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resident samsquanch
 
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As I mentioned, mine is daily driven (non EFI) and twin plugged and I'm rollin' with the W4CSs. I ordered them today and should get them next week! We'll see...
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back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 12-12-2006, 02:50 PM
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How much boost are you running? If it's mild boost, then the W4CS would suit perfectly, but for higher boost (~1.4bar) applications, the colder W3 series is probably a better choice, with aftermarket ignition like MSD or Crane.
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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
Old 12-12-2006, 04:21 PM
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Where are you guys getting your plugs (for ones that the local auto parts places, etc do not carry)? Is there a place that has better deals on non stock plugs?
Old 12-12-2006, 04:36 PM
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Quote:
Originally posted by A930Rocket
Where are you guys getting your plugs (for ones that the local auto parts places, etc do not carry)? Is there a place that has better deals on non stock plugs?
I do know that the non-standard BOSCH W3CS or W4CS plugs are a special order only. No-one tends to carry stock that doesn't move very fast
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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
Old 12-12-2006, 05:32 PM
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Quote:
Originally posted by WydRyd
How much boost are you running? If it's mild boost, then the W4CS would suit perfectly, but for higher boost (~1.4bar) applications, the colder W3 series is probably a better choice, with aftermarket ignition like MSD or Crane.
I'm running .8 BAR with B&B headers.
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back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 12-12-2006, 05:47 PM
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Quote:
Originally posted by A930Rocket
Where are you guys getting your plugs (for ones that the local auto parts places, etc do not carry)? Is there a place that has better deals on non stock plugs?
I ordered mone from Pelican...I had some other things to order, too.
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back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 12-12-2006, 05:48 PM
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You've got it right about NGKs - low numbers are hot & high numbers are cold. I was guessing that my engine profile was most like a 993 (EFI/EDIS ignition). As far as I can tell the OEM NGK for the 1997 993 turbo is a "6" heat range. So I went one colder and am using a "7." So far they're the right color and I'm not getting pinging.


Quote:
Originally posted by sand_man
I think with NGKs as the numbers decrease the plugs get hotter...and with Bosch as the numbers increase the plugs get hotter...I THINK. So I think the NGKs that you are running are actually hotter than stock.

EDIT: or maybe I'm just talking out of my @ss and I've got this hot/cold thing all wrong!
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Old 12-14-2006, 12:04 PM
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Sand man, did you get the W4Cs's installed yet?
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Old 01-02-2007, 08:29 PM
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Quote:
Originally posted by mppickett
You've got it right about NGKs - low numbers are hot & high numbers are cold. I was guessing that my engine profile was most like a 993 (EFI/EDIS ignition). As far as I can tell the OEM NGK for the 1997 993 turbo is a "6" heat range. So I went one colder and am using a "7." So far they're the right color and I'm not getting pinging.
Mike, do you track your car or is it a street only car?
I was running NGK B8 and wonder if that is too cold. Mine is really a track only car though.
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Old 01-03-2007, 05:21 AM
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Bosch

FYI...this can be useful if you're trying to spec a plug;

Bosch specs...


NGK specs...
Old 01-03-2007, 08:22 AM
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Does anyone know what the OEM plug is for a completely stock street only 1979 row 930?
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Originally posted by randywebb
It is the people who have some kind of psychological problem and use the car (or some hierarchy they set up involving the cars) to try to elevate their personal sense of self-worth that irks me. I feel sorry for them of course, but they are difficult to put up with.
Old 01-03-2007, 08:41 AM
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Mine is a street only car. If you're not seeing fouling with the 8 on the track than it is certainly safer.

Quote:
Originally posted by hobieboy
Mike, do you track your car or is it a street only car?
I was running NGK B8 and wonder if that is too cold. Mine is really a track only car though.
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Old 01-03-2007, 03:59 PM
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Stock plug is the Bosch W3DPO on my euro '81
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
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Old 01-03-2007, 04:37 PM
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Quote:
Originally posted by NathanUK
Stock plug is the Bosch W3DPO on my euro '81
Thank you.
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1979 RoW 930
1999 BMW Z3

Quote:
Originally posted by randywebb
It is the people who have some kind of psychological problem and use the car (or some hierarchy they set up involving the cars) to try to elevate their personal sense of self-worth that irks me. I feel sorry for them of course, but they are difficult to put up with.
Old 01-04-2007, 05:11 AM
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Just picked up some new beaut BOSCH W4CS plugs for my car. What kind of plug gaps are you guys running with your EFI setups?

I'm still running the OEM Carrera ignition system, so I'm thinking perhaps 0.024" - 0.028".

Advice/suggestions?
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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
Old 01-08-2007, 03:10 PM
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I notice many folks are running the W4CS plug which is a non-projected plug vs the stock W3DP0. I see the same with NGK's were folks are running B8ES vs BP8ES. What's the thought behind this?
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Old 04-30-2007, 04:26 AM
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I'm now running a BOSCH 5 heat range in my car (FR5DTC) as I was experiencing excessive fouling with a 3 or 4 heat range in my daily driver. The 5's are performing very well. 993TT's use a 6 heat range (FR6DLC's)
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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
Old 05-01-2007, 01:37 PM
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I ordered some NGK iridiums from www.sparkplugs.com in an 8 heat range which corresponds to the Bosch 4 heat range. My plugs are very light so I don't want to go any hotter. I'm temped to go even colder, but I figure getting the thing to start may be a chore.

I never got a reply on the projected question, so I went with non-projected.
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Old 05-01-2007, 03:04 PM
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Talk about timing! I was just pulling the plugs last night and looking at what I had (Bosch W3DPO) and what I was thinking of trying (NGK BP8ES). I didn't actually go for the NGK's due to cheapness, but instead they seemed to be a recommended replacement plug for the 3.3t.

Now, after reading this thread... hmm. I'm also wondering about the different style of electrode between the NGK and Bosch - does the Bosch have an advantage in that regard, as well as being Platinum?

Do you guys bother cleaning your plugs and putting them back in, or always throw away? My W3DPO's have maybe 2000 miles on them max, but a little sooty (too cold?).

Quick car stats: B&B exhaust, K27-7200, Andial enrichment, stock WG, 1bar spring, modded Euro fuel distributor.

Cheers,
Rob.
Old 05-02-2007, 10:49 AM
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I change plugs way too often .

The W3DPO's are like a 9 heat range NGK so they're very cold. That's probably why they're so dark. A Bosch W8CS is like an 8 heat range NGK.
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Old 05-02-2007, 11:49 AM
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