User On Patrol.
The day begins with 3WW
Can this be wet sanded smooth again (pits are pretty deep) or should I just look (probably?) for a good head that isn't pitted at all ?
This is off a MX bike but the question I'm sure would pertain to any 2 stroke head dome.
What exactly does this effect when running a machine like this ?
My theory is they created hot spots which in turn make the bike run leaner then it should be, am I way off in my thinking, does it do otherwise ?
Power User
Catch me if you can
I wouldn't worry about running it myself. But, if it bugs ya I'd just get it machined, cleaned up and resurfaced.
Not sure if yamahondaman is still around, he never answered my PM's.
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country
Roostin' Away
Arm chair racerRoostin Away
Sand it down and run it. Had a zr500 that ate 3 pistons and the rings beat the head up bad. Bought a new head the first time. Second time we sanded the dome down and ran it. Sold that hunk of junk lemon of a snowmobile. I wouldn't be afraid of using it is you sand it down.
YTM-200, Wheeling machine!!!
1985 Honda 200x...
...Just a simple mild 200x
My other user 3WW ID was Nitebiker07.
Teaching quads a lesson
the pits wont hurt anything.
sanding the pits down will make the dome larger, and could cause a substantial drop in compression.
put it together and run it.
Power User
Roostin Away
use a dremel and you can polish them out carefully not taking away to much material to make it smooth again! and of course check to see if its flat on a peice of glass or something of that nature!
2- 85 Tri-Z's black and Yellow
2- 85 250SX's
1- 85 200X
3-ATC 70's
2- 85 tri-zinger's who needs some parts
User On Patrol.
The day begins with 3WW
\\Originally Posted by 300rman
1st you say it may cause a substaintial drop in compression (I knew that is a possibility), which if it does, I'm certainly not going to put it together and run it.
You make no sense ?
Power User
Catch me if you can
Using a dremel is not the best idea, one slip and you damage the sealing area. Run it or machine it is the best advice I can give ya
You would have to sand or grind the HELL out of it to lose compression.
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country
User On Patrol.
The day begins with 3WW
That's an idea! I will ask my engine builder guy too though, see what he says about all these comments.
User On Patrol.
The day begins with 3WW
The dome area can just be machined ? What type of machine does it?Using a dremel is not the best idea, one slip and you damage the sealing area. Run it or machine it is the best advice I can give ya
You would have to sand or grind the HELL out of it to lose compression.
Loves Corn.
Catch me if you can
Loves Corn.
Catch me if you can
or this
My other user 3WW ID was Nitebiker07.
Teaching quads a lesson
how dont i make sense?
i said the pits wont hurt anything.
i said sanding them out could cause a substantial drop in compression.
i said you would be fine to put it together and run it with the pits.
what didnt make sense?
Power User
Teaching quads a lesson
I've seen heads like that all the time, rebuilding snowmobile engines here in Nome. There's a theory that rough surfaces on the head help turbulate the fuel-air mixture and result in a cleaner, more complete burn.
Check my feedback before buying from me
Roostin Away
if its a two stroke, its fine and a lil normal. run it, a machined head wont do any better...if lil at all.
User On Patrol.
The day begins with 3WW
NO, you didn't say it in that order ......
" the pits wont hurt anything.
sanding the pits down will make the dome larger, and could cause a substantial drop in compression.
put it together and run it. "
The way you phrase it above, it's to be taken as put it together and run it even though I could have a sustantial drop in compression. The " put it together and run it " should have been in the same sentence with " the pits wont hurt anything."
Reply With Quote
