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Old 01-29-2013, 11:24 PM   #1
beaviscih
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I'm doing a 1.8L to 2.5L swap (EJ253 block with EJ251 pistons and '97-'99 heads, shim over bucket). I was mounting the heads this evening I noticed the EGR port on the drivers head which i completely forgot about...doh. Unfortunately I don't have an EGR bolt/pipe laying around.

Can anyone tell me the thread pitch and size needed to block this off? All my EGR searches didn't help. Here's a picture.

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Last edited by beaviscih; 01-29-2013 at 11:31 PM.
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Old 01-30-2013, 12:34 AM   #2
mod maniac
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I think it is 19mm.
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Old 01-30-2013, 01:39 PM   #3
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I had to do some digging, but I knew I had figured it out at one point. 16mm-1.5 is the thread size.
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Old 01-30-2013, 08:21 PM   #4
mod maniac
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There are two sizes of egr tubes One is 16mm-1.5 the other is 19mm-1.5.
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Old 01-30-2013, 10:08 PM   #5
beaviscih
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Quote:
Originally Posted by Patrick Olsen View Post
I had to do some digging, but I knew I had figured it out at one point. 16mm-1.5 is the thread size.
Quote:
Originally Posted by mod maniac View Post
There are two sizes of egr tubes One is 16mm-1.5 the other is 19mm-1.5.
Excellent, thanks for the quick replies. I need to finish this engine since I'm only a month out from the first race of the season.

Had to share...got the car back from my cage guy. He removed the X-bar and and put in this purdy NASCAR bar FTW.




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Old 01-31-2013, 02:29 AM   #6
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If you still have the egr pipe, you can cut it short, crimp and weld the end. or you can remove the nut and tap the inside of it for an M10 or M12 bolt, then cap it off that way.
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Old 01-31-2013, 05:58 PM   #7
beaviscih
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Quote:
Originally Posted by Storm View Post
If you still have the egr pipe, you can cut it short, crimp and weld the end. or you can remove the nut and tap the inside of it for an M10 or M12 bolt, then cap it off that way.
I have the EGR pipe from the '08 EJ253 heads so it won't fit the earlier model heads Ill be using otherwise I'd do exactly like you suggested.

Oh, thanks for the tip on the EJ251 pistons. I installed them in the '08 EJ253 block last weekend with no issues.
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Old 02-01-2013, 08:02 AM   #8
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Coolio! Enjoy!!!

Jay
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