Home 
Home Search search Menu menu Not logged in - Login | Register
> Jensen Healey & Jensen GT Tech > Cooling > Radiator cap

 Moderated by: Greg Fletcher
New Topic Reply Printer Friendly
Radiator cap  Rate Topic 
AuthorPost
 Posted: 04-29-2015 06:29 am
  PM Quote Reply
1st Post
Frank Schwartz
Member
 

Joined: 02-18-2011
Location:  
Posts: 313
Status: 
Offline
 I think I may be forgetting things.... Our JH was leaking coolant from under the radiator cap when the engine came up to temp. I think this one is rated too high for the car...I looked in the service manual and could not find the specs for the cap. Can anyone tell me what is the correct pound rating for a new cap??

Thanks
Frank
Back To Top PM Quote Reply  

 Posted: 04-29-2015 08:58 pm
  PM Quote Reply
2nd Post
Frank Schwartz
Member
 

Joined: 02-18-2011
Location:  
Posts: 313
Status: 
Offline
 Hmmmm...I see 25 people viewed this inquiry and not a single one of you had an answer...shame on you, fellow Jensenites....
Frank Schwartz
Back To Top PM Quote Reply

 Posted: 04-29-2015 09:15 pm
  PM Quote Reply
3rd Post
answerman
Member
 

Joined: 09-10-2012
Location: Little Chute, Wisconsin USA
Posts: 435
Status: 
Offline
 I can look at my cap tonight (assuming it's marked) if no one gets you an answer in the meantime. I can't guarantee mine is the original cap, though.
Back To Top PM Quote Reply  

 Posted: 04-29-2015 11:29 pm
  PM Quote Reply
4th Post
Jim Ketcham
Member
 

Joined: 03-13-2005
Location: Salt Point, New York USA
Posts: 208
Status: 
Offline
 Sorry. Missed this one.
The cooling system is rated at just 10 psi (as per shop manual).
The OEM radiator cap was 7 PSI.

I noticed most vehicles I've seen are running 13 psi caps. I believe it's because the 7 psi caps are harder to find.
Back To Top PM Quote Reply

 Posted: 04-30-2015 12:05 am
  PM Quote Reply
5th Post
Jensen Healey
Super Moderator


Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
Status: 
Offline
 Thanks Jim. My caps are 13 and 16lbs. I didn't want to post erroneous information again.

Kurt
Back To Top PM Quote Reply  

 Posted: 04-30-2015 12:47 am
  PM Quote Reply
6th Post
Frank Schwartz
Member
 

Joined: 02-18-2011
Location:  
Posts: 313
Status: 
Offline
 7 pounds? Really? Are you absolutely sure? I mean, really, really sure?

If so, where can I find that information?

Thanks
Frank
Back To Top PM Quote Reply

 Posted: 04-30-2015 01:54 am
  PM Quote Reply
7th Post
Jensen Healey
Super Moderator


Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
Status: 
Offline
 Hi Frank, page 7 of the shop manual states the cooling system is rated for 10PSI.

I see RockAuto UK sells the 7# cap for the JH.

MotoRad which makes aftermarket caps specifies the ST7, a 7# cap with safety lever for the JH. http://www.motoradusa.com/motorad_catalog.cml?catalog=MotoRad&year=1974&make=Jensen&model=Healey&engine=2.0L+4Cyl+L+%281973%29
Back To Top PM Quote Reply  

 Posted: 04-30-2015 05:11 am
  PM Quote Reply
8th Post
Frank Schwartz
Member
 

Joined: 02-18-2011
Location:  
Posts: 313
Status: 
Offline
 I understand...the book does say 10 pounds, but I have yet to find where anywhere it states that the radiator cap is of any pounds...and none of are sure, I think, of what really came on the car...I am still looking..and in the parts book, it is merely shown as part #92013...which is ?????
Back To Top PM Quote Reply

 Posted: 04-30-2015 04:50 pm
  PM Quote Reply
9th Post
Jensen Healey
Super Moderator


Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
Status: 
Offline
 I feel that the manufacturer of radiator caps doesn't sell just any cap for the JH. They sell the 7# cap. They have liability if they sell the incorrect cap and it causes an injury.
Have you called Mike at Delta?

Cheers, Kurt
Back To Top PM Quote Reply  

 Posted: 04-30-2015 04:51 pm
  PM Quote Reply
10th Post
Jim Ketcham
Member
 

Joined: 03-13-2005
Location: Salt Point, New York USA
Posts: 208
Status: 
Offline
 Frank,
7 psi cap is what came from the factory with the car. I am sure since I bought the car new in 1974.
You would not want a cap with a pressure rating higher than the systems as it would not protect the system. Think of it as a fuse.

Mine has always been 7 psi and it has never blown coolant yet.
Back To Top PM Quote Reply

 Posted: 04-30-2015 11:26 pm
  PM Quote Reply
11th Post
Frank Schwartz
Member
 

Joined: 02-18-2011
Location:  
Posts: 313
Status: 
Offline
 Thanks, Jim...that is what I needed to find out..someone with an original cap ...so off tot he car parts store for 7psi cap..

Thank you,
Frank
Back To Top PM Quote Reply  

 Posted: 11-15-2015 05:05 pm
  PM Quote Reply
12th Post
Kees
Member
 

Joined: 11-15-2015
Location:  
Posts: 2
Status: 
Offline
 The original cap on my UK spec car was 9lbs. They cap to be used should be 10lbs. ~!5lbs is regarded as safe for the cooling system.
I run my car at 86 degrees C and zero pressure because of a suspected head gasket failure more than a year ago, no problems, no coolant loss whatsoever.
Kees Oudesluijs
Back To Top PM Quote Reply

Current time is 01:30 am  
> Jensen Healey & Jensen GT Tech > Cooling > Radiator cap Top


UltraBB 1.172 Copyright © 2007-2011 Data 1 Systems