I'll start a post on my conversion to Jesel parts. I'll update it as I get things done and pictures taken. I picked up a Jesel rocker arm kit for my Indy EZ heads and a Jesel beltdrive setup. Thanks to Scott Brown at Straightline for sourcing the parts.

Neither kit came with any instructions. The belt drive I can kind of figure out but instructions with pictures would be nice. I'm not sure if Jesel doesn't have instructions for the Mopar kit or if they just didn't include them in the box. The crank gear was 0.004 undersize so I sent it back to Jesel to be fixed or replaced. There was no way I was going to attempt a 0.004 press fit onto the crankshaft.

The rocker arms kit (KCS-07238) looks cool but without instructions it is a little hard to know where to start machining on the heads. The Jesel tech line said they didn't have machining instructions and to contact Indy. A fax to Russ at Indy hasn't yet resulted in any info so I'll keep trying. The rocker arms are 1.70/1.70 ratio with ball end adjusters.

One thing I see from the rocker arm kit is that it uses the 440-1 offset. Evidently Jesel doesn't have a standard offset kit for the Indy SR and EZ heads but it looks like they could easily develop one by just using the exhaust rockers on the intakes. I'm going to run that idea by Jesel to see what they say.

There is a forum on the Jesel website that is moderated by the Jesel markeing manager. So if you post a question up there he gets back with an answer within a day or two. I'll probably be using that forum for a few questions.

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One thing I see from the rocker arm kit is that it uses the 440-1 offset. Evidently Jesel doesn't have a standard offset kit for the Indy SR and EZ

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so there is a great big offset where you don't need it?

Looks like you took my advice Andy.

https://board.moparts.org/ubbthreads/show...rue#Post3140432

I would be more than happy to take the Comp's off your hands.

The Comp rocker arms are in use on my street 512, the Jesel setup is going on the 505 dyno mule that is being featured in some upcoming Mopar Muscle articles.

Yes, the Jesel kit has a 0.800 offset for the intake rocker arms which isn't required for the EZ heads that I own. I'll have to machine pushrod clearance in the heads in order to run the bigger offsets. I would have preferred a standard offset but as far as I could tell, Jesel doesn't offer such a kit off the shelf.

I also wonder why a lot of race parts come with no instructions I guess they think everyone knows their equipment

The belt comes with instructions for a BB Chevy. Jesel said thats what they ship with the belt, and it is the same basic installation. If you didn't get them with the kit, go to Jesels website as I'm sure they are on there.

It looks like I just need to machine down the existing rocker stands and I can reuse three of the existing drilled and tapped holes. I'll have to drill and tap another four holes for the rocker shaft stand. Jesel faxed me a drawing showing where the holes have to go but Indy hasn't provided me with info on how far to machine the stands down.

If I can't reuse the existing holes then it gets a lot harder. At that point I might be better off selling the heads unmodified and buying new heads that are already drilled and tapped for Jesel stands. I guess that is the big question of the day. So far I haven't figured out a way to answer that question without just going for it and machining the stands down. Maybe I'll try to take some dimensions first and put them into the CAD system to see what kicks out.

I put one of the heads up on the mill today and started to whack away at the existing rocker support stands. I never did hear anything from Indy in terms of machining instructions. I sent them a fax but they never replied so I'll just tear into it myself.

I took it down until I was just skimming the large support areas above the intake runners. I'm not too sure how far to go but I know I need to go at least this far since the stand has to bolt to these large pads.

Once I got it down to a smooth surface across the pads I bolted up the Jesel shaft just to double check. I'm using the existing end holes here as a temp hold down. The existing holes are 3/8 thread and the Jesel hardware is all 7/16 so all of the holes need to be redrilled and tapped.

Andy I have the pushrods (Smith Bros) and Comp lifters (offset intakes) you need for those rockers. PM if interested.

Andy, as always, you are trudging thrugh unmarked or grey area. It seems that you seriously care about the enthusiast. These are all parts that normal guys can afford, although the "big Guys " use these parts also. Cudos to you, always seeming to go the extra mile to see if things can improve with the parts that are put out there for us.. Thanks.. Seems like Jesel has alway had a good name, just seemed always out of reach..

andy, what size springs and cups are you using?

Thanks Rick, I figured since Indy and Jesel didn't provide instructions I'd just go ahead and document how to do this conversion. I actually think this Jesel setup is probably the way to go for guys who are getting serious with their motors. The Harland Sharp or Erson stuff costs almost as much but doesn't have some of the advantages that the Jesel individual shafts bring.

Acme - I'm going to be running PSI 1246 springs. They are 1.645 x 2.00 high with 300 lbs on the seat. I'm setting up the valvetrain so I can run .800 lift. My old springs were installed at 1.950 height so I just had to use some +0.050 locks to move up to a 2.00 installed height. It looks like that is about the limit for this setup. Much taller than that and the retainer will hit the rocker arm.

Now that I have it mocked up, I'm pretty sure that Jesel could easily make a standard offset intake setup using mostly the same parts that are in this kit. I'm going to talk to Jesel engineering next week about doing a custom kit for me so I can try it out. These exhaust rocker arms have .250 offset and it looks like that offset will work just fine on the intake side as well.

Check out the november 2006 issues of moparmax.com page 44. they show a jig used to set rocker stand height on jesel rockers.

Thanks for the link to www.moparmax.com, I hadn't seen that before. The interesting thing about that article is they said they got instructions from Jesel as well as a shaft checking tool. My kit didn't come with instructions or a tool. And when I called Indy they said they couldn't help me. Jesel tech line also told me that there weren't any instructions available for this kit and they didn't offer to send me a height checking tool.

I think I'll be back on the phone on Monday.

RT - I'm going to be using 1.645 diameter springs with Comp Ti retainers. The retainers tend to hit before the spring so I'm carefully watching the rocker to retainer clearance. The Comp retainers are about 1.500 inch diameter so they are a little smaller than the OD of the springs. Here is the setup with some checking springs installed. I don't see why the spring would hit before the retainer so I think the 1.645 should clear fine.

I mocked up a standard offset intake by using two of the exhaust rocker arms. As far as I can tell by looking at this and taking a bunch of measurements this setup will work just fine. I'll either need new shafts from Jesel or a some spacers to put on the existing shafts to take up the extra clearance. In this picture my mockup using two exhaust rockers is on the right. The setup on the left is the .750 offset intake that comes in the 440-1 kit.

I got a reply from Indy and they told me the location of the stand as well as how far to machine the heads. They said to machine the stands down until they are 0.500 inches above the tall head bolt counterbores.

I swung by the local circle track engine builder and he loaned me a Jesel shaft height checking tool. According to the tool I need to lower the shafts about 0.125 from where they are right now. That seems to agree with the number that Indy gave me so I think I'm closing in on it.

Here is a picture of the Jesel tool in action. The top of the valve tip is supposed to be flush with the top of the tool but in this picture you can tell that the valve tip is down in the hole a bit. So I need to mount the heads back up in the Bridgeport and mill the stands down some more.