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e170drvr's Avatar
 
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Location: Evansville IN
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930 mods

Well I've decided to go ahead and do the mods for my 87 930 here's what I came up with, based on what I have heard on these boards. This is based on a stock 87 with the exception of an Andial IC that was installed by a previous owner. The car is in great condition 83000 miles compression and leakdown numbers are all good.
1. K27 of some description don't know which kind (need help with this one, the car will retain CIS and will not be tracked) K27HF "S" maybe?
2. B&B Headers with heat
3. 1 bar spring or should I stay with .8?
4. Monty muffler 75mm or 100mm?
5. LC1 AFR gauge.

Would appreciate any comments or thoughts on this setup, and what am I missing? I plan to order the parts in the next day or two

Last edited by e170drvr; 02-12-2007 at 03:24 PM..
Old 02-12-2007, 03:22 PM
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My shop recommends the K27 7200 for a good all around upgrade and good driveability. How about an adjustable WUR and RPM Solenoid from Brian Leask?

http://members.cox.net/930wur/
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Last edited by GaryR; 02-12-2007 at 03:33 PM..
Old 02-12-2007, 03:31 PM
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You can't go past the updated K27's for a pure drop-in upgrade and I think people have reported better gains with the FabSpeed mufflers.
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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 02-12-2007, 03:40 PM
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Me like track days
 
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AFR gauge is cute, (honestly, what use are the numbers flashing by at full throttle??), but what you really need is DATA LOGGING. I hope this is part of your plan if you bother with an AFR gauge.

For street fun you can't beat:
.8 bar
Decent IC
K27 HF
B&B or GHL with heat
Tested and confirmed injectors/CIS system - are they evenly flowing and is the system correctly functioning?

and go have some fun.

If you go beyond this - track use, or more power/higher boost be ready for more stuff. The above will get you started and you will not need to replace any of it for future "upgrades".
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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 02-12-2007, 06:19 PM
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Wur, Rpm solinoid, and I believe that S-Car-Go or somebody can modify the CIS block for more fuel. Euro fuel lines and block if not already done. If you dont mind a little fabrication; a small garret gt-35R ball-bearing would be fun and might be almost a direct drop-in provided that our flange is considered a t-3 flange. you may need to have the flange for the outlet side modded to accept the 35r and then you would need a $20 restricter jet for the oil feed for the turbo. I think this would be the to go as it would leave head room for future mods. A good intercooler is in order as well. Maybe a kokeln or an andial- If you could find a used C-2 turbo intercooler for cheap; Ive seen these work very well.
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Last edited by 930gt-40r; 02-12-2007 at 06:41 PM..
Old 02-12-2007, 06:34 PM
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The K27HS is the best K27 to go with, of course it is all the most expensive.
I would go for 1 bar if you are using it on the street for short bursts. The HFS will supply your IC with cooler air when producing the top end power than say the 7200.
As Craig said, go for the LM1 so you can record data with the XD16 gauge. They offer the DL32 for data logging.
If you are not happy with the AFR's then depending on where in the rpm/load the problem is you may need some fuelling mods as previously mentioned if adjusting the CO screw doesn't help.
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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

Last edited by NathanUK; 02-13-2007 at 01:59 AM..
Old 02-13-2007, 01:54 AM
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If you are thinking of bigger turbo, keep in mind the whole package.
Still I wouldn't be too scared of taking big enough. Even if everybody is saying about lack of torque in loewr gears, with right kind of set up there is not too much of worry about.

I have K27/32 turbo, but also lots of RUF Racing Stuff in it:
-B-group camsafts
-C-group cylinders and pistons
-RUF intercooler
-RSR-12plug ignition system
Of course there is 3 oil coolers in front, 3 gas-pumps etc.

pushing nice 580rwhpp and +600rwNm

Actually in this street legal car there is not too many things which are not modified.
FUlly Adjustable Fox Racing Shox suspension with 935 everything under, 350mm Big Reds, 1040kg kerb weight, full FIA-GT spec.
Full Strosek body (with self made front spoiler and side skirts), lexan windows.
The whole package is now in excellent balance.
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Last edited by petri; 02-13-2007 at 03:35 AM..
Old 02-13-2007, 03:17 AM
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Hey 170, let's hear how YOU plan to use the car. Track use? Street blasts?

This makes a huge difference as to what is actually a useful and apporpriate recommendation for a 930.
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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 02-13-2007, 06:09 AM
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Thank you guys for all the info. I have no desire to track the car at all. I just want a little extra oomph, to square away the pinhead in the Honda at the stoplight with the coffee can exhaust. I'm not thinking huge since I really like the car the way it is. I was hoping I could just keep it simple bolt on k27, headers, and muffler. I already have an Andial IC (don't know how effective it is) Don't really want to constantly be farting around with the CIS system. Don't get me wrong I enjoy tinkering with the car, but I am the type that will keep adjusting stuff until I drive myself crazy, spending more time adjusting than driving. So I would like to keep it simple, bolt it on, and drive and forget about it. Just mod it enough to keep it reliable and not destroy the engine with the mods. Just looking for the proven formula for "Cheap, works good, and lasts a long time" Thanks again guys.
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87 930 Coupe Red, K27S, Kokeln IC, Rarlyl8 Headers system, Tial 46MM, .9 Bar. "Lola"

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Last edited by e170drvr; 02-13-2007 at 10:17 AM..
Old 02-13-2007, 10:12 AM
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Then:

For street blasts & fun you can't beat:
.8 bar
K27 HF
B&B or GHL with heat
Tested and confirmed injectors/CIS system - are they evenly flowing and is the system correctly functioning?

IC will not get hot enough to warrant anything bigger, BTDT.

and enjoy.
__________________
- 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 02-13-2007, 10:35 AM
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Well, there you go. Thanks Craig
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87 930 Coupe Red, K27S, Kokeln IC, Rarlyl8 Headers system, Tial 46MM, .9 Bar. "Lola"

81 911SC Coupe Guards Red, Stock. "Zippy"
Old 02-13-2007, 11:06 AM
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If it's street only and you're not doing top speed runs, I'd feel safe bumping boost to 1.0 with the Andial intercooler.
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Old 02-13-2007, 11:45 AM
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Yes, I recommended 1 bar with the K27HFS as it will be street use only.
Possibly though, running only .8 bar the AFR might be flatter and therefore not need any fuel mods or tinkering other than the CO screw.
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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 02-13-2007, 12:32 PM
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.8 to 1.0 bar will result in about a 35-40 hp difference. Or about 12%-13%.
Make sure your timing is spot on and never give it crap gas - if you make this change.
__________________
- 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 02-13-2007, 06:20 PM
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