120 to 80 grit cloth backed emery type, not the paper backed, IF I was to try this, however the idea of all that grit coming loose sounds bad. The shade tree method I have seen to get out of trouble on a assembled engine was to braze a couple of pieces of ground tool steel to an old valve, at least then you are only dealing alu. shavings.
I've considered that but I couldn't find any pictures of someone who have done that or any good material to make them off.
I've only found the type of lathe cutters shown in the attached picture and that type only cut a very small area, I need a cutter that can cut a larger diameter. My english is so bad so I don't know if you understand what I mean but I mean that the sharp part of the lathe tool need to be larger.
You can rent the exact tool from Isky to do what you want!With the sand paper you are talking about taking forever and a day times eight or sixteen.
Yes, I know about the isky's tool but it will take me that time times 10 to get the part to sweden :/ but thanks for your reply, it would have been a good option if I lived in the US.
The product we use is from Norton. It's called Norzone R821. It's 36 grit. It will cut fast then you could finish off with a touch of 80 grit. Any quality 36 grit should do fine. The grit is not going to come off of this type of paper. But you still face the problems of the aluminum grit. Again I would put shaving cream or grease around the piston to keep the grit from getting down the sides.
Thanks, that product is probably exactly what I looking for! But it wasn't easy to find a dealer in sweden, but I will send them an email (there is no distrubutor search in the european sites). Also, I couldn't find the product in the sweden catalogs, only on the north american site.
I will put shaving cream or grease around the piston like you said, it's a good idéa"!
I have done this before with the 36 and did a finish touch with 80. I was never brave enough to do it without a complete disassemble and scrub job although I have heard of those that have........
thanks for your reply! how smooth (fine) was the surface after the 80 finish touch?
do you think 0.040" off with 36 and 0.020" off with 80 will be fine or can I take 0.050" off with the 36?
this was a really good and cheap tool, if I lived in the US i would have bought it for sure. thanks for your reply, this is really an option to concider even if it will take a very long time before I have it in front of my door!
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