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Join Date: Mar 2002
Posts: 3,563
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Valve-Train Components
Curious, what is the typical upgrade path for valve-train components in a high output 911 turbo engine?
Stainless? Iconel? Titanium? Holey? Brillium Copper? Phosphorous Bronze? Just some forward planning for my 140k top end rebuild. Thanks in advance 
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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09-25-2002, 05:38 PM
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The ultimate setup in my opinion.....
Stainless - sodium filled valves (fully tuliped) or perhaps the new vanadium-titanium valves. Phosphor-bronze guides. Teflon seals (fitted to guides). Uher Vasco-Jet springs (dual or triple). Titanium retaners with 7 deg locks. Hardened lash caps on valve stems. My 2 cents. Bob
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Bob Hutson |
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09-25-2002, 05:50 PM
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I been told............
Stock Valves Phosphor-bronze guides. Titanium retainers ASSA Racing Springs Hardened lash caps
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09-25-2002, 06:18 PM
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Join Date: Nov 2000
Location: AZ
Posts: 8,414
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Might as well throw in a set of forged RSR rockers while you're at it!
Last edited by Eric Coffey; 09-25-2002 at 06:34 PM.. |
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09-25-2002, 06:29 PM
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Valve Train
The ultimate!!
Un-obtanium - racing parts available only to the factory teams! Fred Cook '80 911SC |
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09-25-2002, 06:33 PM
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Harley
1988 Porsche Carrera 3.2 Turbo
Zeus (god of thunder and lightning)
