New radiator has extra holes - RX8Club.com



Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Reply
 
 
 
Thread Tools Search this Thread Rate Thread
Old 05-19-2017, 04:48 PM   #1
Registered
Thread Starter
 
Join Date: Apr 2014
Posts: 40
New radiator has extra holes

So, just started to install a new radiator and saw that it has two brass holes at the bottom, and it comes with brass nipples to install in the holes. The radiator is supposed to be for a manual transmission. Is this an A/T thing? Here's a photo of old and new.

Old and new radiator Any way to make this work?

Also, any suggestions for replacing the foam? The old foam is crumbling to dust...
Jvswan is offline   Reply With Quote
Old 05-19-2017, 04:50 PM   #2
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
Those fittings are for the trans cooler, it's for an automatic car. Or that company only makes one radiator that is supposed to fit the auto and the manual RX-8.
9krpmrx8 is online now   Reply With Quote
Old 05-19-2017, 04:52 PM   #3
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
Nothing will leak out of those, you can just leave them open like that. Just make sure the core is the same size.
9krpmrx8 is online now   Reply With Quote
Old 05-19-2017, 04:54 PM   #4
Registered
Thread Starter
 
Join Date: Apr 2014
Posts: 40
Quote:
Originally Posted by 9krpmrx8 View Post
Nothing will leak out of those, you can just leave them open like that. Just make sure the core is the same size.
Awesome! Glad to know. The core is the same size, just a weird angle for the photo.
Jvswan is offline   Reply With Quote
Old 05-19-2017, 04:57 PM   #5
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
And for the foam, just buy the square foam at Home Depot or Lowe's and use double sided tape (or gorilla Glue gel works too) to attach to the new Radiator in the same pattern as the OEM foam.
9krpmrx8 is online now   Reply With Quote
Old 05-19-2017, 05:03 PM   #6
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 17,293
Something attached to the plastic undertray to stop the foam blowing up is a good idea too
Brettus is offline   Reply With Quote
Old 05-19-2017, 05:17 PM   #7
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
^ if there was a like button, I would like that post.
9krpmrx8 is online now   Reply With Quote
Old 05-19-2017, 08:31 PM   #8
Registered
Thread Starter
 
Join Date: Apr 2014
Posts: 40
Went to Home Depot and all they had was rigid insulation foam sheets. On my way home I stopped at the local Ace hardware and found just the thing!

I'll glue it on and add some foil tape to maybe help it resist the heat from the engine bay.

Thick foam weatherstripping

Last edited by Jvswan; 05-19-2017 at 08:34 PM.
Jvswan is offline   Reply With Quote
Old 05-19-2017, 08:47 PM   #9
Koi no Ousama
iTrader: (25)
 
TeamRX8's Avatar
 
Join Date: Apr 2005
Posts: 18,926
They have that at HD and a lot of variations, you probably weren't on the aisle where they keep it. That's way big, too.
TeamRX8 is online now   Reply With Quote
Old 05-19-2017, 09:08 PM   #10
Registered
Thread Starter
 
Join Date: Apr 2014
Posts: 40
The HD aisle where the weatherstripping, door seals, window insulation, etc. had nothing wide enough for this application. Easy enough to cut down. Locktite glue and some metal tape and I'll be ready to install that sucker tomorrow.

Jvswan is offline   Reply With Quote
Old 05-19-2017, 10:04 PM   #11
Koi no Ousama
iTrader: (25)
 
TeamRX8's Avatar
 
Join Date: Apr 2005
Posts: 18,926
I'd recommend removing some of that, unless you like to cook steaks in your engine bay Ruths Chris style. It's a common misconception to seal the radiator off completely. You actually want it to seal at low speed and then at higher speed to fold back and let some air pass. Blocking it like that doesn't force more air through. It backs up and forms a pressure wave at the bumper instead while stressing the undercover attachments.
TeamRX8 is online now   Reply With Quote
Old 05-19-2017, 11:33 PM   #12
Registered
Thread Starter
 
Join Date: Apr 2014
Posts: 40
Quote:
Originally Posted by TeamRX8 View Post
I'd recommend removing some of that, unless you like to cook steaks in your engine bay Ruths Chris style. It's a common misconception to seal the radiator off completely. You actually want it to seal at low speed and then at higher speed to fold back and let some air pass. Blocking it like that doesn't force more air through. It backs up and forms a pressure wave at the bumper instead while stressing the undercover attachments.
Dang! Glad you said something. The material isn't stiff. I just thought it might melt. I'll see what I can do about loosening it up a bit
Jvswan is offline   Reply With Quote
Old 05-20-2017, 12:26 PM   #13
Koi no Ousama
iTrader: (25)
 
TeamRX8's Avatar
 
Join Date: Apr 2005
Posts: 18,926
I was saying it for a long time and someone finally tried it, but note he didn't experiment with removing more, the combustion side of the engine generates a lot of heat too ...

https://www.rx8club.com/series-ii-af...4/#post4769098
TeamRX8 is online now   Reply With Quote
Old 05-20-2017, 09:10 PM   #14
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 17,293
He did say "went crazy with the foam" implying he had it sealed up as tight as a nuns .

On the flip side , removing all the foam is a great way to overheat your engine . The point being , "have enough but don't overdo it " . Something that can be said about just about anything

My pick is leaving it similar to oem but stopping the underfoam blowing away at speed as mentioned previously.
Brettus is offline   Reply With Quote
Old 05-23-2017, 02:43 PM   #15
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
Yeah and that tape will likely just fall off with the heat. And that is exactly what I used.
9krpmrx8 is online now   Reply With Quote
Old 05-23-2017, 05:21 PM   #16
\_(ツ)_/
 
NotAPreppie's Avatar
 
Join Date: Mar 2006
Location: Chicago-ish
Posts: 1,509
I wonder how much pressure the AT cooler system can handle. Like, could you pipe the oil cooler loop through it? Would that even help?
NotAPreppie is offline   Reply With Quote
Old 05-23-2017, 05:25 PM   #17
SARXGROUP on FB
iTrader: (37)
 
9krpmrx8's Avatar
 
Join Date: Jan 2007
Location: San Antonio, Texas
Posts: 32,676
I doubt it would help at all but I am sure it would handle the pressure fine, it's just pipe that runs in and out of the lower tank.

I have added a cooler to that circuit on a buddies 2007 AT RX-8 that sees a good deal of track use. It helped a lot, he hasn't blown any more transmissions.
9krpmrx8 is online now   Reply With Quote
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 10:45 AM.


All content Copyright 2017 by Internet Brands, Inc.