Results 1 to 14 of 14

Thread: Cracked Zenith-Stromberg float assemblies

Discussions of Triumph motor cars

  1. #1
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Cracked Zenith-Stromberg float assemblies

    Got a call from a friend about a sudden rich running problem with his í64 Tr4, strong smell of fuel, sputtering, etc. I told him to stop running it till I got there.
    When I got to his place there was a strong smell of fuel inside the garage were he kept the car. So being on the cautious side I told him that we should push the car outside to troubleshoot it.
    After starting the Tr it didít take long to figure out the problem since fuel was dripping out of the front air filter, onto the lower inner fender and the groundÖ.
    So we took the front Z-S carb apart expecting a stuck needle valve but instead we found the float assembly cracked wide open! So as a precaution we took the rear carb apart to see its condition and we found another cracked float assembly, not as bad as the frontís, but still cracked.

    As far as my friend knows these floats are original to the car (he has owned it since 1967) so they could be 55 years old.


    So the car is out of commission waiting for replacement carb floats.

    Wonder if the replacement floats will last 55 yearsÖ..

    M.

    Attached Images Attached Images
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  2. #2
    Yoda glemon's Avatar
    Join Date
    Jun 2007
    Location
    Nebraska, USA
    Posts
    3,280
    Thanks Thanks Given 
    13
    Thanks Thanks Received 
    5
    Thanked in
    5 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    The floats for these carbs weren't available for a while, they are last I checked, they are supposed to be made of stuff impervious to gas, alcohol, etc. Though I know that the statement in the advertising doesn't make true.

  3. #3
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Yes, he ordered a pair of float assemblies made of Nitrophyl.

    Guess I should check the floats in my carbs.....

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  4. #4
    Yoda Geo Hahn's Avatar
    Join Date
    Sep 2001
    Location
    Mt Lemmon, Arizona
    Posts
    9,330
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    8
    Thanked in
    8 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Do check them - even if they haven't cracked to the point of total failure they may have a seam that is allowing some fuel into the float. That will cause poor running.

    I have even had a partially fuel-logged float that wold cause the engine to die on hard left-handers. Felt like fuel starvation but really if was dumping fuel into the intake and killing the engine.

    I now have the Nitrophyl and hopefully 'problem solved' for a long long time.

  5. #5
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    The floats in my carbs are probably ready to crack if they're not cracked already, they are even older than the ones in my friend's Tr4.
    I think I will just order new Nitrophyl floats tonight, no use taking the carbs apart and then find out you need parts.....

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  6. #6
    Yoda Gliderman8's Avatar
    Join Date
    Jun 2008
    Location
    PA
    Posts
    7,970
    Thanks Thanks Given 
    11
    Thanks Thanks Received 
    25
    Thanked in
    25 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Quote Originally Posted by Merlin63Tr4 View Post
    Yes, he ordered a pair of float assemblies made of Nitrophyl.

    Guess I should check the floats in my carbs.....

    M.
    Where's the best place to order the floats from?
    Can you post a link?
    Elliot
    Central PA
    1976 TR6 White/Biscuit interior SOLD
    1973 TR6 Damson Plum / Biscuit interior, HVDA 5-speed, Good Parts Hubs
    Nostalgia isn't what it used to be.

  7. #7
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Elliot,
    From the checking I did, all the major vendors have them
    available.
    For example;
    Tr4 floats
    Moss Motors: https://mossmotors.com/float-arm?assoc=49156

    Rimmer Bro.: https://rimmerbros.com/Item--i-CDZX1

    Tr6 floats
    Moss Motors: https://mossmotors.com/float-carbure...yl?assoc=43336

    etc.

    M.
    Last edited by Merlin63Tr4; 03-11-2019 at 10:51 AM.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  8. #8
    Yoda dklawson's Avatar
    Join Date
    Mar 2005
    Location
    Durham, North Carolina, USA
    Posts
    6,063
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    39
    Thanked in
    36 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Several years ago I had a float sink on our GT6. No one had replacement floats, not even Joe Curto. Fortunately I was able to get a working float from a spare carb I had. These are the 150 CD carbs, not the more common, later CD2 series for which floats are available.

    Where did you find the new floats? I can tell from the photos you posted that they are the same style of floats as used on the GT6. However, I assume the TR4 has 175 CDs. I'd like to get some new ones if they are available for the 150 size.
    Doug L.
    '64 Morris Mini Cooper-S 1275
    '67 Triumph GT6 Mk1

  9. #9
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Doug,
    Yes Tr4s use Z-S 175CD carburetors,
    From the quick searching I did, I was only able to locate some floats for GT6 Mk2 (68-72).
    Web site did not specify Z-S150CD .

    British Parts Northwest:
    https://www.bpnorthwest.com/triumph/...nitrophyl.html

    Might have to put Webbers on that puppy,,,,,

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  10. #10
    Yoda dklawson's Avatar
    Join Date
    Mar 2005
    Location
    Durham, North Carolina, USA
    Posts
    6,063
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    39
    Thanked in
    36 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Quote Originally Posted by Merlin63Tr4 View Post
    From the quick searching I did, I was only able to locate some floats for GT6 Mk2 (68-72).
    Thanks for looking. Unfortunately that is the same thing I found a couple of years ago. Our GT6 is a '67 so the later floats are not a direct fit.

    When the problem happened I ordered one of the later CD2 floats to experiment with. I believe what might work is to use the later CD2 float by cutting off one of the two float valve actuating arms and putting a spacer on the pivot shaft to hold the later float horizontally in the correct position. After that it will take some experimenting to get the equivalent level of fuel in the float bowl.

    That's why I used the donor float from an extra carb. I was too lazy at the time to experiment. Hopefully I won't have to take up those experiments anytime soon.
    Doug L.
    '64 Morris Mini Cooper-S 1275
    '67 Triumph GT6 Mk1

  11. #11
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Doug,
    That's too bad.
    Do you know how much smaller the 150CD floats are than the 175CD floats? Could the 175CD floats be made to fit?

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  12. #12
    Yoda poolboy's Avatar
    Join Date
    Oct 2007
    Location
    S.W. Mississippi
    Posts
    3,683
    Thanks Thanks Given 
    12
    Thanks Thanks Received 
    11
    Thanked in
    11 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Quote Originally Posted by Gliderman8 View Post
    Where's the best place to order the floats from?
    Can you post a link?
    The floats for the ZS carb in the TR4 is different from the float in the TR6 carbs...but Joe Curto has both and shipping will be closer to the actual price and not based on price of items.
    A phone call is best...not email.
    DRIVE 'EM IF YOU GOT 'EM

  13. #13
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Ooops, finally noticed that Gliderman8 was posting about Tr6 floats.

    I have corrected my post by adding a link to Tr6 carb floats

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  14. #14
    Jedi Trainee Merlin63Tr4's Avatar
    Join Date
    Nov 2006
    Location
    Milpitas, CA. U.S.A.
    Posts
    251
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts

    Re: Cracked Zenith-Stromberg float assemblies

    Quote Originally Posted by poolboy View Post
    The floats for the ZS carb in the TR4 is different from the float in the TR6 carbs...but Joe Curto has both and shipping will be closer to the actual price and not based on price of items.
    A phone call is best...not email.
    Poolboy,
    Sorry for the late response, things got a little hectic around here.
    Took your advice and called Joe Curto.
    He is the originator of the TR Nitrophyl carb floats.
    His floats are around half the price of the other vendors with a very sensible shipping cost.
    Thanks for the heads up.

    M.
    Merlin the '63 Tr4.... it grows younger !

    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." -- Douglas Noel Adams (1952-2001)

  15. The Following User Says Thank You to Merlin63Tr4 For This Useful Post:

    poolboy (03-15-2019)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •