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List of "must do" mods

Is there a list of "must do" mods for 79' 930? By must do mods, I mean things that prevent mechanical failure rather then increase performance. For instance are the cis airbox mod and cam tension upgrade applicable to this car? I just want to make sure everything is in tip top shape before I start reaching for 400hp
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1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 09-12-2007, 09:14 PM
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Make sure the cam tensioner upgrade is done. that is the first "safety" mod that should be done to our year 930. As for 400hp, don't hope to get there until you go to efi. CIS prevents us from getting to far over the 300hp mark.
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John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 09-12-2007, 09:48 PM
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Dont know if you would consider a Wide Band A/F sensor a mod but I think it is important that you monitor and or stay on the safe side of A/F mixture and a WB sensor is a good way to do it. Not to mention it is a good tool to tune your car.
Old 09-13-2007, 12:38 AM
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I think the above statement concerning the limits of CIS is a typo. There are several CIS 930s on this board that go over 400HP to the rear wheels.

Other than tensioners there is not much you need to do externally to your engine to protect it at that level. If you decide to go into the engine there are many things that can be upgraded but may not need to if 400 is your goal.

Keep your A/R ratios in check, don't over-rev, change the oil regularly, and keep the normal operating temp of the engine under 220* and she should live a long life.
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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 09-13-2007, 06:24 AM
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Quote:
Originally Posted by RarlyL8 View Post
I think the above statement concerning the limits of CIS is a typo. There are several CIS 930s on this board that go over 400HP to the rear wheels.

Other than tensioners there is not much you need to do externally to your engine to protect it at that level. If you decide to go into the engine there are many things that can be upgraded but may not need to if 400 is your goal.

Keep your A/R ratios in check, don't over-rev, change the oil regularly, and keep the normal operating temp of the engine under 220* and she should live a long life.

looking through all previous receipts and work orders i don't see anything of the tensioners. my pre buying inspection didn't say anything about it either. can I easily visually check this?
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Old 09-13-2007, 08:18 AM
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Yes. Look at the face of each cam cover. You should see a small diameter oil line that enters the cover using a banjo fitting.
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'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 09-13-2007, 09:54 AM
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Quote:
Originally Posted by RarlyL8 View Post
I think the above statement concerning the limits of CIS is a typo. There are several CIS 930s on this board that go over 400HP to the rear wheels.

Other than tensioners there is not much you need to do externally to your engine to protect it at that level. If you decide to go into the engine there are many things that can be upgraded but may not need to if 400 is your goal.

Keep your A/R ratios in check, don't over-rev, change the oil regularly, and keep the normal operating temp of the engine under 220* and she should live a long life.
Sorry about that, must of had to many glasses of wine last night. Its 500hp CIS limits isnt it?
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1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 09-13-2007, 11:12 AM
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Ok looking for the updated tensioners, I think I am looking in the right spot. Is that brass thing what I am looking for???
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Old 09-13-2007, 05:31 PM
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Old 09-13-2007, 05:49 PM
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Those look like pressure fed tensioners to me...
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Old 09-13-2007, 05:56 PM
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Is that good or bad?
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1979 930 Euro
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Old 09-13-2007, 06:31 PM
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In the words of Martha Stewart: "It's a good thing"

I think the old skool mechanical tensioners probably serve a purpose on a full blown race car, but for us street boys, this is the way to go.
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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 09-13-2007, 06:40 PM
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Well then, in the words of Cartman: "Sweet"
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Old 09-13-2007, 06:50 PM
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