• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

TR2/3/3A Rebuilding H4 carbs

Share this page

R

Redoakboo

Jedi Warrior
Country flag
Offline
I am rebuilding the carbs on my TR-2, under restoration. What ever oil was in the damper res. was apparently to heavy. I could, with a bit of effort push the pistons upward, one even seem to stop, as if it were hitting something? Thought I would clean them out and put some fresh oil in the damper res. What weigh would you guys recommend, and how much to pore in?

Thanks
 
TR3driver

TR3driver

Great Pumpkin - R.I.P
Offline
Probably varies, but straight 20 weight engine oil seemed to work the best for me. The book says to use the same straight weight as recommended for the engine (chart in the owner's manual).

Look inside for the top of the sliding shaft, and fill to about that level. Any excess will fairly quickly run out and in the process, lube the shaft.

Also check that they move absolutely freely with the plunger out. Sounds like you might have some damage to a dome or something. They are thin and very soft, easy to damage in the parts bin.
 
CJD

CJD

Yoda
Country flag
Offline
Have you already done the rebuild? Or is this just getting a feel before you get started?
 
LarryK

LarryK

Yoda
Country flag
Offline
Back in the 50s the manuals for cars with SUs said same oil that was in the oil was appropiate. Over the years and improvements to tuning, etc., the oil of choice is 20W or buy the bottle of SU Carb oil (more expensive).
 
LarryK

LarryK

Yoda
Country flag
Offline
Pretty deep! My Dad bought a 57 Jag 140 coupe in 65. He was a mechanic thru school. He was amazed they had oil for the dampers and was really in awe with the manual stating engine oil. He was using 20W50 at the time. Car ran good, I learned on it and raced it. My 120 was the same and my MK1 shows SU oil or 20W and it is a 58. My 57 says, same as engine oil. I used 20W in Spits and GT6, late 60s to mid 70s, same as 73 XJ6. Any rebuilds now I use the SU oil as people would rather set a small bottle with spout on shelf instead of a can.
 
S

STeve 1958

Jedi Hopeful
Offline
I use 20w50 and it works great. People who race these cars often put heavier oil in to richen the mixture on acceleration. That hurts the gas milage though. Thinner oil will increase you gas milage but cost you in power. I don't know anyone who owns a TR for the gas mileage so go with the 20 weight.
 
LarryK

LarryK

Yoda
Country flag
Offline
:encouragement:
 
Similar threads
Thread starter Title Forum Replies Date
Tinkerman TR2/3/3A Rebuilding SU carbs 1960 TR3A Triumph 3
glemon Rebuilding stromberg Carbs Throttle Shaft Bushings Triumph 6
D Rebuilding the SU HD8 carbs Austin Healey 24
eejay56 Rebuilding SU carbs Triumph 16
Tinkerman Rebuilding SU carbs Triumph 4
J rebuilding carbs. Triumph 2
S TR2/3/3A Rebuilding a cylinder head Triumph 10
S TR2/3/3A Rebuilding a tr3 transmission and second gear, Triumph 57
S TR2/3/3A when rebuilding a differential Triumph 9
M TR2/3/3A Rebuilding suspension Triumph 29
G Rebuilding Front Seats Austin Healey 4
E TR6 Rebuilding Distributor Triumph 2
JMACENGINESHOP BJ7 Engine Rebuilding Austin Healey 23
S TR2/3/3A Engine Rebuilding. Triumph 14
L MGB Rebuilding a 1977 MGB MG 1
S TR2/3/3A Rebuilding the early tr3 starter Triumph 5
Joel Lester TR2/3/3A What type of valve to use when rebuilding the head? Triumph 10
KVH General Tech Rebuilding the Engine Triumph 5
K TR2/3/3A Rebuilding an Engine?..New Cam Sprocket & Gear...1/2 Price Triumph 0
drooartz Rebuilding rear axle Spridgets 19
T Rebuilding a 1275 for a BE Spridgets 8
pkmh Rebuilding Armstrong Lever Shocks on a BJ8 Austin Healey 28
steveg Steering rocker shaft - chemical rebuilding Austin Healey 3
steveg Rebuilding roadster windshield Austin Healey 24
A Rebuilding Tiger window regulator question Sunbeam (Rootes) 3
S TR2/3/3A Rebuilding Dr2 Lucas wiper motor Triumph 16
S TR2/3/3A rebuilding bomb nose starter Triumph 9
W Looking for engine rebuilding 100-6 Austin Healey 12
KVH General Tech Rebuilding the Engine--a few practice pointers [for me] Triumph 11
S TR2/3/3A rebuilding door panels Triumph 15
Rut TR4/4A Seat rebuilding Triumph 3
steveg Rebuilding the Dip Switch Austin Healey 9
Rut TR4/4A Seat rebuilding Triumph 6
CZ_Dave MGB Is it worth doing the Shock Conversion Kit or Rebuilding Exsisting shocks? MG 16
JFeher TR2/3/3A Rebuilding A type OD I Need advise / measurements Triumph 14
KVH TR4/4A Engine rebuilding Triumph 17
gbtr6 TR6 Rebuilding TR6 Engine, Tips? Triumph 7
pbraun Anyone have a 1275 core for rebuilding? Spridgets 8
Got_All_4 TR2/3/3A Continually Rebuilding of my J Type Gear Box Triumph 2
drooartz MGB-GT Rebuilding the seats MG 28
Gray_Cat MGB Rebuilding MGB Overdrive MG 4
S TR2/3/3A rebuilding a tr3 water pump Triumph 22
Lin Rebuilding a master cylinder for BT7 Austin Healey 3
PatGalvin TR2/3/3A Guide for SU Rebuilding Triumph 8
H TR4/4A 4A convertible top rebuilding sequence Triumph 8
sim Rebuilding Front Suspension 58 sprite spring question Spridgets 6
Lukens TR2/3/3A More questions about rebuilding my steering box Triumph 20
charleyf TR4/4A Hs6 carb rebuilding Triumph 8
S TR2/3/3A Transmission Rebuilding Triumph 29
L 1966 BJ8 frame rebuilding questions Austin Healey 1

Similar threads

Top