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Reepicheep
| | Posted on Thursday, July 03, 2008 - 02:37 pm: | 
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Got some info from an import guru I know (moto-lab.com)...
The pump should be able to move 2.0 to 2.6 L / minute per k/w
So lets see... at half of redline, that bike is probably making 10 HP. Thats 14.9 to 19.4 liters in a minute (between 4 and 5 gallons).
At the time I was trying to pull fluid last night, it was from the top of a full 5 gallon paint bucket... which was probably only 4 inches below the height of the pump (maybe less). If the pump can't pull a 4" water column, I don't know how it could get water from the pump to the radiator (more then twice that distance).
But like I said, I think that test was flawed... the whole setup was getting very rube - goldberg before I was done. |
Reepicheep
| | Posted on Thursday, July 03, 2008 - 04:55 pm: |
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OK... a positive result.
Got the water pump isolated, and it easily moves 5 gallons a minute. So I can leave that buttoned up and move on. A good exercise, as it was missing the shim anyway and needed to be fixed.
So that pretty much narrows it down to a head gasket. A new one is already on the way, so that will be the next try. Thats a 23 year old head gasket, so there are worse things then replacing it. |
Bombardier
| | Posted on Friday, July 04, 2008 - 08:18 am: |
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Not really Reepicheep.
All it takes is someone to have filled the radiator with tap water just once and for the bike to sit for a while.
The core of the radiator will get a build up of calcium on it that will still let the water flow through it but will not dissipate the heat from the water effectively.
Time to tear down the radiator for a recore or sonic clean I think. |
New12r
| | Posted on Friday, July 04, 2008 - 08:26 am: |
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The core of the radiator will get a build up of calcium on it that will still let the water flow through it but will not dissipate the heat from the water effectively.
+1 Get the bike up to temp and touch (carefully, it may be really hot) the middle of the radiator, if it is cooler than the top and hoses you have a blockage. Or pull the radiator out and pour water in, it should come out just as fast but that test is a little hard to judge.
Also after filling the radiator run the bike with the Rad Cap off at operating temp for a couple min to help bleed out any trapped air. |
Reepicheep
| | Posted on Friday, July 04, 2008 - 11:06 am: |
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Thanks!
The radiators were off the parts bike, now that you mention it. They are pretty easy to inspect visually (they are small and simple) and look great, and they flow great, but it's easy to swap back to my originals.
I also found a fitting to the head that was missing a gasket, so I put that on last night. Seems like that would leak out though, not in, and it did not leak during my pressure test... but it was easy to fix.
That fitting also let me see and feel pretty far into the head coolant passages. It looked clean and clear.
And unfortunately, I was also going to seal the threads on my head temp sensor, and I ripped its head off (its soft brass). So I'll have to pull that out and replace it. I'm sure it's $40 from Kawasaki, but it looks like a fairly standard automotive part, I'll see if I can cross reference it.
I'm not normally a "throw parts at it" kind of guy, but having the spare parts in the garage already makes it pretty easy... and there comes a point where you have tested it all the ways it's easy to test, and you have to roll your dice and take your chances. |
Natexlh1000
| | Posted on Saturday, July 05, 2008 - 06:10 pm: |
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yep! I broke my old temp sensor trying to tighten it down.
tapered, you say?
oops. weak as hell as I remember. |
Oldog
| | Posted on Monday, July 07, 2008 - 01:09 pm: |
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Ok pump sounds good, no flow was either lift issue, as CJ indicates some pumps dont "lift well" and as you stated the water pump is at the bottom.
head gasket is re-used? any extra ash on the valves piston?
the cross section looks like that you could purge alot of the engine's air by pulling the temp sender.
are the barrel surfaces good too? |
Reepicheep
| | Posted on Monday, July 07, 2008 - 04:10 pm: |
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Yes, head gasket was reused, perhaps more then once. New top end gasket kit should be arriving soon.
That temp sender is a one shot deal, its a hollow brass shell, and goes in with some kind of interference / taper fit. It comes out in pieces... Maybe if I seal it with teflon tape and don't put it in so tight I can burp it from there...
I had drained and refilled the coolant "before" the "engine event" and it burped itself fine. |
Oldog
| | Posted on Tuesday, July 08, 2008 - 10:54 am: |
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so I got this straight,
pump ok
radiator ?
hoses ok
no t stat
air purges ok with out sender out at a high point
head / barrel gaskets ?? condition
it looks like gaskets it is by elimination,
unless the radiator is blocked
on the tape make sure that you have electrical continuity the majic tapered thread may be metric pipe thread as pipe threads are tapered. |
Oldog
| | Posted on Tuesday, July 08, 2008 - 10:58 am: |
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OH and BTW You got me thinking about a little dirt bike beater @#$%@$
The ride you described prior to "WHERES REEPI" sounds like the stuff of my boyhood
I hope you get the "lil kwaker" sorted soon.
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Reepicheep
| | Posted on Tuesday, July 08, 2008 - 11:16 pm: |
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Good point about the insulation... that sensor needs to conduct to ground.
Your other summary was right on as well. Seems like it just about has to be the head gasket at this point. No big deal, an entire top end gasket kit was $30, and at this point I can have that head completely off in less then 45 minutes.
I can even do the valve timing in my sleep... exhaust cam at 9 o-clock, intake cam at 3 o-clock, and 44 cam chain posts between the two dots.
I'd kinda like to get back in there and see if any more of those cam caps need heli-coiled anyway. 2 of the 6 pulled out in spite of carefully following the torque spec last time, I would not be suprised if others are about to go. |
Reepicheep
| | Posted on Wednesday, July 30, 2008 - 11:05 pm: |
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Pulled the oil pump tonight. It was (like everything else on this bike) chewed up.
The parts bike oil pump was in great shape, but it's screen on the pickup was packed with old RTV and chunks of aluminum, and had collapsed and torn under the pressure. Yikes! That engine chewed up a lot of *something*. The oil filter was full of aluminum as well...
So do you think this could cause my oil pressure problems? It was perfect cold, but half of what it should have been when the bike warmed up... |
Reepicheep
| | Posted on Saturday, August 23, 2008 - 05:54 pm: |
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Just did a thirty mile trip, riding it hard, with three heat cycles and NO overheating! Woo Hoo!
So it was the head gasket... I just screwed up the install, and used the wrong gasket.
Learned a lot though, so its all good.
(No hopefully it holds together...) |
Road_thing
| | Posted on Monday, August 25, 2008 - 06:59 pm: |
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Persistence pays off!
Have a beer on me...
rt |
Court
| | Posted on Monday, August 25, 2008 - 10:07 pm: |
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My gawd Tom . . Vick just raced in and said "There is a note from Tom on Badweb . . he has a BEAR on him"
Scared the hell outta me. |
Reepicheep
| | Posted on Monday, August 25, 2008 - 10:09 pm: |
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quote:Have a beer on me...
Err, does that mean drink one of Bombers?
And for the record, I was saving one of Jim Atteby's cigars for the special event It was good, he spends a lot more on cigars then I do... |
Court
| | Posted on Tuesday, August 26, 2008 - 06:23 am: |
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>>>rr, does that mean drink one of Bombers?
I'd take Bombers beer with great caution . . . . but, the upside is, you'll be safer snatching his beer from him than you would be his Scotch.
He and RT work as a team . . . . and cover each other's six.
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Road_thing
| | Posted on Tuesday, August 26, 2008 - 10:11 am: |
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I'm gonna have to post some pix of the recent "Brook and Bomber do Texas" tour...
Anybody know what the statute of limitations is in Texas?
rt |
Road_thing
| | Posted on Tuesday, August 26, 2008 - 10:42 am: |
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