Rocker arm differences

[96Formula6spd]

Hey guys I am working on my 2g Talon project and am deciding on the next step. My car had sat a long time and the rockers actually rusted in the head. Anyways was working on getting a replacement set. Got two sets from the junkyard over the last few months. First set were kinda dirty but finding a 4g63 is kinda rare. They came from a 93 eclipse non turbo. They are all the same rockers so no biggie there. A few months later I raided a 2004 Hyundai Sonata to get some 3g lifters. At the same time I picked up the rockers that were in that engine as its was the 2.4 4g64 dohc. Engine was nice and clean and was a wrecked car. So today I decided to go threw and see what I had. Ended up with this.

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19 Good ones, or they at least past round one inspection. 8 meh ones. They should probably be in the trash pile. And 5 junk ones.

So I was going threw since a few of the from the Hyundai and some are from an Eclipse in the good pile. No complete set from either car. Anyways length seems to match from front to back. Lifter holes look the same. However I did notice this.

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The oil feed hole is different. The hole diameter is the same or seems to be. Eclipse on the left (dirty ones) hyundai on the right. (clean ones). So now I am debating on pulling another set of rockers and trying to get a matching set. I really did not like the set that came out of the 93. It was a high mileage car and the rollers seem to have more play than the newer hyundai set. A few from the eclipse were shot due to the rollers. Engine was very dirty inside. I think it had 250k and the last few miles were not great to it. Granted it was a wreck so it was running. But that engine was black inside. So was there a change over on the rockers. Are the 4g64 different enough not to work. There are a couple 3000gt/steath in the junkyard. So I could raid a set of 24 from them or maybe another kia/hyundai set from a 4g64 dohc car. This was I could have a complete set. What would you guys do?

 

[FIBA M - EC17PSE]

Sorry i cannot help on the difference but maybe jafromobile says something about them in his video

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[96Formula6spd]

Sorry i cannot help on the difference but maybe jafromobile says something about them in his video

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He does not but all his sets come from a 1g or 2g. In a later video he goes to evo rockers. they are different but have the pinhole style of the later hyundai set. Since I am not happy with either set my plan is to go to the junkyard today. I need to go to raid a transmission yoke for a lemons car project. Will report back later.

 

[96Formula6spd]

So was at the junkyard. Ended up only finding one car at this pick and pull. This was a 2002 Kia. The other cars that would have had rockers were either missing engines or some of the kia/hyundais were v6 cars. So pulled a set from this kia. Another good clean engine. Car was super rusty on the outside but engine looked to be taken care of. Picked up a set of rockers. Well I think I got 3 or 4 from the set.

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Bad on the left good ones on the right. Separated by type. Kia and Hyundai ones are the same. 2002 and 2004 years. The dirty ones are from a 1993 eclipse. Right now I have 15/16 good Hyundai ones. There is one in the "should I really use it pile" that could be used to make a full set. Might have to hit another pick and pull.

They kia/hyundai seem to be failing on the vale tip area. Like this. Wonder if something was up in the valve train on these cars. I think the hyundai only had 140k and this kia was at 156k.

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The early set I have is not bad but its needle bearings are tired. The rollers are just kinda worn enough that I think they should just go into the trash pile.

New rockers are $23 each. At least that is the cheapest I can find them at moment. I don't want to spend $368 on rockers. Its not even in the budget to do so. Guess it might be another junkyard set. Guess I may try to find an older car. There are a few couple 3000gt in the other local yard. The earlier style seem to hold up better in the valve stem area. So might be what I need to do.

Any other ideas?

 

[FIBA M - EC17PSE]

There is a guy selling evo ones in the classified section, buy them as they are lighter and stronger then oem ones. or message folks on ebay breaking evos, will be around $100 ish but will be your best bet

 

[PlanZero]

Contact my buddy Norbert at DSMpartout.com (or FB) he'll sell you a good used set cheap, then you can stop wasting your time at the junkyard.

 

[FIBA M - EC17PSE]

Contact my buddy Norbert at DSMpartout.com (or FB) he'll sell you a good used set cheap, then you can stop wasting your time at the junkyard.

maybe he likes taking long walks and pulling parts!!!

 

[96Formula6spd]

Nothing wrong with the junkyards. Total I have $12 invested in the three sets. I think the current plan is to raid one more car. If I don't have a good set then its off to the forums to spend money.

 

[Archer Fabrications]

I want to bring this back with a new question, didn’t feel it needed a new thread.

I have an evo 9 and some of the rockers are failing where they sit on top of the valve. I was looking at my 2g dsm (7bolt head) rockers and noticed the holes in the dome that the lifters sit in has a much much larger hole then the evo rockers. They look a little different too, however even STM references the same part number for 1g/2g/evo8/evo9 this is sort of troubling. I dont recall mu machinist at the time of my dsm’s built motor modifying them. Can anyone confirm what size their hole is under the rocker dome? The evo one was literally pin hole size. While my dsm one has a much larger one (dsm rockers shown)

Reason I’m asking is I just replaced the ticking lifters on the evo, and still had some tick by the oil cap where the damaged rockers are, thinking it’s the rockers

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