|
|
Post by muttsnuts on Feb 25, 2014 13:05:32 GMT 1
ok, its been asked, discussed, suggested and the likes, but those in the know, have been aware for a good while that the PWK's are a better carb for the LC than the standard LC, so finally here is the proof. Before and after dyno chart for the same bike with the 2 makes of carb fitted, no other changes have been made since the tests  |
|
|
|
Post by mikee on Feb 25, 2014 13:26:06 GMT 1
net nanny wont let me see the results
hate when that happens
|
|
|
|
Post by muttsnuts on Feb 25, 2014 13:31:38 GMT 1
um, should be able to see the graph as its embedded into the message - unless its blocking the link to the image ?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 16:39:40 GMT 1
makes more power lower down the rev range so is going to be more fun on the road, I have had my pwk's on over a year and love em
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 16:43:39 GMT 1
n99 needles
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 17:20:51 GMT 1
its quite cheap to get a set of 30mm pwk's , well cheaper than 28's anyway and would make a interesting comparison, anybody got any pwk30's they want to donate for a test?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 17:35:42 GMT 1
yeah I would say so, might have to stretch some rubbers to get 30mm on but I have a spare set of rubbers so no biggy
|
|
|
|
Post by muttsnuts on Feb 25, 2014 17:59:12 GMT 1
where can you get the 30mm's from, I was looking for some the other day
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 18:17:01 GMT 1
I have seen some 30's on e bay before dave
|
|
|
|
Post by Eyrey1 on Feb 25, 2014 18:49:06 GMT 1
is that the printout off micks bike ?
from the weekend
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 25, 2014 19:17:37 GMT 1
No it's mars bars to show difference between standard carbs and pwk's
Mine are on the allspeeds v tsa thread
|
|
|
|
Post by Norbo on Feb 25, 2014 19:36:31 GMT 1
its quite cheap to get a set of 30mm pwk's , well cheaper than 28's anyway and would make a interesting comparison, anybody got any pwk30's they want to donate for a test? I tried to get some PWK30mm carbs last year but the place never got back to me and I lost there email address now .  |
|
|
|
Post by muttsnuts on Feb 25, 2014 20:31:34 GMT 1
um, have a spare set of PWK's, maybe 'll sling them on the milling machine and give them a 1mm tickle !!  |
|
|
|
Post by bare on Feb 25, 2014 20:42:01 GMT 1
Dunno guys.. Sudco ONLY lists these (genuine) Keihin PWK sizes. www.sudco.com/pwk.html AS everyone knows there are * many * cheap/crap quality Keihin Klones, almost all on Fleabay. IMO, fit one of those and the headaches begin :-) |
|
|
|
Post by steeley on Feb 25, 2014 20:54:02 GMT 1
would think you need to off set the boring of them.i had a pair of tzr carbs bored out and the machinist said he had to off set them to do the job.different make I know.oh had them taken out to 30mm.
|
|
|
|
Post by steeley on Feb 25, 2014 20:58:47 GMT 1
headcoats ,I was busting for a piss when I saw your link but after all that laughing I better get cleaned up .
|
|
|
|
Post by blakeseven on Feb 25, 2014 21:16:01 GMT 1
lol headcoats thats the definition of a smooth bore
|
|
|
|
Post by muttsnuts on Feb 25, 2014 21:42:54 GMT 1
LOL  I know I was trained by the REME (Rough Engineering Made Easy) (Royal Electrical Mechanical Engineers) - but fook me, that's got to be some of the roughest engineering I've ever seen !! - now that was funny, wonder if he got the desired results he thought he was going to get !! Maybe I shoudl try that on my PWK's - coz its not like they are very dear or anything is it !!! |
|
|
|
Post by muttsnuts on Feb 25, 2014 21:43:08 GMT 1
LOL I know I was trained by the REME (Rough Engineering Made Easy) (Royal Electrical Mechanical Engineers) - but fook me, that's got to be some of the roughest engineering I've ever seen !! - now that was funny, wonder if he got the desired results he thought he was going to get !! Maybe I shoudl try that on my PWK's - coz its not like they are very dear or anything is it !!! |
|
jools
Drag-strip hero
Posts: 299
|
Post by jools on Feb 25, 2014 23:09:19 GMT 1
Wonder what a pair of Lectrons would go like........??
|
|
higgsy
Thrash Merchant
Posts: 458
|
Post by higgsy on Mar 1, 2014 8:14:05 GMT 1
Christ on a stick, agreed that is the roughest bore I've seen. I understand the theory of surface atomisation by leaving a non polished surface to dissipate the mixture, but that's taking the piss  I've seen 'Uncle Bob' do this, very time consuming and involves a lathe and plenty of very careful hand fettling, his results look like a stock carb until you measure them  Your PWK v Stock Mikuni graph is exactly what I found, no real gain at the top end, but the midrange drive is fantastic, better than the graph suggests in the real world. Makes a big difference coming out of corners for sure. If I was after more top end I'l stick a pair of 34mm Mikunis on, I've had some very good results on them and the midrange drive is good too, the non powerjet VM series are a lovely straight forward carb and easy to set up. |
|
|
|
Post by archloafer on Mar 8, 2014 18:13:58 GMT 1
G'day Interesting thread this. Been toying with the idea of getting some better carbs... So the PWK's seem to be of a significantly different design to the standard mikuni's - is that the key to the performance hike, or the 2mm bigger bore? Or both? I had a bit of a mooch, and it looks like genuine 30mm PWK's don't exist - 28mm, 29mm, then a weird jump to 33mm and up. www.keihincarbs.com/carbs/pwk/gate.htmlThey do 'PE' carbs in 30mm though, although they look similar to the mikuni's. www.keihincarbs.com/carbs/pe/gate.htmlAny of you chaps got any experience of these? Cheers - David |
|
|
|
Post by yazza54 on Mar 13, 2014 12:52:35 GMT 1
Anyone tried lectrons?
|
|
|
|
Post by muttsnuts on Mar 13, 2014 14:47:42 GMT 1
nope, I haven't
|
|
jools
Drag-strip hero
Posts: 299
|
Post by jools on Mar 13, 2014 23:59:21 GMT 1
I've got some 34mm, 36mm & 38mm powerjet Lectrons but they are probably a tad too big .......
|
|
|
|
Post by yazza54 on Mar 15, 2014 13:57:02 GMT 1
I've got some 34mm, 36mm & 38mm powerjet Lectrons but they are probably a tad too big ....... you selling them or something? |
|
jools
Drag-strip hero
Posts: 299
|
Post by jools on Mar 15, 2014 22:48:00 GMT 1
don't be using 4 letter words on here..........Sell Its one of my biggest problems, I am a magpie LOL (just ask grunt33 about the LC tank.) I was lucky to get a box of used 36mm & 38mm (4 each) with bits off a guy in the USA for a good price. The 36mm's will replace the 34mm's on the 750. Maybe even try the 38mm's on it. I have to say that once set up I never have to touch them - no fannying around with main jet changes (coz there aren't any) But they do take some getting you head around with set up (throw the Mikuni etc books away to stop getting confused) |
|
|
|
Post by yazza54 on Mar 16, 2014 17:19:22 GMT 1
I'm tempted to get a set for my build, they ain't all the dearer than new pwks and like the idea of trying something different
Plus they look more of a true flat slide than PWK
|
|
|
|
Post by yazza54 on Mar 16, 2014 17:31:47 GMT 1
By the way, how do you run auto lube from pump through a PWK or lectron?
Also are these still gravity fed?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 16, 2014 19:29:58 GMT 1
|
|
I know I was trained by the REME (Rough Engineering Made Easy) (Royal Electrical Mechanical Engineers) - but fook me, that's got to be some of the roughest engineering I've ever seen !! - now that was funny, wonder if he got the desired results he thought he was going to get !!
