1962siia
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- Oct 13, 2013
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Nice you win coolest cx for sure!
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CX650 Eurosport engine rebuild with performance mods.
- Thread starter Tim-That CX Guy
- Start date
jetboy
eikooR
now you need to organize a vintage ride so we can all come see it.
Tim-That CX Guy
Resident Window Licker
She came home today.
Now I have to arrange a dyno break in and get the exhaust gas and rear wheel horsepower report.
(And take her out of non-op)
The engine looks so pretty that I'm going to have to get the restoration paint and graphics done too.
Now I have to arrange a dyno break in and get the exhaust gas and rear wheel horsepower report.
(And take her out of non-op)
The engine looks so pretty that I'm going to have to get the restoration paint and graphics done too.
Attachments
Tim-That CX Guy
Resident Window Licker
Probably Mammoth.
Damon ran our Dizzers with good results.
Damon ran our Dizzers with good results.
Tim-That CX Guy
Resident Window Licker
Dyno Charts:
Second to last run.
Stock low jet, 78 primary / 122 secondary jets. Over rich top, lean bottom, perfect jet needles.
Second to last run.
Stock low jet, 78 primary / 122 secondary jets. Over rich top, lean bottom, perfect jet needles.
Tim-That CX Guy
Resident Window Licker
Last dyno run:
Up one larger low jet, 78 primary, 115 secondary.
Top end is perfect.
Recommendation from the shop, is to go to up one, maybe two on the low jet, and 80 (maybe 82 primary).
After I get that done, he'll do a couple more pulls just to make sure.
Incidentally, according to the Honda specifications, the CX650 has 64 horsepower at the crank.
I haven't seen any dyno results with a bone stock CX650E before, but assuming 20% loss due to the shaft drive, theoretically, a stock CX650 would have 51.2 horsepower to the rear wheel.
The top pull we saw was around 56.2 to the rear wheel.
Up one larger low jet, 78 primary, 115 secondary.
Top end is perfect.
Recommendation from the shop, is to go to up one, maybe two on the low jet, and 80 (maybe 82 primary).
After I get that done, he'll do a couple more pulls just to make sure.
Incidentally, according to the Honda specifications, the CX650 has 64 horsepower at the crank.
I haven't seen any dyno results with a bone stock CX650E before, but assuming 20% loss due to the shaft drive, theoretically, a stock CX650 would have 51.2 horsepower to the rear wheel.
The top pull we saw was around 56.2 to the rear wheel.
Last edited:
Tim-That CX Guy
Resident Window Licker
It's never easy, or "now what..."
So after the dyno runs, we found an oil leak.
Based on the drip lines, I thought that the clutch and transmission gaskets had issues. NOPE.
Larry figured the cam holder/ tach drive gasket. NOPE.
The cam holder/tach drive has an aluminum plug that leaked.
So after the dyno runs, we found an oil leak.
Based on the drip lines, I thought that the clutch and transmission gaskets had issues. NOPE.
Larry figured the cam holder/ tach drive gasket. NOPE.
The cam holder/tach drive has an aluminum plug that leaked.
Attachments
Tim-That CX Guy
Resident Window Licker
Tim-That CX Guy
Resident Window Licker
No, we have one...
One unavailable tach drive seal wasted on the leaky holder.
Fortunately, Larry and I both squirrel spares, so it's been fixed.
The rejet is finished, and as of today, no leaks, and the bike pulls across the entire power band, from clutch release through to 10k rpm.
Spark plugs tell the tale.
She'll be coming home (again) this weekend.
One unavailable tach drive seal wasted on the leaky holder.
Fortunately, Larry and I both squirrel spares, so it's been fixed.
The rejet is finished, and as of today, no leaks, and the bike pulls across the entire power band, from clutch release through to 10k rpm.
Spark plugs tell the tale.
She'll be coming home (again) this weekend.
Attachments
Tim-That CX Guy
Resident Window Licker
One step forward, two steps back.
Years ago, the original 18" rear rim cracked at the left side bearing hub, so I replaced it with a 17" cx turbo rim.
I pulled the rim out of my spare Euro and had a new tire installed today.
When it was spinning on the balancer, I noticed that the rim had run out and a flat spot.
So, after I get her back home tomorrow, the tire has to come back off, the rim repaired, and tire back on.
FFFFFUUUUUUUU!!!!!!!!
Years ago, the original 18" rear rim cracked at the left side bearing hub, so I replaced it with a 17" cx turbo rim.
I pulled the rim out of my spare Euro and had a new tire installed today.
When it was spinning on the balancer, I noticed that the rim had run out and a flat spot.
So, after I get her back home tomorrow, the tire has to come back off, the rim repaired, and tire back on.
FFFFFUUUUUUUU!!!!!!!!
Tim-That CX Guy
Resident Window Licker
So, the bike that keeps on giving, kept on giving.
As some may have read in the garage thread, after I removed the wheel, I found a spun bearing.
After some very detailed research, I degreased the hub, cleaned the holy hell out of the mating surface, then used Loc-tite 7649 primer on the hub and bearing, followed by Loc-tite 660 both on the inside of the hub surface, and a very small bead on the new All Balls bearing.
Surprisingly, I had to use a driver to install the bearing. So far, so good.
After letting the Loc-tite cure for several days, I sent the wheel to GP Frame and Wheel.
It arrived there Friday Morning, and I got it back yesterday.
Gerry said that the Comstar was not the easiest wheel to work on, but he managed to get the rim within spec.
Tire is going on today, and the bike should be back on the road on Saturday.
As some may have read in the garage thread, after I removed the wheel, I found a spun bearing.
After some very detailed research, I degreased the hub, cleaned the holy hell out of the mating surface, then used Loc-tite 7649 primer on the hub and bearing, followed by Loc-tite 660 both on the inside of the hub surface, and a very small bead on the new All Balls bearing.
Surprisingly, I had to use a driver to install the bearing. So far, so good.
After letting the Loc-tite cure for several days, I sent the wheel to GP Frame and Wheel.
It arrived there Friday Morning, and I got it back yesterday.
Gerry said that the Comstar was not the easiest wheel to work on, but he managed to get the rim within spec.
Tire is going on today, and the bike should be back on the road on Saturday.
