T500 something

Sure do,
The top of the exhaust port is currently at 37.5 mm from the top of the cylinders
The width of the exhaust port is 44mm form point to point, the arc length is ~48mm

The bottom of the intake port is 104mm from the top of the cylinders
They are the standard width 44mm?
 
Farmer, I don't know who made my chambers. Teazer used the dimensions and then matched the porting to them. I haven't had the dough to get new pistons and boring and then button it all up. Will let you know when it is done.

Brian
 
farmer92 said:
Sure do,
The top of the exhaust port is currently at 37.5 mm from the top of the cylinders
The width of the exhaust port is 44mm form point to point, the arc length is ~48mm

The bottom of the intake port is 104mm from the top of the cylinders
They are the standard width 44mm?
Click to expand...

What about the transfers? And what year are the cylinders from (as best you know)?
 
How far down are the tops and how wide?
I would not lower those intakes, but the exhaust ports could be raised by 2mm as long as there is enough metal to allow that. I would widen the exhausts by 2mm from where they are now but make sure to chamfer port edges and curve the top and sides to make it easier on the rings.
 
That's OK. They sound like they have not been fooled with. Leave them alone for now.
 
jimmer said:
farmer92:aren't those engines crazy azz heavy?!! I think the crank alone is about 40lbs!
Click to expand...

You should try lifting an xs 650 engine, those things are really heavy!!! I scrapped my 650 project just because of the weight of that engine!
 
I will be following your build, sounds like you have lots of engine parts to work with!
 
johnu said:
You should try lifting an xs 650 engine, those things are really heavy!!! I scrapped my 650 project just because of the weight of that engine!
Click to expand...

Really? They don't really look that bad, although this one didn't either until i pulled it out. It was a lot closer to the 84 gs750e I pulled out with my brother than I expected.

How's that sick bike of your's running these days?
I read through your build thread like 5 times, amazing work.

Yeah, two mostly complete bikes, the silly thing is i'm almost debating going back to pick up another gt500 engine and mostly complete gt500, at $300 CAN i figure i can't lose to much, especially if they both have the oil pumps and case lines haha
 
I am debating upgrading the ignition/charging system to one made by powerdynamo.
300euro delivered is not cheap by any means, but I plan on keeping and riding the bike for a while and was wondering what people though of the stock charging system. I have read that at best it is adequate, but i would like to upgrade the lighting as i have no interest in riding blind at night.

If anyone has used a powerdynamo unit i would be interested in your thoughts on it.
 
I'm following this here is a Titan I restored and I'm in the middle of another
 

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Imagine my reaction when i learned the fellow who sold me the parts bike has this in his garage

http://classicmotorcycles.about.com/od/designersandentrepreneurs/fl/Honda-CB400F-to-CB800-V8.htm

Other then that, crank oil seals and o rings off being changed,
Cleaned the outside of the cases with a wire brush, pressure wash again to get the last little bit off
Widened the exhaust ports as teazer suggested. Gotta keep on keepin' on
 
Build time has been down over the summer, busy with work, down but not out.

The crank was rebuilt
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The condensers were connected with crusty-ass electrical tape? Connections were soldered and shrink wrapped.
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Engine was closed up with ported cylinders,
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Actually managed to clean all the oily gunk on and out of the oil lines, pump, bolts, etc. With no catastrophic accidents. Check valves operate as they should, which was a relief.
I will have to remove the engine side bolts however to shoot some oil down to the bearings so they are well lube for the first fire. Thats probably a ways off however.

Was going to buy some expansion chambers, but i can't really justify dropping close to 1k on a set, at least not without taking a few cracks at it myself. I grabbed some left over 20ga fired up the ol' Thunderbolt xl and had at it. (Look ma i made a funnel)
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It is definitely not a pretty bead, but it should do the trick. So long as i can get the fit up spot on i can get it done without burning through, but the margin for error is slim. I may end up using some 18ga stainless for the final set of pipes. However the initial pipes will be made from regular steel, cause its cheaper practice.
 
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Tested out the cone layout program, plotted out the patterns, cut, roll, uncut, trace, cut, roll, grind, weld, meh...
 
Fellow local to me, he has a shop that restores vintage snowmobiles, dropped it off on a Saturday morning and by monday afternoon it was ready, seals changed, trued and balanced.
 
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