1999 R1

New to the forum? Then say hello here
Post Reply
Boo
Newbie
Posts: 3
Joined: Sun May 19, 2019 2:48 pm
Bike Make & Model: Yamaha R1
Has thanked: 0
Been thanked: 0

1999 R1

Post by Boo »

Hi everybody, I’m new to the forum and have a few questions about my 1999 R1. Everything connected to the exup has been removed prior to me owning the bike , and I mean everything! My question is this, is there a definitive list of settings to get it to run smoothly. Mine has a massive flat spot away from lights etc and seems to be over fuelling massively? Any help appreciated cheers


laney1981
Been Here a While
Posts: 170
Joined: Mon Jan 28, 2019 4:51 pm
Bike Make & Model: yamaha R1
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by laney1981 »

Sounds like the previous owner has pissed about with it and not had the fueling set up. Needs to have a fueling run on a dyno and the carbs setup accordingly.

Good luck.


Sent from my SM-G960F using Tapatalk


Last edited by laney1981 on Sun May 19, 2019 3:41 pm, edited 1 time in total.
User avatar
Danf1
Donator
Donator
Posts: 3262
Joined: Sun Aug 21, 2016 1:26 pm
Bike Make & Model: 4c8,4xv
Has thanked: 0
Been thanked: 1 time

Re: 1999 R1

Post by Danf1 »

As laney says dyno run is always a good idea with a bike that’s been modified by someone else it can give you a base line to work from.
Aj2012
Been here too long
Posts: 259
Joined: Thu Oct 12, 2017 4:58 pm
Bike Make & Model: YZF R1M
Location: Spain
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by Aj2012 »

Agree with all above, get it on the DYNO if you are not comfortable adjusting carbs, you might also find that someone has been messing with the jetting, and the setup may be hard to adjust/tune without the DYNO in that case.

I kind of miss working on carbs used to enjoy stripping them down cleaning and refitting....




Sent from my iPhone using Tapatalk
Boo
Newbie
Posts: 3
Joined: Sun May 19, 2019 2:48 pm
Bike Make & Model: Yamaha R1
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by Boo »

Thanks for your help everyone
User avatar
Moise
Donator
Donator
Posts: 8889
Joined: Wed Jul 09, 2014 8:19 am
Bike Make & Model: Yamaha R1 4xv
Location: Auckland, New Zealand
Has thanked: 59 times
Been thanked: 59 times

Re: 1999 R1

Post by Moise »

The alternative of course is to refit the EXUP and change the carb jetting back to standard. That may not be a cheap option if you have to replace everything, but neither will a dyno tune on a carbed bike.

Probably depends also on what you're planning to do with the bike. You won't get the smooth, bottom end throttle response without the EXUP, but you should get more power.
"You don't get slower with age, you just get more cautious." Michael Rutter

1999 4xv in blue
User avatar
polar
Donator
Donator
Posts: 2642
Joined: Thu Dec 14, 2017 7:48 am
Bike Make & Model: FJR 1300, MT10SP
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by polar »

I would first strip the carbs and find out if they are standard or have been messed with. If the exup has been removed they may need a dynojet kit fitting.
User avatar
Steve R1
Donator
Donator
Posts: 13575
Joined: Fri Dec 06, 2013 9:28 pm
Bike Make & Model: R1M
Location: Warrington Cheshire
Has thanked: 0
Been thanked: 1 time

Re: 1999 R1

Post by Steve R1 »

Welcome to the forum and good luck sorting the bike out


Sent from my iPhone using Tapatalk
Dogs leave paw prints in our hearts
User avatar
jompy
Moderator
Moderator
Posts: 19692
Joined: Wed Jul 03, 2013 8:24 pm
Bike Make & Model: 98 4xv Half-One
Location: Derby
Has thanked: 46 times
Been thanked: 38 times

Re: 1999 R1

Post by jompy »

Welcome in Eric
As the lads have said you have 2 options
A) Get the bike on a Dyno and set up properly
If your going down this route but the previous owner has removed the Exup valve then i'd be looking at getting aftermarket downpipes and doing it properly , blackwidow i think it was do a set
B) you need to check to see if the Exup is still in place and has been wired open or if the Exup valve has been removed .
Theres usually three main reasons for removing or wiring up the Exup
1) the Exup has seized
2) the servo motor had died
3) the Exup cables have broken
You need to check all three before you make your mind up what to do
If the Exup is seized you can get a decent second hand set of downpipes with an Exup , They're usually on Ebay for up to £150 but i got a really nice set for £60 last year .
The chances are that the servo motor may well have been left in place so that you don't get the servo/Exup error code on the rev counter so you just need to check its working .
If your really lucky it'll just be the cables and you can get replacements cheap enough from Wemoto
User avatar
polar
Donator
Donator
Posts: 2642
Joined: Thu Dec 14, 2017 7:48 am
Bike Make & Model: FJR 1300, MT10SP
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by polar »

I do agree with Jompy putting the exup back in is probably the best thing and the cheapest route because you may then find the fueling does not need messing with.
Boo
Newbie
Posts: 3
Joined: Sun May 19, 2019 2:48 pm
Bike Make & Model: Yamaha R1
Has thanked: 0
Been thanked: 0

Re: 1999 R1

Post by Boo »

Hi guys thanks for your advice, I’ve spoken to a local Dyno company and he said pretty much the same about going back to Exup, so I’ll be costing that route I think . Once again thanks for your help and advice
User avatar
jompy
Moderator
Moderator
Posts: 19692
Joined: Wed Jul 03, 2013 8:24 pm
Bike Make & Model: 98 4xv Half-One
Location: Derby
Has thanked: 46 times
Been thanked: 38 times

Re: 1999 R1

Post by jompy »

If your on facebook try
R1 parts
YZF R1 parts uk
Simon Hughes
Ian Morgan
And
Peter Hook
Are all good guys
Post Reply