• 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

Aluminium sump and the effect on oil capacity

Bob Hughes

Luke Skywalker
Country flag
Offline
Hi Guys

Last year I rebuilt the engine on my BJ7, part of the rebuild involved replacing the sump with a Dennis Welch aluminium sump.

When it came to putting the slippery stuff into the engine I noticed that the dip stick was showing oil up to the mark after only 8 imperial pints.

After phoning DW to enquire about this I was told that I would have to cut the bottom off the dip stick to clear the sump, and that was about it.

This is a nonsense as the dip stick clearly clears the bottom of the sump.

My local Healey chap said that if I was worried about it, just put in the other 4 as racing Healeys often had up to 18 pints in at the start of a race.

Ultimately I put the full charge of 12 Imp pints in, but wonder if this is really necessary, as in my mind the crankshaft could now be stirring the oil.

Have any of you guys who have these sumps noticed the phenomena and how much oil do you put in? Would putting in only 8 cause a problem?

:cheers:

Bob
 

DerekJ

Luke Skywalker
Country flag
Offline
Bob,I believe their aluminium sump is smaller capacity but I also got a muddled answer from them when I asked the question. I think it depends on who you get on the phone, that's not an excuse as they should all know the right answer. I think I ended up with about 5.5 litres in there, which is a litre less than 12 pints (I think).
 
OP
B

Bob Hughes

Luke Skywalker
Country flag
Offline
Thanks Derek

I am using Penrite's finest so it is not cheap so using 8 pints will save a few pounds.

What are your thoughts of over running the crank with oil effecting tick over?

:cheers:

Bob
 

busybrit

Jedi Hopeful
Offline
As long as your dip stick doesn't touch the bottom of the oil pan, which would effectively raise the min/max level marks it shouldn't be a problem.

If it does touch, you would have to cut a bit off until it doesn't.

Then fill the beast up using the original marks on the dip stick.

FYI, I have a DW sump, "oil pan as you guys call it" on my 100-4, it takes more oil that the std sump.
 

Stretch

Jedi Trainee
Offline
I don't think you should fill the sump any higher than the level a properly seated dip stick indicates because that would affect oil splashing. The splashing is part of the cam lubrication design and maybe some other things. It may affect oil foaming. I think all manufacturers caution against overfilling. Not sure of all the reasons.
 

CLEAH

Jedi Warrior
Country flag
Offline
Bob, It seems to me that since the oil pickup and the dipstick are both mounted to the engine and not the sump, you want to make sure you only put in as much oil as the dipstick indicates. The dipstick is measuring oil relative to the bottom of the engine, not how much oil there is by volume. As long as there is oil at the mark, there is sufficient oil for the engine. Where you might have a problem is if you run the oil very very low, the original sump may be more forgiving of that situation since there is more oil sloshing around before it starves, but that would only be a factor in a completely un-maintained car.

I'm with Stretch: fill it to the mark, and don't overfill it.
 
Similar threads
Thread starter Title Forum Replies Date
Simmo MGA Aluminium Radiator AUSTRALIA MG 4
simon1966 The jigsaw puzzle in Aluminium and Steel Commences. Austin Healey 7
M TR4/4A Where to buy this aluminium extrusion? Triumph 7
Bob_Spidell Aluminium Pan Austin Healey 18
B Aluminium Bonnet and Boot Lid Austin Healey 6
Xte BJ8 sills aluminium and draught excluder Austin Healey 0
M BT7 Aluminium Door Trim Austin Healey 1
Jeepster Steel or aluminium fuel tank Austin Healey 8
Frankenhealey Aluminium everything - weight saving? Austin Healey 3
N Aluminium facing on sills and shut pillar, BJ8 Austin Healey 7
H Aluminium oil pan Austin Healey 9
R Aluminium and paint bubbling issues Austin Healey 12
JamesWilson NUTS! [refinishing Aluminium ones....] Restoration & Tools 8
G Q for anyone running an aluminium flywheel Triumph 10
AngliaGT Bead Blast Aluminium? Restoration & Tools 3
SCguy TR6 Aluminium Trim Rings for a TR6 Triumph 9
Tronch Renewing aluminium parts Austin Healey 7
ncbugeye Basics of how to restore aluminium stuff Spridgets 13
Tinkerman TR2/3/3A TR3 Aluminium Parts Triumph 22
A Front - Rear wings/fenders Aluminium or Steel Austin Healey 6
78Z Aluminium body panels, On the new Jag XJ Jaguar 3
Lin Oil sump sealant question Spridgets 0
Lin Oil sump torque value? Spridgets 3
Walter74 Oil sump AH spares Austin Healey 5
M Sump Plug Austin Healey 26
M Sump Installation Spridgets 2
F Sump Gasket Question Austin Healey 15
D TR2/3/3A Hints on sealing the sump gasket. Triumph 28
Lin Oil sump gasket replacement Austin Healey 31
Healey Nut 3000 oil sump pans Austin Healey 16
R Proper Aluminum Sump Installation Austin Healey 13
Michael Oritt Strange debris found in sump Austin Healey 19
J TR6 Thrust washers in sump Triumph 4
T TR2/3/3A Should I put flat washers on sump bolts? Triumph 3
T General TR How does Permatex Permashield compare to Hylomar for sump sealant? Triumph 5
J Denis Welch Aluminum Sump and H/C Oil Pump clearance Austin Healey 18
M TR2/3/3A TR3 TR4 oil capacity with aluminum sump Triumph 1
Dudly Sump and timing cover gaskets Triumph 1
TomMull Sump pan with no baffle? Triumph 2
abarth69 Dry Sump BMC Engine Spridgets 3
T XK Engine Sump Pan Jaguar 9
OZ_BN1 Sump Plug Austin Healey 0
H TR2/3/3A Oil Sump Thread size TR3A Triumph 4
Westfield_XI Evacu-sump installation Spridgets 5
Westfield_XI Evacu-sump installation questions Spridgets 4
newmexTR3 TR 2/3/4 aluminum sump gasket Triumph 4
B Oval sump washer orientation Austin Healey 2
H TR2/3/3A TR3A Oil sump drain plug [Thread zize] Triumph 2
2wrench Help. Leak from sump cover on bottom of J-OD Triumph 31
Scott_Hower MGB MGB sump removal .. must I drop the xmember? MG 13

Similar threads

Top