Club Cobra

Club Cobra (
-   ERA---Speak with Bob Putnam (
-   -   Small Block ERA Webers Radiator Cap Rating? (

*13* 11-25-2009 09:11 PM

Small Block ERA Webers Radiator Cap Rating?
Bob, what Radiator cap pressure rating do you use with your Small Block Weber operated cars? I have a 16 psi. with a 195 thermostat.

strictlypersonl 11-26-2009 05:38 AM

We normally use a Motorcraft RS-62, which is a 13psi cap.

*13* 11-26-2009 07:27 AM

Thanks! Where are you placing the Thermostat? I have attached mine to the end of the Y-manifold but the motor likes to expel coolant when under hard acceleration on the street. Yes, i wait until everything is good & warmed up. Happy Thanksgiving everyone!

strictlypersonl 11-26-2009 08:11 AM

The closer to the engine, the better. What remote thermostat setup are you using? Is there a bypass built in?

*13* 11-26-2009 09:15 AM

I just built a custom manifold & attached the 195 thermostat to the end to fix the problem but it doesn't seem to have done the trick. I have no bypass as of now. I stole the idea of wiring the thermostat to the manifold from Rick Parker.

strictlypersonl 11-27-2009 05:58 AM

Now that's interesting! You will definitely need to find some way to bypass a small amount of water directly around the thermostat. Otherwise the hot water will never get to bathe the wax bulb to effect the thermostat opening.

Snakebit 11-27-2009 07:20 AM

You need to put in a bypass hose. Rick and I had the same problem with the dual outlet Weber manifold. The temp would not go over 140 on my ERA. I tried different thermostats like Moroso and Mr Gasket, nothing worked. I tried a regular thermostat with a 3/16 hole drilled through the face and the temp would not go over 170. I put in a bypass hose with a Mierze inline thermostst housing and a Napa Super Stat 180 thermostat and it works fine, stays at 180. The ERA radiator is huge.

*13* 11-27-2009 07:25 AM

So the bypass is necessary! Kinda what we were thinking.. Thanks for your input!

All times are GMT -7. The time now is 03:03 AM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the 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 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. 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 For full policy documentation refer to the following link: