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Join Date: Jan 2009
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930 hp

Just wondering if anyone has a rough idea what they think my 930 would be HP wise. Havent had it very long and only drove it a couple times but seems pretty fast to me, but I drive an older Honda Accord daily.
Twin plugs, K27 , Kokeln intercooler, pretty trick looking muffler and headers and probably all the rest that I dont really know enough about.
Thanks guys,I'll post some pics when I have a little time.
Old 04-07-2010, 08:23 PM
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Crotchety Old Bastard
 
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'86 US or Euro?
Which K27?
Stock Boost?
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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 04-08-2010, 05:07 AM
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In the past, typically built 930's running 1 bar w larger turbo, exhaust, intercooler, SC cams... made about 400 to 425 chp.

There are variables.

Please consider getting in on a dyno and have them monitor your Air Fuel Ratio curve. If the fuel side has not been worked to match you could have a lean condition in the upper rpm's that can hurt a motor.

Cost is about $100 to $150.
Old 04-08-2010, 08:05 AM
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Thanks.It has Andial enrichment stuff, so I guess that covers the lean problem at revs.I think the turbo is a 7200
Old 04-08-2010, 03:56 PM
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Really need specific info to give any kind of meaningful expectation of power level.
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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 04-08-2010, 07:29 PM
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Intercooler, exhaust, twin plugs, fueler, K27-7200. You have a great build.

We do not know if you have ports or cams. That might make for a 10-20hp swing if you had a larger turbo.

Most that do such a build run a 1 bar boost spring. With the goodies you have there is no principle difference between the US and Euro.

The K27-7200 is a great quick spool turbo but it sets your limit to about 330- to 360rwhp or say 390 to 425 chp if you are lucky with CIS.

If you go to a larger turbo there is another 20-30 or so HP to be had but then how much fuel your system can put out, even with the Andial will become your limiting factor. The Andial can only add about 10% more gross fuel over stock and take you to about 450chp.

Dyno is the only way to know what your HP is for sure and they even vary.


Fitting an MSD RPM switch in line with the boost pressure Hobb's switch on the Andial fueler can help get rid of the probably fat air fuel ratio that often comes with such a system in the mid range and make for a noticeable improvement.

Again, given your turbo if it is a 7200, you are probably a solid 400chp car.

If someone went to the effort to twin plug and add all the other goodies I would be surprised if you do not have cams and ports.

Add one of Brian's larger capacity turbo's and you should have a solid 450hp car and if you can get enough fuel maybe, maybe up to 500chp with the right tuning.

Last edited by 911st; 04-09-2010 at 06:41 AM..
Old 04-08-2010, 08:59 PM
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Thanks for the great info 911ST.Very interesting and informative.When I can I'll post pics and try to show all the goodies so you guys can tell me exactly what I've got.
Old 04-09-2010, 12:59 PM
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cool, welcome to the sickness. pics are a must!!!!!!!!!!!!!!!!!
Old 04-09-2010, 01:23 PM
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