|
|
Post by kawonda750 on Jun 21, 2023 7:41:19 GMT -5
Float heights are 25 mm.
And, I checked this morning, the choke slides have the rubber on the bottom and a couple mm free slack on the cables. I remember that Ned had a choke without the rubber bottom once causing trouble .
Also, with the carbs apart yesterday, I removed the air screws and put carb cleaner in both the air screw seat and intake holes and blew them out with the compressor.
We'll see what happens later when it is back together.
What iridium plug works ? I may go that way next....
|
|
|
|
Post by mraxl on Jun 21, 2023 9:45:51 GMT -5
What iridium plug works ? I may go that way next.... Supplier: NGK Brand: IRIDIUM IX SPARK PLUG Part Number: BR9HIX Part Type: Spark Plug Comment: H1-B; MAG; Gap 0.028 |
|
|
|
Post by kawonda750 on Jun 21, 2023 10:07:19 GMT -5
Thanks Dale.
|
|
|
|
Post by kawonda750 on Jun 21, 2023 17:06:42 GMT -5
So, 27.5 pilots did not work well. Hard to satrt and won't idle.
The B uses 2.0 slide cut aways and this is fouling plugs quickly at idle.. I have a set of 3.0 slides from an early H1 that I was thinking of trying and putting the 30 pilots back in. There are a few carb spec differences between the early H1s and the B but with the timing advanced at 25 BTDC, will these work? With the B needles and needle jets I could richen with needle clip position to make up for differences..
I have never had so much trouble getting a triple to run right. Am I barking up the wrong tree?? Just about at the end of my rope with this bike.
|
|
|
|
Post by norm on Jun 21, 2023 20:02:26 GMT -5
Float heights are 25 mm. And, I checked this morning, the choke slides have the rubber on the bottom and a couple mm free slack on the cables. I remember that Ned had a choke without the rubber bottom once causing trouble . Also, with the carbs apart yesterday, I removed the air screws and put carb cleaner in both the air screw seat and intake holes and blew them out with the compressor. We'll see what happens later when it is back together. What iridium plug works ? I may go that way next.... The choke plungers may still not be sealing well. I got some new ones for the H2. Niche cycle has new genuine plungers you could try. www.nichecycle.com/ncs/mikuni/parts-by-category/choke-assemblies-plungers/vm15sc4-85-plunger-starter-cable-kit-by-mikuni.html |
|
|
|
Post by mraxl on Jun 21, 2023 20:09:03 GMT -5
Timing has nothing to do with carb size. Set B timing to 24-25deg. Put in Yamalube 2S semi syn oil. Go back to #30 pilot. Try iridium plugs if the oil doesn't solve problem.
|
|
|
|
Post by lc on Jun 21, 2023 23:52:52 GMT -5
How did you set your 25mm float level?
The way I always set mine is with the carbs completely inverted.
If you use the "carb on side" method the actual fuel level will be allot higher in the bowls and run too rich.
Jim Shreve (Darth) once tested the inverted carb float setting method.
He found the inverted FLOAT setting method results in or very close to the Kaw specified FUEL level in the bowls.
J
|
|
|
|
Post by lc on Jun 22, 2023 2:18:06 GMT -5
|
|
|
|
Post by kawonda750 on Jun 22, 2023 5:42:26 GMT -5
I fully invert and measure with a vernier.
|
|
|
|
Post by kawonda750 on Jun 22, 2023 6:26:14 GMT -5
Timing has nothing to do with carb size. Set B timing to 24-25deg. Put in Yamalube 2T semi syn oil. Go back to #30 pilot. Try iridium plugs if the oil doesn't solve problem.
I mention timing and, I may be wrong in my thinking but, I am increasing performance back to early H1 spec and assume that carb size should be similar, |
|
|
|
Post by Walms on Jun 22, 2023 6:46:08 GMT -5
My guess at this point if it is a carb issue is float height issue or a poor float valve. You've pretty much proven that it isn't jetting, but enough fuel is still getting through to foul plugs.
One last check that I would try is to confirm the float levels by holding the carb upright with a piece of hose connected to the fuel inlet. Blow on that hose to confirm the closing point and at the same time confirming the seal works. The other check would be to confirm all floats float the same.
If those checks pass, what's next, a weak spark???
|
|
|
|
Post by pipe welder on Jun 22, 2023 7:25:30 GMT -5
Timing has nothing to do with carb size. Set B timing to 24-25deg. Put in Yamalube 2T semi syn oil. Go back to #30 pilot. Try iridium plugs if the oil doesn't solve problem.
Agree, It could be your oil Dave. I have used Yamalube 2S for many years and never have any fouling issues. 2T & 2R are High Performance full synthetic oils and 2S is listed as General Purpose semi synthetic. They tell me the 2S is recommended for oil injected engines. I never had any issues with 2S so I never tried the 2R. If you switch oil keep in mind that I bought my h2 not knowing what oil was in the tank. Some time later I had a goop in the bottom of the tank that blocked the oil flow. Some people suspected it was a reaction caused by mixing two different products. So dump the old oil if you switch. The plugs in my H2 have been in there for 10 -15 years |
|
|
|
Post by kawonda750 on Jun 22, 2023 9:56:51 GMT -5
I replaced the pilots with 30s . For fun, I changed the floats in the centre and right carb because they were fouling much more. It seems to run fine now. I had gone back to stock 95 mains and specified B clip position before but never got the chance to try it out. Bike runs and accelerates nicely now. Hopefully this is it. I am going to Midland to get iridium plugs for good measure.
|
|
|
|
Post by kawonda750 on Jun 22, 2023 13:40:29 GMT -5
Is the 2S ok for new top end?
|
|
|
|
Post by pipe welder on Jun 22, 2023 14:09:08 GMT -5
Is the 2S ok for new top end? That’s what I used even after I did the top end. |
|
