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Join Date: Jun 2003
Location: St Petersburg, FL
Posts: 3,814
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Which Cylinder Gets The Hottest . . .
I am hoping someone with some long term experience with the 911 motors, or even better 930s, could tell me which cylinder gets the hottest under WOT.
I am installing a combo CHT/EGT guage and am trying to decide which head I should put the sensor in. My guess is #2 (center left for those of you unfamiliar with the numbering system) to to the additional radiant heat that cylinder has to deal with. |
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06-24-2003, 06:23 PM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
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FWIW, I hear #3 (fwd left) is usually the first to cook when something goes awry.
(It is the furthest from the fan.)
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
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06-24-2003, 08:06 PM
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 56,139
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I have also heard #3, but then again I heard it here, so if we all heard it from one source and that source was wrong...
But it does make sense. 
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa  SOLD 2004 - gone but not forgotten
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06-24-2003, 09:37 PM
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Location: St Petersburg, FL
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Well, #3 would certainly be the easiest to tap for the probe unless someone has a differing opinion.
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06-25-2003, 03:07 AM
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Join Date: Jun 2001
Location: Sweden
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I heard front left is hottest, due to bad cooling...but it's somewhat balanced by the fact that OEM 930 intake is badly designed and flows more into center, so A/F isn't equal for all cylinders...
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Thank you for your time, |
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06-25-2003, 07:15 AM
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Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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Re: Which Cylinder Gets The Hottest . . .
Quote:
 
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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06-25-2003, 07:25 AM
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Join Date: Jun 2001
Location: Sweden
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hehe...that's cool but i think that mounting thermocouples in air-injection holes is even more slick
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Thank you for your time, |
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06-25-2003, 07:45 AM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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Quote:
I went with the pro act.. they do 1in. from the head for readings.. the SSI alows about 1 1/2in. .............Ron
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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06-25-2003, 08:05 AM
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I've heard the guys at Norwoods say #3 and #4 on a 930.
Those two cylinders are the most inline shot through the intake. Those two cylinders also seem to fail more offen. That's been the case on two of my race motors.
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"Never go faster than you can stop" 85 - 930 (750hp) Norwood motec 3.5 twin turbo |
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06-25-2003, 11:34 AM
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Join Date: Apr 2003
Location: Las Cruces, NM
Posts: 2,459
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You know, i never thought that teleporting was possible, to instantaneously go from one place to another. But after reading Amac's signature with two 930s , one being 750hp, i think scientists aren't studying the porsches close enough.
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2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix 
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06-25-2003, 12:09 PM
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1984 &1985 Porsche 930s & 930 (84) 3.6 (85) 3.5
