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Old 04-10-2007, 12:34 AM   #1
marc
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well i dk, im not pulling the block. couldnt u just liek wet sand, steel wool, any other highhhh grit abrasiv material, it till its pretty much smooth?
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Old 04-10-2007, 02:57 PM   #2
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That's what a lapping tool does. Its a heavy (like 60lbs) disc about 12 inches in diameter. You use a special lapping compound that acts as an abrasive. You can do this with the block in the car, but it WILL kill your back. And like I said you need to find a way to remove the dowel pins from the block because they will interfere with the lapping tool.
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Old 04-10-2007, 06:00 PM   #3
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Hello those dowel pins are half the battle I think, lol.
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Old 04-11-2007, 02:14 AM   #4
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ok well it seems the dowel pins r ganna be the problem, and if u can just wet sand it or use rubbing compound or sumthign to smooth it out y not just do that, i dont think u necceserily need a lapping too. u culd essentially use a disk sander with high grit and sum kind of rubbing compound, im almost 100% sure there ways around this...all i gatta do is take those pins out then.
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nothing but the best
-mods- so far
K&N intake fipk
3" megan downpipe
3"turbo elbow
4 washers on the wastegate
highflow cat
short shifter
89+ front bumper, pic soon to come
many more upgrades soon
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Old 04-11-2007, 02:24 AM   #5
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Your'e almost 100% sure of what???? That your gonna be in the market for a new engine soon, or that you really want to rebuild the entire engine after 5 heat cycles. Because you'll be lucky to get that far if you take a da sander with 80 grit to the block.

I'm sorry but that's simply the most ignorant statement that I have heard in a long time. You can do this by hand if you have to without a lapping tool. You would be better to get a straight 2x4 instead of a powered sander.

Start with 240 grit and a sanding block from the autobody section of your local parts house. Get a feeler gauge and a tool with a machined edge. Use fresh cheap oil as lubricant. Atleast this way you can't screw anything up to the point of having to pull the block.
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Old 04-11-2007, 12:53 PM   #6
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Whoa calm down there buddy

There is an easy way around it. I used a whiz wheel. It's a 90 degree angled die grinder with a whiz wheel attachment. I used the red 3M abrasive disc meant for aluminum (block is harder than aluminum, its cast iron). I just lightly hit the block with it, at light throttle, using circular motions, never staying in the same place for more than 1 second. You can see what it did to my block in my BHG post. I've been beating the shit out of my car for 200 miles so far and its just fine.

I had a lapping tool but no compound, plus I didn't even want to attempt to get the dowel pins out so I just went the easy way. You can say all you want about my method, but it works. My block actually looked better than ddmcse's did after he lapped it by hand. Thats not what I said, He said it after looking at my block in person.
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Old 04-11-2007, 11:14 PM   #7
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and dude, b4 u try to call statements ignorant..maybe u shuld read what i had actually posted. i said use a high grit sand paper dude. 80 is not high grit. im talkin high enough that u wuld not feel uncomfortable wiping ur ass with it. 80 grit wuld do sum damage to ur butt hole.
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nothing but the best
-mods- so far
K&N intake fipk
3" megan downpipe
3"turbo elbow
4 washers on the wastegate
highflow cat
short shifter
89+ front bumper, pic soon to come
many more upgrades soon
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