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Originally Posted by HeimenHummer
Hey guys,
I know some of you hate me but this is serious and I really need your help.
I've had a Unichip in the H3 for a while and wanted to get more performance. I was recommended to port and polish the intake and exhaust. We found out they used abrasive material to do it like gritty sand. So I got with my friend that tunes Hondas and we decided to try it ourselves. We got a bag of sandblasting sand and hooked up into the intake and started the H3. We had to hold the gas so it would run. He wanted to let the engine suck in the sand through the intake so it would port it out and then push it out the exhaust so it would port the exhaust manifold.
I was worried that it might cause problems but he figured it'd be OK. After running the car and letting it suck in sand we got about half way through a 25 lb bag. The check engine light was on and the engine was bucking and kicking and sounding really weird. We stopped and hooked the H3 back up normal and took off the sand supply. We tried to start it again and it was really hard. Once started it couldn't idle and kept making weird noises. We took it out and drove it and it started to make scraping and knocking noises.
Help! Can anyone tell me what to do! My friend only does Hondas so he doesn't know much about Hummers.
I'm also worried if I'm obliged to sleep with him even though things have obviously gone wrong.
Please help.
Thanks, Hollie
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You've got to add 10 % valve grinding compound and 10 % 2 stroke motor oil to the sand , This adds the right amount of lubricity to the mixture and allows any excess to be burned. You should do your husband's car before you go back and redo yours. THis works everytime. Make sure you have a good supply of all the ingredients;valve grinding compound,2 stroke motor oil, and a good brand of abrasive sand[poor quality can ruin an engine].Now the reason you want a good supply is so that when and if the motor starts to buck you can finish the job and motor will be completely done [in]. Your welcome lennyrebel