Volvo RWD Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 4/2005

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Taper thread on cylinder head heater outlet?

posted by  OwenF on  Tue Oct 13 07:12 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Jul 7 13:55 CST 2012
[RELATED]

I'm just dismantling a B230F from a 945. On the cylinder head the heater hose connection is a steel fitting at the rear of the head next to the flame trap. This fitting was very stiff to remove, and on examination it appears to have a taper thread? It is very difficult to screw back into the aluminium head.
Am I correct in thinking that this fitting has a taper thread?
Thanks
Ian F







  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Taper thread on cylinder head heater outlet?

posted by  OwenF on  Thu Oct 15 02:04 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Jul 7 13:55 CST 2012
[RELATED]

I'm just bumping this up the list in case anyone of you can help with my enquiry?
Thanks in anticipation!

Ian F








  REPLY TO THIS MESSAGE    PRINT   SAVE 

Taper thread on cylinder head heater outlet?

posted by  Chris Mullet on  Thu Oct 15 07:02 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

I am going to just take a wild guess and say it could possibly be a standard tapered pipe thread. Pick up a threaded nipple at Home Depot to test my guess.








  REPLY TO THIS MESSAGE    PRINT   SAVE 

Taper thread on cylinder head heater outlet?

uid 27's pic
posted by  Art Benstein on  Thu Oct 15 08:25 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

You guessed right. The thread on my 398 head (B23F from '83) is 3/8-16 NPT.


--
Art Benstein near Baltimore

Did you know actor Raymond Burr had a brother who was a lumberjack? His name was Tim.








  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Taper thread on cylinder head heater outlet?

posted by  OwenF on  Thu Oct 15 10:07 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Jul 7 13:55 CST 2012
[RELATED]

Many thanks for these replies. I was a little concerned - steel thread into an aluminium head, and ver stiff to remove and replace. I feared I had destroyed the threads in the head.
It looks as if the steel insert had been sealed with some sort of white plumbers compound. I guess I will do the same when I replace it permanently.
Thanks again,
Ian F







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.