a light stone dressing every other valve keeps chatter to minimal. the surface can be amazing. having a selection of stones with different angles makes multi angle valve jobs nice. i love old stone set ups. then lap, it's on!
Your valve seat concentricity gauge is f....d, "Not accurate" If your valve guide pilot is Not worn, and the driver bushing for your stone is not worn, you simply will not get a better job than the stones can do when carefully dressed with the diamond dresser. In fact, it may be old, slow and antiquated, but if you know how to use the equipment, it will show up "the best expensive CNC seat cutting machine on the market in regard to seat concentricity. "Fact!"
Ever try a 35 or 40 degree valve seat for a better low lift flow numbers like DV says in his book? Was wondering if it would make more low end torque for towing on a more street drivin motor. I have several sets of E7TEs to port an experiment with on different builds..the wife says im a hoarder.lol
I have only done it twice. Once on my 59 Willys jeep engine that had a very low lift cam and a set of aluminum Corvette heads. Does it really make more low end torque? Good question...
@@servediocylinderheads Several diesel engines have seat angles between 25 and 35 degrees i think..but diesel is a different animal since it's unrestricted airflow
Thanks for another great video in "The complete cylinder head video series" I bought an almost unused Sioux set up at an auction. It came from a school. I think it was used once to show what it does and put back in the case. The driver is a bit different in that it has a much longer shaft. Kind of looks like a gigantic die grinder. I have used it a bit but will now have a bit more confidence when I use it again. Andrew
Nice video Charlie. Just a couple of observations. I always put just a drop of oil on my pilots to help stop the wear, and wipe them clean regularly during the job, then reoil them. You might be doing this but we just didn't see it. If you have a little wear on your pilot in might be throwing your concentriity gauge off, a little oil might help take up a fraction of the wear. Recently I've been looking at some of the carbide seat cutter units from China. Both in small manual form, and larger Serdi type format. Looking at them, they might not have the long term durability of a name brand machine, but price wise they are a fraction of the cost and use the same carbide cutters. As I'm not on the machine every day it's a lot easier to justify the outlay, and it will definitely out last my career. Time is money, but money is money, so I haven't jumped yet. But being able to cut to the same height on all seats in a fraction of the time has its advantages. Regards Greg
Great video and thanks for instructions yes! Charles if you ever offer a t-shirt I would like to buy one where it says right on the money :D Nice working, thumbs up!
Thanks for the instructions! Just picked up one of these and that explains a lot on how to use it correctly. Never done it before but love to learn! Keep up the good work!
Thanks for the advice. I'll keep that in mind. I have an old set of junk heads to practice on until I get the hang of it. I'm also trying my hand at porting them following your methods and stuff I see on other channels as well. I appreciate all you guys that put out content to teach us newbie's!
Thanks for the detailed video. I've the same Sioux it's the samas the one I used in vocational school. That I used on my first 461 heads. I was 17 when I done them and being careful using DV book or Smokey's.i got the valves to seat were they should be. I still don't know how I was able to do it. And I always wondered why the motor speed was so fast.
@@servediocylinderheads I 327 flat top. The old cam Dymactics 230@50 480 lift 112 LCA I think stock rocker arms and I tried the Rhoads lifters. 8004 weiand. 800 Q-Jet . It ran great idled smothe..and had more low end torque than what I expected. I was 17 and didn't have much money. Back in 84
@@servediocylinderheads I think I did some bowl work and some other minor minor porting. Th 8004 had bigger openings than the stock gaskets. That was strange for a dual plane.
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a light stone dressing every other valve keeps chatter to minimal. the surface can be amazing. having a selection of stones with different angles makes multi angle valve jobs nice. i love old stone set ups. then lap, it's on!
They can do an excellent job.
Great video!!!
Thanks!
Your valve seat concentricity gauge is f....d, "Not accurate"
If your valve guide pilot is Not worn, and the driver bushing for your stone is not worn, you simply will not get a better job than the stones can do when carefully dressed with the diamond dresser. In fact, it may be old, slow and antiquated, but if you know how to use the equipment, it will show up "the best expensive CNC seat cutting machine on the market in regard to seat concentricity. "Fact!"
My gauge is getting on in years. Lots of use.
Ever try a 35 or 40 degree valve seat for a better low lift flow numbers like DV says in his book? Was wondering if it would make more low end torque for towing on a more street drivin motor. I have several sets of E7TEs to port an experiment with on different builds..the wife says im a hoarder.lol
I have only done it twice. Once on my 59 Willys jeep engine that had a very low lift cam and a set of aluminum Corvette heads. Does it really make more low end torque? Good question...
@@servediocylinderheads Several diesel engines have seat angles between 25 and 35 degrees i think..but diesel is a different animal since it's unrestricted airflow
Would an air injected pilot to create an air bearing work ?
I have no idea.
Thanks for another great video in "The complete cylinder head video series" I bought an almost unused Sioux set up at an auction. It came from a school. I think it was used once to show what it does and put back in the case. The driver is a bit different in that it has a much longer shaft. Kind of looks like a gigantic die grinder. I have used it a bit but will now have a bit more confidence when I use it again. Andrew
Sounds like the air frame kit. Designed for airplane engine service.
Nice video Charlie. Just a couple of observations. I always put just a drop of oil on my pilots to help stop the wear, and wipe them clean regularly during the job, then reoil them. You might be doing this but we just didn't see it. If you have a little wear on your pilot in might be throwing your concentriity gauge off, a little oil might help take up a fraction of the wear. Recently I've been looking at some of the carbide seat cutter units from China. Both in small manual form, and larger Serdi type format. Looking at them, they might not have the long term durability of a name brand machine, but price wise they are a fraction of the cost and use the same carbide cutters. As I'm not on the machine every day it's a lot easier to justify the outlay, and it will definitely out last my career. Time is money, but money is money, so I haven't jumped yet. But being able to cut to the same height on all seats in a fraction of the time has its advantages. Regards Greg
I did that in the 80's. It made the nasty stone dust stick.
Great video and thanks for instructions yes! Charles if you ever offer a t-shirt I would like to buy one where it says right on the money :D Nice working, thumbs up!
I would sell 1.
Thanks for the instructions! Just picked up one of these and that explains a lot on how to use it correctly. Never done it before but love to learn! Keep up the good work!
Nice!
Work at keeping your seat heights close!
Thanks for the advice. I'll keep that in mind. I have an old set of junk heads to practice on until I get the hang of it. I'm also trying my hand at porting them following your methods and stuff I see on other channels as well. I appreciate all you guys that put out content to teach us newbie's!
@@michaelwestra9861 Everyone was a newbie at some point.
👍💪
Thanks for the detailed video. I've the same Sioux it's the samas the one I used in vocational school. That I used on my first 461 heads. I was 17 when I done them and being careful using DV book or Smokey's.i got the valves to seat were they should be. I still don't know how I was able to do it. And I always wondered why the motor speed was so fast.
461's run real well if done right.
@@servediocylinderheads I 327 flat top. The old cam Dymactics 230@50 480 lift 112 LCA I think stock rocker arms and I tried the Rhoads lifters. 8004 weiand. 800 Q-Jet . It ran great idled smothe..and had more low end torque than what I expected. I was 17 and didn't have much money. Back in 84
@@dondotterer24 I bet it ran real well.
@@servediocylinderheads I think I did some bowl work and some other minor minor porting. Th 8004 had bigger openings than the stock gaskets. That was strange for a dual plane.