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Me like track days
 
Craig 930 RS's Avatar
 
Join Date: Sep 2003
Location: Kirkland, WA
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*Learn by asking questions and searching here and on Rennlist*

You need to know how this stuff 'works' before you go nuts with your wallet.....
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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 12-14-2006, 10:11 AM
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wcc wcc is offline
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Quote:
Originally posted by NathanUK
I wouldn't go for the blownsix intercooler yet as they have not been proved to work. Stephen can supply you with a B&B intercooler that he assures is excellent. It is a copy of the 964t type.

You missed headers out. Headers will give you quicker spooling of your turbo and also add approx 25bhp.

If you don't increase the boost pressure you won't need a better intercooler & can always fit one later when funds allow. If you do the headers later your turbo, muffler etc will have to all come off again.
That's interesting, cause I would have thought with a larger turbo I would NEED a larger intercooler to get the temps back down. Right now I only get .6BAR boost. I hit it every time, that's why I bought a .8 boost spring.

I wasn't really planning on replacing the headers, but since I'm taking it all apart anyways, it sounds like it would probably be a good idea to add it to the list.
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Old 12-14-2006, 11:09 AM
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Do any of you recommend sending your intake manifolds or the hot side of the turbos to Extrude Hone to have them polished? Then possibly to Swain for the ceramic coating? I've heard that the ceramic coating helps keep the heat down....can also be done on the exhaust manifolds and increases the flow efficiency. I saw the video clip from Extrude Hone and it looks like a great process that may have merit.
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1987 factory Slantnosed 930 Cabriolet/Guard's red
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Old 12-14-2006, 02:07 PM
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911Rudy:

I would be willing to rent your LM-1 unit to establish baseline A/F numbers on my stock 930. I am in Atlanta.
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Old 12-14-2006, 02:55 PM
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Bill, as I said earlier the K27HFS will produce less heat at the same boost pressure than the stock K26. If you are not on a budget then yes, get a B&B IC as well.

I really need to get a LM-1 and an adjustable WUR as I also have a modified fuel head from IA. More /$$$...
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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.
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Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

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Last edited by NathanUK; 12-14-2006 at 03:04 PM..
Old 12-14-2006, 03:00 PM
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wcc wcc is offline
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Yeah, I really don't have a budget. I know that's bad, but when I come up with an extra grand or so then I start looking around for a part. I'm not planning on installing anything until I have all the parts collected. Cause I don't want to take everything apart a bunch of times.

Too bad I don't have more set aside cause there is a B&B intercooler in the classifieds section, but it's too much considering I just picked up a new K27hf.

Back to intercoolers, I kinda got the impression from threads, used prices for OEM intercoolers, etc, that they were about useless. But you are saying that the are efficient enough to handle all the mods I've been talking about? So what would be the point of upgrading to a larger intercooler? Maybe I can skip it all together like you say.....
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Old 12-14-2006, 05:29 PM
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Intercoolers are free horsepower. They also allow you to run higher C/R or boost by cooling down the intake charge while easing the threat of detonation or engine knock.

The stock 930 intercooler (USA '78/9) will hold back a modded engine and not allow all the horses to run free. In my opinion a good aftermarket intercooler is the 2nd most important item to upgrade on a stock USA '78/9 930, the 1st item being the heat exchangers.

If you are going to mod your car in stages here is how I would do it:
#1 - Headers or Euro Heat Exchangers
#2 - Aftermarket Intercooler
#3 - Turbo
#4 - Cams
#5 - Higher Boost Spring (up to 1.0bar)
#6 - Go into the heads/engine and start over at #1
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 12-14-2006, 08:05 PM
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Intercooler improvements will never gain HP - they prevent the loss of HP.
A good rule to live by, FWTW.
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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 12-14-2006, 08:24 PM
  Pelican Parts Technical Article Directory    Reply With Quote #48 (permalink)
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"Intercooler improvements will never gain HP - they prevent the loss of HP"

Isn't that what I just said?

"The stock 930 intercooler (USA '78/9) will hold back a modded engine and not allow all the horses to run free."
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 12-15-2006, 05:34 AM
  Pelican Parts Technical Article Directory    Reply With Quote #49 (permalink)
wcc wcc is offline
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Quote:
Originally posted by RarlyL8
If you are going to mod your car in stages here is how I would do it:
#1 - Headers or Euro Heat Exchangers
#2 - Aftermarket Intercooler
#3 - Turbo
#4 - Cams
#5 - Higher Boost Spring (up to 1.0bar)
#6 - Go into the heads/engine and start over at #1
Looks Good. I wasn't to far off. I'm just buying stuff out of order, but that won't matter cause they'll all go on at the same time.

I didn't plan on #4 or #6 as of now, and 'm going to run a .8 spring instead of a 1bar.

Has anyone heard anything about these headers?
http://cgi.ebay.com/ebaymotors/Porsche-911-turbo-930-exhaust-headers_W0QQcmdZViewItemQQcategoryZ33631QQihZ006QQ itemZ160038627855QQrdZ1QQsspagenameZWD1V

Ebay Item #:160038627855
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Old 12-15-2006, 05:51 AM
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For short bursts of speed on the street, you might not be nearly as concerned with buying a larger IC than if you had, say, a local autobahn or track days in mind.

For your use, the turbo + headers and a good AFR may be enough.
And a pull fan under the stock IC is a good idea.

You live in Michigan.....get headers with heat
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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 12-17-2006, 09:39 AM
  Pelican Parts Technical Article Directory    Reply With Quote #51 (permalink)
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