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Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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11-20-2005, 10:19 AM
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Join Date: Jul 2005
Location: Reno, NV
Posts: 5,941
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'78 930 Engine
3.3L SC Cams Euro Exhaust B&B Intercooler K27-7200 Turbo Modded Stock Muffler 0.7 bar WasteGate w/ Dump (formerly 1.0 bar) Stock bare-bones CIS tuned to 3% CO ROW Dizzy 915 Tranny Hey Rarely,, I just bought the almost exact set up as you have.. what do you think you're putting out for HP??
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"Todd" 98 Tahoe ,2007 Saturn Vue 86 930 black and stock, 80 930 blue tracdog 91 Spec Miata (yeah I race a chick car) "life"ll kill ya" Warren Zevon |
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11-20-2005, 10:48 AM
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Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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RarlyL8:
No they weren't. Sadly they cost as much as new SSI's, but I'm thinking the short primaries might help. I'm going to try something different than the 930 route. I was planning the Protomotive 3.2 route before Merv had issues with his engine. Since that went south I was thinking of ways that I could build something to my own taste and criteria. I'm looking at using modern GT20/GT25 turbos in a pair with I/C blowing into a Carrera intake. I don't know about DME or aftermarket ECU. I don't know low impedence or high. I haven't decided on several issues. Initiallly it looks like I'm getting a very fresh 9.3:1 engine. Regretfully its Alusil so I can't just drop a set of JE's in her. I eventually will probably either use some base shims to get her to 9:1 and or new P&C's. Might depend on where the deck height currently is set at and how much I can work with it. PROBLEM: I will have to find a new home for my 2.7 MFI engine  someday. After I recover from this build up and finishing my low 9 sec drag car which is getting there. The sickness never ends.
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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11-20-2005, 11:52 AM
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Crotchety Old Bastard
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9 - I've never had my engine on a dyno. The car runs mid-8s @90mph in the 1/8th which calculates just shy of 400hp.
Luke - you've busted open that piggy bank I see. I doubt Terre Haute is ready for a beast like that! 
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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 |
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11-20-2005, 02:54 PM
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Join Date: Feb 2002
Location: Atlanta, GA
Posts: 933
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Great thread.
I just had my K27 7200 "tweaked" - cost almost 1.5 times the cost of the original turbo. But it comes on like a freight train and hits maximum boost by 3800 rpm - on a dyno you can see a slight dip in power/torque as the wastegate opens just shy of 1 bar. One thing I'd add is the merits of a strong five speed tranny. The gear spread is such that you can keep the revs in the sweet spot for the turbo which is IMHO more important than reducing turbo lag. Well, maybe not more important, but just as important. Like Rarly I'm not into super high HP (apparently I'm at the limits of what my cabriolet can take safely) since I, as the driver, tend to back off long before the car is ready too. But that acceleration - ahhhh!
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C.H. Boost Addiction - honestly, I have it under control 1989 911 Turbo Cabriolet Mods include: Kokeln IC, GHL Headers, Hooligan muffler, Modified K27 7200, BL WUR, LC-1 & XD-16, Bilstein Sports (4), TRG sway bars, Oversize torsion bars, Strut brace |
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11-21-2005, 11:38 AM
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Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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Anyone here messed with ITB's with their turbos? How much benefit do you think it really presents? I know the theory, but in reality what have people found? I know in the Mustang group (say what you want, they know boost too), they usually continue running a common plenum into serious 1000+ hp range.
Thoughts? I'm just concerned about the difficulty of IC with ITB's. I decided to go with GT20's which have T25 flanges yet should spool quite a bit quicker. Wow, the 993TT headers are really light and small, after receiving them in the mail yesterday.
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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12-07-2005, 07:33 PM
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Join Date: Mar 2002
Posts: 3,563
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Nice, post some pics of the headers Luke! Will u need to relocate that oil tank to fit the turbo on the side?
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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 
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12-07-2005, 07:45 PM
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Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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Nope Merv, no need to move the oil tank. I've got a 72!
Sadly I might have to remove that A/C part in the rear quarter that probably hasn't worked for a decade I haven't received the turbos yet so I don't have a full grasp of space issues. They are certainly smaller than yours and you got her in there. Did you ever get the 3.2 running well again, Merv?
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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12-08-2005, 05:24 PM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
