OzVMX Forum

Marque Remarks => Maico => Topic started by: VMX Andrew on May 13, 2014, 08:09:05 pm

Title: jetting specs for Mikuni ?
Post by: VMX Andrew on May 13, 2014, 08:09:05 pm

Have a brand new flatslide Mikuni (was meant for my 84 Honda CR500) that i would like to try out on my 81 Maico 490.
Has anyone tested this out, if so what would the jetting specs be ??
Cheers Andrew.

Title: Re: jetting specs for Mikuni ?
Post by: oldyzman on May 13, 2014, 09:17:55 pm

Gday Andrew, Keep us posted as a mate of mine has been going through the same... I think he is now testing a lectron as there was a lack of parts for the bing or vice versa...

Title: Re: jetting specs for Mikuni ?
Post by: shelpi on June 01, 2014, 01:49:55 pm

Quote from: VMX Andrew on May 13, 2014, 08:09:05 pm

Have a brand new flatslide Mikuni (was meant for my 84 Honda CR500) that i would like to try out on my 81 Maico 490.
Has anyone tested this out, if so what would the jetting specs be ??
Cheers Andrew.

mikuni tm 38mm flat side specs to suit maico 490
main jet   320,330
pilot jet   35,40,45
jet needle  6FJ40  middle groove
needle jet (emulsifier tobe)  R-O
idle air  start @ 2 & 1/16 out
float level 17.5 mm
start rich then go towards the ideal, use NGK 8e plugs have 9 and 7 on hand and do plug drops often and plenty
ring Tom Hatrick 07 47712677 for parts
buy SUDCO MIKUNI RACEING CARBURETORS
5TH EDITION TUNING MANUAL only costs $12.00 has all ya want for RS VM HSR TM TMX BN settings, trouble shooting, parts, etc etc............ ;)

Title: Re: jetting specs for Mikuni ?
Post by: VMX Andrew on June 06, 2014, 06:19:45 pm

Thanks for that Shelpi, ill get around to that change over real soon in the next few weeks.
Thanks Andrew.

Title: Re: jetting specs for Mikuni ?
Post by: shelpi on June 07, 2014, 10:04:24 am

Quote from: VMX Andrew on June 06, 2014, 06:19:45 pm

Thanks for that Shelpi, ill get around to that change over real soon in the next few weeks.
Thanks Andrew.

no worries Andrew, Ive done the carby side of it, but need inlet manifold (old ones cracked) and air filter to carb rubbers for mikuni, whats the best place to source the stuff ??? MC490

Title: Re: jetting specs for Mikuni ?
Post by: VMX Andrew on June 07, 2014, 11:05:41 am

I get all my Maico parts off Les at VMX Unlimited and if he don't have it in stock the next port of
call will be Bike Buzzard on Ebay in the USA.
Only problem with that mob is that you have to wait about a month for the parts to turn up !

Title: Re: jetting specs for Mikuni ?
Post by: VMX Andrew on June 07, 2014, 11:12:57 am

http://www.ebay.com/itm/1971-1981-MAICO-AIR-BOX-BOOT-MIKUNI-250-400-440-490-NEW-/141305331411?pt=Motorcycles_Parts_Accessories&hash=item20e6743ed3&vxp=mtr  ;)
Or try this Mob !

Title: Re: jetting specs for Mikuni ?
Post by: VMX Andrew on June 07, 2014, 11:28:19 am

Another !  http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&sqi=2&ved=0CCIQFjAA&url=http%3A%2F%2Fwww.vmx-service.eu%2F&ei=UGqSU9n2PI7rkgWX_YDwDg&usg=AFQjCNH6SO4Oac60BhnEu_FEQ9QQEyVHbw

Title: Re: jetting specs for Mikuni ?
Post by: shelpi on June 08, 2014, 02:42:27 pm

Thank you VMX Andrew ;)