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Old 05-01-2011, 10:21 AM   #781
ErricZ
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thanks ... and with such a beautiful weekend too. It's ok, I needed to do some yard work for the wifey anyways, better points. :)

I pulled the plug and it's fine, soooooooo, I'm hating my next steps.
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Old 05-02-2011, 06:00 AM   #782
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Originally Posted by ErricZ View Post
thanks ... and with such a beautiful weekend too. It's ok, I needed to do some yard work for the wifey anyways, better points. :)

I pulled the plug and it's fine, soooooooo, I'm hating my next steps.
i hate i when that happens
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Old 05-03-2011, 10:58 AM   #783
ErricZ
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looks like I just plain overheated her as the piston and bore are scored up good. F F F F F F F F F F F F FF F F F F, looks like another $500 to Powerseal for another replate, piston and rings. weeeeee.

wtf did I do wrong? (where to start is more like it ...)
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Old 05-03-2011, 12:50 PM   #784
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too lean maybe? air leak between the carb and cylinder

kinda like this only not as severe






.
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Old 05-03-2011, 01:00 PM   #785
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^^^^^ overheated??? it was only like 55-65 degrees out wasn't it?

you mention a scored up piston and cylinder... did the ring jump? did the pin slide or its clips fail? how about the plating? did the re-plating fail and start chipping near the ports?

Is there still coolant in the rads? in the overflow, or boiled all out?
If the bike was just rebuilt (by a pro) I'd start asking them some questions

I've overheated many bike without any major failure

I wish you luck
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Old 05-03-2011, 01:21 PM   #786
ErricZ
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Well ... SOMEthing overheated :), it was warm the day I took it out and running around 55 it was fine all day long the week before. It wasn't until I ripped it faster that things went awry. Powerseal guys said it sounded like it leaned out at the top end too ... he seemed to want to blame the ethanol fuel and maybe my overmixing of crappy oil contributing to the leanness. I have a JD Kit and maybe I'll have to go back to the 180 main.

I had plenty of coolant though it did look like my head gasket could have been split a little as it was wet, but it could have been from trying to take it apart and nothing else. I ended up running 2 gaskets to get the clearance on the piston-to-deck correct, so I don't think that was it.

The ring is still in the correct place as it's fused in place from the sides. lol yeah, fun times as usual.

(If you can't tell, I was the "pro". :) I just haven't done much work on Hi-Perf 2-smokes. Live, pay, and learn!)
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Old 05-03-2011, 01:23 PM   #787
ErricZ
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Quote:
Originally Posted by 93-610 View Post
too lean maybe? air leak between the carb and cylinder

kinda like this only not as severe






.
Ouch! That is one booted boot. I know mine has surface cracks but it seemed to have it's full integrity throughout, I will recheck of course.
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2002 BMW R1150GS - Graphitan, PB riding
2000 Aprilia Pegaso - Blue, for the trails!!
02 Pagsta Choppa, 85 & 86 GSX-R 750 (projects)
2005 Ford F-250 Super Duty XLT 4x4, do-it-all Pine Barrens Beastie
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Old 05-03-2011, 02:10 PM   #788
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2005 Ford F-250 Super Duty XLT 4x4, do-it-all Pine Barrens Beastie
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Old 05-03-2011, 09:35 PM   #789
Kevinhooa
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Damn dude. Not looking good. Is that your only scoot? (Nevermind. Saw your sig)

A couple other things to look at for that lean mixture thing... check your airbox for melted holes from exhaust or cracks from rocks. Also maybe check your head pipe gasket if you've recently had that off. Maybe it's possible your coolant was steaming through your head gasket and burning off in the fuel mixture in the cylinder? Was the leaky part of your gasket near the scoring on the cylinder? What was your coolant level, I don't think I saw that.

I know right now it could be a number of things, just trying to throw some ideas out there.

I checked some sat photos for this bridge and canoe place. I noticed a key feature on this bridge that it has steel guard rails and not the wooden creosote ones that most of the pine barren bridges have. You also don't see many full fences on the sides of creeks like that either. I've been ruling bridges out 1 by one. lol
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Old 05-04-2011, 06:19 AM   #790
ErricZ
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Nah, I have a street BMW that I take on fire roads (which is probably going to get some Avon Distanzia's now) and a couple projects in the works. My coolant level was good (well, measured not poured) but I will check gaskets and my airbox too.

I just finished reading something interesting:
Quote:
"We posed this question to Keith and Louie at Polini USA, when they came up to the shop for my broken arms party. I took them over to the hall of shame, and showed them our collection of Puch Polini Pistons. After looking at them for a minute, Louie knew right away what was going on. “Are people mostly running synthetic“? Yes I say. “Your running too much oil”. He went on to explain that KTM was having a very similar problem with their KTM 80′s seizing. They did a very long and expensive study, and found it was all in the oil.

Synthetic oil burns at much higher temperature than gasoline, and as you start mashing away you begin building up heat. The heat gets so extreme that it starts to make the ring expand. At the same time the piston starts to warp a little, and bam! It catches on the exhaust port. The solution? Run a 60:1 mixture when you are running full Synthetic oil. It brings just slightly less hot burning oil into the equation, and while it sounds counter intuitive, it solved KTM’s problems.

Is this the answer? It sounds good. There have been many explanations for this type of seizure, but this one seems the most probable. Elliott is going to start running 60:1 in his Puch to see what happens. If anyone has any experience on this, please post up."
source: https://www.1977mopeds.com/blog/2009...polinis-seize/
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2002 BMW R1150GS - Graphitan, PB riding
2000 Aprilia Pegaso - Blue, for the trails!!
02 Pagsta Choppa, 85 & 86 GSX-R 750 (projects)
2005 Ford F-250 Super Duty XLT 4x4, do-it-all Pine Barrens Beastie

ErricZ screwed with this post 05-04-2011 at 07:59 AM
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Old 05-04-2011, 09:16 AM   #791
Kevinhooa
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Wow. That is very interesting. Looks like you might have to make that street beemer a dual sport for now!
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Old 05-04-2011, 10:28 AM   #792
ErricZ
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Wow. That is very interesting. Looks like you might have to make that street beemer a dual sport for now!
AVON AM43 120/70HR17 SM DISTANZIA FRT 305387 $112.95
AVON AM44 160/60HR17 SM DISTANZIA RR 305399 $158.95

Best price for a pair comes from SWMotoTires.com as usual!


I already take her out there but I'll feel much more confident with this rubber.

This will run me about 1/2 the cost of the head rebuild ($402 last year, more with fuel surcharges this year) so when I get some more cash next month, PowerSeal USA will be seeing the head. Again. Which Kris really appreciated.
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2002 BMW R1150GS - Graphitan, PB riding
2000 Aprilia Pegaso - Blue, for the trails!!
02 Pagsta Choppa, 85 & 86 GSX-R 750 (projects)
2005 Ford F-250 Super Duty XLT 4x4, do-it-all Pine Barrens Beastie

ErricZ screwed with this post 05-04-2011 at 01:38 PM
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Old 05-04-2011, 07:30 PM   #793
Kevinhooa
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Ok. I looked up all the addresses of canoe rentals near the pines, and then checked what the lots looked like from Sat photos. I also looked up recent bridge replacement projects near the pines, as the bridge in the shot looks fairly newer. I followed some of the rivers I have yet to paddle down and didn't notice the one in the shot. It looks like you might be facing (if that is a before noon shot) a SE/S/SW direction with the creek running roughly SE which would make the road roughly E-W. Just an educated guess though.

Sooooo, I might need a hint Vtwinp!
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Old 05-04-2011, 07:43 PM   #794
vtwinp
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more clues

Kevinhooa, Or anyone-It is not a river, look close at the color of the water, you may see a volleyball game at this location on a hot day. The sign at the bridge says "no jumping" all of that is only a hint.

The tag shot is the canoe rental
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Old 05-05-2011, 07:42 AM   #795
Kevinhooa
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Haha, ok a technicality. River, creek, branch, feeders, it's all look the same pretty much until you get to tide water which it doesn't look like that bridge is near. I'll keep air hunting, as that doesn't cost $4 a gallon!
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