Single coolant outlet head.. Pros/Cons
- Roostius_Maximus
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Im doing the bore and plug on mine.
I was doing a little research on the cool head and notice that they eliminate the head gasket and o-ring it. Doing this obviously opens up the coolant passages without the restriction of the gasket.
Has anyone kept the stock gasket but bored the holes in the gasket to match the water jackets?? I noticed that my stock gasket holes are only 10mm or so.. Or better yet, is there a gasket that has bigger holes over the water jacket passages???
I was doing a little research on the cool head and notice that they eliminate the head gasket and o-ring it. Doing this obviously opens up the coolant passages without the restriction of the gasket.
Has anyone kept the stock gasket but bored the holes in the gasket to match the water jackets?? I noticed that my stock gasket holes are only 10mm or so.. Or better yet, is there a gasket that has bigger holes over the water jacket passages???
Last edited by AMA714 on March 22nd, 2011, 2:52 pm, edited 1 time in total.
- Roostius_Maximus
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no gasket is bigger, watch the embossment of the stock gasket doesnt get crimped
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MRE Components... http://sdrv.ms/1bs2zhd
- Roostius_Maximus
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the gaskets do have different sized holes to direct more flow, but ya, you're likely bang on with that comment
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- 2strokeforever
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- Roostius_Maximus
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I've made a few of these manifolds for guys
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Overheating is not just about flow volume.Flatbiller wrote:I was wondering on the head gasket too. Can I hog them out a bit with no problems? My shit over heats all the time, it's got new rads, new pump and it still gets hot. I mean it's a little hole for such a big area!
I don't propose that I know squat about cooling systems, but a simple bit of logic...matt_NC wrote:Likely because it is the cheapest, most effective way to produce a reliable gasket.
I suggest that hogging out the holes is probably a bad idea. If you don't restrict the coolant path in that area, the coolant from your radiators will take the shortest path through leaving no time for thermal transfer while the fluid farther away from the inlet and outlet remains in place. You end up with your cylinder being cooled unevenly and warping occurs. Not good.
I'd suggest flatbiller has a pressure problem.
No longer have a CR500.
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo
You guys are doing it wrong,
Brit told me this is how a proper conversion is done, so I took his advice.
...but it hasn't leaked for 2 years!
Brit told me this is how a proper conversion is done, so I took his advice.
...but it hasn't leaked for 2 years!
Yah, I'm from Saskatchetoon!
MRE 02 250/500 conversion, pulse injector, twirp porting, coolhead, MRE ignition, blah blah blah blah... www.millarengines.com
MRE 02 250/500 conversion, pulse injector, twirp porting, coolhead, MRE ignition, blah blah blah blah... www.millarengines.com
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that reminds me. if you have the single hose going to the right side, might as well throw the left rad in the trash because it aint doing nothing but adding dead weight. if you have single hose going to left side, might as well throw right rad in the trash because its just adding dead weight. one hose is bad idea with 2 rads. either way you slice the pie, one rad will be useless.
Ever seen how the OEM 4 strokes are plumbed dumbass?100hp honda wrote:.....if you have single hose going to left side, might as well throw right rad in the trash because its just adding dead weight. one hose is bad idea with 2 rads. either way you slice the pie, one rad will be useless.
Single hose to the left side, with a cross over connecting the left rad, to the right.
Stick your tongue on the right side sometime, to see if its "working"
Put that on YouTube....
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anybody with a single hose bike have a temp gun ? be interesting to see the difference between right and left side. i remeber when my waterpump blew up, the rads were stone cold while the engine was hot as hell. with single hose, i see most of the right side rad being fairly cool ( indicating its not contributing anything to the cooling system function ), while the left side is similar temp as the cylinder.
what you think ?
what you think ?