TR2/3/3A oil pan bolts

[MKN]

looking to work on my TR3A oil pan. There are 19 bolts. Moss looks to 17/18 of one type, and 2/1 of another. Any idea which 2 (or 1?) are different and why different?

 

[bobhustead]

from the moss website, the longer bolt goes thru the support brace for the clutch slave mounting flange.
Bob

 

[Joel Lester]

The different bolt length(s) is to mount your breather down tube in it's location. Pretty sure it only fits one way...

Joel

 

[Hamish Racing]

All I can say for sure is this is the pattern I took off mine before fitting the aluminium sump.
One long where the rod that is the slave cylinder stay is attached to the sump bolt.
I cannot guarantee it’s original.

 

[bobhustead]

Harnish said it better. Picture worth 1000. The same bolt does also appear to be used on the breather, per the moss site, but I don't think it goes thru the oil pan flange.
Bob

 

[MKN]

The different bolt length(s) is to mount your breather down tube in it's location. Pretty sure it only fits one way...

Joel

thanks a bunch! really appreciated

 

[MKN]

Harnish said it better. Picture worth 1000. The same bolt does also appear to be used on the breather, per the moss site, but I don't think it goes thru the oil pan flange.
Bob

Thanks Bob

 

[MKN]

All I can say for sure is this is the pattern I took off mine before fitting the aluminium sump.
One long where the rod that is the slave cylinder stay is attached to the sump bolt.
I cannot guarantee it’s original.

thank you Hamish

 

[Sarastro]

It's really not that critical. Most are through holes, so lenght is not critical For the rest, you can use anything that fits.

 

[MKN]

It's really not that critical. Most are through holes, so lenght is not critical For the rest, you can use anything that fits.

Thanks!

 

[Hamish Racing]

It's really not that critical. Most are through holes, so lenght is not critical For the rest, you can use anything that fits.

You don’t want too long bolts in the end bridge block as they are only Ali and will pull the thread if too long and you try and pull the pan up tight. At the side it doesn’t matter as they are through holes.
Also f you try the thicker cork gasket forget the torque setting 14-16ftlb I think??as it will distort the gasket a lot.
just comfortably tight to seal is enough

 

[bobhustead]

To follow on Harnish's slight expansion of the topic, prepare your pan for installation with moderate ball-peen hammer blows to each hole on the flange, from the top of the pan, so as to remove any upward distortion of the holes caused in previous installations. And rest the pan flange on a block of wood as you hammer.
Bob

 

[sp53]

Hey Hammish I was looking at your picture and did you shorten the breather pipe for racing. If so, does the shorter pipe have any effects on anything?

steve

 

[Hamish Racing]

Hey Hammish I was looking at your picture and did you shorten the breather pipe for racing. If so, does the shorter pipe have any effects on anything?

steve

Steve
The PO did it
Cut at the top of the up direction so no return direction to the road.
It’s connected to a vent tank that also takes valve cover vapour.
The new engine has the block vent sealed and the breather comes off where the fuel pump was.

 

[RJS]

Totally agree with Hamish on torque setting on cork gasket. Ask me how I know &%#!

Bob

 

[sp53]

Sorry for liberating the thread, so Hammish then your car does not drip oil at all because you catch the drips in a container?

 

[Hamish Racing]

The vapour is captured and the engine- rather the crank case has no pressure thus no oil forced out on the crank seals.
the old engine still left it’s mark after 10’s thousands of miles many in competition.

the new engine is clean