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Old 06-16-2017, 08:13 AM   #1
9724VF350
 
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Cummins Carillo rods

Anyone tried drilling the tops of them to get some oil to the wristpin? Seems like it would be a good idea. Getting ready to put a set in and thinking about poking a hole in the top of them first.
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Old 06-16-2017, 08:19 AM   #2
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Quote:
Originally Posted by 9724VF350 View Post
Anyone tried drilling the tops of them to get some oil to the wristpin? Seems like it would be a good idea. Getting ready to put a set in and thinking about poking a hole in the top of them first.
I thought clearancing them on a 6.7 was a must for this reason. Thought it was something like .4 or .04 can't remember.
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Old 06-16-2017, 08:55 AM   #3
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I thought clearancing them on a 6.7 was a must for this reason. Thought it was something like .4 or .04 can't remember.
I think what you're referring to is on the cap end for oil flow. I plan on doing that for sure. .040 off each side of the cap should do it.
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Old 06-18-2017, 10:09 AM   #4
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Most people are taking .015 off a side.
I took .020 off a side.

Last edited by Blueboy; 06-18-2017 at 10:14 AM.
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Old 06-18-2017, 11:55 AM   #5
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Does D&J do this on their rods? I've asked different people including some pullers and they think I'm wrong about milling the cap sides.
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Old 06-18-2017, 05:00 PM   #6
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Yes they do. Not the entire side of the cap, but there is a spot machined for oil to get away.
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Old 06-18-2017, 05:01 PM   #7
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In reference to the original question, some people drill (EDM maybe?) a galley down the length of the rod to lube the pin. That's the route I'd look into
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Old 06-18-2017, 05:03 PM   #8
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That would be my preference, but the web in these rods is not thick enough for me to feel comfortable doing that.
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Old 06-18-2017, 05:21 PM   #9
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True. Too late to trade up to a set from D&J or wagler? I think they both drill theirs
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Old 06-18-2017, 05:43 PM   #10
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Quote:
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That would be my preference, but the web in these rods is not thick enough for me to feel comfortable doing that.
very little strength is gotten from the "center " of beam.
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Old 06-18-2017, 06:14 PM   #11
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I've seen several sets that have two holes drilled on the top for such a purpose, probably about a 45 angle from centerline on either side. I think that would be a pretty easy maneuver for a hobby machinist/farmer to pull off

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Old 06-19-2017, 12:39 AM   #12
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I ordered .080 longer Wagler rods a couple months ago and still haven't seen them yet. But reasoning I went for them is they do have a lube hole in the wrist pin end and caps come already clearanced.
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Old 06-19-2017, 06:16 AM   #13
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D&J's X beam rod is drilled through the center from the rod bearing to the wrist pin to "pressure lube" the wrist pin. This is a lot different then just drilling a hole in the cap.

Lavon
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Old 06-19-2017, 07:23 AM   #14
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D&J's rods I think are the best design no doubt.
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Old 07-01-2017, 02:03 PM   #15
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Quote:
Originally Posted by 9724VF350 View Post
Yes they do. Not the entire side of the cap, but there is a spot machined for oil to get away.
What I meant to ask is if anyone knows if D&J machines the Carillo caps for oil shedding?
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Old 08-30-2017, 02:32 PM   #16
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On the rod cap machining for oil to escape, are you guys doing .020 on each side or one side only? Would it be better to do more on one side versus both sides?
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Old 08-31-2017, 11:47 AM   #17
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Quote:
Originally Posted by 9724VF350 View Post
Anyone tried drilling the tops of them to get some oil to the wristpin? Seems like it would be a good idea. Getting ready to put a set in and thinking about poking a hole in the top of them first.
The last set of CR Carrillo rods I installed had 2 holes at the wrist pin side, at about 45 degrees from the top.
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Old 08-31-2017, 06:33 PM   #18
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I'm going with D&J. Their rods and pin oiling along with their forged piston are too good to pass up.
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