Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #11  
Old 03-09-2007, 05:11 AM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 10,137
Thanks: 2,659
Thanked 3,813 Times in 993 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Sam,
Go ahead and post it. The doc is too large for me to post here and my home software cannot reduce it.
Rick
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #12  
Old 03-09-2007, 06:44 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 10,137
Thanks: 2,659
Thanked 3,813 Times in 993 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

I got it reduced. Hopefully you can read it.
Rick
Attached Images
 
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #13  
Old 03-09-2007, 06:55 PM
mockingbird812's Avatar
mockingbird812 mockingbird812 is offline
Yenko Contributing Member
 
Join Date: Jun 2004
Location: Dayton
Posts: 14,391
Thanks: 897
Thanked 789 Times in 474 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Rick - a tad hard to make out. I will cut and paste what you sent me - hopefully. Good stuff.
__________________
Sam...

Reply With Quote
  #14  
Old 03-09-2007, 10:33 PM
mockingbird812's Avatar
mockingbird812 mockingbird812 is offline
Yenko Contributing Member
 
Join Date: Jun 2004
Location: Dayton
Posts: 14,391
Thanks: 897
Thanked 789 Times in 474 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Here is the info that Rick provided:

Oil Cooler

An oil cooler can be connected through hoses to the high-perf blocks by removing the plugs above the oil filter pad. You have a choice of what to install in the rear hole. Either plug the hole as the professional racing engine builders do, or follow Chevrolet's published "safe" recommendation and install a six-cylinder oil-filter by-pass valve 5575416. Either will cause oil to flow through the cooler, but the plug will ensure that all oil goes through the filter instead of straight to the engine.

If you use the bypass, oil temperature may not be reduced by your cooler because the oil may choose the path of least resistance and take the "shortcut" into the engine via the bypass. When installing your oil-cooler plumbing, keep all of the hoses at least 1/2-inch ID and avoid elbows or reducing fittings wherever possible. One 90° elbow is equivalent to 10 feet of pipe of the same diameter—so you can see how elbows can restrict the flow. Small hose also restricts flow through the cooler. Keep the hoses short. Use hoses designed for hot-oil service. They must be specified for long life at temperatures to 350°F or so. Aero-Quip steel-braid-covered hose is possibly the best you can buy for remote oil cooler or dry-sump plumbing. This hose or non-sheathed hose for oil service can be found at firms specializing in truck or aircraft parts. The oil-cooler hoses should be filled as they are installed. Or, if this is not possible, the pump must be turned with an electric drill until the entire system is filled. Failure to do this could cause bearing damage because the engine will have to turn over a lot of times before the bearings get pressure.

A big Harrison cooler, 3157804, is listed in the heavy-duty parts list. But it is not ready to use as it comes out of the box. You'll have to take it to a heliarc expert to get it cut apart and modified so that the oil flows into one end of the cooler and out the other.

Low-restriction coolers with the inlet/outlet on opposite ends are available readymade, so unless you get your heliarc work done dirt-cheap, you may want to start off with a non-GM part that needs no modification. A Boss Ford cooler made by Karmazin Products is one possibility, Ford P/N C90Z-6A642-A with mounting brackets C9ZZ-6B633-A and C9ZZ-6B634-A. The brackets are an absolute necessity, so don't overlook these rubber-shockmounted pieces when you place your order. The cooler is all-steel, so it weighs a bit more than the Harrison. It is 7" tall, 15.6 inches wide and about 2" thick. Ford high-performance engineer Jeff Quick told us that the cooler can be relied upon for about a 30°F temperature drop between the inlet and outlet, depending on inlet temperature, of course. He also cautioned us that the cooler should be mounted where it gets fresh air ducted to it with a free opening behind the fins. The cooler cannot be expected to work if it is mounted against a flat surface—or immediately ahead of the stock radiator. Either type of mounting will impede the flow of air through the cooler, which is what's essential in this instance. Mount the cooler so that it is out of the way of rocks and dirt which could clog the fins and reduce the unit's cooling capabilities.

Lest the over-$100 price of either the Harrison or Karmazin cooler tempt you to try to use an automotive heater radiator core for a cooler, let us assure you that such items are not designed to withstand oil-pump pressure. The pressures developed in cooling systems are far less than those in an oil system.

A lot of air-conditioning evaporators are seeing racecar duty as oil coolers. They are available in a wide variety of sizes and shapes and they're reasonably priced in a scrap yard. Select one with a tube diameter of close to half inch and have fittings heliarced on to accept the oil lines. Have the unit'pressure checked. As a rule, an evaporator will withstand more than 100 PSI which is adequate for cooling big-block oil.

A common mistake when modifying an oiling system on a high-performance engine is over-cooling the oil. Oil should be kept at about 200°F to flow properly. Oil temperature should be measured where the oil comes back to the engine from the cooler. However, it is important to install the temperature sender so that it does not restrict oil flow in any way. A temperature range of 180 to 230°F is normal. Oil temperature should never exceed 230°F-but often will, regardless of how hard you try to keep it at a cooler temperature. Chevy suggests that the oil in the pan should never .exceed 300°F.

Harrison cooler listed in HD Parts List is a good cooler if you modify it internally so that oil flows from one end to the other. The inlet must be at one end and the outlet at the other.

Thanks Rick!
__________________
Sam...

Reply With Quote
  #15  
Old 03-09-2007, 11:24 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 10,137
Thanks: 2,659
Thanked 3,813 Times in 993 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Geez! I hope you only had to do a copy and paste and did not have to manually type all of that! Thanks Sam.
Rick
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #16  
Old 03-10-2007, 03:13 AM
mockingbird812's Avatar
mockingbird812 mockingbird812 is offline
Yenko Contributing Member
 
Join Date: Jun 2004
Location: Dayton
Posts: 14,391
Thanks: 897
Thanked 789 Times in 474 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Rick - a small price to pay to help out the boys and girls! In reality, if I did have to retype it, you'd probably see it sometime next month!
__________________
Sam...

Reply With Quote
  #17  
Old 03-14-2007, 06:58 AM
MYSTERYCHEVELLE MYSTERYCHEVELLE is offline
Senior Member
 
Join Date: Jun 2002
Location: Jeffersonville, PA
Posts: 1,106
Thanks: 263
Thanked 404 Times in 193 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

Here is the one I have pictures of an access to.. have no idea what it is for or the value?? anyone??
Attached Images
 
Reply With Quote
  #18  
Old 03-14-2007, 06:59 AM
MYSTERYCHEVELLE MYSTERYCHEVELLE is offline
Senior Member
 
Join Date: Jun 2002
Location: Jeffersonville, PA
Posts: 1,106
Thanks: 263
Thanked 404 Times in 193 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

and 4 others
Attached Images
 
Reply With Quote
  #19  
Old 03-14-2007, 06:59 AM
MYSTERYCHEVELLE MYSTERYCHEVELLE is offline
Senior Member
 
Join Date: Jun 2002
Location: Jeffersonville, PA
Posts: 1,106
Thanks: 263
Thanked 404 Times in 193 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

and
Attached Images
 
Reply With Quote
  #20  
Old 03-14-2007, 07:00 AM
MYSTERYCHEVELLE MYSTERYCHEVELLE is offline
Senior Member
 
Join Date: Jun 2002
Location: Jeffersonville, PA
Posts: 1,106
Thanks: 263
Thanked 404 Times in 193 Posts
Default Re: External Oil Cooler-4 bolt BB Chevys

this one
Attached Images
 
Reply With Quote
Reply

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

Forum Jump


All times are GMT. The time now is 11:15 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.