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  1. J

    Looking for cast iron bars

    interesting.
  2. J

    Looking for cast iron bars

    Most of my engines require small amounts under an inch diameter grey iron bar for rings, cylinders and other items. Until recently I've used bar from my stock. I've run out. Seems my goto supplier, McMaster Carr, isn't supplying grey iron in diameters useful to me any more, 1 inch or under. Does...
  3. J

    Comment by 'jpeter' in media 'IMG_20191211_175828'

    @Peter Twissell I 3d print mine. They look realistic and work well. Moulding is a good idea too but more work, I think.
  4. J

    Fuel and oil seperation

    I'll add 2 cents worth: I always burn Coleman fuel and try to use silicone tube. Some brands work and some don't. I find though Coleman brand fuel contains some type of contaminate which looks like fine wood shavings. These collect in my tank outlets, valves and carburetor needles. Thus, I...
  5. J

    positive crankcase ventilation

    Hey guys, I hate to admit it but my 4-stroke 8 cylinder 44cc engine burned a lot of oil, spit it out the exhaust pipe and smoked up the shop. Recently I tore into it making new oil rings, changing the piston design, re-honing the cylinders all which helped but it still smoked. The next fix which...
  6. J

    Jim builds his second v-8

    Well, I've been away from the forum for a while. Got back to the v8 and think I've gone about as far with it as I'm going to. My first v8 I named Victory. This one I named Ultimate Victory because it tested me to the max. It runs really well. It'll idle all day and not heat up. As expected, the...
  7. J

    Jim builds his second v-8

    Crossfire might be more from induction than insulation so I'm not too sure changing the wires will help much. Hopefully, some readers will offer some incite. Thanks though for the fine offer. If the drive wasn't so long I do it. More than wire though I'd like to see your shop. Anyway, I think...
  8. J

    Jim builds his second v-8

    Thanks Steve, I'll check it out.
  9. J

    Jim builds his second v-8

    It was running great until I loomed the ignition wires together. Must be getting lots of crossfire. Removed the loom, separated the wires and it returned to running well. I'm using 1/8 in. od test lead wire for ignition wire. It a little big too. If I could find smaller dia. wire, 22 gauge...
  10. J

    Jim builds his second v-8

    I was planning to go with the gear pump but after contemplating all the plumbing and pump drive mechanism needed the splash system looked quicker. Found though putting dippers on v8 rods more challenging than expected. Keep in mind the splash dippers on the caps of a v8 don't come straight down...
  11. J

    Jim builds his second v-8

    Well cool weather's here so I got back into the shop for the New Victory. Ground the crank, made new rods, redesigned the cam and recut it. I need to show videos and photos of how that was done. Developed a pretty slick method, for me at least, of cnc'n the cam. Finally got it running. Had lots...
  12. J

    Jim builds his second v-8

    Pretty convinced the cap came off. Then when the crank came back around it smacked the rod. Could have broke the cylinder. Glad the flywheel came loose. Got lucky. Not gonna be too hard to fix. Not real happy with the play in all the rods. Might just make all new ones. First time the v8's been...
  13. J

    Jim builds his second v-8

    Had a bad day at the Detroit Maker Faire. The V8 took a dump in the first 5 sec run.
  14. J

    Jim builds his second v-8

    Great picture. That helps a lot. That's pretty much like what I'm going to do.
  15. J

    Jim builds his second v-8

    Thanks, wondered who you were. Now I know.
  16. J

    Jim builds his second v-8

    I've had tougher projects. I'm still thinking about it. I think I can do it.
  17. J

    Jim builds his second v-8

    I'm wanting to make an oil pump. Gonna drive it off a gear off the cam, same gear from which I drive the distributor. Thought a gear pump would be the way to go but after looking at some designs it seems auto motors use what's commonly called a gerotor pump. Anybody ever make one of those? Can...
  18. J

    Jim builds his second v-8

    No doubt the dipper works but in my case the oil pan's not deep enough. I've been thinking about remaking the oil pan. Currently it's like an automotive one with a deep reservoir on the rear. I'd like to stick with that design. Still thinking about that. No doubt everyone knows this but me: I...
  19. J

    Jim builds his second v-8

    Nah, I went down to 9/32 from what was 5/16. Some earlier quote I said I was grinding 0.005 per pass. What I should have said was I reduced the diameter 0.005 per pass. I took lots of passes, more on some journals than others. Took the mains down from 7/16 to 13/32. The bushing in the rear main...
  20. J

    Jim builds his second v-8

    I spin it slow as I can go, in reverse too. I have a Sheldon with variable speed drive. I think 150 rpm would be close. I misled you on the depth cuz my lathe cross feed reads in diameters. I really cut only 2.5 mill dp but reduce the diameter by 5 thou. That's quite a difference when grinding.
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