cooling system building up pressure?
Posted: |September 16th, 2017|, 7:04 pm
This post I copied from the general chat, hoping the technically inclined riders could maybe recognise some trouble I'm having with my ever leaking radiator.
Re: New to the forum and my Raptor 1000
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Post by bvdl ยป Sat Sep 16, 2017 11:00 am
Hi Snappy (and others too),
I installed the fixed radiator yesterday and had a trip with it, It had no leaks.
This morning I went to work via the highway and rode a lot faster than yesterday. By the time I was there (24km) the repaired spot was cracked on the same fixed spot for the second time. I find it really strange this happens even after a radiator specialist fixed and tested it at 1.5 bar (22 pounds per square inch)! Also I mounted it underneath with a tiezip, leaving the radiator about a cm of leeway on the underside. This makes me think the pressure in the coolingsystem exceeds normal values leaving the system to break on the weakest spot. I checked the radiator cup and it isn't clogged, I can blow air straight to it. I saw there is an overflow on the expansion tank with a tube to the exterior of the coolingsystem , is this tank actually provided with a pressure regulating valve (I suppose it does...)?
Does anyone had the bad luck of having a small crack in a cilinder head, causing way to many pressure in the cooling system at high rpm's? A large Suzuki dealer near me thinks it shouldn't cause the radiator to leak, given the pressure gets released by the opening cup on the expansiontank. So if you know, which cup is the one that regulates the pressure?
Thank you for your tips and time,
bvdl
Re: New to the forum and my Raptor 1000
Edit Delete post Report this post Quote
Post by bvdl ยป Sat Sep 16, 2017 11:00 am
Hi Snappy (and others too),
I installed the fixed radiator yesterday and had a trip with it, It had no leaks.
This morning I went to work via the highway and rode a lot faster than yesterday. By the time I was there (24km) the repaired spot was cracked on the same fixed spot for the second time. I find it really strange this happens even after a radiator specialist fixed and tested it at 1.5 bar (22 pounds per square inch)! Also I mounted it underneath with a tiezip, leaving the radiator about a cm of leeway on the underside. This makes me think the pressure in the coolingsystem exceeds normal values leaving the system to break on the weakest spot. I checked the radiator cup and it isn't clogged, I can blow air straight to it. I saw there is an overflow on the expansion tank with a tube to the exterior of the coolingsystem , is this tank actually provided with a pressure regulating valve (I suppose it does...)?
Does anyone had the bad luck of having a small crack in a cilinder head, causing way to many pressure in the cooling system at high rpm's? A large Suzuki dealer near me thinks it shouldn't cause the radiator to leak, given the pressure gets released by the opening cup on the expansiontank. So if you know, which cup is the one that regulates the pressure?
Thank you for your tips and time,
bvdl