Evolution Auto Performance : Project Horny Restart :)

[felix yuen]

April 03 2012
HEAD WORK
-Supertech 1mm over size Stainless Intake Valves
-Supertech 1mm over size Inconel Exhaust Valves
-Supertech Ti retainers
-Supertech Double Valve Springs
-Supertech Spring Seat
-Supertech Valve Guides
-Supertech Valve Seats
-Custom Head shims
-Grex 272 cams
-Tomei Cam Gears
-Drilled for oil return
-5 Angle Valve Grind Job
-Gasket Matched In/Ex Port
-Fully Polish Ports + Knife Edge Dividers

[Messiahlee]

Wow that looks awesome.
The pictures are soo clear.

[felix yuen]

Wow that looks awesome.
The pictures are soo clear.

some pics are taken by iphone 4

[actionbstard]

glad there is a comeback.
I also used a N1 to break in my motor. Guess I was lucky.
all tho I never pushed it beyond 7k while breaking in the motor at the dyno.
Now i sold my jun pump and kept the N1 rev limit is at 9k
with a reimax oil gear kit.
wouldn't do it on a rb25 with out solid lifters tho....

[Black BNR32]

flow bench numbers available?

[gtrjon]

mind me asking how much was the machining for the head? including the 5 angle valve grind and the port?

[felix yuen]

mind me asking how much was the machining for the head? including the 5 angle valve grind and the port?

$1600 for labor
$1500 for parts
$1000 for the cams

[gtrjon]

that labor is CHEAP especially for the port.

[NismoS-tune]

that labor is CHEAP especially for the port.

Maybe it's cheap because it was possibly done with an "eyecrometer" and not flow tested for balanced flow across all ports...

[gtrjon]

Maybe it's cheap because it was possibly done with an "eyecrometer" and not flow tested for balanced flow across all ports...

regardless. i paid close to the same for my machining with no port whats so ever. not going to get into it but the "benefits" from porting are still questionable. for a true bench tested port and polish you should be looking at ~3k

[felix yuen]

regardless. i paid close to the same for my machining with no port whats so ever. not going to get into it but the "benefits" from porting are still questionable. for a true bench tested port and polish you should be looking at ~3k

yeah building head is expensive !!!...it's all labor intensive thats why.
i am not too worry about flow numbers....i am just looking for something reliable.

[felix yuen]

a visit the evolution auto performance today
May 18 2012

great results from the head builder and things are beginning to look great

head drain


external oil pick up


Stealth ITB



Misc pics














Mock up



one from home

[dah_hunter]

I was down there yesterday as well around 3pm. Kevin was tuning that honda..

I saw your car. mine is almost ready to fire up.

:-)

[MarusGTR]

Just wanted to chime in and say that 1. very nice engine and attention to detail 2. Boss wheels on the GTR!

[RABBIT]

lol what kind of wheels on the the 32 in the pictures of it in the shop?