Should have brought the ones I posted up They were advertised as kehin.

If there made accuratly to Kehin spec they should flow the same!

Right!

I have just had a second run out on the bike (nice day ) to confirm my thoughts from the previous cold dark evening.....

The bike, fitted with 4x115 'Keyster' main jets is running fantastic, the midrange dip is barely there, indeed, it's hardly a dip, just a progression of performance from low reve - I still have throttle response & decent acceleration through it whereas before is felt 'sluggish & boggy', there is now a noticeable change in engine note at 6 1/2k (as 4 valve bike engines tend to) & the engine pulls crisp & cleanly right through - it now has a crisp bark as she accelerates.
I whipped a plug out & it was mid tan (was black with 115/118 RO mains)

It now feels right, sure I will get it redynoed sometime but may do a full service 1st (valves etc).

BUT along with changing jets, I also rechecked the needles (all ok) & noticed the needle retainers could be fitted 2 ways - I set them all the same (were mixed up - my doing). Not sure if this would make any difference to how the bike pulls.
Heres the thread....;

viewtopic.php?f=24&t=30933

Anyway, I'm now a happy bunny

Phil

so briefly Phil, what spec is your bike with the 115 Keysters in. Have you lifted the needle 0.5mm, is it otherwise stock, inc filter, silencer etc?

Completely stock, exhaust, needles, filter, airbox all standard & unmodified.

Phil

Sent from my HTC Desire S using Tapatalk

Do you have a link to the jet you ended uo buying. Gonna get some ordered up myself.

Here;
http://www.ebay.co.uk/itm/BRASS-MAIN-JE ... 391wt_1568

I ordered 4 x 115s
From the initial runs out, these seem fine but if I was buying again, personally, I get some genuine Keihin ones (I thought these were going to be but misread the listing).

Phil

Cheers for the link. You running front and back with the same jets then?

Yep, thought as it was built with 4 matching jets I'd stick with it. If it was a later bike I would have used different jets f/r.

....but then I wouldn't have needed to 'cos it would already have them in lol

Phil

Sent from my HTC Desire S using Tapatalk

UPDATE!

It is a while since I started this thread, so I thought I'd give an update on progress.
I fitted (aftermarket) mains - all 115s to replace the RO supplied 115/118s which I felt made the bike run too rich. The bike was originally fitted with original 110s all round & ran too lean.
When fitting the 115 jets I also placed all of the needle retainers allowing the hole in the base of the slide to show - it seems no one has picked up on the fact they can be reinstalled in 2 positions. I believe they do make a difference to the troublesome 6-7k flatspot area.....

The bike instantly felt better it felt right, the flat spot at 6-7k had all but gone & the engine pulled stronger above 10k.

She's now had a full winter service; all bearings stripped greased, all fluids changed, new plugs & (genuine) filters & valves done. Apart from the mains & pilots set to 2.25 turns (too lean with 2 turns) everything is stock settings, original exhaust & genuine Honda air filter

Here's the latest dyno run - it doesn't look that much different from the 1st runs but does show a slight improvement throught most of the rev range & doesn't compare to the difference on the road & in real world conditions.

Sure the bike is running quite a bit leaner to the previous run & feels better for it. Much sharper & crisper



Phil

Ps; the bike won't be going back to Quill (Golborne) - as when the Dyno guy was wheeling it out of the workshop he crunched one of the mirrors on a door frame slightly bending the screen brace & cracking a chunk out of the screen - he didn't seem overly apologetic & said I'd be able to get one from ebay......
Clumsy fecker
A free dyno run was the only consolation. Great

Phil

Reference to the damage to your bike - speak to the boss. Their business liability cover should insure the damages. Not fair you having to pay for their negligence.