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Are we talking about what i have or whats on ebay... so whos going to tell me what iv got???

I'm not planning on building the engine around turbos as i said earlie. Sell them off and start on a new stroker.

well from what you are saying and the ID tag and the 10 blade turbine it seems like they are 2835s. but considering how awful they are even in external gate form they are going to be even worse in restrictive tiny, low mount internal gate housings. they will be laggy as hell and with the smaller housings you will be loosing top end potential too (compared to the ext gate high mount versions).

the T04Z idea is a bad one too. they are old tech, rubbish turbo. they are just not a well matched combo on a RB26.

the GOOD options are:

twin 2530s or -5s for street/track/drag

twin GTSS -7s/R34 N1s for street/track

or if you want single look at some of the borgwarner offerings, or some new tech garret stuff. there are much better singles than a T04Z.

I don't see the problem in building an engine around a set of turbos. Actually it's a fairly good philosophical perspective for an engine build.

Atmospheric engines are built around the physics (pressure, flow behaviour, density) of our existing atmosphere.

They look to be 2835's. 10blade turbine wheel at 56mm, say 2835 on the housing, measured as 71mm compressor (56 trim) on the housing. Probably sitting in small T3 housing blended into a T28 footprint - just like 2835's.

I give up.. I'm gonna take the all your advice that they aren't what they seem ill put them on my engine. With stock manifolds and stock cams. And if they are 2560 or what every the fark you think they might be i should see reasonable response with decent power... if not not my rep that's gonna take a hit ill be sayig your the ones who gave me the info. ''Skyline guru's'' I'm also going to discard the info 2 turbo places have given me about them. Cause i have had enough of this i told yo so shit.

Your right, me and all my info gathering is wrong... HAPPY NOW. Oh I'm sorry for disagreeing with the ''skyline guru's''

Only other thing to check to completely confirm is the turbine exducer diameter (tip diameter). Typically 84 trim so 52mm (51.8mm).

And hell why not confirm the inducer diameter of the compressor wheel? Should be 53mm for 56trim.

http://www.hksusa.com/products/?id=709

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