quick346

iTrader: (4)

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

jed.only

iTrader: (9)

what did you do about all the loose grit?

Hilton

iTrader: (36)

That's pretty close to how we did Galen's.

As for the loose grit, you're taking the head back off anyway, just clean it out.

quick346

iTrader: (4)

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.

vettenuts

iTrader: (4)

Two thoughts. Make sure the guide has a lot of lubricant. Also, I would feel more comfortable using a spare valve rather than one for the actual head.

8a8mfh

iTrader: (3)

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.

quick346

iTrader: (4)

trust me i use these same disc to cut hardend d-2 tool steel wth a rc 60-62 that **** is hard as all hell.

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

8a8mfh

iTrader: (3)

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.

Horsepwraddict

iTrader: (12)

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

PREDATOR-Z

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.

02TransAm/Batmobile

iTrader: (32)

Where did you buy your tool 8a8?

405HP_Z06

iTrader: (11)

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.

Fratsit

iTrader: (1)

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.



R/

Frat

405HP_Z06

iTrader: (11)

I called Dave Lindy on a Monday and ordered the tools. I received them on Thursday; very fast service. This was with standard UPS shipping.

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.

Fratsit

iTrader: (1)

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

edcmat-l1

iTrader: (10)

Call me after you call them.........

Fratsit

iTrader: (1)

I'll call you first...

R/

Jeff

jsmcortina

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

Ericbigmac83

iTrader: (19)

waaaay too much work, i just overrevved my engine. made nice little flycuts

Fratsit

iTrader: (1)

Just talked to Dave over at Lindy tool and ordered my cutters for intake and exhaust. Great guy. Can't wait to get them and get started.

R/

Frat