1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

The Typhoon Build (Hopped Up F-Head)

Discussion in 'Builds and Fabricators Forum' started by Lifesgoodhere, Aug 22, 2009.

  1. Aug 25, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    OK ran into a snag.

    I opened THE BOX, as I call it, where I put pretty much everything for my engine in well over 8 months ago when I took it apart. I labeled and tagged everything, but (don't you hate buts?) somehow I scratched the bearings?! not badly, you can see it, and BARELY feel it. Hope I don't automatically need new bearings! I am taking it to a friend tomorrow to inspect (retired machinist).

    Also, looking at my exhaust valves. Lots of carbon (funny I forgot about them) I don't want to wire wheel them so I am going to my friends shop later this week and glass beading them and re surfacing, and lapping them. Might run a shrinker through the valve guides to remove some play. How much play is too much. I might have .0075 play? hard to tell, but you and easily see and feel them wiggle.

    also missing some valve keepers. I will look in my junk boxes for some I remember cleaning some awhile back.
     
  2. Aug 25, 2009
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    You mean knurling tool. I doubt there is supposed to be more .002" clearance on the valves shaft, most motors are around .0015"
     
  3. Aug 25, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    yeah thats the tool, forgot the name. I am going to take my chances. it dosn't seem like enough to matter. After looking at it when I was awake (and a little more sober) it might be closer to .0020 or maybe less. I don't do it for a living so I don't have the "feel" perfect.

    I went to the retired machinist with my berings today...good news, I should't worry about it I have a bur or two, but he said 2000 grit sand paper and VERY slight scuffing will remove them.
     
  4. Aug 28, 2009
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    Why not do it right and replace the valve guides while you have it all apart?
     
  5. Aug 28, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    engines only got 8,000 miles on it. I think rust corroded the valves. I will knurl them tomorrow.

    I did the head already, got a good fit their, and got a 3 angle valve job for free!
     
  6. Aug 29, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    Found out I got worn out valve stems, not guides. $5 a piece for new ones is just fine with me. The guy said that new ones would bring the tolerances back to normal. Stems were worn .013....A LOT. Then I look back at the build sheet (from the 80s), valves were just re ground, nothing else was done to them, explains that mess.

    New valves and hardened exhaust seats? he said I need to re seat the new valves? I thought just lapping then would do the trick, the hard seat doesn't wear right?
     
  7. Aug 29, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    Murphys law: What ever can go wrong, will go wrong.

    how true

    I dropped a rod bearing and it hit some differential gears I had on the floor, and the other one I was holding bounced under my work bench (its scary under there)

    but got the crank in and cam in (forgot order of things and forgot about the front plate dumba** me)

    PICS>

    first one is the dropped bearing, second one is the bearing that hid under the table, and the third one is the other two good ones...the rest are just for show.

    [​IMG]

    [​IMG]

    [​IMG]

    ------------------------------

    [​IMG]

    [​IMG]

    -------------------------------

    I use Indian head on the freeze plugs, first time I ever used it...works nice.

    [​IMG]
     
  8. Aug 29, 2009
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,348
    (not tryin to be an ***)

    When building an eng cleanliness is next to godliness, pick up your stuff...................
     
  9. Aug 29, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    I got no where to put it. all my storage areas are cramped already, and the junk can't sit outside.

    Notice the box of Carb cleaner. thats clean enough
     
    Last edited: Aug 29, 2009
  10. Aug 29, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    I agree.

    Are those bearings used?
     
  11. Aug 29, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    yes, with 8,000 miles on them.
     
  12. Aug 30, 2009
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Why? You can tell from the photo that they have wear on them. If your trying to build something for power why put used bearings in it.
     
  13. Aug 30, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Have you plastigaged the bearings?
     
  14. Aug 30, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    $$$ issue I planed $500 give or take $100. Relax, I can replace the bearings later if i have to, not like I haven't done it before on the creeper under a rig. Yes they have wear, yes, it was 8,000 HARD miles, but the bronze isn't even close to showing. They still got plenty of life left.
     
  15. Aug 30, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    So, you've measured/ plastigaged them....
     
  16. Aug 30, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    up, and it is well within clearance tolerances..its just the stupid nicked rod bearing holding me back now..
     
  17. Aug 30, 2009
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
    Messages:
    1,381
    Bearings have nothing to do with horsepower....
     
  18. Aug 30, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    :? I didn't read the whole thread again, but was that an issue?
     
  19. Aug 30, 2009
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Sure they do. Crappy clearance will eat up hp and oil pressure and drag other things down along the way.
     
  20. Sep 1, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
    Joined:
    Feb 14, 2009
    Messages:
    265
    I splurged. 4 new sets of rod bearings, and 4 new exhaust valves. $~100. Walck's was $2 cheaper than I could get them at work. $10 cheaper on the exhaust valves.

    Lap the valves in, and squeeze in the rods and pistons and finish all the other crap it takes to get a long block together and then I will have to let it sit for a month or so so I can work on selling some of my junk.

    Also to start Grade 8 (1963 CJ-3B)

    ordered Tuesday, stuff usually take a day and a half to get here, Friday is my next free evening, I will report then.

    Till then, I'll be keeping my nose out of the 50/50 mix of STP oil additive and 30w.
     
New Posts