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Old 09-07-2013, 11:27 PM   #8896
crobox
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Quote:
Originally Posted by Dread_lion View Post
for those of you looking for the twin headlights from the XL600lm, here's a complete one on ebay italy!
http://www.ebay.it/itm/doppio-faro-d...item43bf591bcb

Wow... Rare find!

A year ago, I would have bought that in a heartbeat. Someone should snap that up!
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Previous Bikes: 1986 Honda XL600R,Honda XL250R (2 of them), Honda XL600R, Kawasaki KLR600, Honda Nighthawk, BMW K1100LT, BMW R100GS, BMW R60/6, BMW K75, Husqvarna 430XC
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Old 09-08-2013, 01:32 AM   #8897
Dread_lion
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Hey homerb, yes my rmg engine is in need of a lot of work. Right now i have a normal xl engine in there to be able to ride till winter. However I want to fix my original engine as soon as possible. I found the bronze rings that go next to the conrod in pieces in the oil filter! So I'm looking at eiher a new complete assembly, or getting a new rod pressed in. Havent dissambled yet, but I'm looking around for options, as I know rmg pieces are sometimes harder to find.
Thanks for that link on ebay uk, missed that one.
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Old 09-08-2013, 03:36 AM   #8898
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Any XR600 conrod kit will work to rebuild your crank. I used a Pro X kit from powersportsplus in USA. Any competant workshop can fit it. Better than buying a used crank, and not knowing for sure how good it is.
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Old 09-08-2013, 04:35 AM   #8899
mcma111
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ElMartillo,

I'd bet you seized the piston or dropped a valve seat.

Got oil??
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Old 09-08-2013, 07:27 AM   #8900
Dread_lion
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Thanks homerb! Wil look into that! I thought buying an entire one would be cheaper, but your absolutely right about not knowing the condition of used parts! Will start dissasembly soon, to see how bad the rest is!
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Old 09-08-2013, 08:09 AM   #8901
mcma111
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Quote:
Originally Posted by Dread_lion View Post
Hey homerb, yes my rmg engine is in need of a lot of work. Right now i have a normal xl engine in there to be able to ride till winter. However I want to fix my original engine as soon as possible. I found the bronze rings that go next to the conrod in pieces in the oil filter! So I'm looking at eiher a new complete assembly, or getting a new rod pressed in. Havent dissambled yet, but I'm looking around for options, as I know rmg pieces are sometimes harder to find.
Thanks for that link on ebay uk, missed that one.


The last motor that I worked on that blew a rod big bearing the thrust washers turned to dust and was EVERYWHERE throughout the engine. I had to disassemble and wash with solvent and a tooth brush the entire engine, transmission shafts and gears, just everything. You will even have to flush out the frame and the oil lines.
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BMW's
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 09-08-2013, 09:04 AM   #8902
RFVC600R
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Where can I get one of those giant syringes to prime the engine??
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Old 09-08-2013, 09:14 AM   #8903
Dread_lion
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i kind of knew that ;) i had already cleaned the oil lines and it wasnt pretty! this is what i found at the bottom of the oil filter in the engine:
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Old 09-08-2013, 09:35 AM   #8904
mcma111
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It looks like your's failed in chunks and bits. The engine I worked on appeared to keep running as the thrust washers wore away to dust. You might have an easier task of cleaning it all up.

This is that engine, two thousand dollars later:



I bought it back for a song.
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BMW's
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 09-08-2013, 10:00 AM   #8905
joexr
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Quote:
Originally Posted by RFVC600R View Post
Where can I get one of those giant syringes to prime the engine??
Buy one of those hand vacuum pump brake bleeders. They pump also. I think they're less than $50. Check around. Auto parts stores should have them.
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Old 09-08-2013, 01:52 PM   #8906
Reposado1800
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Originally Posted by ElMartillo View Post
Howdy, I have an '83 XL600R with 41,000 miles on it. I have put the last 5000 miles on it myself. When I became the owner, the bike had been sitting for some time, not sure how long. After some work I got this awesome machine running well. A major component/expense to get it running was a new Ricky Stator. It's been running strong for the above mentioned 5000 miles, and I thought I was quite lucky in never having to have pulled and cleaned the carbs. I know how to start it, I have been able to start this bike on one or two kicks when cold or hot for the last 4500 miles.

Yesterday, while riding it on the freeway the bike lost power. I had to pull off the road, as it would not maintain a high RPM, and seemed to exhibit intermittent cylinder firing at low to mid RPM. When I got to a gas station the bike seemed to want to idle, though somewhat high. I blipped the throttle a few times and it seemed to be ok, so I got back on the freeway. Immediately the previous symptoms were evident, so I headed for the next exit. The bike ceased to run altogether while exiting the freeway, and I haven't been able to start it since. My initial impression was that it is an electrical/ignition problem.

I changed the spark plug. I have heard it fire while engaging the decompression lever and kicking it slowly to clear the cylinder, and occasionally it seems to want to fire for a few RPMs, only to die.

I have checked the resistance on most of the ignition components and they check out based on the values I have been able to find online. These components include the coil, pulse generator and stator. I have no manual. I have swapped the CDI and coil from my other XL that shows 6100 miles without any improvement. I get a consistent if not exactly robust-looking spark on a grounded sparkplug.

I find it hard to believe the dual carbs could have experienced some kind of clogging to cause this failure after 5000 miles of nearly flawless running. The symptoms really point toward an electrical issue, but I'm a bit flummoxed.

I'm thinking it could be a weak spark issue, any ideas what is the most likely culprit and how to correctly diagnose?

Am I incorrectly focusing on electrical and should I look to carbs? I will attempt to start with starting fluid tomorrow, figuring if I can get it to run on that then it may indicate a fuel delivery problem.

Thanks in advance for any helpful/constructive suggestions!
I second the valve seat coming loose opinion. Get the head rebuilt before the seats break and blow the engine.
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Old 09-08-2013, 08:05 PM   #8907
davek181
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Make sure you cover the basics before you tear it down. Valve seats usually make a little noise first, then compression goes away. Do a compression and/or a leakdown test first.

I would pop off the carb bowls and see if something might be in the main jets. If the bike sat for a long time it may be now washing out the corners of the tank.

Look for loose electrical connections from the stator through the CDI and coil too. Clean and inspect grounds too.

Make sure a mouse didn't build a nest in the air cleaner.

Was the plug wet? Damaged? black?


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Old 09-08-2013, 11:26 PM   #8908
lookfar
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Quote:
Originally Posted by RFVC600R View Post
Where can I get one of those giant syringes to prime the engine??
Is that to prime the oil pump?

I hooked everything up on my XR, removed the breather going to the frame from the top of the rocker cover, hooked up the duster gun from the air compressor to the breather hose, put a bit of pressure into the oil tank, and turned it over slowly with the kickstarter (I had removed the plug)

Didn't take very long at all until I had oil up to the camshaft.
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lookfar screwed with this post 09-08-2013 at 11:31 PM
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Old 09-09-2013, 08:17 AM   #8909
Dread_lion
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ok i just found out why my bike is leaking oil. Stupidest mistake EVER! Seems in converting my bike with a non electric start engine, i had no use for the speedo assembly in the head. Not thinking about it, i just left it open! Now that i think about it, it seems like a REALLY stupid idea, as dust could easily get in, thank god i dont do any offroad here! Anyway, it seems that oil can come out pretty easily that way too. Anybody got any bright idea's on how to plug that hole?something nice and easy?
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Old 09-09-2013, 08:25 AM   #8910
joexr
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Quote:
Originally Posted by Dread_lion View Post
ok i just found out why my bike is leaking oil. Stupidest mistake EVER! Seems in converting my bike with a non electric start engine, i had no use for the speedo assembly in the head. Not thinking about it, i just left it open! Now that i think about it, it seems like a REALLY stupid idea, as dust could easily get in, thank god i dont do any offroad here! Anyway, it seems that oil can come out pretty easily that way too. Anybody got any bright idea's on how to plug that hole?something nice and easy?
Clean the hole with carburetor cleaner and fill it with silicone.
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