75 2.0 head, Picture of the air injection port |
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75 2.0 head, Picture of the air injection port |
glens67 |
Feb 24 2012, 05:02 PM
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#1
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Newbie Group: Members Posts: 35 Joined: 13-March 10 From: Middleton, ID Member No.: 11,462 Region Association: Rocky Mountains |
The Smog port? I'm pluging the injection port. Does it line up with the valve?
I could not find 10 X 1.0mm 45 mm long socket head cap screws, so I cut the heads off of some regular cap screws and RTV sealed them. the 17mm head interfered with the intake manifold. Should of just ground the cap round and cut a screw slot. Thanks |
VaccaRabite |
Feb 24 2012, 05:34 PM
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#2
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
RTV? I doubt that will hold. There is fire under them if you did what I think you did.
Www.mcmastercarr.com. Try looking there. Or google Metric Hardware and see if you can find them that way. Don't use RTV and introduce a big leak. Zach |
glens67 |
Feb 24 2012, 05:51 PM
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#3
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Newbie Group: Members Posts: 35 Joined: 13-March 10 From: Middleton, ID Member No.: 11,462 Region Association: Rocky Mountains |
Thanks Zack.
Did not like the way I installed the plugs. I did check McMaster Car and Grainger, no 10X1.0mm X 47 long Socket head cap screws. For that matter 10X1.0mm seems to be kind of an oddball size. I have a a Fastenal Store near me. They don't list The socket head Cap screws. Back to Grinding the 17mm heads down to clear the intake runner flange. Glen |
76-914 |
Feb 24 2012, 09:56 PM
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#4
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,513 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Why soooooooo long 45mm??? Mine looked like regular short allens, when I rebuilt one car. I guess the PO had installed them at rebuild with a long hex. On my other car I left the nipples in the head and put 3/8"npt caps on them. (IMG:style_emoticons/default/beerchug.gif)
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euro911 |
Feb 24 2012, 11:01 PM
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#5
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
The ones on my old '75 heads were Allen set-screws, 3/4 " or 1" long at the max.
I have no idea where they came from (a PO installed them), but I'd think any good hardware store with a decent 'Bolt Room' would carry them. |
glens67 |
Feb 25 2012, 01:44 AM
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#6
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Newbie Group: Members Posts: 35 Joined: 13-March 10 From: Middleton, ID Member No.: 11,462 Region Association: Rocky Mountains |
Are there pictures of the exhaust port that show the injection point. What I don't want to do is run a screw into a valve.
Thanks |
76-914 |
Feb 25 2012, 08:21 AM
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#7
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,513 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
1-Are your heads still on the car?
2-Do you still have the nipples? 3-What do you mean by injection point because I don't want to say "right in front of the intake valve". (IMG:style_emoticons/default/biggrin.gif) |
Tom |
Feb 25 2012, 08:32 AM
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#8
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
I try to make mods that are easily reversible, so here is what I did.
Tom Attached thumbnail(s) Attached image(s) |
SLITS |
Feb 25 2012, 08:33 AM
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#9
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
You won't hit a valve. If you have the old injection pipe, look at the length of the thread and match that depth as the pipe bottoms when it runs out of thread. The pipe is only threaded less than an inch as I remember. And the hole is in the exhaust port ............
A 3/8" NPT pipe cap may look funky, but it works very nice. I did mine that way and it went 5K before I sold the car. I did have one loosen and come off ... makes a hell of a racket (IMG:style_emoticons/default/laugh.gif) |
jimkelly |
Feb 25 2012, 08:36 AM
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#10
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
oh - i see.
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glens67 |
Feb 25 2012, 11:41 AM
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#11
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Newbie Group: Members Posts: 35 Joined: 13-March 10 From: Middleton, ID Member No.: 11,462 Region Association: Rocky Mountains |
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euro911 |
Feb 25 2012, 12:10 PM
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#12
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
I had the Allen 'plug' at cyl #1 come out once. I didn't realize it was the Allen at first, I thought I just had an exhaust leak. (which it actually is, being that it's an air-injection port bore going down into into the exhaust port just beyond the valve).
At first, I removed the muffler and left HE and replaced the copper exhaust seals, but still had the leak (IMG:style_emoticons/default/WTF.gif) Next, I checked it at night and saw flames shooting out of the port. I looked around and found the Allen laying on the engine shelf. I removed all of the plugs and added a small dab of blue lok-tite when I reinstalled them. |
glens67 |
Feb 28 2012, 10:53 AM
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#13
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Newbie Group: Members Posts: 35 Joined: 13-March 10 From: Middleton, ID Member No.: 11,462 Region Association: Rocky Mountains |
Ok too much thinking. #1 cylinder port threads were stripped. Got the calipers out and found that 1/8" allen head pipe plugs were slightly larger in diameter, and the threads were close to the same pitch, so installed them. Problem solved.
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ConeDodger |
Feb 29 2012, 11:47 AM
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#14
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Apex killer! Group: Members Posts: 23,622 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California |
RTV will not hold.
Try this. Cut the injection lines about an inch out and pinch them shut. Then braze them to seal them. Or, pull the heads and have them welded up. (IMG:style_emoticons/default/biggrin.gif) |
Mark Henry |
Feb 29 2012, 12:29 PM
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#15
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
10mm valve adjuster screws will work.
I just left the smog tube heads on, so I'd have something to wrench upon and MIG welded the tubes shut. |
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