|
Potential overheating issue
Hi guys,
I'm still doing my initial running in at the moment. I went for a short (15 mile) drive earlier this evening, temp steady at about 80degC- got stuck in traffic for about 10 mins, and temp rose to 120! I have twin fans behind the rad, dash controlled, they go on as soon as I stop moving. As it's still quite cool here at the moment, I want to make sure I don't have a problem when the air temp is 30degC I have a bleed valve in the intake manifold, so I'm sure I don't have an airlock. My only concern is my expansion tank- it an original style FE, but without the small pipe outlet that goes back to the rad- could this make a difference? Cheers, Mark |
What kind of fans? What configuration?
A picture of your setup would help. |
I have a 28" alloy radiator from a Mitsubishi 3000gt, and two 12" fans pulling.
Mark |
I have a 28" alloy radiator from a Mitsubishi 3000gt, and two 12" fans pulling.
Mark |
Sorry about that- computer malfunction!
Mark |
In that radiator you may not have enough coolant volume, generally a radiator for these is 3" thick and has multiple horizontal tubes IE: 2x1.25". OEM application for Mitsu was a little over 300HP (??) it may not be able to handle the heat put off by your BBC. If the fans come on as soon as you stop, it's running on the verge of overheating or your fan temp sensors are set too low.
|
Hi Rick,
I remember when I was looking for a Radiator, hunting for the biggest that would fit, with outlets in the right places. I also read that these rads were as efficient as the old three cores, but maybe not:confused: |
In an OEM installation much of the cooling air is brought from below, with chin spilers and the like. A Cobra has to get all the air through the body/grill/radiator opening. Combine that with the closed quarters of a Big Block and you have the potential of a warm engine.
|
Dump the OEM radiator garbage. You're going to fry your motor if you don't!
There's B-Cool, Griffin, Durodyne and a multitude of other custom performance radiator manufacturers who makes a radiator that'll keep your BBC cool. You'll need dual 1" or 1 1/4" tubes as Rick said. I'm running a Griffin in mine and it has dual 1 1/2" tubes. Griffin also has a geat website. You can choose radiator sizes and inlet/outlet locations to match your configuration. For a minimal fee they'll even custom make one EXACTLY like you need. |
Thanks guys I'll have a look at the griffin site. You don't think not having the small pipe from expansion tank to radiator makes any difference?
Mark |
1 Attachment(s)
Heres a picture of my set up-maybe another potential problem is that my pipes should be switched i.e. upper outlet should go to rad, and lower should go to stat (it would bolt directly onto the head of an FE)
|
| All times are GMT -7. The time now is 05:42 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: