GTLimited

Hey Guys,

I have searched everywhere regarding information on this topic.

I thought i would post here (In Australia, you are refered to as the mother forum :P)

What is the difference between these two turbos besides the **** factor that comes with the letter 'R' and being ball bearing.

Is it actually worth the extra money and what are the advantages and disadvantages of both. Assume they are same trim and compressor size.

How much quicker will the BB spool up. OMG i sounds like a newbiw .. but % wise.

And retail prices what is the difference between the two turbos?

Pretty much what i am after is someone telling me honestly what they think. Not some salesman trying to sell me a turbo.

RETED?? Your opinion?

Cheers
Sam

Zero R

iTrader: (1)

My understanding is the main difference is the "R" unless Garrett has made some rescent changes they will come with the same trim and A/R options either way, the benefits of BB center sections aren't just in spool but in turbine response if that makes any sense, or boost threshold, that's where I've noticed a improvement from BB center sections. Usually you can see a slight increase (a few hundred RPM in most cases in spool), but put a BB turbo on a poorly designed manifold, and a non-BB one can have a quicker spool on a better designed manifold. But put them both on the same well designed manifold the BB will perform better. This can be changed again though just by changing the wheels sizes as well. It would be interesting to see how close the 102mm wheel BB, would spool to the 94mm non-BB.

GTLimited

So basically 'turbo response' and spool time will be quicker by say 2-300rpm?

And the price difference from say a 94mm NON bb and a 94mm BB 54 trim would be roughly how much?

So both are great turbos, just one has better response .. kinda like a lightenged flywheel effect on an engine.?

Cheers
Sam

Zero R

iTrader: (1)

The 42R retails at $2300 most shops sell around $1950, I can do better. Non-bb turbo's I would need to get a price on for exact numbers but figure a couple hundred less.