The all-new Front Page News Feed is now live   Read the announcement
TRExp

TR7 & TR8 Forum

silencer bump stop

Moss Motors
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor

LaVerne Avatar
LaVerne LaVerne Downey
Fruita, CO, USA   USA
1954 MG TF "Green Hornet"
1969 MG MGB
1979 Triumph TR8 "Wedgie"
I left the heater core at the radiator shop for cleaning and testing so I can't get any pictures right now of the bell inside the heater core inlet pipe. The feed pipe is just a straight piece of pipe inserted into the bushing which would be fitted into the heater core inlet first. The bushing is tapered from the end of the insert . The last two photos show the position of the bushing on the inlet pipe when it is fitted.

. Hide this ad & support a small business by becoming a Gold Supporting Member

Attachments:
IMG_3302.JPG    51.9 KB
IMG_3302.JPG

IMG_3358.JPG    52.1 KB
Sign In or Register to view this photo
IMG_3441.JPG    56.5 KB
Sign In or Register to view this photo
IMG_3442.JPG    31.3 KB
Sign In or Register to view this photo
Was this post helpful or interesting?
Yes No Thank
LaVerne Avatar
LaVerne LaVerne Downey
Fruita, CO, USA   USA
1954 MG TF "Green Hornet"
1969 MG MGB
1979 Triumph TR8 "Wedgie"
Some measurements


Attachments:
IMG_3426.JPG    55.6 KB
IMG_3426.JPG

IMG_3427.JPG    56.7 KB
Sign In or Register to view this photo
IMG_3436.JPG    62.3 KB
Sign In or Register to view this photo
IMG_3437.JPG    64.6 KB
Sign In or Register to view this photo
Was this post helpful or interesting?
Yes No Thank
LaVerne Avatar
LaVerne LaVerne Downey
Fruita, CO, USA   USA
1954 MG TF "Green Hornet"
1969 MG MGB
1979 Triumph TR8 "Wedgie"
Few more

. Hide this ad & support a small business by becoming a Gold Supporting Member

Attachments:
IMG_3437.JPG    64.6 KB
IMG_3437.JPG

IMG_3438.JPG    46.5 KB
Sign In or Register to view this photo
IMG_3439.JPG    54.4 KB
Sign In or Register to view this photo
IMG_3440.JPG    36.9 KB
Sign In or Register to view this photo
Was this post helpful or interesting?
Yes No Thank
Bpt70gt Avatar
Bpt70gt Brian T
Westmoreland, NH, USA   USA
Certainly a printable part but will it seal is another question. What holds the pipe in position--just fit and friction? Looks like a softer rubber compound, I think I'd print that in NINJA-FLEX rather than polyurethane. What sort of psi would you expect it to see---and temperature?

BT

Was this post helpful or interesting?
Yes No Thank
LaVerne Avatar
LaVerne LaVerne Downey
Fruita, CO, USA   USA
1954 MG TF "Green Hornet"
1969 MG MGB
1979 Triumph TR8 "Wedgie"
Pressure would depend on the cap I suppose..... 15 lbs? Temp... up to boiling temp min would be a requirement I'd think. The inlet/outlet pipes are welded to a bracket and the bracket is riveted to the heater/ air cond box, so in theory nothing should be moving once assembled.


Attachments:
GJHA8365.JPG    57.9 KB
GJHA8365.JPG

Was this post helpful or interesting?
Yes No Thank
Bpt70gt Avatar
Bpt70gt Brian T
Westmoreland, NH, USA   USA
Thanks LaVerne, I'm on it. I have a idea that might work. It's basically a static seal so that gives me some options.

BT

Was this post helpful or interesting?
Yes No Thank
Bpt70gt Avatar
Bpt70gt Brian T
Westmoreland, NH, USA   USA
CAD rendering of the bushing/seal.

BT


Attachments:
TR8 heater bushing-seal.JPG    12.8 KB
TR8 heater bushing-seal.JPG

Was this post helpful or interesting?
Yes No Thank
LaVerne Avatar
LaVerne LaVerne Downey
Fruita, CO, USA   USA
1954 MG TF "Green Hornet"
1969 MG MGB
1979 Triumph TR8 "Wedgie"
That certainly looks the part. thumbs up

Was this post helpful or interesting?
Yes No Thank
Pat.L Avatar
Pat.L Silver Member Patrick Ledford
New Wilmington, PA, USA   USA
In reply to # 1599621 by Pat.L
In reply to # 1599247 by LaVerne I'm in the process of tearing apart the heater/air cond box right now. If I don't destroy the bushing I'm hoping Brian can come up with a suitable replacement. Also on my wish list is the late inside door handle bezels...if they will work with the earlier door handles. Somebody would have to come up with a sample of one to copy for that part.

LaVerne.When you have that bushing out post or send me a picture. I obtained a couple of boxes of TR8 parts last year and there were numerous seals and bushings. Possibility there may be a NOS seal Brian could use. i probably will not be tearing mine apart until late summer.

Although that seal looks familiar there was nothing in the box of misc seals and parts I purchased. I hope mine is as good as yours or Brian's repo works.



Patrick
1980 TR8 DHC TPVDV8AT209637
1957 TR-3 Under restoration TS20462LO
Western Pennsylvania Triumph Association
TWOA

Was this post helpful or interesting?
Yes No Thank
Bpt70gt Avatar
Bpt70gt Brian T
Westmoreland, NH, USA   USA
Here's how I would create this heater tube seal. I'll print the gland body in nylon for proof of concept but after the concept is good I'd then turn the gland in aluminum. The O-rings do the sealing on the tube and the heater inlet. For heat and pressure I wouldn't trust the gland made from nylon but aluminum would be very good. The gland made from aluminum is an easy part to make and the O-rings are cheap. Standard AS568 Buna-N O-rings.

BT


Attachments:
Heater Seal-1.JPG    15.7 KB
Heater Seal-1.JPG

TR7-8 Heater Gland Seal-2.JPG    19 KB
Sign In or Register to view this photo
Was this post helpful or interesting?
Yes No Thank
Bpt70gt Avatar
Bpt70gt Brian T
Westmoreland, NH, USA   USA
TR8&7 heater bushing/seal. Got to devise a way to pressure test and determine heat tolerance. Looks promising. Printed in a 85A durometer polyurethane.
Second one off the printer, still making some minor adjustments.

BT


Attachments:
TR8 heater bush seal-poly.JPG    19.6 KB
TR8 heater bush seal-poly.JPG

Was this post helpful or interesting?
Yes No Thank
. Hide this ad & support a small business by becoming a Gold Supporting Member

To reply or ask your own question:




Registration is FREE and takes less than a minute


Having trouble posting or changing forum settings?
Read the Forum Help (FAQ) or contact the webmaster