finally ivanising..

[ogri48]

the only way to know for sure is a dyno run I spose..

[robbo]

I'd agree regarding the choke becoming redundant after Ivanising, although not used much in winter. Couldn't comment on mpg as Mike worked his magic when I'd just bought the bike, but get around 180ish before the light comes on if not used too enthusiastically.

[ogri48]

im wondering if ive altered something when I balanced the carbs. I initially turned the screws way to far, so much so the throttle wouldn't twist.

[VNA]

aha. so is mine running too lean you think?

Dunno.  I thought your comments were a wee bit odd.  Unless the weather is cold I don't need the choke.  Been like that since Mike Ivanised it.
The other thing I noticed low down was riding through towns.  OE at small constant throttle openings she surged.  The bike wasn't smooth and settled.  It was a wee bit as if you had a shaky throttle hand.  But after Ivanising it was smooth as silk.
I always figured it ran lean OE to get through the emissions certifications.  Was one of the last bikes on sale with carbs, and basically emissions standards killed off carbs.
Maybe PM Mike. 

[VNA]

the only way to know for sure is a dyno run I spose..

Double check eveything before you throw money at the dyno.
Ivans kit should be plug and play.  No Dyno time required.

[ogri48]

yup mate. I'll pm mike..

[Ricky]

My bike was a bit of hit and miss to start, very temperamental. I never seemed to have the nack. You needed a bit of throttle,  not to much or it would over rev, to little it would not fire and a mix of choke thrown in.Since Ivanising it has improved but still temperamental and I still don't seem to have the nack.

[Falcon 269]

Stock fuelling is lean on the bottom end, rich at full throttle.  Ivan's kits specifically address this and it's the reason for opening up the pilot circuit bypass holes, Paul.  As others have said, should require less choke than before now and should be running richer not leaner on part throttle.

You're now going to ask me what might be wrong.  

I can't think of anything you would have changed by synch'ing the carbs.  You don't report any symptoms that might suggest carbs incorrectly fitted, which is good. I would focus on mixture screw settings (4 2/3 to 5 turns out with two holes enlarged) and float heights.  My money is on the latter.

[ogri48]

I just thought of summat fellers. I had to get a new plug for the carb manifold take off as it had a dodgy one. the other three looked ok but slipped back on very easily (no pliars to open clips just pushed straight back on)with the clip in situ. im wonder if disturbing them has made them leaky. if so perhaps they leak when its very cold (three degrees yesterday here and just as cold for my run in today) but as the engine heat gets to them tthey flex and expand a tiny bit and seal, hence the problem dissaears. This problem has only manifested since 1) I balanced the carbs 2) I removed and refitted the manifold plugs 3) it got really bloody cold.
So, i'll order new plugs/clips off fowlers today (should have changed them all the first time, just ordering the one the postage was as much as the parts!) if that doesn't sort t carbs off again this weekend, at least ive got that down to an easy job now, and with a big heater in the workshop im enjoying being out there with me dawg and raddyo..and cheers mike, first thing i'll check again is the float heights..

[ogri48]

actually im in uni this afternoon so ill pop to fowlers first and pick the buggers up...

[VNA]

Sounds like a plan.Still well impressed you tackled this yourself.  Hope the new plugs and clip do the job.
You will need the choke at 3 degrees C!  Mine will tick over without choke after about a minute or so at that kind of temp.  Though it will take a mile or so before it will accept plenty of throttle without bogging down. 

Bit cold for riding the bike surely.  Snow has appeared to day up here.

[ogri48]

I cant even contemplate using me van or the car to get into Bristol mate, its 35 mins on the bike, would be 2 hours in a box and cost me a fiver a day to park at uni campus. I think it is them plugs you know....ran perfectly today even though it was snowing and only needed half choke for about a mile. I think they've bedded in now or at least sealed themselves..but went to Fowlers and got four new uns (so I got a spare) Anyhoo, I'll fit them tonight

[VNA]

You're riding in the snow :eek

[ogri48]

took the carbs off last night and wound the mixture screw in half a turn on every carb, so now 4 and a quarter out instead of 4 and three quarters.
For whatever reason it was an utter bastard to get the carb bank back in the inlets stubs. I actually hurt my bloody back with all the bending and fannying around! once it was all back together I thought "right if its still fluffy when cold it can foccin stay that way"..
fired it up.
finally..perfick.
this mornings commute was the acid test..hardly needed any choke, ran faultlessly even when cold, and still goes like shit of a shovel at the top.
I have no idea why mine needed tweaking a tad from Ivans specs. Mileage perhaps? (40k) im guessing most where done at low miles. either way I don't care,its sortd thats all that matters..

[VNA]

Sounds good.She should pick up very keenly at 2.5k compared to stock.
And run smooth at 35mph in 5th and 6th wi zero surging.
Hope the back's OK.

[ogri48]

cheers mate... the bike is pukka, the back not so much so lol.
Christ I hate getting old,
I mean, who puts their back out refitting carbs... :'( :'( :'(

[VNA]

Sounds good - well, the bike does anyway. :lol
Hope that back gets better.

[ogri48]

just had the carbs out and in again lol, and its getting easier..there are a couple of things I do now which make it a lot more accessible. Basically, ive stopped taking silly short cuts which actually take longer to get past in the long run...
Firstly, I disconnect all the connectors in that big bunch just above the head. makes it far easier to work and see what your doing. a bit of switch cleaner doesn't go amiss before you click them back together. secondly, I undo the throttle cables and remove the outers from the bracket before I try and slide the bank out....gives a lot more room as it lets you lift the carbs before tilting/sliding them out.
Thirdly I use a little hooky tool to disconnect/re connect the inners...as mike said once you know how to its dead easy. you just gotta make sure you get the two throttle cables attached right when your re assembling so they lie correctly side by side once the carbs are in place instead of being tangled around each other.
fourthly tings like the choke cable and carb de ice pipes I trap behind ht leads so they are out of the way
fifth, a bit oh heat and light smear of grease on the inlet stubs, then straddle the bike to pop the arbs in square
lastly...relax, take your time, and don't force anything. Its quite an enjoyable job really, and kinda satisfying.