Notices
C6 Corvette ZR1 & Z06 General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
Sponsored by:
Sponsored by: Kraken

[Z06] Installing inline thermostat for oil cooler

Thread Tools
 
Search this Thread
 
Old 01-25-2015, 08:33 PM
  #1  
jimbob8915
Burning Brakes
Thread Starter
 
jimbob8915's Avatar
 
Member Since: Apr 2011
Posts: 1,094
Received 91 Likes on 74 Posts

Default Installing inline thermostat for oil cooler

I have done some searches and posts and decided on an inline thermostat. I have tried to no prevail to find in my service manual and online what direction the oil flows out of the plate by the oil filter through the oil lines that go to the oil cooler. I am hoping not to have to cut the lines and bump the motor to find out.
Old 01-25-2015, 08:38 PM
  #2  
c5racr1
Melting Slicks
 
c5racr1's Avatar
 
Member Since: Feb 2000
Location: new orleans
Posts: 3,102
Received 462 Likes on 331 Posts

Default

Look at the line filter or katech adaptor, one of them has in and out on it
Old 01-25-2015, 09:45 PM
  #3  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

Or the one from improved racing...http://www.improvedracing.com/cooler...80f-p-209.html

Since this one is designed to bolt directly to the block, it would appear the hole closest towards the front bumper is the "out".
Old 01-25-2015, 10:28 PM
  #4  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

That is the thermostat I am considering. Has anyone posted a "how-to" covering exactly what's involved to adapt the stock lines (fittings, etc.)?
Old 01-25-2015, 10:42 PM
  #5  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

Originally Posted by bjmsam
That is the thermostat I am considering. Has anyone posted a "how-to" covering exactly what's involved to adapt the stock lines (fittings, etc.)?
I heard it wasnt easy or cheap, so I decided against it. This one with the 3/8" barbs may be best for a stock line install. http://www.improvedracing.com/thermo...65f-p-423.html

I just went ahead and decided to go with the GM ZR1 oil cooler setup. Have everything I need except for the ZR1 radiator. Trying to decide if I go that way or but the much cheaper "T" fitting and tie it into the radiator hose. The ZR1 rad is a nice piece, so I'll most likely go that route.
Old 01-25-2015, 10:49 PM
  #6  
jimbob8915
Burning Brakes
Thread Starter
 
jimbob8915's Avatar
 
Member Since: Apr 2011
Posts: 1,094
Received 91 Likes on 74 Posts

Default

What size is the I.D. of the factory oil cooler lines rubber section. 1/2" or 3/8" ? I would rather use a NPT threaded multi-barbed fitting then the ones supplied on http://www.improvedracing.com/cooler...80f-p-209.html I know some people are concerned about a barbed end with a hode clamp but even with my oil temps at 60F my oil pressure never exceeds 100PSI.

Last edited by jimbob8915; 01-25-2015 at 10:53 PM.
Old 01-26-2015, 09:16 AM
  #7  
double06
Melting Slicks
 
double06's Avatar
 
Member Since: May 2006
Location: Potomac MD
Posts: 3,328
Received 374 Likes on 299 Posts

Default Oil Line size

I think the rubber part is 1/2 ID since the metal part is 1/2 OD and I would assume it is pushed on and then clamped on. The ID of the steel line is about 7/16 of an inch.
Old 01-26-2015, 09:24 AM
  #8  
double06
Melting Slicks
 
double06's Avatar
 
Member Since: May 2006
Location: Potomac MD
Posts: 3,328
Received 374 Likes on 299 Posts

Default Hose Barb

The 3/8 hose barb may be a little small, you better check with them. The ID on the tube maybe like 5/16 on the barb part.
The following users liked this post:
MitchyBobby (01-30-2017)
Old 01-26-2015, 11:58 AM
  #9  
HOXXOH
Race Director
 
HOXXOH's Avatar
 
Member Since: Sep 2007
Location: Peoria/Phoenix AZ
Posts: 16,555
Received 2,061 Likes on 1,505 Posts
C6 of Year Finalist (performance mods) 2019

Default

Derale t-stats (under $60) use barbed fittings.
Mocal t-stats (about $100 more) use AN fittings
There are several brands in between.

Here's the oil flow direction for the LS2/3 block, which is the same for the LS7 except for the pump and pan portion to the dry sump.

Old 01-26-2015, 05:12 PM
  #10  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

Originally Posted by MTPZ06
I heard it wasnt easy or cheap, so I decided against it. This one with the 3/8" barbs may be best for a stock line install.

High-Flow Transmission Fluid Thermostat, 165F
That's disappointing considering the Low-Profile Oil Cooler Thermostat for LS Engines, 180F is designed for the LS block. 165°F is a bit on the low side...

Originally Posted by MTPZ06
I just went ahead and decided to go with the GM ZR1 oil cooler setup. Have everything I need except for the ZR1 radiator. Trying to decide if I go that way or but the much cheaper "T" fitting and tie it into the radiator hose. The ZR1 rad is a nice piece, so I'll most likely go that route.
I'm surprised that such a retrofit is more cost effective, and functionally, using the coolant to warm the oil makes more sense to me than using coolant to cool the oil (for circuit track applications)...
Old 01-26-2015, 06:36 PM
  #11  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

Originally Posted by bjmsam
That's disappointing considering the Low-Profile Oil Cooler Thermostat for LS Engines, 180F is designed for the LS block. 165°F is a bit on the low side...
That's just one of many examples they offer...they have other temps if you looked on the website.

Originally Posted by bjmsam
I'm surprised that such a retrofit is more cost effective, and functionally, using the coolant to warm the oil makes more sense to me than using coolant to cool the oil (for circuit track applications)...
After much deliberation, what it came down to for me was that I wanted oil temps to come up quicker, I wanted a better radiator, and I wanted to stick with genuine GM parts since I have a warranty and intend to extend it. So I've chosen to use all the ZR1 parts, including the radiator (also utilized on 2011+ Z06's). Definitely more expensive that the Dewitts and Z51 lines route...but again, I wanted GM parts for a reason.
Old 01-26-2015, 06:44 PM
  #12  
[Cerberus]
Instructor
 
[Cerberus]'s Avatar
 
Member Since: Dec 2013
Location: Berwick Me
Posts: 227
Received 12 Likes on 9 Posts
Default

Originally Posted by HOXXOH
Derale t-stats (under $60) use barbed fittings.
Mocal t-stats (about $100 more) use AN fittings
There are several brands in between.

Here's the oil flow direction for the LS2/3 block, which is the same for the LS7 except for the pump and pan portion to the dry sump.

Just a warning, the mocal sandwich plates Can have special fittings required, you need adapters to AN. This was the case on one I installed on a different car.
Old 01-26-2015, 07:22 PM
  #13  
Bill Dearborn
Tech Contributor
 
Bill Dearborn's Avatar
 
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
Posts: 40,089
Received 8,928 Likes on 5,333 Posts

Default

Look at the cooler. Hot oil goes in the top and cool oil comes out the bottom. Follow the lines back and you will have your answer about which line is the outlet on the block adapter.

Bill
Old 01-26-2015, 07:38 PM
  #14  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

Originally Posted by MTPZ06
That's just one of many examples they offer...they have other temps if you looked on the website.
I found no other examples with barbs, but perhaps JimBob's approach will pan out:
Originally Posted by jimbob8915
I would rather use a NPT threaded multi-barbed fitting than the ones supplied on Low-Profile Oil Cooler Thermostat for LS Engines, 180F. I know some people are concerned about a barbed end with a hose clamp but even with my oil temps at 60F my oil pressure never exceeds 100PSI.
Old 01-27-2015, 12:36 AM
  #15  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

Originally Posted by bjmsam
I found no other examples with barbs, but perhaps JimBob's approach will pan out:
Their 185* and 215* offer the 3/8 barb options as well, its just not pictured...but click on the fittings option drop down:

185 http://www.improvedracing.com/thermo...85f-p-212.html

215 http://www.improvedracing.com/thermo...15f-p-434.html

Old 01-27-2015, 07:39 AM
  #16  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

I just used the Contact Us page on the Improved Racing web site to ask the following question and will post the reply upon receipt in case others are interested:

Originally Posted by bjmsam
Why are hose barb fittings not listed as an option for the Low-Profile Oil Cooler Thermostat for LS Engines? Do you advise against their use? Are sizes other than 3/8" available? Thank you!
Would a worst case solution involve something other than two AN hose barb adapter fittings such as those available at Summit and JEGS?
Old 01-27-2015, 10:37 AM
  #17  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

This was our exchange:
Date: Tue, 27 Jan 2015 10:33:37 -0500
From: Michael @ Improved Racing

Jim,

We offer the barb fitting for use with transmission coolers, which often use 3/8" hose. For oil lines, you can use Push-lock hose ends if you like, however we don't recommend them. We have seem them back off under conditions of high temperature and pressure. If you do use them, you have to use clamps to ensure they don't back off.

I recommend using standard AN hose and fittings (-10AN is the recommended size). If you're not comfortable assembling the hose yourself, we also sell BMRS hose assemblies. You would just need to measure the length and fittings you need for each hose (they cannot be returned if the size is incorrect).

If you have any other questions, let me know.
Date: Tue, 27 Jan 2015 11:07:25 -0500
To: Michael @ Improved Racing

Michael,

Thank you for the prompt and informative reply. The C6 Z06 Factory LS7 Engine Oil Cooler Kit listed on your site is presumably what is on my stock 2007 Z06. Would you consider offering a kit that includes the appropriate lines, fittings and other miscellaneous parts for this application? It could potentially be quite popular, as discussion of such thermostats (including yours, specifically) invariably reveals confusion regarding proper installation, prompting many to pursue alternatives.
Date: Tue, 27 Jan 2015 12:36:57 -0500
From: Michael @ Improved Racing

Jim,

Yes, we do plan on putting a kit together for the C6 Corvette. However, I don't really have an estimate on when it will be available. We are looking at developing a new thermostat adapter with lines that exit out the bottom of the adapter, and we also need to source a C6 to develop and test fit the parts on. In addition, we are doing a lot of testing and development in oil coolers to find the best performing coolers. We have found Setrab coolers (which is available in the best size for the C6) to be the worst performing coolers on our test bench, so we are working on developing our own custom cooler for that vehicle.
Date: Tue, 27 Jan 2015 13:24:45 -0500
To: Michael @ Improved Racing

Michael,

I wish to retain the stock Z06 air-oil cooler, which is quite effective on the circuit yet too effective on the street, where oil temperatures struggle to reach even 160°F this time of year (for those of us significantly north of Orlando, anyway!). Owners who don't track their Z06 often block or permanently remove the stock air-oil cooler, while other owners retrofit the ZR1 water-oil cooler (which ironically warms the oil more effectively than cooling it), but I believe a thermostat is the best solution. Since you already sell and therefore have ready access to the stock Z06 air-oil cooler system, could you use its measurements to develop a thermostat installation kit for Z06 owners? Would you advise waiting for the new thermostat adapter with bottom lines?
Date: Tue, 27 Jan 2015 18:52:06 -0500
From: Michael @ Improved Racing

Jim,

To install a thermostat and keep the factory cooler, we would still have to replace the factory oil lines because they are all one piece with the factory oil adapter plate. We would also need to manufacture some custom fittings to connect standard AN lines to the factory cooler. That being the case I think it would make more sense to just sell a complete kit with an upgraded oil cooler as well.

The adapter with bottom lines is mostly for the Camaro and for engines where it's more practical to have the lines coming out the bottom. I think that might be the case with the C6 as well, but you can still use our current adapter no problem. We have a lot of customers using it.

Let me know if you have any other questions.

Last edited by bjmsam; 01-27-2015 at 07:08 PM. Reason: new Emails

Get notified of new replies

To Installing inline thermostat for oil cooler

Old 01-27-2015, 11:14 AM
  #18  
double06
Melting Slicks
 
double06's Avatar
 
Member Since: May 2006
Location: Potomac MD
Posts: 3,328
Received 374 Likes on 299 Posts

Default Hose size

I thought the 3/8 hose was too small for engine oil. Now I see it can also be used for a trans thermostat.
Old 01-28-2015, 04:18 PM
  #19  
Unreal
Team Owner
 
Unreal's Avatar
 
Member Since: Nov 2007
Location: Gilbert AZ
Posts: 24,035
Received 2,313 Likes on 1,793 Posts

Default

No need to manufacture parts to hook to factory cooler, those are available. I have used them. You can get the adapters with the same threads as the oil cooler on one side and -10 on the other.
Old 01-28-2015, 04:58 PM
  #20  
bjmsam
Pro
 
bjmsam's Avatar
 
Member Since: May 2014
Location: Mount Airy MD
Posts: 575
Received 38 Likes on 32 Posts
Default

That's good news. Can someone please post links to adapters that work? It's hard to determine from the manual what type of fittings are required for the stock cooler.


Quick Reply: [Z06] Installing inline thermostat for oil cooler



All times are GMT -4. The time now is 12:21 AM.