Jay's Version VI STi - Page 15 - Perth-WRX.com

VUSSUTE · #**141** 21-02-2017, 03:36 PM

Not sure. I would assume Lane would be aware of these things

VUSSUTE · #**142** 21-02-2017, 03:38 PM

I dont think it could be valve float at only 5800rpm

Quote:

Originally Posted by Bram

What is the spark plug gap.

My car had a similar thing on the dyno last week and gapping the plugs down a bit smaller made a significant difference. Think the next run after the plugs were fiddled with was like 20 or 30 hp higher than before. Was told it could also be valve float but thankfully playing with the plugs fixed it.

My plugs were brand new before the dyno aswell. Just whatever NGKs to suit my model car as original.

Jacob92 · #**143** 21-02-2017, 04:03 PM

Float isnt just rpm related .. boost can also play a part .. what valve springs are in it ? Doubt its an issue thi

using the Perth-WRX mobile app

VUSSUTE · #**144** 21-02-2017, 04:21 PM

Kelford springs to suite the cam.

VUSSUTE · #**145** 21-02-2017, 04:22 PM

They are supposed to be good to 25psi

VUSSUTE · #**146** 21-02-2017, 04:23 PM

KVS109-STi, Single Valve Springs for up to 25lb boost - accessories - Kelford Cams

Them ones

Jacob92 · #**147** 21-02-2017, 04:42 PM

Ah mmm 1.7 bar is ~~ 24.97 psi ish
using the Perth-WRX mobile app

VUSSUTE · #**148** 21-02-2017, 05:06 PM

He ran it at 1.6 bar with no problems. And i want final tune at 1.5

Kaoself · #**149** 21-02-2017, 10:21 PM

I'll be very curious to see what the car finally makes. In Melbourne, the majority of people with bigger turbos are all running E85 and flex fuel, and I know of only one 2.1L stroker.

Why did the engine builder choose springs that are good to 25psi when the rest of the engine should happily be capable of more?

VUSSUTE · #**150** 21-02-2017, 11:22 PM

I asked for double valve springs during the build from RSS.
They ordered the wrong ones. Its kind of my fault as i didnt check them until after they were installed.

Quote:

Originally Posted by Kaoself

I'll be very curious to see what the car finally makes. In Melbourne, the majority of people with bigger turbos are all running E85 and flex fuel, and I know of only one 2.1L stroker.

Why did the engine builder choose springs that are good to 25psi when the rest of the engine should happily be capable of more?

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