Jrkk's 1100 cafe build

Document your ongoing rebuilds and restorations here
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Ivor
Posts: 239
Joined: 06 Sep 2017, 20:49
Location: Hampshire UK overlooking the Needles :)

Re: Jrkk's 1100 cafe build

Post by Ivor »

I have an S1000rr and its an awesome bike that's for sure , but yours steals the show :) good work Jr she looks well tidy :)
1995 ZR1100A2
arejay
Posts: 36
Joined: 05 Sep 2017, 12:12
Location: west sussex, england

Re: Jrkk's 1100 cafe build

Post by arejay »

i have an s1000r at the moment which replaced a couple of yamaha r1's and a z1000 and i have found that every year i have owned it the zephyr has clocked up a higher annual mileage than the other bike in my garage
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

Thanks.
Today was good motorsport day. Crazy street racing, same as isle of man tt. I forgot to take pictures, only one bad video.
Sadly yesterday one driver crash badly and passed away later in hospital. That is always terrible to hear.
We have booked track day (no not with zeph) in start of July, but now I'm kind of scared. I think I'm getting old.
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

First test ride with flatslides.
After 5000rpm it's good and hard pull. Mixture little at rich side. Cruising with small throttle
opening, it's very lean. Ordered bigger pilots.
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750R
Posts: 49
Joined: 14 Sep 2017, 18:42

Re: Jrkk's 1100 cafe build

Post by 750R »

Which jettings you ride? i Also use the RS36 on my 1100 - and have same mixture Problems like you ;)
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

All stock. 135 mains, 17,5 pilot,
9chy10-99 needles (supposed to be same as stock y3)
Emulsion tubes stock y6
acc pump hit's on all most immediately when opening throttle.
I opened idle mixture screws little more, they are now 1 full turn open. Idle afr is now 12 and it helped little at low speed cruising.
I ordered 30 pilot's, I think next 20 is so small change, that it's better to get big leap.
4.8€ eatch, so I can order more when tested 30.
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

Forget to mention that i raised needle to the 3 position from top. (stock is 2)

So idle is afr 12 cruising 15-16 afr and full open 11-12 afr.
Do you have mikuni tuning manuals? They are good reading, basic stuff though.
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

Raised needles one more groove, so they are now second lowest groove. Little bit better but just off idle cruising still very lean. Top end very rich.

Nice ride today with my friends though.
20190621_001713.jpg
750R
Posts: 49
Joined: 14 Sep 2017, 18:42

Re: Jrkk's 1100 cafe build

Post by 750R »

Manuals i have - helpfull Informations in there ;) You use the RS38 - right? my needle in the RS36 are 9DZH3-50 in Stock and now 9DZH3-30. Main is at the moment 130

Greetings
jrkk
Posts: 148
Joined: 20 Jan 2018, 10:53

Re: Jrkk's 1100 cafe build

Post by jrkk »

Yes I have rs38.
Mikunioz.com is best site finding parts and manuals, however they don't list witch needle is ritcher. In this site is good listing for needle sizes.
https://www.jetsrus.com/a_jets_by_carbu ... ikuni.html
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