Oversized Aftermarket Radiator

[andrew3160]

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.

[andrew3160]

By the way, I am on a fresh rebuild. Plugs look normal, and oil looks fine.

[Coupelx]

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.

[andrew3160]

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.

[Coupelx]

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.

[andrew3160]

I will give that a try. I know the overflow is leaking. It soaked my shock cover

[andrew3160]

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.

[andrew3160]

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?

[bansheesandrider]

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.

[Larry's Shee]

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.

[shakar]

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

[06specialedition]

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.

[bigdogchevy98]

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

[jbooker82]

and it's only $20 for a gallon

 

1/2 gallon. 64 oz.

 

Is this a new oversized radiator or an old stock one?

[06specialedition]

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.