2G GS EU spec (N/A 4G63) Camshaft vs. GST Camshaft

[patman]

Hi guys!

I have a 2G GS (EU spec, N/A 4G63). I converted it to turbo, mostly with stock GS-T parts. I changed the pistons to EVO 8, but I left the cylinder head OEM. Does anyone have any information about the Eu spec camshaft being different then the GS-T camshaft?

The car behaves normal, I have no issues with these Eu spec cams, this is mostly just for curiosity, I'm thinking about changing them to BC 268/272. Would that have any benefit?

 

[MindBlowin03]

I looked up the part numbers are they are different. I don't know what the differences would be so take that for what it's worth.

 

[FIBA M - EC17PSE]

Hi guys!

I have a 2G GS (Eu spec, N/A 4G63). I converted it to turbo, mostly with stock GS-T parts. I changed the pistons to EVO 8, but I left the cylinder head OEM. Does anyone have any information about the Eu spec camshaft being different then the GS-T camshaft?

The car behaves normal, I have no issues with these Eu spec cams, this is mostly just for curiosity, I'm thinking about changing them to BC 268/272. Would that have any benefit?

are you able to measure your NA ones? i can then measure the turbo cams and see if their is a big difference

 

[patman]

I looked up the part numbers are they are different. I don't know what the differences would be so take that for what it's worth.

What are the part numbers? Maybe I can find out more if I try to look up their specifications. I was almost sure there is a differnece, the CR numbers are different in the 2 variants too...

are you able to measure your NA ones? i can then measure the turbo cams and see if their is a big difference

Thanks but they are pretty much in the engine right now, and I don't want to open it up, until I see if it's actually worth it. I will wait a bit, maybe someone knows the differnece. Otherwise I might have to open it up to see.

 

[FIBA M - EC17PSE]

What are the part numbers? Maybe I can find out more if I try to look up their specifications. I was almost sure there is a differnece, the CR numbers are different in the 2 variants too...


Thanks but they are pretty much in the engine right now, and I don't want to open it up, until I see if it's actually worth it. I will wait a bit, maybe someone knows the differnece. Otherwise I might have to open it up to see.

do your cams have the letter marked on them? having a search it seems the NA cams are slightly higher lift.

This may help you

4G6x DOHC
Listed is the open/close, (duration), cam height, and lift.
Letter= Cam ID mark

Intake
A-26/46 (252) 35.49 9.5mm
B-21/43 (244) 35.20 9.0mm
C-23/57 (260) 35.79 10mm
D-21/51 (252) 35.49 9.5mm
E-16/48 (244) 35.20 9.0mm
F-26/38 (244) 35.20 9.0mm
G-18/62 (260) 35.79 10mm
H-Unassign
I-Unassign
J-21/51 (252) 34.91 8.5mm
K-18/62 (260) 35.38 9.3mm

Exhaust
A-55/9 (244) 35.20 9.0mm
B-Unassign
C-57/15 (252) 35.49 9.5mm
D-54/18 (252) 35.49 9.5mm
E-43/17 (240) 34.91 8.5mm
F-53/07 (240) 34.91 8.5mm
G-63/21 (264) 35.49 9.5mm
H-63/21 (264) 34.91 8.5mm
I-Unassign
J-57/15 (252) 34.91 8.5mm
K-Unassign

 

[patman]

Thank you!

I asked around yesterday, and found out they are different. The N/A ones are tuned for more torque, but lose power after 5k rpm, the GS-T ones are more in sync with the turbo.

But with my little t25, there is no sense in changing... it dies after 5k anyways

 

[FIBA M - EC17PSE]

Thank you!

I asked around yesterday, and found out they are different. The N/A ones are tuned for more torque, but lose power after 5k rpm, the GS-T ones are more in sync with the turbo.

But with my little t25, there is no sense in changing... it dies after 5k anyways

Change the DP and you will make it much better! When i did this i noticed a HUGE difference in spool and rev band change. It was crazy the stock DP restriction has. I did the entire system also but i know the DP was a massive issue due to the size. But i kept that at 2.5" where the system is 3" so if you are still stock sized get this addressed to help