![]() |
|
|
|
Registered
|
cylinder boring?
is there enough material on the 78sc cylinders to bore them out so that 3.2 litre overbore pistons can be used or do i need to buy different cylinders?
|
||
![]() |
|
Author of "101 Projects"
|
It's usually best to just pick up a good used set of 3.2 cylinders...
-Wayne
__________________
Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
||
![]() |
|
Irrationally exuberant
|
Just in case Wayne's answer was too terse... The 3.0 cylinder's sealing groove makes them undesirable for boring out. The 3.2's are the same diameter (95mm) but they don't have the groove so they can be bored out and replated. It may be cheaper to just buy a bored out set outright (from EBS for example) rather than buying some and having them bored out yourself. When I looked into this a couple of years ago it was cheaper to have EBS do it than having US Chrome do it. (EBS uses someone else.)
-Chris
__________________
'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
||
![]() |
|
Registered
Join Date: Mar 2002
Posts: 3,563
|
Guys, what's the max diameter the Carrera 95mm's can be bored out to safely?
I'm thinking of going 98mm!?!
__________________
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 ![]() |
||
![]() |
|