Hmm, you shouldn't have any trouble sourcing the correct bar cap... it is known as a European or Mini-Cap. Mine is a Stant brand that I bought for around 10 bucks.
The conversion is 21.7 psi.
But I don't think you would have any issues with the 1.4. If it runs hotter than before you'll need to up the pressure. Installing one that is too high could potentially cause serious problems.
You can easily have the old cap tested, a lot of times they will have just a very minor leak from an age hardened seal that is hard to detect, so replacing it is a good first start.
The conversion is 21.7 psi.
But I don't think you would have any issues with the 1.4. If it runs hotter than before you'll need to up the pressure. Installing one that is too high could potentially cause serious problems.
You can easily have the old cap tested, a lot of times they will have just a very minor leak from an age hardened seal that is hard to detect, so replacing it is a good first start.
