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  • 10 months later...

Just a small update, maybe it's usefull for someone in the future.


I bought the -9's and got them fine balanced. I don't have a dyno graph yet because it was just mapped on the street, but I'm very happy with them. Full boost (1,45 bar) is at 3900-4000rpm with Tomei cam gears in stock position until now. Will adjust this on the dyno in the near future and see what it will do for better spool, I'm sure this will bring some extra response and midrange power.


I really like it, that I get the same boost earlier than before. 1 bar was at 3800rpm before, now it's 1 bar at 3500rpm.

Edited by GT-R David

The Garrett balancing is max of 1g up to 30000rpm and max 2g after that.

Mine are balanced to max 0,2g now.

Can upload a chart of the balancing if someone is interessted.

Wasn't that expensive, so thought I maybe won't feel a difference, but won't harm.

This for example is what a normal balancing diagram looks like:

rover-75-1.8-turbocharger-cartridge-chra

The balancing from factory is anywhere below the big line.

I attached a picture of one of mine now

post-136947-0-54129100-1442040459_thumb.jpg

You can see the big line on the left corner. The balancing should be anywhere below the line to meet the manufacturers specification.

I think you won't feel a difference at all. All they say, the Turbos last longer with a better balancing.

This is how the biggest Garrett dealer in Germany discribes the Garrett balancing:

Garrett balanced the core assembly of the GT-R and GT-X turbocharger according to appropriate guidelines in a reasonable and cost-efficient framework. This balancing is usually sufficient. If it's not enough for you and you want a more exact balancing for your turbocharger, we can perform this for you. The costs for this is 130EUR. The work delays the delivery of your turbocharger to a maximum of one working day.

Before and after adjusting the cam gears?

Yes I will.

Before and after adjusting the cam gears?

Yes I will.

should be a big difference, the inlet cam really responds well to adjustment on the RB26

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