30m Carb 9.8:1 - 6.5:1 gear set ??? Some one help please???

[Arctic Wolf]

Hey all Scootaholics.
The wolf here from Canada Eh... Im going to be tearing my 2000 honda Dio AF 18E down very soon and am snapping up parts and pieces here and there of what I can afford.... So far the list is pretty straight forward Ive got a reinforced crankshaft ( Thought of going stroker but read the article that says not to go stroker if you want longevity in your motor ). I ride my bike back and forth to work everyday.. And amone that goes out for 150mile rides once a month.
I picked up a Pref Variator the Nicasil 75CC bore kit ( which requires a bigger carb ) a Typhoon Exhaust and now am thinking of a 30m carb for the bore kit.. Would a 30 be to big?? It is a OKO brand with a dual read....
And as for the tranny well Im thinking of going with either a 9.8:1 gear set or a 6.5:1 gear set but dont know which one would be a better fit.???? Not to say that I will also be picking up a 2K centre spring for that new Pref clutch.. Theres allot of of hills out here in Surrey so Im hopping as to have a good set up..
Right now everything on my bike is all stock and my top speed is 50 - 55 KMH ( about 31 - 34 MPH )
Also with all of this would I need a Pref CDI??? Ive read where there just a big waste of money.. But have no clue...

Hopefully Im headed in the right direction to having a quick bike.
Could some one let me know if theres anything that Im eiter missing in my list of parts to have or get... Or if this idea of mine is not very good could some one write down a list that I could follow...

Thanks Wolf

[bakaracer]

The 30mm carb is way to big for that bore size.A 24mm or 28mm carb.use the 28mm if using a good chamber pipe with a good ported cylinder if not your just over carbing the engine.I prefer the 24mm for that size bore.as for the gears,yes surrey has alot of hills and some of them are long so go with the 9.8to1 or if not get the 9to1 gears.As for the cdi i think the model bike you have will need the aftermarket cdi because those bikes come restricted from the factory but you should set the bike up first before buying the cdi and see if it runs good.you might not need the after market cdi.

[bradthreee]

Search threads that were started by the author "Wheelman-111". He is running the nikasil kit and has already done most of the grunt work. Read his threads to help save headaches.

Maybe he'll even grace your thread with his presence...

[Wheelman-111]

Greetings:

The Nik 78 has enough power to run 8.4s. It maxes the variator with 9.1:1s, even on the flats. 9.8:1s are not much taller than stock. Don't bother. 6.5s unknown, but probably too much, especially uphill.

The Mikuni 24 is a great carb for mine. Lots of examples of good results with 28mms, but 30 likely too big. The Typhoon is a 9K pipe, so the 24 is not a limiting factor. In fact I went just as fast with the stock 14mm carb, but acceleration wasn't as good.

See Flash III in Builds and in Performance Tech.

[808BMW]

24mm carb, 8.4:1 or 7:1 gears

[Bear45-70]

Too much carb is way worst for preformance than not enough. A big carb tends to kill all bottom end and add next to nothing on the big end, especially on a 2 stroke.

[Arctic Wolf]

I got ahold of the seller that has the 30 and told him that I was mistaken and I want a 28 after reading your replys. Thank You.... So Wheelman says 8.4's and 808BMW says 8.4's or 7.1's. What if I went straight on down the middle and got some 7.8:1's do you all think that will work??.. And what about the 2K spring will that help??

Wheelman you mentioned something about a 9K pipe what does that mean???

[Wheelman-111]

Greetings:

The RPM-limiting factor on most 2-smokes is the pipe tuning. (in conjunction with port timing of course) A stock pipe won't support the same high revs as an aftermarket one, but delivers better torque in the lower range. All-out "racing" pipes allow/support higher RPMs, up to 10-11K or so I'm told, but sort of suck down low. The 28mm V8 pipe I have offers decent low-end, but not as good as stock. It really sings at around 8500-9,000, but power drops off above 9,750.

So, you select a pipe, discover its "sweet spot", then set your variator weights to match that engine speed.

[Arctic Wolf]

Ok thank you........ What I want to do is build a cruiser could you tell me what pipe would be better if there is a better?? Im wanting to build a dio thats going to be half decent on hiways for my 8hr rides I go out on. What would you say is the best fit for what Im wanting ??

[maddog]

The first part to replace would be the cdi with a u.s. elite-s which is the only restriction for the zx or live dio = 55 mph....