what's the pros and cons

[sheefreak]

Oh no! Do we have another person going bigger this year?? lol

 

Going bigger, but I can't afford to keep up w/you lucky bastards LOL. Since I couldn't get you to sell me the fastest 4 mill cub around, I figured I better go 10...

[millertime]

well i unerstand the stroke and offset... up 2 more and down 2 more = 4mil .. and what you say makes sense, what i think is screwed up is when you oreder the crank they have a mark like this* then say you need special pistons.. then you look them up and they tell you you need this piston... so you order that.. but then don't say anything about the head...

So where is the best place to buy cool head domes cut ? right now i have 17cc domes in it ?

[firebanshee]

well i unerstand the stroke and offset... up 2 more and down 2 more = 4mil .. and what you say makes sense, what i think is screwed up is when you oreder the crank they have a mark like this* then say you need special pistons.. then you look them up and they tell you you need this piston... so you order that.. but then don't say anything about the head...

So where is the best place to buy cool head domes cut ? right now i have 17cc domes in it ?

 

NOSS, is a sight sponser you can see the banner on top of the page sometimes he probalbly could set you up, or alot of people use JEFF from FAST or KEVIN from HERR, or any motor builder that offers in house machine work can re cut the domes you have. I use a local shop here in Oregon, Redline Racing, and i have also bought some from Trinity that were pre cut. 17 is a pretty small dome you must be running straight race fuel or alky. Are you building a CUB motor or a STOCK cylinder motor CUBS don't need cut domes. Some kits say you can run a spacer plate instead of cut domes but it throws the port timings and durations off and you will not get near the power with plates i would not use a plate on a 4mil.

[millertime]

thanks for the reply... we ride st. anthony dunes and it is 5,000 feet here... it ha 160 lbs of comp. at this alt. i mix 50- 50 race gas for it..

[firebanshee]

thanks for the reply... we ride st. anthony dunes and it is 5,000 feet here... it ha 160 lbs of comp. at this alt. i mix 50- 50 race gas for it..

 

With that elevation that make sense :cool: MERRY XMAS

 

I wan't to go there and ride some day i heard it is AWESOME.

[millertime]

oh ya ... they are stock cylinders bored to 66mm and venom ported it with boost ports.. it has v force 3 reads.. cpi in frame pipes... it is pretty fast... hope it gets faster... i bought the long rod 4mil crank and the 795 pistons.. timing plate.. and pods for the carbs... it had a K&N pro flow in the box with no lid..

thanks for your help about the domes..

i live like 30 mins from st.anthony dunes.. we go allmost every weekend durining the summer.. it is a blast to ride there..

Edited December 25, 2008 by millertime

[sheefreak]

I hate to point out yet another problem but if these jugs were previously ported for stock stroke, the port timing will not be optimal for a 4-mill crank...

 

You may want to talk to the person who ported it in the first place and see if this can be addressed and should also be able to cut you some domes for the stroke.