sanding hard plastic

[Michael Cummings]

i'm porting out the lower chamber of my 1g maf..and i cant really use a dremel to reach the middle part inside the chamber...what do you suggest is a good material to use to sand down the hard plastic chamber
the only things i could think of were low grit sand paper ..or a file...the sand paper seems to work decent..but slow....and the file was easier to use than the sand paper but was extremely slow..very very slow
any ideas on what would be faster ?

[Mike Schmid]

Just keep at it with the sandpaper, that's how John and I did my MAF.  I don't think there is a better way if you can't get a dremel in there.

[Michael Cummings]

i could get the dremel in at each end but cant reach the middle..guess i'll go at it with sand paper...what grit did you use
50?

[Mike Schmid]

I think it was more like 80... Emery cloth would work well.  I just used about a 1" square on my fingertip.  

If you think this is fun wait til you try making stuff out of fiberglass   :roll:

[Wade Carlson]

mike your hackin your maf more?

why?
so u can fix your fuel cut?
i wouldn't be doing that until u get more fuel going

[Michael Cummings]

yea i'm hackin it more...took out the silicon and backed that screw out and now i'm portin out the chamber a bit more
you never know might fix the cut  :?
more fuel will be comin shortly ..just give me some more time

looks like i'm back to sand paper

[John Hartman]

Micheal, DON"T go too far until you get a pump, more pressure/bigger injectors and an SAFC.

Just take out the lower honeycomb, back out the screw and gently radius the lower part and knife edge the vertical piece in the middle of the lower part.

If you take any more out, it WILL be too lean up top.

As for getting in there, my Sears rotary tool made it all the way thru, when it went nuts.  I ported the hell out of it, shark-mouthed the lower chamber and really went to town a few weeks back.

I had to add almost 10%    from 5grand and up.

[Michael Cummings]

okay well i think i will just tidy up the little bit that i manage to port out this morning ...and then i will leave it...i should have walbro by the time i bring the car back on the road which is march
and i'll be gettin 550's around that same time too..but wont beable to put them in untill i get the safc which wont be untill summer time most likely