• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)
Tips
Tips

TR4/4A got the Tr4 running, however.....Breather tube leak normal?

Zitch

Jedi Hopeful
Offline
So I got the 63 tr4 running with some help. Brakes fixed, carbs rebuilt/synced. I've taken her to the Gas station and around the town I live. Wow she's fun to drive and you get some looks.

However when I park her in the Garage there is a 2" oil drip puddle under the breather tube is that normal? What causes this? I'm new to the British cars.

Thanks
Zitch
 

TR3driver

Great Pumpkin - R.I.P
Offline
Not "normal" but unfortunately not that uncommon either. Most likely it indicates that the rings are not sealing well; either not seated after a rebuild or just worn out. Those steel wool air filters let a lot of dirt through, which can cause the rings & cylinder walls to wear out quickly.

Sometimes it will help to leave the oil level a bit low; halfway between the marks instead of right at the top mark.
 

JimTR4

Senior Member
Offline
Out of interest, my set up is not the breather tube but rather the set up with the rocker cover "feeding" oil vapor into the carbs (can never remember the correct term for that, closed?). Is there any alternative to the wire mesh filters I have?
I'd much prefer something that actually filters "stuff" better...

sorry if I'm diverting this thread!
 

Geo Hahn

Yoda
Country flag
Offline
...Is there any alternative to the wire mesh filters I have?

There are paper elements available but I just use foam sleeves:

ACKoozies_zps798b44d6.jpg


For the late TR4 (like yours & mine) the filters are smaller and I found the foam filter made for a ShopVac could be sliced into covers for those.
 
OP
Z

Zitch

Jedi Hopeful
Offline
The Car sat for a year or so, not driven that often. Maybe she just needs to be run. I've maybe put 10 miles on her since I got her in January. Could a ring be stuck? Would a compression test tell me for sure?

Thanks,


Not "normal" but unfortunately not that uncommon either. Most likely it indicates that the rings are not sealing well; either not seated after a rebuild or just worn out. Those steel wool air filters let a lot of dirt through, which can cause the rings & cylinder walls to wear out quickly.

Sometimes it will help to leave the oil level a bit low; halfway between the marks instead of right at the top mark.
 

TuffTR250

Jedi Warrior
Country flag
Offline
My TR3 has a TR4 engine in it thus it does not have the breather tube. However, I'm getting oil coming out of the breather cap on the top of the valve cover. Is that the same worn ring indicator as when oil comes out the breather tube on the TR3 engine? Is there any way to stop that other than new rings? Can I put some foam under the breather cap to "catch" the oil?
Regards,
Bob
 

TR3driver

Great Pumpkin - R.I.P
Offline
The Car sat for a year or so, not driven that often. Maybe she just needs to be run. I've maybe put 10 miles on her since I got her in January. Could a ring be stuck? Would a compression test tell me for sure?
Could be a stuck ring; but a compression test won't tell you the difference between a stuck ring and a worn-out one.

One thing you could try (although it would have been better before you started it) would be to remove the plugs and pour 1/4 cup or so of Marvel Mystery Oil down each plug hole. Let it sit like that overnight, then spin it once with the starter before putting the plugs back in (just in case the MMO hasn't drained completely into the crankcase past the rings). Of course it will smoke like crazy when you start it, but the MMO might loosen up the rings.

Then take a nice long drive, not just 10 miles, to get the oil thoroughly warmed up.
 

charleyf

Jedi Knight
Bronze
Country flag
Online
My TR3 has a TR4 engine in it thus it does not have the breather tube. However, I'm getting oil coming out of the breather cap on the top of the valve cover. Is that the same worn ring indicator as when oil comes out the breather tube on the TR3 engine? Is there any way to stop that other than new rings? Can I put some foam under the breather cap to "catch" the oil?
Regards,
Bob
The early TR4 engines did have a breather tube. And the later TR4 engines had no tube and a valve cover with a cap that sealed ( like a radiator cap) to allow the venting to be directed to the intake. Sounds like you have a combination of each, which is one reason why you are getting the oil at the cap rather than breathing from the tube.
Charley
 

TuffTR250

Jedi Warrior
Country flag
Offline
Sorry to hijack this thread! I'v only had my TR3 for a year. It appears the previous owner(s) did various "upgrades" like TR4 engine block and head, but retained the TR3 intake and exhaust manifolds, and the H6 SU carbs with metal screen air breathers. I did not realize the difference in valve covers but it looks like the PO also used the original TR3 valve cover with the big breather cap that sets on a stem at the front of the engine. I also have a TR4 transmission, which is nice since it has first gear syncho. Not sure what other hybrid mix I might have.
Regards,
Bob
 

TR3driver

Great Pumpkin - R.I.P
Offline
Bob, did you have another question?

There are lots of mixes running around; my 56 TR3 is currently wearing the carbs from my 59 TR3A, plus a TR6 gearbox with a TR4 overdrive and a TR3 top cover. TR4 temp gauge, TR6 wheels (with TR3 covers), the list goes on. It's all part of the journey!

Someday, I would like to actually engineer a positive crankcase ventilation system for the TR that would work, with filtered fresh air being sucked into the crankcase most of the time, and the crankcase fumes always being routed where they will get burned. Somehow, Triumph never did quite get it right, IMO, even though they re-arranged it at least 5 or 6 times before finally inheriting a GM engine that had it right (TR8). But I'm a long way from even starting that project, so for now I've still got the ole road draft tube (and the attendant puddle underneath).
 

TR3driver

Great Pumpkin - R.I.P
Offline
Similar threads
Thread starter Title Forum Replies Date
toysrrus TR4/4A My TR4 got "CRUNCHED" Today!!!!! Need Door!!!!! Triumph 46
AngliaGT Got Lucky Today - CHECK THOSE BOLTS! Spridgets 6
AngliaGT MGB FINALLY Got the Engine Out MG 5
DrEntropy Just got a new book Lotus 3
AngliaGT Got a Lot of Waves Today Spridgets 3
S Pre-War my hood problem got worse! Triumph 6
jackq General MG Got a room full of MGs MG 11
T TR4/4A Why is the new voltage stabilizer I got marked with 'top"? Triumph 4
Jim B. T-Series I got a trophy MG 8
V TR4/4A Learned to drive in my father's 1958 TR3 58 years ago, never got over it Triumph 3
simon1966 Rain cleared up so finally got out. Austin Healey 31
A TR2/3/3A TR3 Gods were good to me, got pistons out of calipers today Triumph 1
S TR2/3/3A got this with my last project car Triumph 2
davester Just got my Sprite back [in pieces] after 42 years...need advice Spridgets 8
N Just got back... Spridgets 0
AngliaGT Got A New Tow Vehicle Other Cars 5
Jim_Gruber New Shoes, New Shoes Bugsy got to show off his new shoes today. Spridgets 6
T TR2/3/3A What is best way to flush engine after antifreeze got in oil?? Triumph 2
D TR2/3/3A Someone got a deal on e bay Triumph 5
simon1966 Anyone got a 100 being transported? Austin Healey 10
vette Guess What I Got For My Birthday? Austin Healey 5
dougie Your Got to Love this Jaguar 4
Mickey Richaud General MG Got a Spare $2000? MG 6
B MGB Got the Vredesteins! MG 8
D TR2/3/3A Now realize what a deal I got with my TR3 Triumph 14
anarchy99 A NEW [OLD] toy just got delivered to the house... Other Cars 10
AN5Sprite How My Sprite Got Me Through A Blizzard... Spridgets 6
trrdster2000 GT6 Finally got a photo of some of our work on the Spit 6 Triumph 2
steveg Odd problem but it got me home! Austin Healey 9
F J hooks an wing nuts for attaching hard top to body BT-7 - anyone got photos? Austin Healey 5
bugedd Got her leveled out, now with different wheels Spridgets 11
RickB MGB Bought 1980 MGB and got it home - head gasket? MG 15
K Wedge Got A Wedgie.. Triumph 15
bugedd Got some wheels Spridgets 20
B TR2/3/3A I think I've got the wrong seats. Now what? Triumph 13
J Got a new tool for Xmas, tested it this week Restoration & Tools 5
C New Guy here, Just got killer news Austin Healey 18
P AH BJ8 hood frame spring where I got hooked Austin Healey 3
I TR6 Got in a wreck - need some help on who to take it to and what to check Triumph 48
B Got permission to sell Audry's 1972 Clubman British Motor Corp 3
drooartz Off Topic Got to say, I'm thankful for Moss Motors MG 5
dcoplan I've got a twisted camshaft-to-oil pump pin. How to fix?? Spridgets 1
catfood We got visited Spotted 6
F MGB Finally got my 78 MGB on the road MG 5
S Got my Heritage Certificate Spridgets 2
T TR2/3/3A Time for a Battery, what ya got? Triumph 15
WillR MGB Got the call this morning! MG 6
drambuie Look what I got for Christmas! Austin Healey 12
J Got my Heritage certificate but nothing new came on the sheet British Motor Corp 2
E Got the side exit exhaust installed on my Austin Healey-Video Austin Healey 21

Similar threads

Top