for right now I just need to get it running. So onto my question, has anyone else had any experience with the Omix ADA 4.0L rocker arms? The first set of them that I bought got gouged inside the pushrod pocket areas just from rotating the motor over a few times to check the lifter preload. I had to take the valvetrain back out when I hoisted the motor into the jeep and that's when I noticed the gouge marks. They seem to be caused by the rocker arms having sort of a *flat* pushrod contact surface and not a rounded one. I ordered another set just to compare and the new ones also have the flat pushrod contact surface. Are they supposed to "clearance" themselves and then wear in fine after that? It seems highly unlikely but I have no idea how this company can mass produce them like that if they wont even remotely work. Any input? I'd like to get my engine started up on Christmas day, but I'd also like my motor to last.
Thanks for the help, -Mason
Omix ADA rocker arm issues
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- Where's the "any" key?
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Re: Omix ADA rocker arm issues
I don't think I'd buy any engine parts from Omix. Buy some Clevite, sealed power or Mopar rockers.The last time I checked, the clevite rockers were made in America.
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Re: Omix ADA rocker arm issues
Or you could buy a set of Harland Sharp roller rockers from Summit Racing.
1992 XJ 4.6 I6 - 5MT - Stroker build-up, Stroker "recipes" Sold
1995 Mustang GT - 4AT - Modded Sold
2006 Mustang GT - 5MT - Modded Midlife Crisis Car
1995 Mustang GT - 4AT - Modded Sold
2006 Mustang GT - 5MT - Modded Midlife Crisis Car

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Re: Omix ADA rocker arm issues
... or you can buy them from me.Cheromaniac wrote:Or you could buy a set of Harland Sharp roller rockers from Summit Racing.

Depending if you want adjustables's or non-adjustable's
I'll be able to save you over $50.00 to $100.00 from Summits prices on Harland Sharp roller rocker arm kits with custom rocker ratio options at no additional cost.
Thanks,
Merry Christmas!!
Russ Pottenger
Bishop-Buehl Racing Engines
531 N. Lyall Avenue
West Covina, California 91790
Cell (626) 673-2203
Work (626) 967-1000
Email/PayPal: [email protected]
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- Where's the "any" key?
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Re: Omix ADA rocker arm issues
Thanks for all of the quick responses guys. It was originally in my plans to go with the HS roller rockers but I am WAY over budget right now. However, seeing as I have spent $120 so far on two sets of crappy rocker arms, a set of roller rockers now seems reasonable for the extra insurance. So Russ, I will send you an email briefly to discuss options. Hopefully I will be able to return these stamped rocker arms for a full refund. Thanks again guys! I'll make sure to report back on my results.
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Re: Omix ADA rocker arm issues
The last new set I installed were "PIONEER" brand, that was some time ago?
You can get more power out of ANY engine!!!
ASE Master certified engine machinist, gas and diesel
ASE Master certified engine machinist, gas and diesel
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Re: Omix ADA rocker arm issues
Russ Pottenger wrote:I'll be able to save you over $50.00 to $100.00 from Summits prices on Harland Sharp roller rocker arm kits with custom rocker ratio options at no additional cost.



Merry Christmas 2U2 Russ.

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Re: Omix ADA rocker arm issues

Cheromaniac wrote:Russ Pottenger wrote:I'll be able to save you over $50.00 to $100.00 from Summits prices on Harland Sharp roller rocker arm kits with custom rocker ratio options at no additional cost.![]()
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Merry Christmas 2U2 Russ.

Wishing you the very best with your move,
and a very Merry Christmas back at ya my good Friend
Russ
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