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Old 02-23-2008, 09:17 PM   #1 (permalink)
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It looks pretty straightforward. Does anyone have any tips, tricks, links?

TIA,
Dave
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Old 02-23-2008, 10:17 PM   #2 (permalink)
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There was an article in a "recent" Popular Hotrodding magazine on that subject, complete with suggest tools and tips. I will dig around for it this evening and see if I can find it.

MustangChuck

PS: "Recent" is within the last year. Memory is very fuzzy on exactly when.

EDIT: Update -- Didn't find it in my stack at home. Sometimes, a magazine will "find its way" to the office. I will dig there.
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Old 02-24-2008, 03:10 PM   #3 (permalink)
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Dave,

I believe you to be a man of action, so you have probably already started working on this.

The two things I remember from the article were:

1) Check clearances without the head gasket installed (even the old crushed one). This will give you just a little more PtV clearance as insurance.

2) Don't cut too much out. Just what you need, as any cutting weakens the pistons.

I will dig at the office tomorrow. The tool they used looked a lot like a cutoff wheel for a die grinder. You slid it through the valve stem hole and used it during your measurments. When things don't clear, you attach either a die grinder or a held drill (don't remember which) and grind.

The other thing I remember is that is it a lot of work, time wise. The other option is to pay someone else to do it. Lots of labor = lots of bill.

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Old 02-24-2008, 05:28 PM   #4 (permalink)
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The best tip I can give is let someone that has the correct tooling to do this do the job for you. One slip the wrong way and you have junk on your hands.
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Old 02-25-2008, 07:58 AM   #5 (permalink)
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Well, didn't find the magazine at the office, which is making me seriously doubt my filing system . A quick net search shows that the tool described in the article is most likely an Isky piston notching tool, which you should be able to find here. The network at work is being uncooperative this morning, so their website is not loading (NMCI, if you know what that is -- if not, count yourself amongst the lucky).

Here is a discussion about doing it your self. They strongly recommend re-balancing the engine after you are done cutting, as it is not humanly likely you will take the exact same amount of material from each piston.

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Old 02-25-2008, 07:59 AM   #6 (permalink)
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Sorry for the double post. F@##%-ing NMCI.

MustangChuck
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Old 02-25-2008, 09:55 AM   #7 (permalink)
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NMCI is used here by my government counterparts... the mere mention of NMCI turns otherwise calm and rational people into a frothing linch mob. Fortuneately for me, I don't have to use it.

Thanks for the tips guys,
Dave
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Old 02-25-2008, 11:16 AM   #8 (permalink)
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Just did this to my 351, used a home made oversized valve with welded on blades.
are you doning this with an assembled short block?
I put tape all around the slug and the ports to keep the shavings confined. Shop vac handy.
I also used the same head champer on all my pistons
Don't forget radial clearnce too
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Old 02-25-2008, 12:24 PM   #9 (permalink)
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All right, who mentioned NMCI? Grrrrrrrr!
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