Garrett GT3076R with FM2 Cast Manifold?
#1
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Garrett GT3076R with FM2 Cast Manifold?
Hi everyone,
I'm in the final stages of building my BP (83.5 Supertech 8.6, SGI rods, ACL race & ARP everything, boundary oil gears + 99 head) and I'm looking at options to replace my turbo.
Now right from the start I'll say I'm not interested in swapping my entire hot side for a tubular set up. I'd love to but I simply don't have that kind of cash.
I'm looking for a turbo to replace my Pulsar T28 to take advantage of the newly built engine and stumbled across an internally gated Garrett GT3076R with a 0.64 A/R.
Now I have a few questions:
1) Has anyone successfully mated a GT3076R with an FM2 cast manifold? I'm thinking it'll need some serious modification to the engine bay?
2) What do you think spool will be like? I'm used to a little lag with the journal bearing T28 and see full boost around 4200rpm at the moment. To be honest I don't mind the lag. I'll be running BEGI Separated Gasses downpipe and a homebrew 3 inch exhaust
For info the car will be used for a mix of weekend highway and track work.
I'm in the final stages of building my BP (83.5 Supertech 8.6, SGI rods, ACL race & ARP everything, boundary oil gears + 99 head) and I'm looking at options to replace my turbo.
Now right from the start I'll say I'm not interested in swapping my entire hot side for a tubular set up. I'd love to but I simply don't have that kind of cash.
I'm looking for a turbo to replace my Pulsar T28 to take advantage of the newly built engine and stumbled across an internally gated Garrett GT3076R with a 0.64 A/R.
Now I have a few questions:
1) Has anyone successfully mated a GT3076R with an FM2 cast manifold? I'm thinking it'll need some serious modification to the engine bay?
2) What do you think spool will be like? I'm used to a little lag with the journal bearing T28 and see full boost around 4200rpm at the moment. To be honest I don't mind the lag. I'll be running BEGI Separated Gasses downpipe and a homebrew 3 inch exhaust
For info the car will be used for a mix of weekend highway and track work.
#2
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I've successfully tuned a 1.8L w/VVT, a 3076 (externally gated though) and a 3" exhaust that had full spool (29psi) at 4000rpm (3950 IIRC). The VVT did wonders with spool, so did the EBC. So with careful tuning, spool could be good.
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Been there done that.
Above 360-400hp depending on your dyno, you will be flow limited. Above 20psi, I saw about 2hp gain per psi. The turbo could have flowed more. The issue was the log manifold. I had 3" uncatted exhaust.
That said, drive the car like a naturally aspirated miata (rev to red) and you will have boatloads of fun. 4000-5000RPM full boost on the street is not bad at all. You will not be faster than God, but you will have fun.
Above 360-400hp depending on your dyno, you will be flow limited. Above 20psi, I saw about 2hp gain per psi. The turbo could have flowed more. The issue was the log manifold. I had 3" uncatted exhaust.
That said, drive the car like a naturally aspirated miata (rev to red) and you will have boatloads of fun. 4000-5000RPM full boost on the street is not bad at all. You will not be faster than God, but you will have fun.
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