I have 3 days to polish my intake and runners. I did the pelnum today, worked for about 5 hours give or take.

It started raining so I had to come in..... but my question is there are still little tiny tiny almost un-noticeable holes (i guess the stock pits from the casting) on some parts.... do i have to get rid of them completely, or will they become almost invisable after finishing the sanding process and buffing...?

 

Sometimes they will disappear...sometimes they wont disappear but actually elongate over more sanding. I'm not sure how you know when to stop, but remember this....after all of your middle steps are finished, you will buff with white rouge as a final process, which fills the 'pits' with white instead of black, making them less noticable.

 

Most of the time, there is nothing you can do about pits. Its just air that got in there when the part was made. I would advise you stop sanding, cause chances are they will only get bigger. Sucks don't it?

 

here is what i got sofar i listened to you guys and stopped sanding, but there are still holes everywhere... tiny ones that you can see up close... maybe i should've sanded them off, but i am in a big rush i need to finish sanding my plenum, runners, and finish off my vette valve covers by saturday

 

2

 

3

sorry my camera really sucks ***

 

4

 

Your getting there. You can jump up to the next grit and start those steps and then go to the compounds. After you are done with the compounds, look to see if the pits are still there and decide if you can or cant live with out them. If not, then jump back to a lower grit paper and start over and see if they will come out. Do it in a less conspicuous area.

 

um... i don't have any buffing wheels, that is actually my finished product... lol

i did 180 dry, 240 dry, 340 wet, 400 wet, 600 wet, 800 wet, 1000 wet, 2000 wet, then mother's aluminum polish by hand.

 

oh man, that thing could look 10 times better with buffing compounds. Even though some people have had good results with up to 2000 grit, more peeps have achieved better results with less time and money with the stop at 400 grit/compounds method.

But cince you have to have it done by saturday, then I guess there is nuthin else you can do...unless you go to sears and by compounds and wheels.

 

Here is my LT1 intake. In this pic, you can see the pits, all 550,000 of them

But it looks fine from 5 feet away, so rather than make them worse, I just stopped sanding.

 

The pits are more commonly reffered as {gas} usually it gets worse as you sand. I think parts that are pourn during cold weather have a greater chance of getting gas.

 

dont use the mothers mag alumin polish, use the mother Billet alumin polish. i used it on my consule plate i made and it as 1000x better then the mag alumin polish. try the Billet alumin polish and then look back and stare.

 

I never got all the pits out of my SuperRam... most are gone... if you start with nice billet aluminum like Skulte's wheel adapters then polishing is easy. Got about 15 minutes in that one spacer and its about done!