Okay have it torn down. Before removing cam gear I wanted to verify cam timing.
Set #1 TDC with Z1 located on case mark
#1 rocker is now loose and set to 0.004”
Rotate crank 1 revolution back to Z1
Dial indicator measuring 0.120” (3.048mm)
Now #4 rocker is loose and set to 0.004”
Move dial indicator to #4
Rotate crank 1 revolution to Z1 again.
Dial indicator measuring 0.119” (3.0226mm)
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Are these numbers right? Do they seem high?
Stock turbo is 0.7mm and I see people stating they set theirs with sc cams between 1.4 to 1.7?
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For reference, this is what I believe the engine build spec to be. This info was gathered from what I could actually see/verify and what was provided to me at time of purchase(Receipts/Documents provided by seller).
Case:
930/66
Cross drill @ #4 main journal, nitride and finish grind as necc.
Machine main webs: Boat Tail & increase oil passage dia. to #4.
Main Brg: Install 3mm piston squirters & shuffle pin case halves.
ARP Case studs, Nuts, & Washer Set
Crank: Factory 930 (Machined to GT-1 spec)
Cylinders: 98mm MAHLE Cylinders
Pistons: JE 98mm, 3.4L Turbo – Compression Ratio ?
Rods:
Pauter Machine
P/n: 964-230-580-1270F
Material: E4340 C’Molly Steel
Set ID#: J-1,30,32,62,85,106
Center to Center Length: 5.000
Overall weight: 596 grams
Camshaft:
Elgin 108 Lobe 296/276
Static Flow 10.8g/s @ 600KPa
Heads:
930 Twin Plug
Intake ports bored to 42mm
Port & polish intake and exhaust ports
Competition 3 angle valve job.
Valves:
Intake: ?
Exhaust: 930 105 419 50
Intake:
Factory Carrera 3.2
Intercooler:
Dp / Kremer
Engine Management:
Electromotive Tec3r (Upgraded Wintec 4)
Clewett Engineering Crank Pulley and Sensor
Clewett Engineering Scavenge Pump W/Cam Sync Sensor
Tps Sensor?
2 Bar GM Map Sensor
Bosch 2 Wire IAC
Mat Sensor?
CLT Sensor?
Injectors:
Siemens FI114961 63 lb/hr
Turn Off Time=.85ms @ 600KPa
Turn On Time=1.14ms @ 14VDc
Offset=.055ms
Gain=.110ms/mg
Impedance 12 Ohms (High)
Wideband: AEM FailSafe
Turbo Charger: Garrett GT35R, Dual Ball Bearings (Turbo Craft)
BOV: HKS Super Sequential (Part# 1421-SA001)
Fuel Pump: Bosch 044
Dyno Sheet (.9 Bar Boost)
Crack runs entire length of cylinder right along head stud. The two pics are at slightly different angles of #6 to show entire crack.
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