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Got it out - you're right, it seems like the previous owner installed a regular 10mm bolt. At least I know it's been rebuilt before! I had to remove the TOPS valve above and got an extra long 10mm...

Trying to removal the supercharger on my 08' RXP 255. I have the lower 2 bolts out, but cannot for the life of me figure out how to get the top rear-facing bolt. I think it's 10mm but I can't find...

Always wanted to try this too. Keep us updated if you do!

Man, I was really looking into getting a 21 GP1800 SVHO in the next few weeks but this has me a bit spooked. What is going in with Yamaha quality control right now?

Installed a Riva open loop (Setup like the instructions) on my 2008 RXP this year and I'm wondering about winterization. Temps will get down below 0f where I live and want to make sure I don't have...

Is it better to gauge the oil temp from the water line coming off the cooler then? Or is there a good place to install a 1/8 NTP sensor plug?

Trying to get oil temps from my IR gun - if I point at the bottom of the filter housing after a long run I'm seeing 180f. How hot does that mean the oil inside the housing is? I understand I want...

Sweet, that looks like it will work perfectly. Thanks!

Has anybody found a good water PSI gauge that fits nicely on their ski? Mounted to a handlebar or something? Hoping to install a gauge to monitor water pressure going into the intercooler.

I have the Riva Open Loop kit installed according to the stock routing instructions on my 08 RXP-X 255. I went out for a 30 minute ride yesterday and checked my oil afterwards and...

This same clamp came off for me today but on an 08 RXP-X. Lots of water in the hull and exhaust overheat. What did you end up doing? Double clamp? Better clamp? Just tighten it more?

Got exhaust off and access to the hose. Still wondering if I should install the water bypass fitting above or below the water line? Anyone install theirs on the side like a waverunner?

Decided to order a RIVA Open Loop kit for my 08 RXP 255 and I'm going to attempt the install this weekend. I read through the instructions and everything makes sense but I have a few questions:
...

Well, problem found. I'm thinking since I already have so much of the ski taken apart I may just switch to Open Loop.



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I changed the water pump housing in my 08 RXP and it's not holding coolant. All hoses are attached and tight. If I stick my hand down I can feel it pouring out in a pretty steady stream coming from...

Screw driver did the trick. Lots of prying and used a small allen wrench to get it started. That was a lot of work.

Any tricks to removing the Oetiker clamps on the lines running to the water pump housing? I have the Riva Oetiker tool but I can't see well enough how these go on. Do I try to loosen the crimped...

When reinstalling the cooling lines, should I use the supplied Riva oetiker hose clamps, T-Bolt clamps, or just grab some SS hose clamps from Home Depot?

I bought the Riva 160f thermo kit and I'm at the point of installing the billet ring around the housing. I've read a lot of people having problems with these blowing off under pressure and losing...

I had the same problem in my 08 RXP a couple weeks ago. Replaced the start relay and it's good as new.

Just wondering what range of temperatures are normal for an 08 RXP 255? I blew a head gasket last summer, dealer replaced, and now I want to make sure the cooling system is working correctly (dealer...

Hoping to install a cylinder head temp gauge and have it turn off/on with the lanyard switched power. Any ideas on the easiest way to get 12v?

Trying to use my IR temperature gun to get engine temperatures on my 08 RXP after a hard run (no engine temp on dash for this year). Where would should I point the gun to get the most accurate...

Ran the ski for about 20 minutes the other day and everything ran well. At the end of my run as I was heading back to the dock, I saw P0111 flash across the cluster. Do I need to replace the intake...

You mean you used water with DEI Radiator Relief? Or did you mix with coolant?