H20 Radiator Help

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Uh oh….so I have a panagali 25 Anniversario 916, basically a 2020 V4S with 2019 fairings and some V4R parts on it.

I ordered the H20 but am now realizing that maybe the fans can’t be used?…so I can’t install it as my bike is mostly a street rider bike?

Anyone know if the fans cam still be used with the H20 on a V4?
 
I know it's a stupid spelling but how does anyone misspell Panigale when it's at the top of the page? Lol

No clue about the h20 but can give you a hard time about your spelling! :cool:
 
That's correct the oem fans won't mount up to the H2o. Regardless your on the track or street you really don't need the fans with the H2o. I don't use a fan on my H2o so as long as you are not sitting in LA or NY traffic and moving air into the radiator fans are useless.


Uh oh….so I have a panagali 25 Anniversario 916, basically a 2020 V4S with 2019 fairings and some V4R parts on it.

I ordered the H20 but am now realizing that maybe the fans can’t be used?…so I can’t install it as my bike is mostly a street rider bike?

Anyone know if the fans cam still be used with the H20 on a V4?
 
I know it's a stupid spelling but how does anyone misspell Panigale when it's at the top of the page? Lol

No clue about the h20 but can give you a hard time about your spelling! :cool:

lol…I would like to blame it on speech to text, or the baby having a meltdown at bedtime while I was posting, but really it’s just laziness haha
 
That's correct the oem fans won't mount up to the H2o. Regardless your on the track or street you really don't need the fans with the H2o. I don't use a fan on my H2o so as long as you are not sitting in LA or NY traffic and moving air into the radiator fans are useless.

right on, I was wondering that too…though I expect that at stop lights that could get pretty hot without a cooling fan…also the fan stays running after the bike stops to keep cooling it, any issues there?
 
If your stuck at stop lights even with a fan its gonna be hot so they don't do much for these bikes.


right on, I was wondering that too…though I expect that at stop lights that could get pretty hot without a cooling fan…also the fan stays running after the bike stops to keep cooling it, any issues there?
 
The absolute last thing you want on that platform is more electronic garbage. If you do a fan with the H2O just put a damn toggle switch on a fan and call it a day. I ran that setup for years.

gunna see how it does without the fan, the thing I was looking at about that electronic doodad was that the water flow is not tied to rpm mechanically and you can keep a high level of circulation even at lower rpm like at traffic light stops. Which SEEMS like it would work well with the H20 in the absence of a fan with all that extra tubing abs surface area in the H20.

All that extra surface area from the extra tubing doesn’t mean much without water flowing through.

they claim a horsepower gain by getting rid of some parasitic loss from the mechanical water pump, but that can’t be much.
 
While the bike would heat up at idle, it will cool off once it is back in motion quickly with the H2O. I'm not sure just how long you intend to be just sitting there idling. If there's a spot where you always end up sitting still for a long time like a railroad crossing or whatever, just shut the bike off and wait.
 
While the bike would heat up at idle, it will cool off once it is back in motion quickly with the H2O. I'm not sure just how long you intend to be just sitting there idling. If there's a spot where you always end up sitting still for a long time like a railroad crossing or whatever, just shut the bike off and wait.

yeah, I was thinking about that, it’s not like I commute in the bike, I only ride it for ‘fun rides’.

even when in traffic I’m riding between the cars and maintaining a good 30 mph at least
 
The stock fans running after the bike is switched off, is surely just a gimmick. All they do is marginally cool a very small bit of water in the radiator directly in front of the fan.
 
The stock fans running after the bike is switched off, is surely just a gimmick. All they do is marginally cool a very small bit of water in the radiator directly in front of the fan.

There are times when I don’t mind it but there are times when it’s super annoying. Like when you pull into a gas station and are trying to talk to someone. I wonder if they are trying to reduce heat soak from the engine to the gas tank. My tank would boil for a good 10min after a ride in the summer before I modded the EVAP canister.
 
I’m fine running it without fans, but Giovani at the place that makes the H20’s in Italy replied to an email and said there may be a solution to running the radiator on the street….I’ll keep the thread updated as I find out more.
 
This is interesting, reply to my emails with the makers of the H20 Radiators in Italy.

they can either retrofit provisions for the fans or just make one with the provisions on there already….one thing about that email, apparently the stock abs lines to the front need provisioned too.

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H2O can do any solution you want. I had them make me a bunch of all water 1pc radiators for the 99s. One in particular uses 2 4” fans on the top section so you can run the big tube SBK pipe which is too large and too close to the lower section to run a lower fan.

I am currently running another version with a 6” lower and a bracket I made. It’s all possible, but you need to get the engineering figured out for everything to fit right. I have a custom harness that sits lower across the air box (1299) so the top fan clearance isn’t an issue.

It would be for someone running a stock harness so you need to figure out where the fan/fans are going to fit, and what else you need to reconfigure to make it work. Bottom line is, easy to do but you do need to engineer it for your application.
 

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