Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
I've gone native
 
Tt surgeon's Avatar
 
Join Date: Sep 2011
Location: Long Island, NY
Posts: 1,625
Hot IC

Lately, I've been driving my car alot in the hot weather, ac cranking. I've noticed the IC is very hot to touch, the car is not overheating, never close to the red on the gauge.
AFRs 14.7 at idle, too lean?
normal?
Tia
c
Old 07-03-2012, 07:46 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Registered User
 
Ronnie's.930's Avatar
 
Join Date: Nov 2007
Location: Rockwall, Texas
Posts: 5,012
I believe that is normal in hot weather. I could fry an egg on my intercooler here in Texas during the summer. One day, I will add a water/meth injection system like Cole and JFairman have done as the hot intake charge bothers me . . .

Last edited by Ronnie's.930; 07-03-2012 at 08:11 PM..
Old 07-03-2012, 07:53 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
Registered User
 
mark houghton's Avatar
 
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,189
14.7 (stoichiometric) will of course yield the most complete burn, but as you probably know most 930's idle a bit better with a richer mixture. A lot depends on your build and overall state of tune. 14.7 at idle shouldn't be concern for damage, if that's what you're thinking (personally, I would shoot for something closer to 13.7-14.0). More important is where it's at when cruising and/or on boost.

Make sure that your IC is well sealed to the deck, so as much air as possible is drawn through it...rather than around it, and that your engine tin(s) and perimeter seal are all fitting properly. That's about all you can do to maximize air cooling.

One other solution is to not drive the car when it's hot outside :-) ,but what fun would that be?
__________________
Mark H. 1987 930, GP White, Wevo shifter, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 07-04-2012, 04:59 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Certified User
 
billjam's Avatar
 
Join Date: Aug 2007
Location: Perth, Western Australia
Posts: 1,748
Garage
Quote:
Originally Posted by mark houghton View Post
Make sure that your IC is well sealed to the deck, so as much air as possible is drawn through it...rather than around it, and that your engine tin(s) and perimeter seal are all fitting properly. That's about all you can do to maximize air cooling.
It's simple really - you just need more air through it.

DRIVE FASTER
__________________
Bill
1988 Carrera - 3.6 engine (with ITBs, COPs, MS3X) and a whole set of turbo body panels waiting in the attic.
Day job ... www.sspowdercoat.com.au
Memories: '68 912, '72 911T, '80 911SC, '84 911, '85 930, '86 930, '87 911
Old 07-04-2012, 05:52 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
Smart quod bastardus
 
fredmeister's Avatar
 
Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,103
Garage
Its a little misleading to feel th eintercooler while the car is idling because it gets no air flow across it and starts to heat soak.
Try pulling over after driving for a while and feel the intercooler before it has time to idle much. This should give a better indication of its function. You should feel a big differnce between the inlet side housing and the outlet side of the intercooler, this would indicate your temp differential across it.
I found once it idles for a few minutes the whole intercooler gets hot at both ends. it really needs airflow across it to work properly.
__________________
1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, k27S turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),stock 4spd tranny
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 07-04-2012, 07:13 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
Smart quod bastardus
 
fredmeister's Avatar
 
Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,103
Garage
Quote:
Originally Posted by Ronnie's.930 View Post
I believe that is normal in hot weather. I could fry an egg on my intercooler here in Texas during the summer. One day, I will add a water/meth injection system like Cole and JFairman have done as the hot intake charge bothers me . . .
I have one installed as well and it was a great investment.
It only adds to the cooling capacity and is extra insurance against causing detonation damage. Especially if you track the car and are into the boost for extended periods of time.

Fred
__________________
1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, k27S turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),stock 4spd tranny
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 07-04-2012, 07:16 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #6 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Registered User
 
Join Date: Jul 2003
Location: Back in B'ham, AL
Posts: 3,103
Those symptons appear normal. It's a matter of heat transfer; the hotter ambient air the hotter it gets - air cooled!
Old 07-04-2012, 07:22 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #7 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 11,389
Garage
My intercooler is rarely too hot to touch when the engine is running. A proper shroud insures air is always being pulled though the intercooler, even at idle. (My stock replacement IC uses the OEM shroud). Efficiency and time on boost will determine how hot it gets and how long it takes to cool back down.
Check for air leaks in your engine compartment, all the air needs to come in from the wing to optimise IC and engine cooling.
__________________
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 07-04-2012, 07:30 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #8 (permalink)
I've gone native
 
Tt surgeon's Avatar
 
Join Date: Sep 2011
Location: Long Island, NY
Posts: 1,625
I think it's a "hot outside" issue.
The Andial IC is well sealed with the Andial shroud.
Thanx all
Old 07-04-2012, 10:38 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Aug 2010
Location: Socal
Posts: 4
Some speed shops and race teams use heat strips that are applied to engine parts. They turn different colors indicating the highest temp achieved. That might be a way to monitor the temps although you'd have to do it over a period of time to get any feel for what's "normal".
Old 07-05-2012, 07:09 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 5,841
Sell the little Garretson and get a full bay intercooler if you need consistant cooler intake air during summer.
WMI is cool and fun if you're a gadget freak but a big intercooler is much cooler, much more effective, and always works.

Quote:
Originally Posted by Tt surgeon View Post
I think it's a "hot outside" issue.
The Andial IC is well sealed with the Andial shroud.
Thanx all
Old 07-05-2012, 07:35 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #11 (permalink)
I've gone native
 
Tt surgeon's Avatar
 
Join Date: Sep 2011
Location: Long Island, NY
Posts: 1,625
Prolly the ultimate solution, but a little more that I want to undertake.
__________________
1988 930 Dark Blue/Gray
Old 07-05-2012, 08:58 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #12 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 4,214
I have a full-bay intercooler on mine. MegaSquirt (well, TunerStudio) is telling me that on a 100 degree day, the IC is running around 100-106 after 30 minutes of highway driving/no boost - ok, maybe a little here and there.

Hit a few stop lights and the temps climb to the latter end.

What was nice to know after installing MegaSquirt is after running through the gears with 1-bar of boost, the max temps I have seen now twice has been 114 degrees.

That is ice cold compared to roots and centrifugal superchargers I have ran on prior American iron.

Not too bad. This is with oil temp needle pointing dead left between the 2 large hash marks I should add.
__________________
Cory - '87 C3.2 (3.4, stock 3.2 heads, cams, intake/TB) Guards/Blk - turbos new to old 1). Borg Warner S366 (66mm comp/73mm turb/0.91 T4 divided ~1+ bar), 2). Holset HX40 8-blade (58mm/"P" trim 0.84 T4 divided 1.4 bar), 1/4 mile 12.02 @ 129 MPH (street tires), 3). Turbonetics 60-1 HiFi (60mm/"P" trim 0.81 A/R T4 open 1+ bar), 431whp - MegaSquirt II/EDIS ignition/80lb inj
Old 07-05-2012, 09:39 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #13 (permalink)
Old 07-05-2012, 09:39 AM
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 



All times are GMT -8. The time now is 12:36 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.