Flycutting Tools
05-02-2008, 03:08 PM
#50
Those tools look pretty sweet, still a little pricey though. I tried doing something similar myself but the steel I had on hand was simply not hard enough.
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
05-02-2008, 03:20 PM
#51
Those tools look pretty sweet, still a little pricey though. I tried doing something similar myself but the steel I had on hand was simply not hard enough.
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
I agree the Lindy tools are a little expensive for one time use, but they are competitively priced when compared to other products like it on the market. The huge advantage to the Lindy Tools don't require any modification to the head and don't harm the head in any way. They also provide a nice radiused cut in the piston instead of a sharp angle that is prone to cracking.
05-02-2008, 04:03 PM
#52
Great tool you made there and you can't beat the price. I agree the Lindy tools are a little expensive for one time use, but they are competitively priced when compared to other products like it on the market. The huge advantage to the Lindy Tools don't require any modification to the head and don't harm the head in any way. They also provide a nice radiused cut in the piston instead of a sharp angle that is prone to cracking.
I agree the Lindy tools are a little expensive for one time use, but they are competitively priced when compared to other products like it on the market. The huge advantage to the Lindy Tools don't require any modification to the head and don't harm the head in any way. They also provide a nice radiused cut in the piston instead of a sharp angle that is prone to cracking.One concern about the Liny tools radius is that you need to cut an even larger diameter flycut in the piston to gain the same valve clearance than you would have to cut without the radius. This could translate to slightly less compression. Probably on the order of .5 to 1 cc for both valves combined, but its something to consider. Granted that it does stand to reason it would be stronger radiused.
05-02-2008, 06:05 PM
#53
....One concern about the Liny tools radius is that you need to cut an even larger diameter flycut in the piston to gain the same valve clearance than you would have to cut without the radius. This could translate to slightly less compression. Probably on the order of .5 to 1 cc for both valves combined, but its something to consider. Granted that it does stand to reason it would be stronger radiused.
05-04-2008, 08:33 AM
#54
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For those that have done this, I will be using a set of 59cc heads with a .040 cometic gasket. The cam I will be using is a ms4. IIRC the lift is 640/609?? <---might be off a bit. How deep will I have to FC if using the 7.4 pushrods and 1.7 HS rockers??
05-04-2008, 02:50 PM
#56
Those tools look pretty sweet, still a little pricey though. I tried doing something similar myself but the steel I had on hand was simply not hard enough.
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
I eventually decided to use replaceable adhesive sandpaper disks, which work great. Heres a couple of pics of the flycutting tools I made using only a lathe, and about 5 bucks worth of hardware. Ive used these on quite a few motors with great results. The only pain in the *** is cutting out the sandpaper, and then peeling it back off the disk. It needs a new piece of sand paper for every cut, which can be a little time consuming, but you cant beat the price!
Bill
06-19-2008, 03:55 PM
#58
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Would I only have to flycut the intake valve side if I wanted to run a 59 or 60cc chamber (on some tsp stg 2.5 5.3l heads) and a .040 gasket with my 233/239 cam??
06-19-2008, 04:09 PM
#59
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You are going to have to measure. It is that simple. Do not go by other's experience. Measure and, if needed, then get the tool(s) and cut.
I was told that the exhaust would not need to be cut and that I would only have to cut the intake. I have a G5X3 cam with LS6/2 head 60cc. Well, I measured and found I needed to cut both. I measured an initial PTV of .007 intake and 0.054 exhaust. So, if I took the advice, my exhaust PTV would be way to close and subject to hitting the piston. I have a 6spd and that represents even more possibility of hitting.
Do it right and measure - you will sleep better knowing what you have and that it is done right.
I was told that the exhaust would not need to be cut and that I would only have to cut the intake. I have a G5X3 cam with LS6/2 head 60cc. Well, I measured and found I needed to cut both. I measured an initial PTV of .007 intake and 0.054 exhaust. So, if I took the advice, my exhaust PTV would be way to close and subject to hitting the piston. I have a 6spd and that represents even more possibility of hitting.
Do it right and measure - you will sleep better knowing what you have and that it is done right.
06-19-2008, 04:50 PM
#60
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I know I will need to flycut thats why I asked that, what exact tool is needed to measure? Can I just use clay and turn the motor over by hand and measure the dents?