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Porsche-Poor
 
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930 advice

Hello 930 brethren, seeking advice on some performance mods for my 1983 930, it's a 3.3 and only engine mods are the SC cams, has the euro headers and running a Monty dual out muffler. I understand that the combination of after market headers, larger turbo and intercooler is the way to go but not cheap. If I wanted to piece into this, what is the best way to go to reduce some turbo lag and get more low end power? Thanks in advance for any input.
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1979 911 RS clone hotrod
1983 930 turbo-sold, will be missed
1992 964 C2 Coupe-regrettably sold
1980 911 SC Weissach-regrettably sold
1975 911S-sold but not forgotten
Old 11-28-2006, 09:42 PM
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Automotive Monomaniac
 
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How long have you had the car? Where are you going to use the power (track, street, etc...)?
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1986 - 930 Coupe / 2016 - BMW X5 xDrive35i / 2015 - Volkswagen Golf TDI 6MT

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Old 11-28-2006, 10:27 PM
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Porsche-Poor
 
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had it about a year, will do approx 6 track days a year and mostly weekend use on the street
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1979 911 RS clone hotrod
1983 930 turbo-sold, will be missed
1992 964 C2 Coupe-regrettably sold
1980 911 SC Weissach-regrettably sold
1975 911S-sold but not forgotten
Old 11-29-2006, 07:12 AM
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Automotive Monomaniac
 
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I'm no expert (others will chime in here), but one of the best ways to reduce lag (that you seem to have already addressed) is with SC cams, headers, and exhaust...

Do you have a stock turbo?
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1986 - 930 Coupe / 2016 - BMW X5 xDrive35i / 2015 - Volkswagen Golf TDI 6MT

Director of Automotive Insights at Kelley Blue Book / Forbes automotive contributor
Old 11-29-2006, 07:23 AM
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Porsche-Poor
 
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yes, it was recently rebuilt so hard at this point to justify going to a K27 or whatever. . .
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1979 911 RS clone hotrod
1983 930 turbo-sold, will be missed
1992 964 C2 Coupe-regrettably sold
1980 911 SC Weissach-regrettably sold
1975 911S-sold but not forgotten
Old 11-29-2006, 07:59 AM
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Unfortunately a new turbo will lower boost (EDIT: opps, I meant lag) more than other mods. Don't look for a miracle though, these are big turbos with the inherent lag.

One thing that might help a little is a boost controller. It would prevent boost creep where the wastegate starts opening before it's reached full boost pressure.
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2014 Cayman S
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Last edited by David; 11-29-2006 at 01:38 PM..
Old 11-29-2006, 11:20 AM
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Sorry to say, but the original turbocharger is a lag monster and the only way to effectively reduce "lag" is to install a nice set of headers with a more modern turbocharger. Whether you go for a newer K27-7200/HF-S, or Garrett Ball-bearing depends on your budget. There is NO substitute for the newer turbos

Also recommend upgrading that OEM intercooler too. It really isn't very efficient
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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 11-29-2006, 01:27 PM
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Depth of wallet = How fast you want to go
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Old 11-29-2006, 01:35 PM
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If you are on a budget, get the headers first, they are shorter than stock and reduce turbo lag.
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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.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 11-29-2006, 01:41 PM
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If you don't need heat these headers might be a good place to start. Sell your 3LDZ and pick up a high flow k27. Add a larger intercooler and you can add a 1 bar spring. Most of this stuff can be found used in good condition here on the pelican board as everyone seems to be continually upgrading their cars.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=300055163673&fromMakeTrack=true
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82 930 Pearl White 3.3 964 cams, K27 HF, Kokeln, fuel enriched, IA fuel head mod, wur mod, crankfire, 2X plug, Aase worked heads. 1bar, GHL, zork, 23/33 bars, low, loud
Old 11-29-2006, 01:52 PM
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Quote:
Originally posted by slyguy
If you don't need heat these headers might be a good place to start. Sell your 3LDZ and pick up a high flow k27. Add a larger intercooler and you can add a 1 bar spring. Most of this stuff can be found used in good condition here on the pelican board as everyone seems to be continually upgrading their cars.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=300055163673&fromMakeTrack=true
Agree! These are the Schnell/GoingSuperFast headers. Exactly the type I have and they are pretty good. Time will tell how well they hold up, but I don't care what anyone says, ALL headers will eventually develop hairline cracks. It's just a matter of time and how hard you drive your car. For their price, I think they're a no brainer. They made a HUGE difference on my car, especially with the GT35R
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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 11-29-2006, 02:01 PM
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Me like track days
 
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Coats -

You are in my area, look me up and give me a call if you want.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-29-2006, 02:19 PM
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There's a K27HF for sale on rennlist 930 forum, that might still be available.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 11-29-2006, 04:22 PM
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Porsche-Poor
 
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Thanks you guys, really appreciate this input, I'm just going to go "all-in" and do it right i thing, Craig911, I've met you at the track a couple times, will give you shout, I pinged you before i pulled the trigger on my 930, you been out to the track yet with your new set up?
__________________
1979 911 RS clone hotrod
1983 930 turbo-sold, will be missed
1992 964 C2 Coupe-regrettably sold
1980 911 SC Weissach-regrettably sold
1975 911S-sold but not forgotten
Old 11-29-2006, 05:08 PM
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OFF THE BOOST PIPE NOW...
 
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Someone looked into it, but he wants a check. Nor Paypal, etc.

Quote:
Originally posted by 125shifter
There's a K27HF for sale on rennlist 930 forum, that might still be available.
Old 11-29-2006, 06:15 PM
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Me like track days
 
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Oh yeah - I thought I recalled the name!
Been on track 2X, tweaking/tuning is a must before I head out again.

I'd be glad to help since I've been throught this.

A thought to put in your mind - just a brief & cursory overview:
K27HF
Adjustable WUR
B&B headers
965 Blowsix or Kokeln (easy to install) IC

Love to help ya spend your go fast money
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-29-2006, 06:34 PM
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