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Old 10-30-2012, 10:47 PM   #165
baseballdbk1
Scooby Specialist
 
Member#: 242700
Join Date: Mar 2010
Chapter/Region: Tri-State
Location: Pittsburgh, Pa
Vehicle:
2011 Impreza Wrx Sti
White

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ENGINE UPDATE!

HEADS UPDATE:

Alright, on to the heads...

As I stated previously in other posts, the setup I was previously running has been changed greatly after an intake camshaft lobe from my Kelford 220-C was ground down and made its way through my bucket, broke off the valve stem, put a small crack in the head and sent metal everywhere which was amazing to see when disassembling the longblock

I guess the worst part of this failure is that we can not clearly determine the cause of the failure but oh well and time to rebuild!!!

Changes/Settings:
Installed Ferrea "Drag Racing" dual valve springs, seat locators, titanium retainers, lockers
and seals
Installed Ferrea Competition Plus 1mm+ intake & exhaust valves
Installed new valve seats
Installed/clearanced Kelford 220-D camshafts(min. clearance .0060")
Stick-welded the crack inside of the heads
Roughen up intake ports to fix very slight fuel puddling for better atomization
Super-Flow flow bench tested= 340CFM
Valve spring seat pressure= 90lbs
Valve spring open pressure= 315lbs
Net valve lift:
Intake= 11.55mm
Exhaust= 11.00mm


Coming Together Nicely!!!


Tight Clearances FTW!


Awesome Intake Port Work


New Valve Seats!


Exhaust Port-n-Polish


Crack Repaired With Stick-Weld
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Last edited by baseballdbk1; 11-01-2012 at 10:00 PM.
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