Hey everyone, I have a question about porting & polishing heads. recently I was reading about someone polishing there heads for more power. I guess they do this by blasting the part with sand. Well, my friend (who works at a performance car shop) and I tried to do this our selves. Not a good idea it seems. I got some sand and hook up a hose to the air intake of my sled, started the sled and started to suck the sand in. Every thing was going great, I got about 1/2 way through the 20lb bag when the motor started to buck and shake. I shut it off and I'm wondering what everyone's thought are. Do you think I have damaged the motor or is this typical of this sort of project?
Questions about polishing heads
- Thread starter BillyJack
- Start date
Best laugh I've had all week...... 
I'm installing a turbo kit next week and I'm hopping to have this issue resolved before the kits shows up....any info will help! Should I just run it out? Mattymac, I used a 2mm size grit??? thats just what it says on the bag??
Hhhhhhhmmmmmmmmmm, polishing heads, 2mm in size, did chadd and shaine help do the motor work at CMS?
if you run the smaller .4 or .5mm grit it will polish out but you may have to run a bunch more through it to clean up the internals.
So that's why I'm getting the "knock" in the motor? Your saying that the size of grit makes that much of a difference?
Roflmfao!
The knock is probably just the litter the cat left in the sand hitting the bottom of the piston, next time try screening the big chunks out first..
D
dmkhnr
Well-known member
I polished mine much the same way except I used the silica treated sand.
Heres an ebay link to the turbo that I'm installing:
http://cgi.ebay.com/ebaymotors/Infi...013QQitemZ230256092253QQrdZ1QQsspagenameZWDVW
Here's the turbo in action:
http://www.youtube.com/watch?v=VdLgF7CI3HQ
Here's the guys that will install it for me:
http://youtube.com/watch?v=dyR0U_fYtwY
You Yami guys that spend $5k plus on your turbos are as silly as this thread!!!
Heres an ebay link to the turbo that I'm installing:
http://cgi.ebay.com/ebaymotors/Infi...013QQitemZ230256092253QQrdZ1QQsspagenameZWDVW
Here's the turbo in action:
http://www.youtube.com/watch?v=VdLgF7CI3HQ
Here's the guys that will install it for me:
http://youtube.com/watch?v=dyR0U_fYtwY
You Yami guys that spend $5k plus on your turbos are as silly as this thread!!!
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I would have mixed the sand with the fuel, but thats just me.
I think that "turbo/supercharger" may make boost at idle!
Probably nothing past idle though.
I think that "turbo/supercharger" may make boost at idle!
Probably nothing past idle though.
For the utmost in performance and power you could just put a few spoonfuls of playground sand in the motor, remove spark plugs and put sand in. If you turn the motor over a few times it will distribute the sand throughout the ports, making everything real shinny. Don't get carried away and put to much in, or you'll have to velcro hands to handle bars. Put plugs in and letter rip. Should be good for at least a 10 to 15 horse boost in power, Seems to work on newer sleds better, as they are tighter and may need this hillbilly treatment. Oh yeah, try to keep this a secret as all your friends will definitely be asking, Wow what happened?
if you tell they will probably laugh, Unbelievers, Try it see for yourself, just don't overdue it, You will be amazed at the power, how cheap this trick is and you will have a huge fan base, following your every move.
Good Luck, that knock means you need more octane.
if you tell they will probably laugh, Unbelievers, Try it see for yourself, just don't overdue it, You will be amazed at the power, how cheap this trick is and you will have a huge fan base, following your every move.
Good Luck, that knock means you need more octane.
LMFAO......just way too much for a Sat. morning.....
Thanks for the tip ibdoo'n; I will try that out Sunday. About the knocking sound thou, thats normal? Should I just give it gas so that it does not die on me. It seems like thats what I have to do to keep it running right now. Your saying after that clears up to put some through the top of the motor through the spark plug area? Sounds like you know your stuff, do you race or have worked on a race team before?
Synthetic sand is best.
Take the clutch off, pour 2 tablespoons of 4000grit synthetic sand in the carburator and run it about 3000 rpm's for 8 minutes, then while it's at idle, pull one spark plug out and fill it up with 10,000grit synthetic racing sand and repeat 3000rpm cycle and then do the same on the other cylinder (s). Then, after your done with all that, use your garden hose and fill the air box with water while holding about 3000rpm's and let that wash out all the remaining polishing material. Final step is to use some flitz, douse 10 cotton balls with flitz polish, stuff them down the spark plug hole and run at 4100 for 6 minutes. That will provide the most polished head and cylinders imaginable. Then, fill the gas tank with some Pabst Blue Ribbon and you'll be all ready to go for next year.
Take the clutch off, pour 2 tablespoons of 4000grit synthetic sand in the carburator and run it about 3000 rpm's for 8 minutes, then while it's at idle, pull one spark plug out and fill it up with 10,000grit synthetic racing sand and repeat 3000rpm cycle and then do the same on the other cylinder (s). Then, after your done with all that, use your garden hose and fill the air box with water while holding about 3000rpm's and let that wash out all the remaining polishing material. Final step is to use some flitz, douse 10 cotton balls with flitz polish, stuff them down the spark plug hole and run at 4100 for 6 minutes. That will provide the most polished head and cylinders imaginable. Then, fill the gas tank with some Pabst Blue Ribbon and you'll be all ready to go for next year.
I can't believe you guys would give such poor info to a guy. Everyone knows the high air pressure air method only works with old piston ported engines. In these newer case reed engines it's very importand to suspend the sand in some type of liquid while spraying it in to prevent any reed or cage damage. It's probably to late now! The Pabst Blue Ribbon may help though.
JSLEDDER, Are you STUPID? Pabst Blue Ribbon in the fuel tank!?! What ever man, your dumb
Nevermind the cotton balls in the sparkplug holes. I'm just guessing here, but i think he might of been joking BillyJack. But the Pabst Blue Ribbon might be a little cheaper than the actual Gas you need.
Ok, I don't know WHAT'S up now. I just went to finish up and I cant get the thing started! Any suggestions? And NO, I didnt put Pabst Blue Ribbon in the tank.
