does anyone have any tips on modifying nitro engines.i'm trying to clean up and get a little more out of my .32.

.32 what? Dynamite or OS?
OK, assuming that it's a Dynamite that we're typing about and that it's in a Pro Boat boat let's take it from there.
First, I'd port match the exhaust as the header blocks off the flow of the exhaust gases hurting it there. Pull off the header if the engine has been run and you'll see where the stains will show you what needs to be removed. A Dremel with a short stack of cut-ff wheels (use new ones as they'll all be the same size) to carefully remove material as you don't want to go too deep into the flange and go through the header. You want to angle the cuts in.
Next, the carb. The thing was made more for a plane than a boat so it's choking the engine. you're going to need to find a carb with a larger bore but one that will fit the engine also. A few in here have already replaced their carbs. I don't want to say which one they used as hopefully they'll see this thread and reply with the correct one.

This is the carb that people have recomended, but I have been trying to find one since last April.

http://www3.towerhobbies.com/cgi-bin...&I=LXFW08&P=ML

I don't know if they even make them anymore? Every place I found that sells them never has any in stock. If anyone has found one, let me know!

PERRY makes a decent carb, they use a black nylon body and have larger throat bores than most stockers.

sorry ron,yea it's a dynamite in my tc31.i pulled the motor apart but there are no stains,maybe i haven't run it enough.i sharpened the bottom of the sleeve,cleaned the exhaust port up,and now i will search for the magic carb.if i find one i'll let you know kaptain.ron didn't you blow up a .32 with a bigger carb?

I never owned a .32 but have been working with a few of them. The one that sneezed was a Rossi .21.