Camshaft gun drilling source? | Page 2 | FerrariChat

Camshaft gun drilling source?

Discussion in 'Technical Q&A' started by mk e, Mar 27, 2008.

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  1. wildegroot

    wildegroot Formula 3
    Professional Ferrari Technician

    Nov 19, 2003
    1,522
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    Wil de Groot
    No, it's the left outer boot and the grease is everywhere. I'll find out tomorrow if the joint survived.
     
  2. wildegroot

    wildegroot Formula 3
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    Nov 19, 2003
    1,522
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    Wil de Groot


    Mark,

    For deep hole drilling call Hanner Industries @ 215-785-5260. Ask for Irvin. I think they are in the lower Bucks County/Langhorne area. Good luck.

    Wil
     
  3. mk e

    mk e F1 World Champ

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    Thanks, I'll give them a call.
     
  4. mk e

    mk e F1 World Champ

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    I fax over a drawing this morning and they called me back about an hour ago. He send no problem, they can hold .030" total run out and straight withing a few thousandths.....$250 each. Not in the budget unless there is no other possible option.

    It looks like I'm going to try 1 myeslf and see how it turns out. I've got a 15" 5/16 bit and a 24" 3/8" bit. I won't get to it tonight, but maybe tomorrow or the next night.
     
  5. anton

    anton Karting

    May 8, 2004
    107
    Thompson gundrilling, Van Nuys, CA has done them for me in the past.
    Anton
     
  6. mk e

    mk e F1 World Champ

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    Anton,
    Do you remember what they charged?
     
  7. anton

    anton Karting

    May 8, 2004
    107
    No, I don't- it was a long time ago. I do know they're still very much in business. Google them.
    Sorry I can't be more help.
    Anton
    BTW, that's some project you've got there. I'm impressed!
     
  8. luckydynes

    luckydynes F1 Rookie

    Jan 25, 2004
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    FWIW after painting my control arms silver I can see the outer boot contacts the upper control arm during rear end squat/max suspension travel.
     
  9. wildegroot

    wildegroot Formula 3
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    Nov 19, 2003
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    Interesting. I'll check that out.

    It turns out though, that the boot failure was a good thing - discovered that all the joints were getting loose on the half-shaft splines. It looks like maybe the extra ponies are not helping matters down there. I have 4 new joints coming and hope they'll still fit snugly on the old shafts.

    Thanks for the in-put.

    Mark, how are your CVs and half-shafts holding up?
     
  10. Lee in Texas

    Lee in Texas Formula Junior

    Oct 21, 2006
    685
    near Austin, TX
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    Lee
  11. luckydynes

    luckydynes F1 Rookie

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    You got some power . .. check for cracks on your lower control arms . . . find them on both of my cars (one's a stocker not owned long) and turboqv found the same cracks.

    Also make sure there's a belleville washer behind the CV joints against the shoulder on the shafts . .. kinda preloads the inner "star" against the snap ring.
     
  12. ernie

    ernie Two Time F1 World Champ
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    Winchester?

    :p
     
  13. Mark 328

    Mark 328 Formula Junior

    Nov 6, 2003
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    Mark Foley
    Depending on your equipment, the cost of the material, and the amount of excess material available you could probably drill these holes yourself. In my earlier days I started an apprenticeship for mold making (then finished as Tool & Die) and we used to drill deep holes in mold plates, for coolant, in a drill press. We would mount an angle plate to the table on the drill press with one side on the table and the other hanging down towards the floor. With this set-up we would clamp the mold plate to angle plate and indicate it in. As the depth of the drill press was reached I would lower the plate on the angle plate and drill some more. I recall drilling 3/8" holes probably 18" deep in plates about 1 1/2" thick. We had drill bits of different lengths. The holes would intersect cross drilled holes at the bottom to make a "loop" for coolant flow. I was always nervous doing those, but they always worked-out. We used water based coolant at first then as the hole got deeper we would switch to sulpherized cutting oil. The cutting oil would facilitate chip exhaustion. The drill bits should be sharpened on a machine because any inconsistency in the point can show-up as a angled hole. (these were about the only drill bits we sent out for sharpening)
    In your case, if there is excess material on the diameter (which it sounds like) you could drill the hole then countersink both ends and put the bar on centers in a lathe and cut the OD concentric to the holes. Also, you would have to affix another vertical bar on the angle plate to locate the bar. When staring the hole I would recommend using one of those piloted drill bits like a Dewalt pilot point drill. Although I never tried it when I worked in the field, I’m sure those pilot points would be much better for deep hole drilling because they eliminate the point of the drill sliding around to “get a bite” and the result is a very precise hole with a lot lower drilling energy requirement.
    Sorry for rambling, but its early and I’m up!

    Mark
     
  14. mk e

    mk e F1 World Champ

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    That's about what I'm thinking, just drill it then turn the OD on centers to get it all straight again. The only difference is I'm thinking of using the 90* head and drilling sideways thinking it will be easier to clear the chips then if I drill vertical.
     
  15. Mark 328

    Mark 328 Formula Junior

    Nov 6, 2003
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    It has been my experience that when drilling those deep holes, you really need to "feel" how things are going: chip exhaustion, binding, cutting and it will be hard to feel anything in a lathe or especially with a 90* head. A lighter-weight drill press provides the best feel. In the gun drill operations I have seen; the part is rotated (like a lathe) and they use a bit with holes thru the length to pressure feed sulpherized oil. When the hole gets deep chip binding/bit breaking are the common enemies.

    Mark
     
  16. mk e

    mk e F1 World Champ

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    #41 mk e, Apr 14, 2008
    Last edited by a moderator: Sep 7, 2017
  17. ernie

    ernie Two Time F1 World Champ
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    You sure are getting your money's worth out of that machine, aren't you.
     
  18. mk e

    mk e F1 World Champ

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    That's what cheap people do. I also just took the grass I dug-up in the mulch beds and replanted it in the bare spots around the yard so I don't need to buy grass seed, fertilizer, and water too......I want to be a stooge :)
     
  19. Mark 328

    Mark 328 Formula Junior

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    Very accommodating!
    The main problem we had with drilling those deep holes was with chips binding-up. If you take your time & keep the chips clear you should be fine.
    The drill bit looks new so that should help too.
    Looks like you are running it dry? no oil or coolant?

    Please keep us posted.

    Mark
     
  20. mk e

    mk e F1 World Champ

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    #45 mk e, Apr 15, 2008
    Last edited by a moderator: Sep 7, 2017
    These machines are very very flexible for sure. The Chinese version I have takes a little more time to get everything straight than a really Bridgeport, but it works

    I got the first hole in just over 14” and got the second side in about 7” before nap time was over and I had to go play dad again. I’ll find out if this worked and the hole match up tomorrow.

    I’m using lots of cutting oil, it just wasn’t in the first pic. I’ve always hard better luck getting it into the hole deeper drilling, although I’ve never tried anything like this…it does seem to be working pretty well though. I’m going about .300, hit the zero on the readout, then rapid the bit out, clean and oil then rapid back in to about .200-.400 off the bottom and start hand feeding. If I go much more than .300 the bit comes out smoking and there are a lot of dry chips, so I stay to .300. No rush.
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  21. ernie

    ernie Two Time F1 World Champ
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    Oh your a Stooge alright.
     
  22. mk e

    mk e F1 World Champ

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    :)
     
  23. mk e

    mk e F1 World Champ

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    #48 mk e, Apr 16, 2008
    Last edited by a moderator: Sep 7, 2017
    I got the 5/16" hole through tonigh and it looked pretty goo in the middle the best I could see any way. I started the 3/8" hole and it's in about 18" and looks to have cleaned up the center. So far so good, I can go about an inch and a half in before I need to clear the chips. Another 3 weeks of drilling and I should have all 4 cams done :)

    I've been basically double posting here and the v12 thread, but since the drilling is worked out now, I'll going to just post on the the V12 thread where the progress has more relavence.

    http://www.ferrarichat.com/forum/showthread.php?p=137636279#post137636279
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