scavenging pump orientation

[Gilles]

A question for JFP...

Which of the two ports is closest to the crankshaft? The larger one (38x12mm) or the smaller one (35x10mm)

I removed the cam cover to replace the green seals (spark plug holes) and of course I didn't mark the position of the pump..

[Gelbster]

Which Bank are you working on? It makes a difference !
Check the classic long Post by Insite on camshaft allocation.
You are looking at the wrong side of the pump. Flip it over .Note the 1-2 and the 4-6 marks. They are the key. not the holes on the back.

[Gilles]

This is for the 1-3 cylinder bank and you can align the ports in two different positions that are 180 degrees apart.
One port is larger than the other

[RodJ]

Page 15-20r of the engine workshop manual shows correct positioning of the scavenge pumps. In this case, the 1-3 marking must face the crankcase.

[Gelbster]

Originally Posted by Gilles

This is for the 1-3 cylinder bank and you can align the ports in two different positions that are 180 degrees apart.
One port is larger than the other

AS I said, forget the ports.You'll get muddled. Use the markings on the face- per the FSM. If Bank 1 the 1-3 marking faces/closest to the c/s
If Bank 2 4-6 faces the c/s.
Is the engine in the car? If so this is a horrid job because of access and visibility. When you lock the c/s be meticulous about it because you can't see the marks head -on.It is very easy to produce a slight camshaft deviation(check with Durametric) then you get to do it all over again - with new O rings and green plugs !
Good Luck and let us know?

[Gilles]

Originally Posted by RodJ

Page 15-20r of the engine workshop manual shows correct positioning of the scavenge pumps. In this case, the 1-3 marking must face the crankcase.

Hello RodJ,

Thank you for the picture, and the comments from Gelbster.

Last night I installed the scavenging pump and slowly finishing the project, I just need to wait for the o-rings for the chain tensioners and the engine/gearbox will be complete.

Today I will install the coilovers as these were sent back from KW (for rebuild) last week, can hardly wait because I miss driving my car..

[richardfreeman812]

I know this is an old thread but I have a question. What are the steps to changing the scavenge pump O-ring?

[maytag]

Originally Posted by richardfreeman812

I know this is an old thread but I have a question. What are the steps to changing the scavenge pump O-ring?

It's pretty straightforward.
Mark the cover so you put it back in the correct orientation.
4 bolts, catch the oil as you pull/pry it out.
Swap the o- ring. Put it back in. Bolt it up.

BOOM.

And then put me on your ignore list.... ;-)

Minor edit; don't forget to pay attention to the keyed slot in the back of the pump. As long as you don't disturb anything, it'll go right back on in the same orientation.

[Racer Boy]

Yep, Maytag is correct. It's a pretty easy job.

If you don't get the pump oriented correctly, you will have a lot of trouble with giant smoke bombs if you track the car. Don't ask me how I know.

I didn't make the mistake, it was that way when I bought the car. I took me a long time to figure out what was wrong!

[richardfreeman812]

Originally Posted by Racer Boy

Yep, Maytag is correct. It's a pretty easy job.

If you don't get the pump oriented correctly, you will have a lot of trouble with giant smoke bombs if you track the car. Don't ask me how I know.

I didn't make the mistake, it was that way when I bought the car. I took me a long time to figure out what was wrong!

Any idea of the torque spec?

[Racer Boy]

It's in the manual, 10 ft lbs.