yamaha rs100 wreg questions?

hovercad · L Plate Warrior Joined: 19 Sep 2009 Karma :

Hello All,
New here couldnt find any where to introduce myself.So hello all now for the cheeky bit.
Daughter and I trying to get this dinosaur on the road.
Wondered if anyone can help with some information concerning that above bike.

Carburetor problem.
My daughter was putting the carb back together and managed to break the needle jet. (Long tube thing with holes down the side and hole through the middle.) She was wondering how tight she should do it up as it snapped.Durr
Cant find anywhere to get one or a carb any suggestions?

Fork Question
Had to replace the forks could not get RS100 forks for love nor money so got a set of RXS100 forks. Unfortunately lost the wheel spacer for the rs100 (spacer longer than the RXS) so cant make a spacer to use with the RXS forks.
Anyone know the dimension of the RXS front wheel spacer?
Its a drum brake model.

Any suggestions very welcome.

Hoped to have got it on the road by the end of November.But the way how things going glad I didnt tell my daughter which year.

Craig

stirlinggaz · World Chat Champion Joined: 22 Jul 2007 Karma :

Hi,
im presuming you mean the idle/choke jet.
what carb is it?
should still get spares for it, though might be cheaperwith a s/h carb.
let me know what carb it is & i'll have a look see what i got,
cheers,
GAZ

Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

hovercad · L Plate Warrior Joined: 19 Sep 2009 Karma :

Hello Thanks for your replies.
Awaiting a parts fiche for the bike.(Typical I order it just as the strike happens.)
See what information that brings up.

Craig and Rachel

hovercad · L Plate Warrior Joined: 19 Sep 2009 Karma :

Hello All,
Well parts fiche turned up today.
30 seconds later yamaha part number
164-14141-42 described as nozzle main. (All other documents call it needle jet.)
Looking at the jet that fits the nozzle 125 is standard so that ties in.

Now trying to find the part and possible the Mikuni part number.

The hunt begins.

Craig and Rachel

Vincent · Banned Joined: 16 Oct 2006 Karma :

Just e-mail or ring Allens Performance, they should be able to sort it.

https://www.allensperformance.co.uk/

or you can check the carb for a serial/type number, then use ths chart:-

https://www.allensperformance.co.uk/needle%20jets.html

I think you'll find the nozzle is NLA from Yamaha, they buy them off Mikuni anyway so they work out twice the price.

hovercad · L Plate Warrior Joined: 19 Sep 2009 Karma :

Hello Vincent,
Thanks for your reply.

Have looked at all the diagrams on their web page nothing matches. (their diagrams show a single piece jet.Mines a tube and a jet screwed into it.)

Have emailed them and just waiting for their reply.

craig

hovercad · L Plate Warrior Joined: 19 Sep 2009 Karma :

Hello All,
After emailing phoning many many place's all saying they can no longer get the part. no carbs around.
Found 1 place that hasnt go the part but can modify a different one to fit.
"The size P-2 is not available, but there is the option of a O-0 which we can machine to size."
Vincent you were right allenperformance were the one's
Thanks for the surrgestion.
Dont think its overpriced really 10-50 + Vat. Shame 3/4 week wait.

Still must be better than nothing at all.

What next???

thanks all.

Craig

. · Renault 5 Driver Joined: 18 Feb 2008 Karma :

I've used this place when I upgraded from a 24mm to a 28mm carb (to compliment some port work, oversize valves, modified cam timing and different cam profiles - although not on a Yamaha RS100 I hasten to add Wink

https://www.motocarb.co.uk/index.php/needle-jets/c_5.html

The 'series' number should be stamped on the main body as well as the size eg 182 P2 . The difference in primary and bleed jets is quite obvious, sounds like you have a bleed type.

May be worth a quick phone call.