Triumphrat

bigD · 11-05-2012, 08:17 AM

A relatively common problem on the 955 Tiggers that gave exactly the same symptoms was down to the Thermostatic valve on the cap not functioning properly & the cooling system not pressurising properly I went through a couple of Trimph caps before fitting a similarly rated Auto cap (from nissan if I recall). the caps would last a year or so then die. Since I replaced the cap last time I have had 4 years without grief. The cap was nearly half the price of the Triumph one as well. I am not familiar with what is fitted in the 800s but I would check if the cap is working (or leaking) simple test for whether the valve is working is to dunk the cap in a pan of water & bring to the boil. watch what is happening & if the water gets to boiling point without operating then replace it.

Cuchulainn · 11-05-2012, 02:18 PM

Quote:

Originally Posted by framebinder

I never counted the bars, but mine's just below half way up.

Same with mine, right around the half way mark. 5 bars I believe?

stunod66 · 11-05-2012, 08:18 PM

When it overheats it runs up to 8 bars. Normal temp is at 5 bars. It has gotten worse and will overheat any time it is ridden hard. The dealer has it and is in contact with Triumph. They have been working hard at it but the problem remains a mystery. Hopefully I can get this resolved soon.

Cuchulainn · 11-05-2012, 08:43 PM

Quote:

Originally Posted by stunod66

When it overheats it runs up to 8 bars. Normal temp is at 5 bars. It has gotten worse and will overheat any time it is ridden hard. The dealer has it and is in contact with Triumph. They have been working hard at it but the problem remains a mystery. Hopefully I can get this resolved soon.

It was a mystery to my dealer as well, they couldn't find a cause and could never get it to repeat when they had it in their position. They did the drain, flush and bleed as an attempt to resolve what was basically a random and symptomless problem. Luckily what they did seems to have resolved it. It has been working great since. Not sure if your problem is the same or not, but the symptoms sure sound the same. I still carry a bottle of HD4X OAT Coolant with me, but I haven't needed it.

stunod66 · 11-13-2012, 08:58 PM

Well it turns out my Tiger has a warped head. They don't keep them in the USA so I have to wait a couple more weeks for a new head to show up. I'm pretty bummed about my 2000 mile engine being opened up but happy to finally know what is wrong with it. It looks like I will be without it for about 3 more weeks.
Going without my bike this long has given me too much time to troll the forums and read about warranty nightmares. Fortunately this has not been the case with my dealer. It has been a slow process but they have done everything they can to resolve this issue.

NORTY FLATZ · 11-30-2012, 06:29 PM

How did it get a warped head?

Is it very warm in Texas in September? Or, is it just stoopid windy?

What RPM are you running to make 110MPH? (Mile after mile, according to you.)

Nahhh, that couldn't be it....

stunod66 · 12-01-2012, 03:52 PM

Quote:

Originally Posted by NORTY FLATZ

How did it get a warped head?

Is it very warm in Texas in September? Or, is it just stoopid windy?

What RPM are you running to make 110MPH? (Mile after mile, according to you.)

Nahhh, that couldn't be it....

It's still up in the air if the head is the cause of the problem or the result of overheating. Hopefully I will get it back this week. It was in the 50's the last time it overheated so ambient temperature has nothing to do with it. It's been so long since I've ridden it I don't remember what rpm's it runs at 110. As soon as I get it back I will know because I am gonna test it hard right away.

NORTY FLATZ · 12-04-2012, 02:32 PM

OP~
Do you have a front fender extension (lower) on your bike? This could reduce the airflow to the radiator, thus causing your overheating issue. Does it overheat at 4000RPM in 5th or 6th gear?
Have you checked for anything obstructing airflow thru your rad? Anything between the fins? Dried mud/dirt? Piece of a plastic garbage bag? Leaves?

Have you used water wetter?

Just trying to figure this out.

blacktiger · 12-10-2012, 04:13 PM

Quote:

Originally Posted by NORTY FLATZ

OP~
Do you have a front fender extension (lower) on your bike? This could reduce the airflow to the radiator, thus causing your overheating issue.

That's rubbish. How much air do you think comes through the wheel? Most of the rad is higher and wider than the front wheel. And, since I have the extender and don't overheat.............

I'd go with an airlock in the cooling system. At least when you get your new head they'll have to fill the coolant and bleed it. Hopefully they'll do it right.

NORTY FLATZ · 12-11-2012, 02:20 PM

Quote:

Originally Posted by blacktiger

That's rubbish. How much air do you think comes through the wheel?

Likely a fair amount as the trailing shape of a wheel is round.

Quote:

Most of the rad is higher and wider than the front wheel. If you want to nitpick, the tires tread pattern and depth make a difference too. (Think of a dimpled golf ball vs. a smooth golf ball. Which one is more efficient flying through the air?)

Please don't say that a radiator must be totally blocked for it to saturate the heat. Let's say we both know only a partial blockage can/will cause an issue.

Quote:

And, since I have the extender and don't overheat.............

Your system hasn't reached saturation point.

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I'd go with an airlock in the cooling system. At least when you get your new head they'll have to fill the coolant and bleed it.

Your "airlock" is likely cavitation.

Quote:

Hopefully they'll do it right.

Hopefully!