05-14-2009, 08:04 PM | #16 | |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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Quote:
You'll get it Kato, You're a sharp knife
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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05-14-2009, 09:38 PM | #17 |
Join Date: Sep 2008
Location: Surrey, B.C., Canada
Posts: 2,185
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Haha... It was an interesting read for sure!
Reading all that about Mazda heads brought me back to my former life! They are bad for gasket etching into the block as well. Aluminum head and Iron block syndrome. You pull the gasket off and it looks like it's still there! Many people just replace the gasket and don't surface anything and the etching is so bad in the block it just puffs again.. however I don't think that is the issue here since it doesn't sound like a gasket issue. However with enough overheating the head will warp eventually and blow the gasket! |
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05-15-2009, 02:06 AM | #18 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Quote:
Old hot rodders (my Dad included) would often remove the thermostat to crutch the system, not realizing that often creates a problem. The thermostat is not only a valve, but also a restrictor. The key is in the size of the coolant passage that is exposed when the thermostat is fully open. Removing the thermostat completely causes the coolant to flow too quickly through the rad and return to the engine without sufficient contact time that any heat exchanger needs. If you insist on removing the thermostat, gut an old one to approximate a fully open thermostat. On the matter of the head, I agree that the head and block need to be properly prepped and squared before a new gasket can be installed. I'm glad to hear that you're not finding milkshake in the oil. Are you finding oil droplets in the coolant?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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05-15-2009, 09:45 AM | #19 |
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
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No oil in the coolant either. I think we have a combination of no thermostat and a failed fan clutch. Not real sure how to test the fan clutch. I believe it works on heat doesnt it?
The radiator looks good and clean. My Dad said it was fine until he had to stop and then it would get hot. Also the previous owner said that they machined the head when they did the gasket. I don't know if they did the block. Allen
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05-15-2009, 10:29 AM | #20 |
Join Date: Oct 2007
Location: SW Ontario
Posts: 408
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My rad, and fan looked fine too, but one spring day, as the weather warmed, it just started running hot. I went through the process of elimination, and ended up changing the rad.
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05-15-2009, 06:24 PM | #21 | |
Join Date: May 2007
Location: In the land of the busted up ricebowl
Posts: 815
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Quote:
You can get a solid (non-clutch) flex fan pretty cheap. As long as you don't try any deep water crossings they work fine. |
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05-15-2009, 09:17 PM | #22 |
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
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Yep. I can turn it pretty easy. It has some resistance, but not much. I tried heating alittle with a propane torch and it didn't seem to engage either. I don't know if that was a good test or not.
As for the radiator. I am going to price a new one. It won't hurt to make sure its good. I can be cheap in other areas. Since I don't need it for a daily driver, I can take my time to get parts. Here is some pics. I added some redneck chrome over the rust holes in the rain gutters. This is a FL coast truck. http://picasaweb.google.com/katoranger/Mazda#
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You meet the nicest people on a Honda Clone. |
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05-16-2009, 01:12 AM | #23 |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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Heck, It not in badshape, Interior seems pretty good. Could be a good getaround truck once You figure it out.
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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05-16-2009, 02:47 AM | #24 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Keep shopping for a factory style clutch fan. Marlan Davis of Hot Rod magazine says that they're the most efficient at cooling, and they don't rob as much horsepower when they're not engaged.
Failing that, I'd be tempted to switch to a junkyard electric fan and shroud. The Ford Taurus fans are popular with hot rodders because of the size and cfm rating. You could wire it through a simple factory temperature switch and then have a toggle that would allow you to bypass the temperature switch if it fails. Did I say if?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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05-16-2009, 09:06 AM | #25 |
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
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I am going to just replace with an OEM style clutch.
The truck is pretty straight. Has 4 new tires and the interior is almost perfect. Also is has AC. This will be my winter commuter/scrap hauling/craigslist/garage sale vehicle. I will be posting some or yesterday's garage sale finds in the for sale section. Need to make some money to buy the parts for the truck. Also pay for the tag and insurance. Allen
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05-16-2009, 09:19 PM | #26 |
Join Date: Mar 2008
Location: Seminole,FL
Posts: 141
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Good score! ANY running vehicle for $150 is a deal.
I found a '97 Nissan for $800 (book is $3k!) Had an almost identical overheating problem. Whoever last changed the thermostat, which was recently, placed it backwards in the housing. So after $7 later from AutoZone, great running Nissan. It's a 2wd, but it's perfect for hauling my junk to and fro. It's even an extra-cab so I can take my crazy dogs with me. lol And the best thing about 2wd 4-cyl Japanese trucks.....gas mileage! I swear this thinggets 30mpg! Ok, maybe not 30..... but dang close! Craig's is a good source for deals, but ya really have to look hard nowadays. There's so many people that have totally unrealistic ideas on pricing. Especially in this economy.
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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." - Albert Einstein |
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05-16-2009, 09:46 PM | #27 |
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
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I am hoping to get 25mpg commuting. My jeep only gets 14-15 usually.
I found today that I can get the carseats installed in the back. I can take all 3 girls with me for home depot runs and such. I think I am going to try to just replace the thermostat and the fan clutch and see what happens. Just drive around my neighborhood an see if it gets hot again. If so we will go from there. Allen
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05-16-2009, 09:58 PM | #28 |
Join Date: Mar 2008
Location: Seminole,FL
Posts: 141
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Mind a suggestion?
I have a metal garden hose "nozzle", JB Welded into a trimmed hockey puck. That then simply connects to city pressure via garden hose. Why? To make a sort of seal to "flush" the cooling system. Because as I learned with my old CJ's and Toy 4x4's, it's a VERY good idea to try and flush the engine when changing the water pump. Whatever crud fouled the pump and/or T-stat, could be floating around and clogging the cooling passages in the block too. It takes a while, but there's a weird sort of self-satisfaction ya get when clear water starts flowing out from the bottom inlet. lol Maybe it's just me. I worked as an auto mechanic for several years(18-24), and one thing I learned from my old Polish master tech was..... "A clean engine, inside and out, will last 3x longer than an engine merely patched with fresh parts." Don't even get me started on cleaning oil passages and valves. Some guys have porn, I have my "projects". lol
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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." - Albert Einstein |
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05-16-2009, 11:10 PM | #29 |
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
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I have thought about trying to flush it out.
Where to place it to flush it out? Allen
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05-17-2009, 09:45 AM | #30 |
Join Date: Mar 2008
Location: Seminole,FL
Posts: 141
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Take off the bottom radiator hose, and when you have the water pump OFF you'll see the "hole" or inlet where to put the "plug" you've made.
Or you could really just stick a garden hose right into some inlets. Some are small enough to not need a homemade "plug", like I made. I made that plug because some cars are different, and I liked the fact I could make a seal. The key is patience....and a big pan to catch the water! You will have to be able to turn the water on though WHILE holding it in place. Otherwise you'll wind up with one of those weird yard toys for kids, called a Wet Willey. Ya don't want coolant dribbling into your yard. Especially if ya have dogs. They absolutely LURVE the taste of coolant, but it's highly poisonous to them. A couple laps could kill a dog. So please be careful! *note* I used a hockey puck because I could easily drill the center hole for the nozzle, then trim down with a combination of saw/dykes/dremel. Ultimately making a kind of big "cork" like for a wine bottle. Takes a while, but dramatically improves the "effectiveness" of the process.
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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." - Albert Einstein |
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