How do I tap a type 1 engine for the mustache bar..ive searched

[Dkwautounion]

I've searched for the last few weeks and can't find good instructions on this . Theres some older threads but the pics are gone. I also bought the little cheap adapter from empi...but it's junk and I don't want to use it. Any help would be great .

[Starbucket]

It's the special bus case or a "universal case" that has the tapped holes. Take your cheap china Empi adaptor and make a thick one using those dim.s and if it's the one that mounts to the oil pump studs, drill and tap the pump holes to a larger size.

[rockerarm]

Hi and WELCOME.
Before you use some poor advice and start drilling PLEASE show a pic of the rear of your engine case in the area surrounding the oil pump. Many cases were not dedicated for type 2 or type 3 use BUT had the bosses/provisions for the drilling and installing of an insert there. If so this is a relatively easy task.

Hope this helps.

[SGKent]

[Dkwautounion]

I have a case from a 73 beetle and it can be tapped.

[Dkwautounion]

I know it looks threaded in there but it's just a nut back there .

[richparker]

Fine machine work like that should be done before a build. I think you'd have better luck using the oil pump bracket.
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[busdaddy]

That adaptor makes an ideal drill guide, VW put inserts in the holes opposed to just a steel bolt VS: magnesium alloy, consider a Timesert or other full sleeve style insert (avoid Helicoil), don't drill deeper than a couple extra threads, some of those holes have oil behind them.
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[Dkwautounion]

Where would I get the inserts?

[busdaddy]

Your local FLAPS or a hardware supply store like Mcmaster carr. Timesert may have been a little extreme, but definitely avoid loose coils like most Helicoil products. Raygreenwood has some very enlightening posts on the topic and science of inserts, do some searching using his name as the submitter, here's an example: https://www.thesamba.com/vw/forum/viewtopic.php?t=666373
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[Dkwautounion]

Big thanks I have a good hardware store near the house I will head to tomorrow. Do I still use the same size bolt that I would normally use if the case came tapped from the factory ?

[busdaddy]

Why not?, it keeps things simple later.
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[Abscate]

This is kind of an expensive thing to learn how to do a tap/insert on. If you are near any big city, consider taking it to a shop for one hour of shop time to get this done. Use the resources here to make sure you get it marked in the right place
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[SGKent]

be VERY aware that not all engines have the bosses to drill for a mustache bar. Some have oil galleries and plugs instead of the thick bosses. The photo provided does not address whether this case will adapt or not.

If you do a search here in the bay forum https://www.thesamba.com/vw/forum/search.php?searc..._chars=200
you will get several threads that go into this quite a bit. Here is one post from within one of those threads that addresses the question.

[Dkwautounion]

So I took the adapter off and got another picture like someone asked. As you can see there's already a hole on the right side and it looks like the left side already has a snapped off bolt in a hole or was the case just machined that way . I bought this motor from a guy that had this engine in a Myers Manx for what it's worth .

[Dkwautounion]

So thanks to the people that gave me the tips and courage to go for it, I tapped the case today and Installed the inserts . I went to the store and bought the parts. 27 bucks for the m16x2.00 tap....yikes. it was pretty easy. Took me about 2 hours. I tapped the top right hole and snugged the mustache bar down and used the mustache bar for the guide where I wanted the other 2 holes. The EZ-loks were a snap. And yes, when you see chunks of case coming out busdaddy, the pucker factor is high. Lol. I had a tiny bit of the ez lok sticking out of the case so i knocked them down with my grinder .

[DougClink]

I need to do this, I think I can.
Can someone share the size of drill bit and insert?

Thanks!
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[busdaddy]

2 x M10 x 1.5 & 1 x M8 x 1.25 inserts, the drill will either come in the kits, or the size needed will be specified in the instructions for whatever brand and style you decide to use.
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[DougClink]

Thanks!

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[SGKent]

Que Paso?

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