MILLED HEAD?

[cvbadass]

with the setup that I have, what should I have my head milled to? Also, what exactly can I expect from this?

[Face]

I just milled mine and I can see a pretty good differance. I had to rejet it (due to other previous mods) but after I did I noticed a lot of differance in the bottom end. good bang for the buck!

[shee rips]

do it.

i would take off .020

you might need to back off your timeing a bit, that or run some race gas.

[cvbadass]

do it.

i would take off .020

you might need to back off your timeing a bit, that or run some race gas.

will I notice more lowend? I would like to go back up in gearing, I dropped to a 13 tooth this weekend and like the low end, but i lost 4mph and doen't seem to pull on top like it used to. How do you like the 15 tooth?

[cvbadass]

will I notice more lowend? I would like to go back up in gearing, I dropped to a 13 tooth this weekend and like the low end, but i lost 4mph and doen't seem to pull on top like it used to. How do you like the 15 tooth?

Any one else with some suggestion? wjhat about compared to a cool head?

[shee rips]

ive read/heard that taking off .020 is the equivalent of 21 cc domes in a cool head, except you wont get the added colling, or a nice shiny peice.

if youre not overheating, then you have to decide if a shiny head is worth an extra 200 bucks.

 

i did my top end at the same time, and it wasnt in that bad of shape before the rebuild, but i noticed a fairly big increase when i got it back together, mostly bottom end.

it should help to pull the taller gearing easier.

 

i like my 15 tooth. it makes super slow trails a bit tougher, but i like not having to shift as often. its a little too wide for mx though. with 20s it wasnt bad though

now with my 22s i have to let it rev out in 5th before i shift if i want it to pull it in 6th, but you get used to it and after a while dont notice anymore.

 

shaved head is a good cheap mod, and depending on how/where you ride the 15t tooth could be good too, because it sounds like you like your top speed lol

[Wildcardracing]

You have more flexibility with a cool head. Also, to get the same kind of compression numbers as a cool-head is capable of you will have to go more than .020 and then have the head re-chambered to correct your squish clearance.

[colby72olds]

do any of y'all know if there is a way to tell how much the head has been milled? Mine has been milled before I bought it and I had it milled too, so there's no telling how much.

I would like to measure it and see before I put the motor back together, to know if I need to order a new head. I don't want to get it back together and be at about 190 psi, lol.

[shee rips]

do any of y'all know if there is a way to tell how much the head has been milled? Mine has been milled before I bought it and I had it milled too, so there's no telling how much.

I would like to measure it and see before I put the motor back together, to know if I need to order a new head. I don't want to get it back together and be at about 190 psi, lol.

there may be anothe way, with the head still off, but i would put it on and check squish and do a compression test.

for reference, my squish is about .035 with the head milled .020

[colby72olds]

I just wanted to check and see if there was anything I could do before all of that, but it won't be a problem to wait until it's reassembled.

Thanks