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Dyno Comparo - Various Twins Rb26

R31Nismoid

By R31Nismoid,
in Engines & Forced Induction

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R31Nismoid Grand Master

R31Nismoid

Posted
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How come the one with -9s has boost control issues?

I'm curious on how -9s with boost control issue fixed would stack up compare to -7s in terms of response.

Don't know. Mate of mine said mine was quite a bit more responsive than his, given our turbos are similar, we now know why.

No doubt he'll get it fixed eventually. Could be 100 things.

adzR34 Collaborator

adzR34

Posted
Posted

Ash, great effort on the comparo this is exactly what makes this site useful.

I'm looking for turbos at this stage and your turbos seem very appealing, theyre more responsive and overpower the 9s. Boost issues aside, the 9s seem to be behind these hybrids by some way.

Do you know if race pace will be selling these offshelf?

Count Grantleyish Grand Master

Count Grantleyish

Posted
Posted

Don't know. Mate of mine said mine was quite a bit more responsive than his, given our turbos are similar, we now know why.

No doubt he'll get it fixed eventually. Could be 100 things.

With a GTR, it's more like 10,000 things!

Yeah yours look as responsive as, wouldn't mind having a ride in it.

I'm curious on -9s being bit laggier than -7 from my exprience, it's the other way. But I'm comparing 302rwkw GT-SS to 270rwkw R34 N1 with EBC, but I'm comparing apple with orange here.

R31Nismoid Grand Master

R31Nismoid

Posted
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Posted

All I know so far is they are 4 GT2860's made into 2.

Given Garrett don't sell the wheels separate to the cartridge for that series... So it gets very expensive quite quickly.

When I find out more I'll update.

bigmikespec Veteran

bigmikespec

Posted
Posted

Garrett don't sell separate but you can get individual parts for Garrett turbos elsewhere.

SimonR32 would be interested to see your old T04Z graph I know it is a twins thread but just for comparisons sake as you had it pretty sussed out. Or maybe the thread should stay on topic a bit longer :)

SimonR32 Grand Master

SimonR32

Posted
Posted

Garrett don't sell separate but you can get individual parts for Garrett turbos elsewhere.

SimonR32 would be interested to see your old T04Z graph I know it is a twins thread but just for comparisons sake as you had it pretty sussed out. Or maybe the thread should stay on topic a bit longer :)

Similar to the 517z's up to about 120 then ramps hard and monsters everything... But yes stick to low mounts for now :)

Snowman Grand Master

Snowman

Posted
Posted

I discounted this because it had the better motor, but still same turbos :)

Really the major difference between the 2 is the amount of boost they are running.

Either way - they were both good track set-ups thats for sure. For everything else I'd prefer Ash's one.

  • 1 year later...
RB2600 Rising Star

RB2600

Posted
Posted

All I know so far is they are 4 GT2860's made into 2.

Given Garrett don't sell the wheels separate to the cartridge for that series... So it gets very expensive quite quickly.

When I find out more I'll update.

Apologies for the MAJOR thread revival, but I don't think anything else has been mentioned about these Racepace Hybrid turbos on this forum according to what my search results are showing.

Was the EBC eventually installed to see if there was any difference? (especially after the boost curve of this setup crosses over with the -7 setup, if it were able to at least maintain 19psi like the -7, that would be interesting to see)

Was there any further development into this setup?

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