Mikuni carb swap

[disonny]

Hi All, My 76 wr360 has a gurtner carb on it. It runs ok but i want to put a mikuni on it. I've heard it makes a big difference in the way it runs. Is it worth the swap?

 

[ruwfo]

Never hear anyone complain about any Husky they converted to a Mikuni..go for it..

Husky John

 

[justintendo]

way different application but i just swapped my friends 67 honda cl450 from dual keihin cv carbs to pair of twin mikuni roundslides. really easy to jet and the bike sounds and runs like never before. i know that there are better carbs out now but the mikuni roundslide has got to be the all time classic carb. ive only owned huskys that already had them tho.

 

[Ron]

Never heard of anyone swapping a Mikuni for a Gurtner.

 

[Mick K]

1976 360WR like OP. Sorry for the Hijack. My Mikuni runs great up to about 1/2 throttle, starts good, idles good, crisp and fun to ride. Past 1/2 throttle she starts breaking up (like bumping against rev limiter) where should I look?

DP1/Q8 bottom clip
430 main
45 pilot

 

[disonny]

Mick, I would check the plug and see what color it is. 430 main seems a bit big, but I'm not a jetting guru.
I ordered the parts to swap to a mikuni. I think it will be a good move.

 

[justintendo]

let us know how it goes...i dont think youll be disappointed, plus much easier to find jets etc..

 

[ruwfo]

1976 360WR like OP. Sorry for the Hijack. My Mikuni runs great up to about 1/2 throttle, starts good, idles good, crisp and fun to ride. Past 1/2 throttle she starts breaking up (like bumping against rev limiter) where should I look?

DP1/Q8 bottom clip
430 main
45 pilot

It's likely your Main jet too bike, i'm a sea level & i'm running a 380 in my 250 & around that on my 430 & 500, with about the same pilot, alot
depends on your slide though,what it's in there? 2.0

Husky John

 

[Mick K]

Slide was 2.5 dremmeled out to approx 3.0. Could it be needle and needle jet? I'm about 700 above sea level. Also I've tried a 410 and didnt seem to make any difference.

 

[ruwfo]

Slide was 2.5 dremmeled out to approx 3.0. Could it be needle and needle jet? I'm about 700 above sea level. Also I've tried a 410 and didnt seem to make any difference.

That slide makes it leaner, so i'd go to a 450 or 480 main, with a 410 your going in the wrong direction , so that's why you didn't
see much difference

Here's a good article on carbs
http://www.ducatimeccanica.com/dellorto_guide/dellorto_3_6.html

Husky John

 

[fran...k.]

Slide was 2.5 dremmeled out to approx 3.0. Could it be needle and needle jet? I'm about 700 above sea level. Also I've tried a 410 and didnt seem to make any difference.

Probably needle and jet. If I recall I had a round slide on a bike with that engine but it was decked so not stock. I put the carb from my 430 auto on it. Those Q needle jets seem to come in the 250 and again if I recall the needle is shorter. I never used anything but an r-2 though have bought an r-0 as the specs show it somewhere. Picture for 1986 ae430.

Does it get worse if you lower the needle? Bottom clip means high needle the way I understand the text.

Fran

 

[highdez1981430cr]

Never heard of anyone swapping a Mikuni for a Gurtner.

Hello Ron, the chain guides that you fabbed up for sale.What is the largest rear sprocket that it will clear?

 

[Ron]

Hello Ron, the chain guides that you fabbed up for sale.What is the largest rear sprocket that it will clear?

They have slots for adjustment, but they were designed around a 53T sprocket. I have never tried anything larger though.

 

[highdez1981430cr]

They have slots for adjustment, but they were designed around a 53T sprocket. I have never tried anything larger though.

Do you still have ones for sale?

 

[Ron]

http://www.ebay.com/itm/Vintage-Hus...Parts_Accessories&hash=item4ab4aceed9&vxp=mtr

 

[Mick K]

I ended up moving the clip to the second from the top position and now she rips all the way through the rpm range thanks for all the suggestions.