Small V8
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Lakc
Well-Known Member
Slick looking for sure.
Thanks everybody!
Taking the night off, waiting for metal to come in the mail.
Taking the night off, waiting for metal to come in the mail.
Hello All!
Decided to do something easy tonight. I made the rollers for the rockers and the pins to pin the rollers. The rollers were a case of drilling the center and then parting them off a piece of 1/8 inch droll rod. The pins were just parted off a piece of 1/16 drill rod.
Decided to do something easy tonight. I made the rollers for the rockers and the pins to pin the rollers. The rollers were a case of drilling the center and then parting them off a piece of 1/8 inch droll rod. The pins were just parted off a piece of 1/16 drill rod.
Lakc
Well-Known Member
Thats some seriously small stuff. I always have a problem measuring such things on my lathe, I doubt I would get them all the same size. 
Lakc said:Thats some seriously small stuff. I always have a problem measuring such things on my lathe, I doubt I would get them all the same size.
You wont have trouble if you get that DRO for Christmas!!
Lakc
Well-Known Member
The DRO is for the Millport. I wouldnt waste a good dro on the lathe just to watch all the numbers jump around when I started a cut.stevehuckss396 said:
I have a pair of dial indicators that are adequate, but I need to investigate some kind of better base for the crossslide to get rid of a whole lot of unwanted flexibility. If I were to attempt to do what you just did, I would have to make a tooling setup to trim and part all in one shot.
Hello All!
Made some progress in the way of the rocker pivots. They were a little trickier than i thought they would be. These things are only .156 round and .250 long. Made all the barrels first. Just used .156 drill rod and parted off the pieces and used a file to break the corners.
I was able to set the barrel down on a parallel. I had one that is just smaller than the height of the vise jaw.
I started using a center drill to spot the hole but the drill kept wandering anyway. I did'nt know this but found that if i used the center drill to drill as deep as it took to make a starter hole that was just smaller than the drill, It would follow the spotted area and worked much better.
Then Just a drill bit to get the hole in it.
I don't have the nuts done yet but I could not resist putting 8 rockers together just to see what it looks like. Of course the valves would need to be put in also. Everything looks ok so far. I have also used some JB weld to patch up the water jacket fiasco and hope to complete the heads by the end of next week?
Made some progress in the way of the rocker pivots. They were a little trickier than i thought they would be. These things are only .156 round and .250 long. Made all the barrels first. Just used .156 drill rod and parted off the pieces and used a file to break the corners.
I was able to set the barrel down on a parallel. I had one that is just smaller than the height of the vise jaw.
I started using a center drill to spot the hole but the drill kept wandering anyway. I did'nt know this but found that if i used the center drill to drill as deep as it took to make a starter hole that was just smaller than the drill, It would follow the spotted area and worked much better.
Then Just a drill bit to get the hole in it.
I don't have the nuts done yet but I could not resist putting 8 rockers together just to see what it looks like. Of course the valves would need to be put in also. Everything looks ok so far. I have also used some JB weld to patch up the water jacket fiasco and hope to complete the heads by the end of next week?
Lakc
Well-Known Member
That looks like a million bucks! :bow:
agmachado
Well-Known Member
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Hi Steve,
Very cool your engine!
The position of the spark plug... Can do this affect the running of the engine ?
In your drawing, you put the spark plug on the side of the cylinder... it helps a lot for engines with small diameters, is that idea ?
Are you creating this engine or drawings are third-party ?
Best regards,
Alexandre
Very cool your engine!
The position of the spark plug... Can do this affect the running of the engine ?
In your drawing, you put the spark plug on the side of the cylinder... it helps a lot for engines with small diameters, is that idea ?
Are you creating this engine or drawings are third-party ?
Best regards,
Alexandre
Alexandre Machado said:
I doubt the location of the plug will affect it running at this size. They are there simply to keep them looking like the american V8. Most American V8 engines (work horses)are off to the side like that. As long as the plugs are in there somewhere, It should run.
The design is my own. I did take some ideas and general measurements from other engines.
I finally did it!!
I finally had some time to get the rocker arms done. I put a few together and tested the amount of actual rocking motion and of course, Not enough. I started the day re-cutting the slot by just a few thou. I might have gotten away with what I had but the pushrod length would have had to be exact so why fight it.
Then the counterbore was done. I had a club member regrind a #2 counter bore bit so the pilot was a few thou smaller than the tap drill instead of the clearance hole. I was able to then counter bore the bottom for a caphead screw.
Then all that was left was the tapping of the holes in the tail. Thru hole with 1/16 of material, what the heck. I used the "speed tap wrench" to get the job done.
After that I started to make the adjusting nuts but after 2 I didn't feel like doing them. I wanted to have some fun instead of the production line stuff that has been going on lately. I decided to make the air cleaner lid after looking at JPeter's V8. He has a cool air cleaner on his and I was thinking "I want one of those". So I spent the rest of the session watching the mill make me one.
Sorry about the crappy picture.
I finally had some time to get the rocker arms done. I put a few together and tested the amount of actual rocking motion and of course, Not enough. I started the day re-cutting the slot by just a few thou. I might have gotten away with what I had but the pushrod length would have had to be exact so why fight it.
Then the counterbore was done. I had a club member regrind a #2 counter bore bit so the pilot was a few thou smaller than the tap drill instead of the clearance hole. I was able to then counter bore the bottom for a caphead screw.
Then all that was left was the tapping of the holes in the tail. Thru hole with 1/16 of material, what the heck. I used the "speed tap wrench" to get the job done.
After that I started to make the adjusting nuts but after 2 I didn't feel like doing them. I wanted to have some fun instead of the production line stuff that has been going on lately. I decided to make the air cleaner lid after looking at JPeter's V8. He has a cool air cleaner on his and I was thinking "I want one of those". So I spent the rest of the session watching the mill make me one.
Sorry about the crappy picture.
Lakc
Well-Known Member
Looking real good there!
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Steve, the air cleaner looks great!!
Them rockers are incredibly complex little parts. :bow: :bow:
How did you hold them when counter boring? It looks like they are on a drill press with no fixture or vice. Is this just an "After" picture?
Kel
Them rockers are incredibly complex little parts. :bow: :bow:
How did you hold them when counter boring? It looks like they are on a drill press with no fixture or vice. Is this just an "After" picture?
Kel
