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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by guylr on December 18, 2018, 03:12:42 PM »
Garn is correct, honing should result in a 22 degree from horizontal or 45 degree combined cross hatch pattern which is best done with a precision hone. That takes some practice to get right and too much angle can lead to oil consumption. However, if the original hone pattern is still present then a ball hone (aka Dingleberry hone) can be used as "glaze breaker" if the rings did not seat due to the cylinder wall being over lubricated. Those are pretty easy to use and work well as long as you use the correct size hone for the bore and don't over do it.

Guy
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by Garn on December 18, 2018, 07:54:02 AM »
If it's new rings going in, I would lightly hone the cylinder bores.
Look to see if the original 45 degree hone marks are there They usually make a herring bone-pattern..
You need to have the hone to "cut" the rings in, otherwise they may glaze.
You can buy a, what looks like an appropriate sized bottle brush, with small abrasive 12mm balls on the end of wire  stems that can be used as a cheap hone.
Have a mechanic look at it!  Shouldn't be any drama!
RegardZ.
PS, I think already covered... Ensure rings are mounted correctly on pistons ( ie numbers/ lettering up).
This could cause smoking.
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on December 15, 2018, 01:00:35 PM »
So I got a NOS cylinder and it has some light rust in the cylinder. (assuming its from age and sitting). What should I do? Scoth brite or light hone to get it out or do I just leave it? Any thoughts?
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General Discussion / Re: Alloy Rims
« Last post by guylr on December 12, 2018, 04:57:16 PM »
Production cost and profit margins. Every Yen you can take out of cost is one that may be added to profit and the Japanese are very careful with that to this day. The 500 was actually more expensive to build than the XS650. Both were premium large displacement motorcycles in the Japanese home market at the time when any bike over 400cc was rare and required a higher level license to operate. So buyers there expected the lighter rims. For our market the 500 was a mid sized bike and had to be sold for less than the 650 hence the cost saving on the alloys.

I've seen a JDM version at the Barber Vintage Festval and it looks really premium with the shouldered alloy rims.

There was actually a prototype 350cc version of the 500 that was SOHC but did not make it to production because of cost of the balancer system. Instead Yamaha came out with the XS360 in its place which was a much cheaper bike to make.

Guy
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General Discussion / Re: Alloy Rims
« Last post by ZackLis on December 12, 2018, 01:35:36 PM »
I always wondered why they do that kind of stuff for different markets. What's the logic behind that?
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Fuel System / Re: Pod friendly carb replacement for BS38s ?
« Last post by Green on December 11, 2018, 04:37:01 PM »
Hi. The carb you are looking for is the Dell Orto PHBE 34S. You need to ask for the larger fuel inlet strainer (8mm rather than 6mm) and the same jetting that was used for the single carb bought by Jules Crane. Ask for Robert at Eurocarbs as he was the bloke that did the back-checking for me to pull out the original paperwork for these Dell Orto carbs currently being used by the previous poster. If you intend using pod filters, use Ramair 55mm inlet, 117mm long (it's the "Tall" variant of this pod filter.)   
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on December 10, 2018, 01:57:18 PM »
No worries! Thank you for the input, im going through all my work again and going to make sure everything is perfect and go from there. Probably just something stupid I forgot! New cylinders should be in this week and ill be bale to finish it this weekend
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General Discussion / Re: Alloy Rims
« Last post by Garn on December 10, 2018, 05:14:06 AM »
Guyir, thanks for your answer.
Regardz
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by Garn on December 08, 2018, 05:54:08 AM »
Sorry I can't help you like you did for me!
I notice that on your compression check..... did you have the throttle fully open during test?
Easy to get muddled with points turning at 1/2 crank speed.
Remember 180 degrees of points rotor, after one piston is at TDC, the other will take 360degrees of points rotors

RegardZ
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on December 08, 2018, 12:26:02 AM »
I just got the engine out and will be re-doing all my work and ensuring everything is right this time. I even bought a NOS cylinder for the xs500e (engine I have) and will be installing that so I know it will be within spec just in case my mechanic measured wrong
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