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I just ordered EFR7163 to replace my GT2871r (390whp). Hoping to get at least 450whp
I'm going to do 3 dyno test:
1) EFR7163 T25 dyno with stock VVT cams
2) Add aftermarket VVT cams (custom made cams)
3) Switch T25 housing to T4 twinscroll (have to make new manifold)
I just ordered EFR7163 to replace my GT2871r (390whp). Hoping to get at least 450whp
I'm going to do 3 dyno test:
1) EFR7163 T25 dyno with stock VVT cams
2) Add aftermarket VVT cams (custom made cams)
3) Switch T25 housing to T4 twinscroll (have to make new manifold)
awesome, interested in results! Friend of mine bought a 7163 for his Miata, but it is k24 swapped... should be a great match for that engine. Will be interesting to compare your dyno stuff with his
Hey Muoto,
I followed your old build thread, was a good one.
Do you have the dyno sheet or some speedo videos of this killer setup? I can't imagine how 460whp feels like. What tire size are your running to keep traction in fourth gear
Do you have the dyno sheet or some speedo videos of this killer setup? I can't imagine how 460whp feels like. What tire size are your running to keep traction in fourth gear
Torque is falling like it did with the GT2871r even when boost isnt' so much with help of .85 housing. I'm guessing stock VVT cams are restricting there,...or head ports(lack of flow)..or both what do you guys think?
Torque is falling like it did with the GT2871r even when boost isnt' so much with help of .85 housing. I'm guessing stock VVT cams are restricting there,...or head porting..or both what do you guys think?
It could be both yes.
What head gasket are you using?
I am using OEM one and ARP Bolts hoping not to lift the head.
I am using OEM one and ARP Bolts hoping not to lift the head.
Stock head gasket with ARP bolts. There is a possibility I already lift the head during my last dyno pull as coolant temps suddenly jump. I have to re-torque the nuts next....
damn...I had catastrofic engine failure and part of my broken valves went through EFR, so that's gone
Should I try G25-660 next? I'm really instrested about the spool time with the 0.49 AR housing. Almost 60 lbs/min flow with so small AR, what sorcery is this....