Cut Out Tool vs Die Grinder

[Ben LeBlanc]

Well, I have got the need to port out the engine I got, as well as run a roloc sanding wheel as well as a 3 inch cutoff wheel for cutting body panels.
All I got is a small 5.5 gallon rolair big compressor, which pumps out 6.4 cfm at 90 psi. So, since die grinder easy so much air, I was looking electric.
Now I don't see any right angle die grinders, and all I see are huge makitas at 100 bucks.
I happen to have this thing laying around, and it goes fast and is pretty tough; sheared a couple shafts already with it.
DEWALT DW660 Cut-Out 5 Amp 30,000 RPM Rotary Tool with 1/8-Inch and 1/4-Inch Collets https://www.amazon.com/dp/B000051WQX/?tag=atomicindus08-20

So, can I port, cut, and sand with my little dewalt on a dimmer switch? What is the difference? Thanks.


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[LXCam]

My suggestion and I swear it's meant as friendly. Get a angle grinder for sheet metal cutting and leave the porting to someone who knows what their doing as well as owns the proper tools. If you're worried about the cost of the proper equipment, you sure as hell don't wanna screw up a head or manifold.

 

[Ben LeBlanc]

My suggestion and I swear it's meant as friendly. Get a angle grinder for sheet metal cutting and leave the porting to someone who knows what their doing as well as owns the proper tools. If you're worried about the cost of the proper equipment, you sure as hell don't wanna screw up a head or manifold.

I got an angle grinder, but I heard that a 3 inch die grinder gets a much more precise cut, and is better balanced.
And it is not necessarily the cost prohibition, although I am not made of money, it is the fact that the die grinder is a two handed tool that is huge. Meanwhile the thing I already have is free to use and a more manageable size. Porting shouldn't be that hard...


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[LXCam]

I got an angle grinder, but I heard that a 3 inch die grinder gets a much more precise cut, and is better balanced.
And it is not necessarily the cost prohibition, although I am not made of money, it is the fact that the die grinder is a two handed tool that is huge. Meanwhile the thing I already have is free to use and a more manageable size. Porting shouldn't be that hard...


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Well I'm not too sure about the smaller unit being more precise with the exception of cutting a tightish curve. For me the larger the more accurate it is as it's easier to stay in your grove.

Now porting, tell ya what bud I've been porting for a few decades and it's really easy to kill flow. Bigger is not better in most cases. It's all about shape and understanding and knowing your goals. Port matching to clean up a transition is one thing. Beyond that it's an art.

 

[rsanter]

Yes that will work. However a die grinder has a portion in the front right behind the collet where you can hold the thing. That is very important for control while porting. Also the visibility while porting will be reduced with that tool.
You can give it a try but the usefullness of that tool will be limited for porting.
Again, give it a try as you already have it. But this is my feedback after porting many many heads and building many racing engines

Bob

 

[sberry]

I like right angle for cut off wheels.

 

[404]

Porting shouldn't be that hard...


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Neither should making a replica of Michelangelo's David. And yet...

 

[Ben LeBlanc]

Oh, I forgot that I should never try anything new because it might be hard.

Just trying to further my learning and skill set here. Thanks rsanter, I will give it a try.


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[djb2]

I think that they are saying that porting isn't something that is intuitive. It's not especially obvious what works and what completely fails. Can you look at a NACA duct and immediately decide if it's sucking clean air or just the boundary layer? Can you even figure out how it works? Especially why it has crisp edges rather than streamlined curves.

This shouldn't stop you from trying, but don't expect the first results will be great.

 

[RedneckWelder]

Here's a proper electric die grinder

http://www.amazon.com/dp/B001ASC73E/?tag=atomicindus08-20

As far as advice pertaining to your intended use I'll leave that to others.