*&%$# piston squirters

[boosted79]

This is bizarre. I took my cases to the machine shop to be cleaned. I checked all the squirters with compressed air before I sent them, all were fine except one which was stuck open. So I figured maybe it will clean up in the tank. I got the cases back and checked all the squirters again. The #1 squirter is still stuck open. But now I've got all three on the 4-6 case stuck closed?? The squirter drilling comes off the main bearing oil supply hole in the saddle right? I can see the hole to it just inside the saddle. I did the same as before, inserted a stud into the end of a hose and used it to plug the drilling from the saddle into the through bolt hole and applied air to the saddle hole. I went up to 120 psi and I get nothing from all three squirters!! Does anyone have a pic of these things? It's just a spring and a ball right? Does the ball seat on the drilling in the web with the spring on top of it and then the nozzle on top of the spring? I can get a spray wand from can of brakeleen into the drilling that goes directly to the squirter nozzle, maybe I should try a piece of wire down it to force open the ball? Crazy.

[boosted79]

I think I found a pic - looks like a tube with the spring and ball enclosed inside? So it's the whole assembly that gets replaced, not just the nozzle? I'm going to get some MEK.

[stownsen914]

Try soaking with some penetrant? Strange that soaking the case made it worse, but they could be gunked up with something. Penetrant could loosen it up possibly or dissolve any gunk in there.

[KTL]

Here's a couple threads to give you some visual help

Piston Squirters Again

Oil (piston) squirter......

Try Seafoam?

[boosted79]

The Seafoam worked on #4 and #6! But #5 still wouldn't budge so I had to take drastic measures. A piece of .025 MIG wire pushed into the squirter supply hole finally got the ball unstuck from the seat. #1 still leaks so I'm replacing it.

[afterburn 549]

Can i ask a dumb question?
Oil squirter target-
Where should it be aming?
Or, at what point in stroke where to his piston ?

[boosted79]

They point just about straight up from the top of the webs to the bottom of the pistons. The hole to the squirters intersects the hole supplying oil to the mains just inside the saddle surface so you can get a wire directly into the squirter hole. I had best luck with the mig wire, it's stiff yet can still be bent enough to direct it into the squirter hole. The syringe makes it easy to get the seafoam directly into the squirter hole.

[Mark Henry]

If you can't free them up they are not that hard to replace.

[afterburn 549]

Would it be rude to ask for directions?
What holds them in?

[boosted79]

They are held in by staking the web to deform the top of the hole that they fit in. A dremel and a slide hammer removes them.

[boosted79]

I guess so, I've never had one out. I'm pulling one out tomorrow though. Will post some pics.

[afterburn 549]

thanx !

[Mark Henry]

I drilled them and the bit got stuck in the squirter body, then I just yanked them out.
One I had to pull out with a wood screw.

[Mark Henry]

I doubt if this was needed but I put a tiny bead of loctite 620 around the squirter.
The peening tool I made from grinding an old center punch.

[boosted79]

Thanks, that looks easy enough. I'm just waiting for a parts shipment.
Your '67 Bug must fly with that monster engine. I've got a '65 double cab, all stock, needs an engine job.

[afterburn 549]

Thanx for all the info!
Should a jig be made to redrill the hole if need be? (to keep the streak of oil on target )

[KTL]

Mark's got the right approach- agrees with the almighty Porsche service manual. Here's a snapshot from the 993 manual

[Mark Henry]

Originally Posted by afterburn 549

Thanx for all the info!
Should a jig be made to redrill the hole if need be? (to keep the streak of oil on target )

I wouldn't redrill anything, unless you are making a jig to mod early cases for squirters.
Oversize I'd use a ream, maybe some sandpaper glued on a dowel. How much material is being removed for OS?

Anyways, I didn't have an issue needing OS squirters.

The factory manual says something about a 6mm tap I don't understand.
Is that for pulling the squirter out? (note, ok now I get it)
If so the #8 wood screw on a small slide hammer is all you need.

Loctite 620 and 640 are both sleeve fit retainer, but 620 is good to 450*F, where 640 is only rated at 350*F
I've used 620 for 25 years in aircooled engines with excellent results.

[Mark Henry]

Originally Posted by afterburn 549

I was thinking of putting squirters in something else...Looks pretty EZ

Type 1 or 4?

If you have real good oil pressure you can just notch the rods.

[Mark Henry]

Cool, pistons look a lot like the JE 102mm slugs in my VW bug.

You could just notch the rods with a .010 -to 015 notch filed aiming at the back of the piston. Oil pressure and centrifugal force will take care of the rest.