GP compression test adapter
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Lead Driver
Joined: Jun 2013
Posts: 5,648
Likes: 893
From: north of Minneapolis, MN
The R&D piece
For some reason I had thought a piece of 3/8" steel hex would make this. But no, it needs to be 7/16". I started this with a piece of 5/8" round brass. Brass because it's highly machinable and forgiving of programing mistakes. I bought it over to a Bridgeport and milled the flats on. Future parts will be from hex though. It's 5" OAL...I see if it's long enough, or too long on Sunday.
Still looking for mooch a 12-36 plug tap for the schrader valve. If I have to buy one I will...but it's like $30 or so.
Still looking for mooch a 12-36 plug tap for the schrader valve. If I have to buy one I will...but it's like $30 or so.
Lead Driver
Joined: Jun 2004
Posts: 6,361
Likes: 593
From: Amarillo, TEXAS!
Dan, don't forget it needs to be high enough for the quick connect to clear the rocker arm at the cam's highest lift point. I can measure on Monday if you need the height above the tip of the pin on the glow plug.
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Lead Driver
Joined: Jun 2013
Posts: 5,648
Likes: 893
From: north of Minneapolis, MN
That would be good. This rev is 1 1/4" longer than a GP, from seat to tip of elec connector.
Lead Driver
Joined: Jun 2004
Posts: 6,361
Likes: 593
From: Amarillo, TEXAS!
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Dan,
Thank you so much for the work. This is gonna be a really awesome tool for the tool box. Thank you for all your hard work. So what are you thinking price wise?
Tried to rep ya, but they got me locked down.
Thank you so much for the work. This is gonna be a really awesome tool for the tool box. Thank you for all your hard work. So what are you thinking price wise?
Tried to rep ya, but they got me locked down.
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
I actually did a compression test today, with my small fitting and whip. Still like the whip due to the flexibility, not sure a straight fitting will work unless you narrow it in the center to allow room for the rockers, and then your hex atop that. But I like that you are trying offer an alternative.
What height would you like? I have 3 motors out of trucks sitting here...
It's 3 1/2" minimum, then plus whatever the lift of the lifters is, from the seat of the head that the glow plug seats to the top of the rocker arm.
What height would you like? I have 3 motors out of trucks sitting here...
It's 3 1/2" minimum, then plus whatever the lift of the lifters is, from the seat of the head that the glow plug seats to the top of the rocker arm.
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
If that's the way you want to do it, like I do, Parker #M10-1/8F8OHGS fitting will accomplish this, then you just need a 1/8" barrel for the other end of the whip to thread the quick connect into.
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Lead Driver
Joined: Jun 2013
Posts: 5,648
Likes: 893
From: north of Minneapolis, MN
Well.....there is a reason I didn't purchase a bar of stock and saw it up into blanks. The comment about a reduced center section opened my eyes.
Just so we're clear...this isn't hard work. This is something that you do while you're changing from one production part to the next....and it's a heck'of'alot more fun than making the same part you've been making for the last 15 years.
It very well may be the "best" solution is the M10 ORB fitting and the grease whip....I'll know today. The Ford diesel adapter in the small HF kit is for IDI....and it won't seal properly on the newer 7.3. Maybe my longer adapter with a 1/8 MPT, then the "barrel" to a grease whip. I don't have a 1/8" MPT die, so I'd have to program a tool path to single point that thread....And I just didn't want to develop one.
I would just think a longer piece "should" work..after all the GP goes in there and you have to use a deep socket on an extension to get the GP out.
Just so we're clear...this isn't hard work. This is something that you do while you're changing from one production part to the next....and it's a heck'of'alot more fun than making the same part you've been making for the last 15 years.
It very well may be the "best" solution is the M10 ORB fitting and the grease whip....I'll know today. The Ford diesel adapter in the small HF kit is for IDI....and it won't seal properly on the newer 7.3. Maybe my longer adapter with a 1/8 MPT, then the "barrel" to a grease whip. I don't have a 1/8" MPT die, so I'd have to program a tool path to single point that thread....And I just didn't want to develop one.
I would just think a longer piece "should" work..after all the GP goes in there and you have to use a deep socket on an extension to get the GP out.