I have a walbro carb that's mated to the PSWS reed kit, but I have no idea what model it is. It measures 15.5 intake side, and 18mm venturi. HUGE. The picture of the carb is shown below. On this website, they say its a walbro big bore carb. Anyone know the correct model number/type?
I will be doing another run of testing on the following setup next Sunday.
PSWS Racing Reed Kit
Walbro Carb
IP2 Pipe
Ported head
Last time I tried to get this reed kit tested, I couldn't get it tuned at all. I'm still a newbie when it comes to tuning walbro carbs. I need some advice on tuning these carbs. I've read on sites where they say start out at 2 turns and 1 1/2 turns on the High and Low settings...are they talking about full turns? Any other pieces of advice you guys have in tuning walbro carbs?
I don't know what's on a psws reed but All the walbros i have, have the numbers stamped on them on the side or the top, some times they may have the numbers in different spots than the letters but they are usually all on there.
I have a walbro carb that's mated to the PSWS reed kit, but I have no idea what model it is. It measures 15.5 intake side, and 18mm venturi. HUGE. The picture of the carb is shown below. On this website, they say its a walbro big bore carb. Anyone know the correct model number/type?
If you look closely you can see that the model number has been removed.
I asked Proline numerous times what the model number is but Kirk wouldn't provide the info.
Let me know if you find out the model number.
Yeah I looked around the carb and couldn't find it as well.
Do you have the proline reed kit? What settings are you using on the H and L?
Quote:
Originally Posted by caferacer
If you look closely you can see that the model number has been removed.
I asked Proline numerous times what the model number is but Kirk wouldn't provide the info.
Let me know if you find out the model number.
start out with low at 1 turn out this will start the bike easy because it will be alittle lean! once it is started turn the low speed out a little to bring the idle down! once you get to idle then adj high out about 1 1/2 turns take it for a spin and see what it does at wot if it surges it to lean and adjust high out farther until it runs like a raped ape at wot with out any surge! if you midrange is not good you might have to mess with low adj a little but use 1/8 turns on low as the bikes idle is affected by the low adj you might have to run low rich and will have to raise idle to keep the bike idleing! hope this helps snow! make sure you have the purge line hooked up also!
... I need some advice on tuning these carbs. I've read on sites where they say start out at 2 turns and 1 1/2 turns on the High and Low settings...are they talking about full turns? Any other pieces of advice you guys have in tuning walbro carbs?
Thanks.
-E
Ah, i was trying to hunt down the numbers for their reed kit that i didn't even get a chance to answer this. Well, when they say "1 turn out" they mean screw the screw all the way in clockwise untill it bottoms, be gentle cause they can get damaged. Then unscrew it anti-clockwise 1 full turn.
The needles just meter the amount of fuel that is mixed with air, so the more you unscrew them the richer the mix is, simple huh. Too lean and it bogs when accelerating, idles uneven and falls off the revs up top or even melts holes in pistons. Too rich and it doesnt like to idle smoothly, accelerates great but doesn't rev out. After a couple of goes you get the hang of it.
The thing with walbro carbs that most people dont realise is the pumping frequency of the engine, ie the crankcase pressure changes can have an effect on how fuel is metered. It is adjustable but very tricky, so it can be important to have the carbs pump tuned into the engine as well as having the right bore and mixture settings right. I wonder how the PSWS reeds would work with a SHA 16/16?
Thanks for the tips. I'll keep them in mind when I do the test on Sunday. Hpoefully it wont rain this weekend so I can do a full test on the bike and get the review out by Monday or Tuesday of next week.
I believe the purge line (pulse tap) you're talking about thats on the carb, is setup to where you connect it to the reed kit, as opposed to connecting it back to the fuel tank. I think that's what youre talking about. Correct me if I'm wrong.
Quote:
Originally Posted by hackmunch
start out with low at 1 turn out this will start the bike easy because it will be alittle lean! once it is started turn the low speed out a little to bring the idle down! once you get to idle then adj high out about 1 1/2 turns take it for a spin and see what it does at wot if it surges it to lean and adjust high out farther until it runs like a raped ape at wot with out any surge! if you midrange is not good you might have to mess with low adj a little but use 1/8 turns on low as the bikes idle is affected by the low adj you might have to run low rich and will have to raise idle to keep the bike idleing! hope this helps snow! make sure you have the purge line hooked up also!
Funny, I just received the SHA 16/16 for xmas. Only bad thing is, you can't run the 16/16 with the PSWS reed kit. Its designed specifically for walbro carbs.
I'll try to tune the carb with the reed kit asap. Too much rain outside right now. And its supposed to rain thru the week...whatever happened to good ol' cali sun?
Quote:
Originally Posted by blah
Ah, i was trying to hunt down the numbers for their reed kit that i didn't even get a chance to answer this. Well, when they say "1 turn out" they mean screw the screw all the way in clockwise untill it bottoms, be gentle cause they can get damaged. Then unscrew it anti-clockwise 1 full turn.
The needles just meter the amount of fuel that is mixed with air, so the more you unscrew them the richer the mix is, simple huh. Too lean and it bogs when accelerating, idles uneven and falls off the revs up top or even melts holes in pistons. Too rich and it doesnt like to idle smoothly, accelerates great but doesn't rev out. After a couple of goes you get the hang of it.
The thing with walbro carbs that most people dont realise is the pumping frequency of the engine, ie the crankcase pressure changes can have an effect on how fuel is metered. It is adjustable but very tricky, so it can be important to have the carbs pump tuned into the engine as well as having the right bore and mixture settings right. I wonder how the PSWS reeds would work with a SHA 16/16?
Funny, I just received the SHA 16/16 for xmas. Only bad thing is, you can't run the 16/16 with the PSWS reed kit. Its designed specifically for walbro carbs.
I'll try to tune the carb with the reed kit asap. Too much rain outside right now. And its supposed to rain thru the week...whatever happened to good ol' cali sun?
Ahh, i see the walbro just bolts to the reed cage, i imagine you could make one fit, but yeah.
yes the pulse line runs from the fuel pump (in the carb) in to the reed box(crankcase)! the pulses from the crankcase run the fuel pump! this idea works kick as$ because the pulse from the crankcase is much stronger than using the small hole in other companys manifolds! good luck snow ANYONE SEE THE NEW CHINESE ADJ CLUTCH FOR THE CAG LOOKS SWEET FOR 60$ AND THE GUY HAS THEM INSTOCK!!
a way you could probably fit it is to use the Blata intake manifold and use extra long bolt to run through the Blata manifold down to where the reed manifold attatched to the case. that might work for you!
so the outlet off the primer bulb needs to be hooked to engine vaccum ?
then again my 603 might be diffrent ....
to get mine right i have the idle speed (not mix) set a little high , cured the off idle bog death ......but that may mean im not running on the low jet just right yet ......
anyone else have the throttle travel reduced by a bunch ?
well see once the bbk and fcc arrive and i get it back togther with the ada reed kit (bought because of snowbaords review)....sucks ive had to look at the reed kit for a week now waiting for the other stuff to get here....need to find a way to get that primer bulb outlet to engine vaccum now(if thats what everyones doing).....
The xr50 carb I had for awhile on my cag had the same bolt spacing as a walbro, I used the ADA billet manifold to mount it up. I used alittle JB Weld to fill the pulse hole on the manifold.
Only bad thing is, you can't run the 16/16 with the PSWS reed kit. Its designed specifically for walbro carbs.
