Hi Guys!

If you reply please do in English (Haha) Seriously...

I have a Custom Chopper/Bobber that has been reworked to the Max using a Suzuki Crystal 110cc Jet Cooled Block. Since I am in Thailand and the engine/bike was produced here I was able to find a Head and Cylinder to complete my task.

I was able to find Cylinder that was bored 125 over and piston and Head to match with a 10:5 to 1 Compression ratio. Bike runs good after I increased exhaust tube from .75" O.D. to 1.25 I.D and used a Suzuki 125cc Expansion Chamber and silencer.

I always had good plug readings in normal driving and Extended drives on Super Highway. Speeds up to 85/90 kph. This was at a range of 5250 RPM. WOT is a different story. Now to remind you this is a 2T Engine.... In 4th gear with WOT I can turn over 8500 RPM plug reading at showing a lean mixture at this point, Exhaust Sound is a deep Baretone Growl, Exhaust has been changed from a .75" O.D. tube to a 1.25" I.D. also uses a 125cc Expansion Chamber and Silencer.

I have done what I can to the stock Carb. Oil Injection is not an issue as it is connected to block and reed cage.

I have a Kei Hin Carb from a 2004 Honda Sonic 125cc, reason we chose this Carb is because it has a 28mm enlarged Ventura and a spring loaded throttle return. Only Issue is the Pressure activated piston that operates needle valve. I know carb is from a 4T engine and valve is opened with back-pressure as throttle is advanced.

This is where my request for help lays.

1. Can I use Exhaust pressure? Modifying exhaust tube @ entrance to Expansion Chamber on Top of tube to not catch oil. Adding a fitting to attach High Temp Silicone Tube and forming a stainless tube to custom fit from Carb to this fitting? Pressure here would decrease with RPM reduction I believe.

2. Could I use Vacuum to open, thus blocking off and sealing Pressure input port? (Since I have Machineshop on Property) and either redesigning top plate to carb or making new with Vacuum Port added. I would need to know what RPM I should have a fully open Ventura (piston/needle valve fully raised) I have a half dozen springs here to modify tention and adjust how much Vacuum is needed to control movement of piston. I am worried here about the response time RPM to return to Idle, maybe not an issue because throttle plate shuts down Vacuum also I believe.

3. Or I can create a new Carb Top to fit this Chamber? Machining manual linkage to connect with Throttle Plate/Cable action to operate Pressure cylinder making it work alongside throttle plate. If I choose this option Needle valve would work with Throttle Plate thus not flooding engine and sync'd with throttle. Giving instant response from Idle to WOT and Back to Idle.

I have already Built a Intake Adapter to bolt to a New Suzuki Crystal reed cage intake that was opened up to 28mm and tube end to match and fit flush against carb using Silicone tube and 2 clamps for vacuum tight seal. Adapter makes a 90 degree turn to the right side of engine so cables and fuel lines would be unrestricted and protected up under Petrol Tank. This would also place Air Filter in same position has Harley Sportster. Using same style, reverse flow (Air drawn from area around Carb, not from street side or sides of filter) but from bottom up through foam/paper filter as we have on most stock bikes here in thailand (Yamaha/Honda/Suzuki).

This does 2 things:

1. Lets me use foam with oil coating and corrigated Paper backing. Since aircleaner is rectangular in shape 4"High x 8"Wide 2.5"Deep. Giving me 2 air port to draw from, both being 2"Wide x 1.5"High and using the corigated paper backing triples filter surface. Plus Machine Air filter cover to be Chromed and a High Polished smooth exterior. (Actually I used element from Honda dream and modified to fit my application)

2. Giving me a 5 minute element clean or replace proceedure. Also gives front access to Carb removal

Any Ideas on this on this modification please discuss...
Here is rear view of bike... this is a shot of the 110/80/18 rear tire... Plenty of room to go wider, will try a 120/80/17 next if still expansion room will go to 140/80/17 (would like to go to 1 150/80/17 or a 150/70/17).
-DavidRide On

What the heck is a Suzuki Crystal 110cc  ???    sez you?


Why it is simply the most RYCA'd motorwhizzer that all of time of course.





It uses a two stroke engine of course, so we will let our two stroke eggspurt Mr. Bill tell you all about Klotz and how it can keep you from ever having to do maintenance on your motorwhizzer, ever.

Other than that, you are in the wrong forum, actually you are in the wrong site entirely.

All you will get here is a few curious folks asking you what the heck a Suzuki Crystal 110cc is ..... and why are you here trying to ask us questions about it?

Me, I think its cute.  

Total displacement of it is on the order of what I would hope to get as additional displacement whenever I overbore my stock Savage jug and put in a big arsed piston.

I've never seen a CV carb on a 2-stroke either.  I doubt you'll ever get the vacuum necessary to get that carb to operate correctly all across the rpm range.  Every 2-stroke I've ever had has had a carb where the slide is directly operated by the cable. Or, if a tiny 2-stroke, one of those tiny little pumper carbs like on a weed-eater.

I bet that little bike is great fun to ride.  You can't really get anything like that here.

here are some Pics as of 2/19/2014

Right  side... showing Hose connection for pressure (+) not Vacuum (-) black Male fitting @ top rear of carb (left @ top)

mpescatori wrote on 02/20/14 at 02:36:44:

Here you can see Electronic speedometer sensor (Rear of fork @ Top of Rim) and 2 rim attached magnets (Located here about 1200 hrs and 0600 hrs positions). Seems I cannot post more then 1 picture at a time....

davidstipek wrote on 02/20/14 at 04:31:32:

Actually this is a Suzuki Crystal RC110E