cheapest way to cut piston's check it out!!!
#1
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cheapest way to cut piston's check it out!!!
I have been planning on makeing a piston cutter but then had a new idea.
this may sound like bullshit but i just did it. works friggen great!!!!
I took a 2" 60 grit sanding disc and super glued it to the bottem of my 2" afr intake valve. at first i ultra copperd permatex'd one on but got tired of waiting so i tried super glue.
put the piston flush with the deck ,taped it off and put the head on with the valve in with the disc on it. took a measuremeant from the top of the valve to the giude and spun her with a electric drill till i had .080
and being that i cut size for size once the head gasket is on it will move the radious of the valve down away from the eyebrow because the valve will travel further on the 15 deg angle i beleive it is.
so now when i am done i will pull the pad off and reuse the valve.
total cost well nothing i took the disc from work but they are like 30-50 cent's per pad
so what do you guy's think.
I will put some pic's up as soon as i can locate my damn mini usb cable
mike
this may sound like bullshit but i just did it. works friggen great!!!!
I took a 2" 60 grit sanding disc and super glued it to the bottem of my 2" afr intake valve. at first i ultra copperd permatex'd one on but got tired of waiting so i tried super glue.
put the piston flush with the deck ,taped it off and put the head on with the valve in with the disc on it. took a measuremeant from the top of the valve to the giude and spun her with a electric drill till i had .080
and being that i cut size for size once the head gasket is on it will move the radious of the valve down away from the eyebrow because the valve will travel further on the 15 deg angle i beleive it is.
so now when i am done i will pull the pad off and reuse the valve.
total cost well nothing i took the disc from work but they are like 30-50 cent's per pad
so what do you guy's think.
I will put some pic's up as soon as i can locate my damn mini usb cable
mike
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yeah i tape off the whole ring land area. and then turn the valve fairly slow. pull the head vacuem most then wipe it clean and pull the tape.
you will have grit no matter how you cut them. but i would say it is extreamly important in this case to clean all the dust due to the silicon carbide or what ever the disk is made of.
you will have grit no matter how you cut them. but i would say it is extreamly important in this case to clean all the dust due to the silicon carbide or what ever the disk is made of.
#6
Thats great but it would never work on some things like a big block I did with forged pistons. I used a cutter from Lindy Tool, I cut .080 deep the whole diameter of the valve.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
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trust me
Thats great but it would never work on some things like a big block I did with forged pistons. I used a cutter from Lindy Tool, I cut .080 deep the whole diameter of the valve.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
no aluminum is even close to that. and it will cut full valve dia.
for my exh i have to glue the pad on then trim it down to just over the valve dia. same as with bigger than a 2" go with a 2 1/2 pad and trim it. or pay a couple hundred to rent stuff.
I am on a tight budget so i have to do what i have to. no way can i afford to spend a couple hundred to rent a tool.
just saying it works. and is cheap. not saying it is the best way just cheap
mike
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#8
Oh I bet it will, but it's a sanding disc by the sound of it. Bet it takes a while. How do you know how deep to go? You guess or stop, measure, stop , measure, etc.
The tool I used I bought for $107, you put it in, set the stop, cuts .080 in less than a minute.
The tool I used I bought for $107, you put it in, set the stop, cuts .080 in less than a minute.
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Very good idea, i would be a little worried about the valve guide, just keep it clean and lubed i guess.
I dont know why it wouldn't work on my friends SBC with twisted wedge heads instead of buying special slugs or getting the flycut. Sweet
I dont know why it wouldn't work on my friends SBC with twisted wedge heads instead of buying special slugs or getting the flycut. Sweet
#10
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You need to cut eyebrows bigger than actual valve size used. at least .040 bigger
Like if you cut for a 2.00 valve, you should cut 2.040 in circumference arc
Other than that, watch out for guide wear.
Like if you cut for a 2.00 valve, you should cut 2.040 in circumference arc
Other than that, watch out for guide wear.
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Thats great but it would never work on some things like a big block I did with forged pistons. I used a cutter from Lindy Tool, I cut .080 deep the whole diameter of the valve.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
Their tools are nice, they are shaped like valves but have four cutter blades on them and a depth collar so all your cuts are the same. And the only debris to clean up is pure aluminum.
I used grease to seal the piston to the cylinder wall, smeared it about 1/2" down and turned it to TDC, then used duct tape as a secondary seal.
I've got some real nice pictures that I am going to post, but I can't find the cable to get them to my laptop.
These can be had from Edge Tool Supply. The online pictures don't do them justice.
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I agree I just picked up the Lindy Tool In Head Piston Cutters (IHPC) for my Dart install. Very nice tools that fit right in the head without any modification. They also have angles cut into the back so they don't mess up the valve job.
I've got some real nice pictures that I am going to post, but I can't find the cable to get them to my laptop.
These can be had from Edge Tool Supply. The online pictures don't do them justice.
I've got some real nice pictures that I am going to post, but I can't find the cable to get them to my laptop.
These can be had from Edge Tool Supply. The online pictures don't do them justice.
I have been looking at buying the Isky tools from Thunder. Also, a general question for anyone..... I have 2.02 intake and 1.575 exhaust... what size cutters should I be asking for?
Thanks for the assist.
R/
Frat
Last edited by Fratsit; 12-18-2007 at 12:43 PM.
#14
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How long did it take for you to get them? Fast shipping?
I have been looking at buying the Isky tools from Thunder. Also, a general question for anyone..... I have 2.02 intake and 1.575 exhaust... what size cutters should I be asking for?
Thanks for the assist.
Good idea to the OP.
R/
Frat
I have been looking at buying the Isky tools from Thunder. Also, a general question for anyone..... I have 2.02 intake and 1.575 exhaust... what size cutters should I be asking for?
Thanks for the assist.
Good idea to the OP.
R/
Frat
If you purchase the Lindy IHPC, you order the exact valve size your cutting for. The tool has the radial valve clearance built-in. They are designed to provide a radiused cut instead of the sharp edges that other tools produce.
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Aaron,
Thanks for the feedback on the Lindy cutters. I will call them tomorrow to inquire.
To the original poster...my apologies for the short hijack...thanks for sharing the bandwidth....
R/
Frat
Thanks for the feedback on the Lindy cutters. I will call them tomorrow to inquire.
To the original poster...my apologies for the short hijack...thanks for sharing the bandwidth....
R/
Frat
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I've done similar. I took two old valves and used an angle grinder to cut teeth into them.
With this method there's no grit floating about, only aluminium swarf.
The proper cutters sound like a good deal though.
James
With this method there's no grit floating about, only aluminium swarf.
The proper cutters sound like a good deal though.
James