Help on Tapping Oil Pan and Fitting Sizes?
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SVicksTC



Joined: 26 Mar 2007
Posts: 662
Location: NeverLand Ranch

Posted: 8/17/08 7:54AM    Post subject: Help on Tapping Oil Pan and Fitting Sizes?  

Hey i was wondering if anyone can help me out i have a ZPI Stage 1 turbo kit with the evo 16g turbo and was wondering what size hole i have to drill to tap my oil pan and what size tap do i need?

Also i need to know what size L fitting i need coming out of the pan etc....


Any help would be great.....
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/17/08 9:28AM    Post subject:  

NO L-fitting....you need a straight fitting to the oil pan. I'd go with a 3/8 NPT fitting or have a bung w/ a 5/8 inlet welded to your pan. I used the 3/8 npt fitting, tapped the hole, and then JB-Welded it to the pan. GOD himself couldn't remove it or make it leak!
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Ace83



Joined: 26 Aug 2006
Posts: 5585
Location: TX

Posted: 8/17/08 9:32AM    Post subject:  

^^ yup dont use an L fitting, get a straight bung that fits your oil line.. JB weld is good stuff or you can use red rtv but God can make it leak easily lol, God sank the Titanic.. :P
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/17/08 9:40AM    Post subject:  

LOLOL!!!
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Ace83



Joined: 26 Aug 2006
Posts: 5585
Location: TX

Posted: 8/17/08 9:43AM    Post subject:  

also remember to tap it as high as possible to prevent restriction or backflow to the turbo
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/17/08 9:46AM    Post subject:  

...and you don't want a bunch of slack in the return line either. Just make it a gradual and kink-free connection.
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SVicksTC



Joined: 26 Mar 2007
Posts: 662
Location: NeverLand Ranch

Posted: 8/17/08 10:00AM    Post subject:  

thank you guys for the quick responses im tryin to get boosted here and oil pan is my only concern.... so thanks
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aen



Joined: 11 Aug 2006
Posts: 4111

Posted: 8/17/08 10:08AM    Post subject:  

don't worry about hte oil pan, if it leaks, repair it. you won't lose enough oil to break your car as long as you watch it.
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/17/08 10:12AM    Post subject:  

I'm a bit more anal when it comes to the details....
Do it once...do it right...have a beer! :P
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/17/08 10:18AM    Post subject:  

Repeat....

Repeat....

Repeat...
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SVicksTC



Joined: 26 Mar 2007
Posts: 662
Location: NeverLand Ranch

Posted: 8/17/08 5:43PM    Post subject:  

i dont have a braided oil return line...so just drill a 1/2 hole then tap it to 3/8'' and get a 3/8'' NPT straight fitting and JB Weld it and run the oil return line?

Starting Project Tomorrow
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SVicksTC



Joined: 26 Mar 2007
Posts: 662
Location: NeverLand Ranch

Posted: 8/17/08 7:15PM    Post subject:  

bump
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/18/08 2:15AM    Post subject:  

There are several ways to do this. The best way would be to remove the oil pan from the car and have the bung welded in. I, personally, used the method in the turbonetics instruction manual (except I used JB Weld instead of silicone)

The directions can be found here:

http://www.turboneticsinc.com/technology/index.php?section=68

It's a bit complicated to explain, but basically you punch a hole in the pan, then tap the hole using the rolled metal from the hole you punched. After that, you simply thread the fitting into the oil pan!

Download the instructions. It has photos and a more involved description (on page 18 )

Hope this helps! Oh, and make sure to heed what Ace83 said. Make SURE you tap it high enough or the oil returning from the turbo will back up in the line and bad things could happen!
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SVicksTC



Joined: 26 Mar 2007
Posts: 662
Location: NeverLand Ranch

Posted: 8/18/08 5:51AM    Post subject:  

thanks will be starting today.....
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B_Real45



Joined: 14 Dec 2007
Posts: 1247
Location: South Florida

Posted: 8/18/08 5:55AM    Post subject:  

I just wanted to add..

Don't drill a 1/2" hole to tap a 3/8" fitting.

Your hole will be bigger than the tap. Use your tap as a gauge to which drill bit you'll use.. then use the tap.
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/18/08 2:24PM    Post subject:  

B_Real45 wrote: I just wanted to add..

Don't drill a 1/2" hole to tap a 3/8" fitting.

Your hole will be bigger than the tap. Use your tap as a gauge to which drill bit you'll use.. then use the tap.

I would avoid drilling anything if the oil pan is still on the car. The shavings are going where?....straight into the oil. Plus, if you DO drill, there will be bupkis to tap anyway. :P Either use the punch...then tap, or take the oil pan OFF (which is a major pain from what I've heard) and have a fitting welded to it in the proper location.

A third option ,and perhaps what B_Real45 may be suggesting, is drilling the hole, tapping with threads to tighten, and gooping it up with JB Weld. This will work just fine as long as you remove the pan before drilling!
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B_Real45



Joined: 14 Dec 2007
Posts: 1247
Location: South Florida

Posted: 8/18/08 2:32PM    Post subject:  

Yep - and that's what I'll be doing..

I'll use the punch provided, tap the hole, then for extra precaution, JB weld that mofo.
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paulky_2000



Joined: 21 Aug 2007
Posts: 1105
Location: Bowling Green, KY

Posted: 8/18/08 2:36PM    Post subject:  

B_Real45 wrote: Yep - and that's what I'll be doing..

I'll use the punch provided, tap the hole, then for extra precaution, JB weld that mofo.

Amen, brother! :bow:
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