Originally Posted by Rafa
(Post 364525)
I showed your car's pics to a friend (he also owns an RX-7 like yours) who's rebuilding his engine and he wants to know at what RPMs do you see boost with that T3276.
FWIW, he drags his car regularly but also uses it as a dd. Thanks |
So is my GT3271 a good size turbo for my 1.8? From what I can tell, it's efficient to 23 PSI. I bought it because I wanted to go to 300whp from the begining and after building a motor sit around 350whp. I'm around 270 right now. It's not the fastest spooling turbo, but the power is nice.
That turbo setup you posted is badass. What paint is that on the charge pipes? Makes them look cast. EDIT: And why is my turbo called a GT3271 instead of a GT3278? It's a .78 hotside divided turbine. |
Originally Posted by patsmx5
(Post 364573)
So is my GT3271 a good size turbo for my 1.8? From what I can tell, it's efficient to 23 PSI. I bought it because I wanted to go to 300whp from the begining and after building a motor sit around 350whp. I'm around 270 right now. It's not the fastest spooling turbo, but the power is nice.
That turbo setup you posted is badass. What paint is that on the charge pipes? Makes them look cast. EDIT: And why is my turbo called a GT3271 instead of a GT3278? It's a .78 hotside divided turbine. With regards to your GT turbo nomenclature question, the reason your turbo is called a GT3271 is because it has a 71mm compressor wheel. The GT32 identifies the turbine size and the 71 identifies the compressor size. The wheel trims and housing ARs are not indicated in the designation. There is no paint on any of my aluminum hardware. It is all bead-blasted. That is what give it the dull mat finish look. You have to be really careful when handling it though. If you get oil or dirt on the mat surface, its really hard to clean. |
Thanks to everyone for the warm welcome. I've been scouring the forum for the past 2 days straight gathering info and trying to learn as much as I can from what people have been doing. I think I'm ready to start making decisions and gathering parts from my own turbo build. I have lots of questions and want to get as much advice/input as I can as I go. My last question for this de-noobing thread is - where is the best place to put my pre-planning/build thread. Here is a little background:
I'm starting with a 99 NB with a completely stock drive train. The car has already seen extensive track time (~10k miles). It's a fantastic track car just as Mazda built it but, as everyone who has a Miata knows, its HP challenged. The goal is ~200rwhp with a focus on durability and thermal management for road course track duty. The car will regularly see 40 minute sessions at full load on the high desert tracks of SoCal. I already have a brand new Garrett GT2560R that has been sitting in a box in my garage for 7 years waiting for this moment. |
Originally Posted by DrTurbo
(Post 364872)
where is the best place to put my pre-planning/build thread.
My suggestion would be in the "Builds" Sub-section of the "Media" Section but you could also do it in the "DIY Turbo" Section. |
Dear Dr. Turbo,
Can you please point me to SAE papers or other technical publications on CAC sizing and the relative merits of bar-plate vs. tube-fin CACs? I personally think the latter is better for a street-driven or auto-x vehicle where low lag is important. I have searched the SAE database and found none. Does garrett not publish at least some of their findings? Thanks. |
Originally Posted by The_Pipefather
(Post 364995)
Dear Dr. Turbo,
Can you please point me to SAE papers or other technical publications on CAC sizing and the relative merits of bar-plate vs. tube-fin CACs? I personally think the latter is better for a street-driven or auto-x vehicle where low lag is important. I have searched the SAE database and found none. Does garrett not publish at least some of their findings? Thanks. |
Started a build plan thread
For anyone who is interested, I started a thread on my build plan here:
https://www.miataturbo.net/forum/t31289/ |
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