R1 coolant cap - instant HP increase?

[Stray]

Hello All, 

 

I bought a VTR pusher fan to replace the puller fan on my 5th gen (thanks to this forum!). The seller had a 2011 Yamaha R1 BIG BANG coolant cap on the shelf so I grabbed it for £5, just for a laugh. 

 

Well, it fits the 5th Gen (and probably other models too)!  

 

Here are a few side-by-side pics. R1 cap is brighter and VFR cap is darker

 

And here is the R1 cap fitted. 

 

 

I’m guessing this has to be worth about 15HP at least? Maybe more with a Power Commander?

 

At least my 20 year old filler cap has been replaced with something much newer. Pressure settings are the same (1:1 on both labels) but R1 spring and rubber seal are fresher. 

 

Now I'm off to win a few GPs...

 

 

Stray

[jhenley17]

Depends. Was it an American R1 or a German R1?


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[KevCarver]

1 hour ago, jhenley17 said:

Depends. Was it an American R1 or a German R1?


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Definitely need the German one to unleash the Full Factory Power!