Oil/intercooler shroud questions - LotusTalk - The Lotus Cars Community
 
LotusTalk.com is the premier Lotus Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-12-2013, 02:38 PM   #1 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
Question Oil/intercooler shroud questions

been running my home brew turbo setup for a while now and had initially planned on building proper shrouds for the intercooler (and oil cooler located left side vent). My question is whether or not it is even necessary. My fans are run in series so that they run quieter and at half speed. And with them, you'd think that they would direct incoming air where it needs to go. Before I added the roof vent I looked at wind tunnel photos and it seemed that air follows the roof line closely so It should be taking in a decent amount of air.

As far as materials, I was thinking thin gauge aluminum, carbon or a new rear window in plexiglass with plexiglass shroud integrated (stuck together with the clear adhesive they use to construct fish tanks).


after leaving them off for a while, finally decided to run coolant lines through the turbo. that put water temps up 5+ deg (188deg). In addition I switched to a single cooler setup and things get even hotter at idle (up to 200deg). So the oil cooler shroud is gonna get done but that doesn't remedy cooling at idle. Could run a thermostat & small variable speed fan on it? not sure if this is even a prob I need to worry about or not. I did lose some capacity with all those oil lines removed. Is simple fan cooling not a better option to a larger pan/ additional oil coolers? Or is there some other benefit?

while on the subject of oil. Running a oil filter relocation kit would offer a bit of convenience to changes, but I don't see them talked about or used much. A lot of German cars use top mounted filters, though those I've seen have been attached directly to the block.

also why your at it, what is the secret to happiness, the meaning of life and where do babies come?

m3trik is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-12-2013, 03:21 PM   #2 (permalink)
Registered User
 
jds62f's Avatar
 
Join Date: Jun 2006
Location: IL
Posts: 1,811
I think your question would be best answered by data? What are your air temps coming into the IC?
__________________
"Give a man a match, and he'll be warm for a minute, but set him on fire, and he'll be warm for the rest of his life."
jds62f is offline   Reply With Quote
Old 01-12-2013, 03:56 PM   #3 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
Quote:
Originally Posted by jds62f View Post
I think your question would be best answered by data? What are your air temps coming into the IC?
Maybe its time to pick up an intake air temp gauge. Seems like you could buy an additional sensor for it & run them pre and post intercooler. Just add a simple toggle switch to get both readings. That way I could also see if adding a switch or thermostat to run the fans at full speed in some circumstances would provide any benefit. Good advice. -thanks
m3trik is offline   Reply With Quote
Old 01-14-2013, 08:31 AM   #4 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
as it turns out, you can buy gauges with dual air temp readouts. so I ended up just picking up one of those.
m3trik is offline   Reply With Quote
Old 01-25-2013, 09:36 AM   #5 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
There goes the last of my A/C vents on the drivers side... at least my passenger will be comfortable.

m3trik is offline   Reply With Quote
Old 01-25-2013, 09:58 AM   #6 (permalink)
Registered User
 
Apex_in_sno's Avatar
 
Join Date: Mar 2008
Location: Bothell, WA
Posts: 846
Quote:
Originally Posted by m3trik View Post
been running my home brew turbo setup for a while now and had initially planned on building proper shrouds for the intercooler (and oil cooler located left side vent). My question is whether or not it is even necessary. My fans are run in series so that they run quieter and at half speed. And with them, you'd think that they would direct incoming air where it needs to go. Before I added the roof vent I looked at wind tunnel photos and it seemed that air follows the roof line closely so It should be taking in a decent amount of air.

As far as materials, I was thinking thin gauge aluminum, carbon or a new rear window in plexiglass with plexiglass shroud integrated (stuck together with the clear adhesive they use to construct fish tanks).


after leaving them off for a while, finally decided to run coolant lines through the turbo. that put water temps up 5+ deg (188deg). In addition I switched to a single cooler setup and things get even hotter at idle (up to 200deg). So the oil cooler shroud is gonna get done but that doesn't remedy cooling at idle. Could run a thermostat & small variable speed fan on it? not sure if this is even a prob I need to worry about or not. I did lose some capacity with all those oil lines removed. Is simple fan cooling not a better option to a larger pan/ additional oil coolers? Or is there some other benefit?

while on the subject of oil. Running a oil filter relocation kit would offer a bit of convenience to changes, but I don't see them talked about or used much. A lot of German cars use top mounted filters, though those I've seen have been attached directly to the block.

also why your at it, what is the secret to happiness, the meaning of life and where do babies come?
On the topic of remote oil filters...
Yet another laminova, this with remote filter...
__________________
VFII, Eliseparts Sequential, Geartronics Paddle shift.
You name it, I've probably got that installed too...
1864lbs, full tank
Otherwise, it's bone stock....
Apex_in_sno is offline   Reply With Quote
Old 01-25-2013, 11:15 AM   #7 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
Quote:
Originally Posted by Apex_in_sno View Post
On the topic of remote oil filters...
Yet another laminova, this with remote filter...
Thanks. I recently dumped a ton of oil due to my push on hose and clamp sliding off my cooler, caught it just in time. So the whole setup sounds like a plan to me.
m3trik is offline   Reply With Quote
Old 01-25-2013, 01:37 PM   #8 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
sent me a single temp gauge by mistake so I'm making that work for now.
here it is off to the left. Will installing my temp sensors in the intercooler fins (near the exit) be accurate enough or do I need to tap into my boost tubes?

m3trik is offline   Reply With Quote
Old 01-25-2013, 02:49 PM   #9 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
frequent flyer miles....

m3trik is offline   Reply With Quote
Old 01-25-2013, 03:40 PM   #10 (permalink)
Registered User
 
Join Date: Jan 2012
Location: Fremont CA
Posts: 153
A thermocouple directly before the intercooler and one after the intercooler would be the most direct way to measure intercooler efficiency.

Look into the Adrian Newey designed intercooler setup on the GT3 cars for inspiration if you are thinking about redoing the rear end to provide ducted air through the intercooler.
__________________
Mike
Automotive Engineer
2006 Chili Red Elise #0005
Schumi is offline   Reply With Quote
Old 01-26-2013, 07:32 AM   #11 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
Quote:
Originally Posted by Schumi View Post
A thermocouple directly before the intercooler and one after the intercooler would be the most direct way to measure intercooler efficiency.

Look into the Adrian Newey designed intercooler setup on the GT3 cars for inspiration if you are thinking about redoing the rear end to provide ducted air through the intercooler.
Yeah I've seen that one before. Pretty crazy setup.

Picked up a pair of thermocouples. I'm gonna look into a variable fan speed controller. I use one on my bmw for the radiator fans, I'll have to see if it works in low temp ranges.
m3trik is offline   Reply With Quote
Old 01-26-2013, 09:05 AM   #12 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 6,385
I have some photos of the Newey car setup somewhere... I'm told that the windshield was shaved a bit to allow the roof duct to have greater cross-sectional area. My saliva (and quite possibly other bodily fluids) are definitely all over that car.

Here are a couple that I took:
Attached Images
  
__________________
You can contact me directly: ReallyLightStuff << a t >> gmail << d o t >> com

Last edited by Thomasio; 01-26-2013 at 09:26 AM.
Thomasio is offline   Reply With Quote
Old 02-02-2013, 10:30 AM   #13 (permalink)
Registered User
 
Join Date: Feb 2010
Location: Atlanta, GA
Posts: 80
The vacuum line on the throttle body that a lot of people just plug on the turbo cars seems to be a great spot for a thermocouple. Got to clean up the wiring, but you get the idea.
After I was able to read the temps I came to what seems like the now obvious conclusion. The intercooler/ intake setup is efficient (1 or 2 deg above ambient) at speed but in stop and go those fans are sucking in primarily engine heat. So I'm pulling the back glass and building a mold for a carbon shroud.

- Thanks to all those who set me in the right direction.

m3trik is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Lotus Elise



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 01:10 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.