Did I miss the memo on dart heads?
06-28-2006, 04:37 PM
#1
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Did I miss the memo on dart heads? I guess I am the only person around that didnt know you had to grind the alignment tabs off the bottom of the rocker plates. The damn plates are so soft I couldnt even tell they cracked when I put the rockers back on. Two corvette installs, 2 sets of broken rocker plates. Anyone else have this happen to them?
Brandon
Brandon
06-28-2006, 05:26 PM
#4
Yes you missed it.
Originally Posted by Dart331Stroker
We have made a change in this jsut recently, so item machined after 4-10-06 will have date codes stamped on them, and we moved the machining .100 towards the centerline of the valve cover boss, this should help out with Crane fitment. It will also allow Jesel, T&D, and Comp shaft systems to fit.
Thanks
John
Dart
Thanks
John
Dart
06-29-2006, 07:07 PM
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Originally Posted by molson
There is a tech sheet thats supposed to come with these heads.
If you want I can send it to you.
If you want I can send it to you.
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06-30-2006, 03:17 PM
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Machining change 4-10-06 is when we started machining the extra .100 towards the centerline fo the valve cover bolt hole centerline. As for the sheet saying use Comp Cams guide plates, sounds like the wrong sheets were in the box. I will check with our shipping and receiving department as to why this would occur. We cast the boss larger so the tabs need to be removed to allow the bar to sit flat. The reason for the larger tab is simple, Jesel and T & D offer systems that use larger fasteners and when you open up the stock heads for the larger fasteners with big spring pressures it breaks the bosses off, so we increase the bolt pads size. Unfortunately this has caused some issues with guys using the stock rocker bar, simple fix, but I know it would be nice to not have to do it.. I will check on the sheets and make sure it gets corrected.
Thanks
Thanks
06-30-2006, 03:56 PM
#11
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https://ls1tech.com/forums/generation-iii-internal-engine/527591-dart-gm-rocker-stand-clearance-issue.html
This came up a week or 2 ago!
This came up a week or 2 ago!
06-30-2006, 04:05 PM
#12
Originally Posted by Brian Tooley
I try to stay up to date on head issues on here and I haven't heard anyone talk about this. I AM BOLTING ON A SET OF THESE ON A BUDDYS ENGINE and the heads DO NOT have the slots machined in the head to clear the locators on the stock GM rocker stands. If anyone from Dart is listening or cares, please machine the slots in your heads, I'm thinking about 10 seconds of CNC time would save cutomers some aggravation. Thanks.
How well did they perform Brian?
Last edited by gollum; 06-30-2006 at 06:32 PM.
06-30-2006, 06:08 PM
#13
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Well maybe I should read EVERY post before installing each part, maybe I should have the since to realize the tabs dont clear the bosses, or maybe the heads come with a document that clearly defines the issue. Both sets were purchased within the last 30 days FWIW, and in sealed dart boxes.
Brandon
Brandon
