andrew3160 Posted April 4, 2011 Report Share Posted April 4, 2011 Anyone have problems with boiling and loosing your coolant. I am using the cap that came with it and i will loose almost half my coolant on a two hour ride. The cap that came with it is a .9 and the stock is a 1.1. Any thoughts guys? I don't like the thought of my radiator being half empty during a ride. I bought the alum radiator on eBay from a US company that I believe to be known in the industry. Just cant think of the name. I know there has been a debate about them before. Quote Link to comment Share on other sites More sharing options...
andrew3160 Posted April 4, 2011 Author Report Share Posted April 4, 2011 By the way, I am on a fresh rebuild. Plugs look normal, and oil looks fine. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted April 4, 2011 Report Share Posted April 4, 2011 go to the parts store and get a new name brand cap. the same cap is used on honda cars and is a 13lb cap i believe. it solved alot of my coolant loss problems. Quote Link to comment Share on other sites More sharing options...
andrew3160 Posted April 4, 2011 Author Report Share Posted April 4, 2011 You think that's it or do you think I am burning it off too. I find it hard to believe I could be burning it in the cyl. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted April 4, 2011 Report Share Posted April 4, 2011 its possible. it happened to me and i never noticed until the radiator was damn near empty since being a 2 stroke it smokes aways. do you run a coolant bottle? if not rig one up and go rip around to see if it fills up. Quote Link to comment Share on other sites More sharing options...
andrew3160 Posted April 4, 2011 Author Report Share Posted April 4, 2011 I will give that a try. I know the overflow is leaking. It soaked my shock cover Quote Link to comment Share on other sites More sharing options...
andrew3160 Posted April 6, 2011 Author Report Share Posted April 6, 2011 What radiator cap are some of you running on your built bikes? I had a .9 which is like 13.05 psi. I am going to run the stock one which is a 1.1 that is 15.95 psi. If I understand correctly, built motors will create more pressure in the cooling system because it revs higher. Checking everything again to night. Quote Link to comment Share on other sites More sharing options...
andrew3160 Posted April 6, 2011 Author Report Share Posted April 6, 2011 it is the heat the causes the pressure increase. also moving water is less pressurized than static water. Is that typical of a built bike? Quote Link to comment Share on other sites More sharing options...
bansheesandrider Posted April 6, 2011 Report Share Posted April 6, 2011 Is that typical of a built bike? Yes it is the heat that builds more pressure, not more RPMs, the water pump is not that efficient of a pump that more RPM will build more pressure. A built motor generates more heat, because to make power you burn more fuel and when you burn more fuel you release more energy which is more heat. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted April 6, 2011 Report Share Posted April 6, 2011 Also consider the fact that water boils at a higher temp under pressure than at atmospheric pressure. The cap you have now might not be building any pressure, things do wear out. Quote Link to comment Share on other sites More sharing options...
shakar Posted April 6, 2011 Report Share Posted April 6, 2011 (edited) thers a link to a site on here somewhere that sells the caps with the temp gauge ontop there pretty slick maybe do a search or somone may remember witch one in jump in goodluck Edited April 6, 2011 by shakar Quote Link to comment Share on other sites More sharing options...
06specialedition Posted April 6, 2011 Report Share Posted April 6, 2011 thers a link to a site on here somewhere that sells the caps with the temp gauge ontop there pretty slick maybe do a search or somone may remember witch one in jump in goodluck Thats the cap I run. Mr. Gasket makes it. I think I got mine from Summit Racing. Quote Link to comment Share on other sites More sharing options...
bigdogchevy98 Posted April 6, 2011 Report Share Posted April 6, 2011 You think that's it or do you think I am burning it off too. I find it hard to believe I could be burning it in the cyl. correct me if i'm wrong, but if you were burning the coolant in your cylinders, wouldn't that make your spark plugs white? also, fyi, i know "Engine Ice" is a special coolant that supposedly lowers temps on engines up to 50 degrees. I've heard nothing but good things about Engine Ice, and it's only $20 for a gallon Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted April 6, 2011 Report Share Posted April 6, 2011 and it's only $20 for a gallon 1/2 gallon. 64 oz. Is this a new oversized radiator or an old stock one? Quote Link to comment Share on other sites More sharing options...
06specialedition Posted April 6, 2011 Report Share Posted April 6, 2011 how well does that work? might be something i would like to get on mine ride. It works pretty well. I made sure to buy the higher psi one. It is a tight fit on an aluminum radiator, but it works. Quote Link to comment Share on other sites More sharing options...
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