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Dart270
PostPosted: Wed Aug 22, 2007 10:39 am 
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Hey Folks,

I would like to put valve reliefs in some pistons that are already mounted on rods. Does anyone know where to buy these cutting tools that go through the valve guide and spin with a drill to put valve notches in the pistons?

Thanks,

Lou

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Dart270
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PostPosted: Wed Aug 22, 2007 10:52 am 
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OK, I spoke a little too soon. Here is a tool made by Isky. Kinda salty, but should work.

http://www.thunderracing.com/catalog/?a ... 71&sid=455

http://www.iskycams.com/onlinecatalog.html

Any other sources?

Cheers,

Lou

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Doc
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PostPosted: Wed Aug 22, 2007 11:58 am 
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Salty...
I will show you "salty"! :shock: :wink:
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lincparts
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PostPosted: Wed Aug 22, 2007 12:11 pm 
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ouch, please No , No noooooooo :shock:

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GTS225
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PostPosted: Wed Aug 22, 2007 1:59 pm 
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Relax, Linc.....Those are Dutra-made valve relief cutters. Not Dutra-made-by-accident damaged valves. :roll: :lol: :wink:

Roger
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Wizard
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PostPosted: Wed Aug 22, 2007 2:12 pm 
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Doc is not only one with this, I thought of this too because of small budget what to do with the early turbo 2.2 pistons (they're flat tops with 9cc dish). Shop it or do myself with a homemade valve relief cutter for hybrid 16valve head on typical 2.2 or 2.5L block.

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slantzilla
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PostPosted: Wed Aug 22, 2007 2:13 pm 
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Yeah, that's what I was gonna suggest. Welding a piece of tool steel to an old valve to make cutters. :D :D

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Dart270
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PostPosted: Wed Aug 22, 2007 2:23 pm 
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Gee, I was thinking about that today. Thanks for the pics, Doc!

Lou

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Joshie225
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PostPosted: Wed Aug 22, 2007 2:33 pm 
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I've used the Isky tool. It works fine, but it's not super simple to use. There is a collar on the pilot that you have to adjust so one doesn't over cut the piston. If you have a dial indicator and stand to make sure the piston you're cutting is at TDC and feeler gauges for adjusting the pilot collar you're set. It's not tough, just a bit tedious.

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Bren67Cuda904
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PostPosted: Wed Aug 22, 2007 3:01 pm 
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A couple of those look like there for cutting the VALVE SEAT.

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Doc
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A couple of those look like there for cutting the VALVE SEAT.
Yes, many of the tools shown are used as 'pocket porting' aids.
The photo shows how you can make home made cutters to do many things.
DD
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Dart270
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PostPosted: Thu Aug 23, 2007 5:49 am 
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Well, I did this the easy/cheap way. Made relief markings on the piston tops and went to town with my die grinder and a 1/4" cylindrical (no taper or rounded end) carbide burr. 10 min/piston and I have 0.120" deep reliefs in my pistons. Clamped the piston (w/rag) in the vice and used a steady hand.

Getting closer to assembling the V motor...

Lou

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