Go Back   VetteMOD.com > VetteMOD Technical Discussion > Classic Corvettes

Reply
 
Thread Tools
  #471  
Old 06-04-2019, 08:17 PM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default

Quote:
Originally Posted by BBShark View Post
31 1/2" wide x 18" tall.
Thank you, sir!
Reply With Quote
  #472  
Old 06-08-2019, 05:46 PM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default

Well, I found a radiator that will package pretty easily onto the radiator support, with just the addition of some simple custom brackets, but I noticed an item I'm not comfortable with.

First, the upside of why I picked this radiator: The lengthwise dimension to fit our antiques is getting harder to find. Most decent candidates are too long. This radiator is just right, and the height was acceptable (another inch or two higher would have been perfect, though). The weight of this is 4# lighter than my current aluminum radiator (which is about 13# lighter than the stock radiator). I'm also trying to reduce the water weight of the full radiator, as a second tube row adds 100% more water weight, but only adds a small amount of extra cooling capacity (25%, according to the manufacturer of my current radiator). My measurements/guesstimates are that this "new" radiator will hold 5.5# of water, while the current radiator holds about 12#. So, weight wise, this "new" radiator is in the 10# range of additional weight reduction. Additionally, like the stock radiator, this radiator doesn't have a fill/cap neck, but has a vent line that can connect to the expansion tank.

Now, the downsides: Will it cool sufficiently? I don't know, but the price I paid was cheap enough to take a gamble/try. No butchering needed to install this.

The inlet/outlet tubes are slightly smaller, so I would have to figure out how to adapt hoses that fit the thermostat housing and w/p to fit this radiator.

My biggest issue. The car was an auto trans model, and the radiator has a trans cooler in it. The cooler takes up so much of the end-tank volume, that it looks like there's an appreciable flow restriction for the water entering the radiator (I didn't notice the cooler size until I got the radiator hose segment removed so I could see straight into the tank). I don't have solid numbers of what gpm coolant flow is at higher RPMs, but I'm not comfortable with what I see. And, as much as I'd like to take the trans cooler weight out of the radiator, which would also help the flow problem, I don't believe the time, effort, and expense would be a wise use of my resources.

I may use this radiator for another project, and just rack up my time and money (thankfully, only twenty bucks) as a learning experience.

I may do some shopping on the interwebs looking for sizing info on radiators that fit different vehicles, and then focus on trying to find the applicable models at the junkyard again.

Last edited by 69427; 06-08-2019 at 05:52 PM.. Reason: Added content.
Reply With Quote
  #473  
Old 06-08-2019, 07:29 PM
vette427sbc's Avatar
vette427sbc vette427sbc is offline
United States | Addict
 
Join Date: Sep 2008
Location: Jersey Shore
Posts: 864
My Photos: (47)
Default

Sounds interesting... Thats a great weight reduction, and ahead of the axle

I have heard the argument both ways about high flow water pumps & flow requirements to cool a motor. I have to imagine the "optimum flow rate" is a variable based on uncontrollable things like ambient temp, airflow through the core, inlet water temp and probably a few more...

I downsized my radiator bigtime. C&R claims it should be OK, provided I have ducting and airflow optimized. Mines a 55mm core, 27.5"x14.5". I am also hoping the oil cooler will help with overall engine temp.
Post some pictures of the rad and the trans cooler if you can
__________________
Chris
AutoWorks Middletown NJ
@autoworksnj
Reply With Quote
  #474  
Old 06-09-2019, 01:24 AM
phantomjock's Avatar
phantomjock phantomjock is offline
United States | Addict
 
Join Date: Sep 2009
Location: Retired Again!
Posts: 1,253
My Photos: (698)
Default

Seem to recall (edited):
2 sq inch per HP and that was maybe a 2 - or 3 core?

Get by with less if using a fan I know for sure. I'll look it up in the morning - its somewhere here, with a add/subtract area based on manual, auto etc. Oh yeah, Like this one:
(found it on the desktop--sorry for quality)

In/out tube size probably not too big a problem - unless drastic. Remember you want to keep some heat in (180-200F).

Maybe use the transmission cooler bits on the diff?

Hope that provides "some" comfort.

Cheers - Jim
__________________
Rebuilder's Zen Saying:
One thought leads to another. If these thoughts link into a chain we become bound to the project. This bondage is subtle and remains until we complete the tasks -- or, STOP Thinking!
[Only registered and activated users can see links. Click Here To Register...]

Last edited by phantomjock; 06-09-2019 at 09:48 AM..
Reply With Quote
  #475  
Old 06-10-2019, 06:08 PM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default

Okay, guys, I've pissed away more of my life than I want to think about just trying to post two simple damn pictures. The first isn't the size I want, and the second won't show up. Pardon my poor manners here, but it shouldn't be this damn frustrating to just post two freaking pictures.




Just a quick mockup on the original support, and the original radiator for a size comparison.
Attached Images
File Type: jpg IMG_7759.jpg (918.6 KB, 5 views)

Last edited by 69427; 06-11-2019 at 02:38 AM.. Reason: Attached image
Reply With Quote
  #476  
Old 06-10-2019, 07:20 PM
BBShark's Avatar
BBShark BBShark is offline
United States | Garage Monkey
 
Join Date: Mar 2008
Location: Right here
Posts: 4,400
My Photos: (271)
Default

Mike, I attached it
__________________
Reply With Quote
  #477  
Old 06-11-2019, 12:24 AM
vette427sbc's Avatar
vette427sbc vette427sbc is offline
United States | Addict
 
Join Date: Sep 2008
Location: Jersey Shore
Posts: 864
My Photos: (47)
Default

Looks like it fits well enough in the rad support, although I wonder if the upper hose is going to give you an issue with the upper control arm. I know youve got C4 stuff, but it looks like it may come close? What car is this out of?
Reply With Quote
  #478  
Old 06-11-2019, 12:52 AM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default

Quote:
Originally Posted by BBShark View Post
Mike, I attached it
Thanks Larry.

I'm not sure what I'm doing wrong. Been a while since I last posted a picture here.
Reply With Quote
  #479  
Old 06-11-2019, 01:05 AM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default

Quote:
Originally Posted by vette427sbc View Post
Looks like it fits well enough in the rad support, although I wonder if the upper hose is going to give you an issue with the upper control arm. I know youve got C4 stuff, but it looks like it may come close? What car is this out of?
Nothing wrong with your eyesight there.

A rough measurement looks like the upper hose would run right under the UCA. I won't know exactly until I actually try to install the radiator.

The radiator came out of a 2001(?) Cavalier.
Reply With Quote
  #480  
Old 06-14-2019, 11:57 PM
69427's Avatar
69427 69427 is offline
United States | The Artist formerly known as Turbo84
 
Join Date: Mar 2008
Location: Clinging to my guns and religion in KCMO.
Posts: 2,689
My Photos: (2)
Default Radiator hose size adapters

I think I'll try installing this radiator to see if it will package okay, and if it will keep the engine temps under control at speed. I don't have any track days scheduled yet, so this might be the best time to work on it. I believe new mounts can be fabricated pretty easily to adapt this radiator to the radiator support framework. What I don't know off the top of my head is how I'm going to adapt the differing hose sizes (2" ID on the old stuff, to 1 3/8" ID on the radiator) to fit together. Some aluminum tubing pieces welded together is easy enough, but I'd like something that has some barb type ends so that the hoses won't slip off once everything is up to pressure. If anybody has some ideas/suggestions, I'd appreciate hearing them.

Thanks,
Mike

Edit: Did some thinking (should have done that earlier). On my shelf of used parts I have a thermostat housing that uses the same size hose as the radiator (1 3/8"), so I can just use one size hose on the top. The bottom hose will need to be a transition size as the water pump intake (2") is larger than the radiator outlet. I did some math. If I run the whole length of the top hose in 1 3/8", and the majority of the length from the radiator outlet in 1 3/8" hose, making the size transition right near the water pump inlet, I can reduce the hose volume of non-productive water (water that's not picking up heat or dissipating heat) by about .2 gallons, or 1.7 pounds.

Last edited by 69427; 06-15-2019 at 02:51 AM.. Reason: Added content
Reply With Quote
Reply


Thread Tools

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 12:22 PM.
 


Design by: vBulletin Skins Zone
Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.