Combustion Chamber Sanding/Polishing

[stroker87]

I have to take my engine a part to fix some things and have some time on my hands till I get my parts in, I was talking to Mr. GrumpyVette and asked him what are some things I can do to help performance this is one of the things he told me Sand down the combustion chambers ruff surface, He stated that in the "ruff" area the high points heat up faster and by sanding them down you can help eliminate "some" of the heat and cut back on the turbulence some too

This is not a seat of the pants HP gain, it more like a "little here" and a "little there" ADD up and if you have the time why not its a free be and this along with some other tweeks might just give you the edge you need WE ALL seen races won by a bumper!!! :mrgreen:

get some 100 grit sand paper and go to town!


This is what I started with, cleaning this area before you start will help your sand paper work longer

I got to this point and emailed Grumpy asking if this was ok because around the spark plug area was tuff to get at, Grumpys responce was "takes persistence and a bit of dexterity with some sand paper on your finger, its a P.I.T.A. but that's why the guys that win races win, its the little extra effort it takes to get things done a bit better than the guys that won,t put out the necessary effort."

so I sanded more!

As I worked Grumpys words keep ringing in my head and i got to this point and even polished them!

 

[grumpyvette]

the final picture looks very good! you may not feel the difference but your engine will know there's a difference, it may only be a slightly better resistance to getting into detonation, but after a few months of driving the engine, you'll see a marked difference in the carbon build-up in the combustion chamber if nothing else!
In the results Ive seen on my personal engines its well worth the time and effort, Ive had far less problems with the knock sensor and needing to tweak the timing during tune ups, and the IR temp gun, on the headers shows the cylinder temps exiting the exhaust are just a tiny bit more consistent, its the little time consuming tweaks that , most guys won,t bother with because the results are not easily apparent at first glance that make the difference between a good engine and a great engine combo!
ID ADVISE READING THRU THESE LINKS AND SUB LINKED INFO, THERE'S SOME VERY USEFUL INFO INCLUDED

http://victorylibrary.com/mopar/chamber-tech-c.htm

http://victorylibrary.com/mopar/chamber-tech-c.htm

http://www.carcraft.com/techarticles/cc ... index.html


http://www.gofastnews.com/board/technic ... uding.html

http://www.gofastnews.com/board/technic ... lumes.html

viewtopic.php?f=52&t=1074&p=2070&hilit=+copper#p2070

viewtopic.php?f=52&t=462

viewtopic.php?f=27&t=1831&p=4763#p4763


http://www.gofastnews.com/board/technic ... l#post5343

BTW on INTAKE PORTS,Its been my experience that a 120-150 grit sand paper provides all the rough surface you need, anything smoother tends to allow fuel droplets to sheet,like a film over the port wall surface, anything much rougher tends to increase the boundary layer, and restrict flow, on exhaust ports, and combustion chamber surfaces the 400-500 grit works better

 

[stroker87]

Thanks! Grumpy

If I can pick up a few HP here few more there why not? it was either polish the heads or watch a girly show with the wife as you can see the wife watched her show alone! :lol:

 

[jimmmy57]

Right on Stroker , looks great,,,,,,I might even give that a go myself,,,polishing the chambers that is ,not the girly show