Search found 45 matches

by HI808SYM
Thu Apr 01, 2021 4:17 am
Forum: Builder's workshop
Topic: rotor kit help
Replies: 1
Views: 2824

rotor kit help

aloha i recently installed a TWH rotor kit on my sym dd50. stock carb/manifold ruima 44 ministroke crank 8.74 gears sito plus exhaust was expecting more out of it i guess. bike was already running good so just bolted on rotor kit to see if it would give me even better performance. can feel the engin...
by HI808SYM
Thu Apr 01, 2021 2:31 am
Forum: Builder's workshop
Topic: Flash 9: Sanity Restored
Replies: 109
Views: 94321

Re: Flash 9: Sanity Restored

fun thread. why did you go with contessa over corsa for this build. maybe corsa would push you to the 60+ range...
by HI808SYM
Tue Mar 09, 2021 1:48 am
Forum: Performance Technical
Topic: Mhr mini stroke?
Replies: 5
Views: 5195

Re: Mhr mini stroke?

veedubh20 wrote: Tue Feb 09, 2021 3:40 pm does work.. i have those parts brand new
crank44 and malossi cast bore
what the price? any pics?
by HI808SYM
Sat Aug 19, 2017 5:31 pm
Forum: Builder's workshop
Topic: 54mm build/ nuts packed in box
Replies: 78
Views: 89308

Re: 54mm build/ nuts packed in box

there are special "slim" crankshaft bearings that are used with this crank.

if you use the stock bearings the case will not close and seal together.

i have slim bearings for sale if you need a set.

lmk

btw nice build very meticulous very nice
by HI808SYM
Sun Sep 04, 2011 7:53 pm
Forum: Scooter Showcase
Topic: what kind of honda scooter is this guys?
Replies: 37
Views: 17617

Re: what kind of honda scooter is this guys?

looks like a stock sym dd50 block with a stock painted exhaust.
by HI808SYM
Wed Aug 31, 2011 6:36 pm
Forum: Performance Technical
Topic: New 21mm Oko Carb setup help
Replies: 19
Views: 8949

Re: New 21mm Oko Carb setup help

scottinscotty wrote:and im' extremely happy with my black 21mm oko carb! thanks everyone for your help!
so you are going to use your stock oil pump and not have to premix with the 21mm?
by HI808SYM
Tue Aug 23, 2011 6:20 pm
Forum: Scooter Showcase
Topic: SYM DD50 Build...
Replies: 59
Views: 45230

Re: SYM DD50 Build...

veedubh20 wrote:I can port sym block. :naughty:
wish i could
by HI808SYM
Thu Aug 18, 2011 5:51 pm
Forum: Scooter Showcase
Topic: SYM DD50 Build...
Replies: 59
Views: 45230

Re: SYM DD50 Build...

i was wondering how your build was going.

thinking of running a similat setup.

did you do any block porting? i know my SYM has a mini boost port and really small intake ports.
by HI808SYM
Tue Aug 09, 2011 2:57 pm
Forum: Performance Technical
Topic: Difference between Honda DIO motor and Taiwan SYM motor
Replies: 8
Views: 6157

Re: Difference between Honda DIO motor and Taiwan SYM motor

Should fit! Honda bearings and seals. Dd case is smaller on intake, transfer n boost port. Can be ported! 72cc is a perfect size on Dd only n af16/18... I got japan motor af18 that use s crank . :thumbwink: All need is get a Japanese wife. :lol: haha. got the wife part covered but I still need the ...
by HI808SYM
Sat Aug 06, 2011 5:44 pm
Forum: Performance Technical
Topic: Difference between Honda DIO motor and Taiwan SYM motor
Replies: 8
Views: 6157

Re: Difference between Honda DIO motor and Taiwan SYM motor

does anyone know if the crankshafts and bearings are interchangeable? i need to install a new crank and was wondering if the honda bearings would fit.

and if the case metal is not as good wouldn't that mean its easier to port than the AF16?
by HI808SYM
Fri Aug 05, 2011 4:27 pm
Forum: Technical Help
Topic: loose oil pump
Replies: 3
Views: 1970

Re: loose oil pump

the o ring is in place.
by HI808SYM
Fri Aug 05, 2011 4:02 am
Forum: Technical Help
Topic: loose oil pump
Replies: 3
Views: 1970

loose oil pump

was changin my spark plug today and while i was twisting the throttle i seen my oil pump moving... i have the SYM with the cable controlled pump. cant figure out why its loose. all the bolts are tight but the metal piece that goes through the oil pump to hold it in place can move around. the bolt th...
by HI808SYM
Thu Aug 04, 2011 3:41 am
Forum: Performance Technical
Topic: 72cc looking to run 9.1 gears
Replies: 39
Views: 10328

Re: 72cc looking to run 9.1 gears

thanks wheelman. i have a sym dd50 so i think it already has the ZX seup.
by HI808SYM
Tue Aug 02, 2011 5:13 pm
Forum: Performance Technical
Topic: 72cc looking to run 9.1 gears
Replies: 39
Views: 10328

Re: 72cc looking to run 9.1 gears

just a heads up.. with my polini contesta, oko variator, jetted carb, uni .. my setup hit 60 and ran out of space... my boy has a built aprilia with a speedo that goes upwards of 60 and he matched me... so it's gotta be pretty accurate... by the way it's still the stock carb.. and about 7900 rpm.. ...
by HI808SYM
Mon Aug 01, 2011 6:23 pm
Forum: Technical Help
Topic: Need Help malossi leaking base gasket
Replies: 9
Views: 3647

Re: Need Help malossi leaking base gasket

probably need to put heli coils in place of stripped threads. Even if the torque wrench clicks at 8. Since it won't click at 10 the threads are pretty much gone, and will probably give you problems down the road.. don't know if drilling and tapping to a 1/4x28 would work or not. .what is that? how ...