End-all Be-all plenum thread
Champion
Joined: Jun 2012
Posts: 3,096
Likes: 2
From: Iowa
Yeah grade 5 would have been sufficient, however I had to get whatever bolts they had, and the only ones to match were grade 8! LOL.
Captain
Joined: Jun 2012
Posts: 683
Likes: 1
From: East Coast
...andcI'm will never discuss TTY b's again 
Legend
Joined: Jul 2011
Posts: 8,259
Likes: 4
From: Austin, TX
There is some debate on whether or not the intake bolts are TTY..... Service manual doesn't mention anything about it..... neither do any of the 'off-brand' manuals.... one would think that would be a pretty significant detail to neglect to mention.
I don't think they are TTY, I think they are just cheap assed chinese bolts... and replacing them really isn't a bad idea.... getting some good grade 5 or 8 bolts to replace them, and THOSE you could reuse.
I don't think they are TTY, I think they are just cheap assed chinese bolts... and replacing them really isn't a bad idea.... getting some good grade 5 or 8 bolts to replace them, and THOSE you could reuse.
According to ASME and SAE, TTy bolts are NOT threaded the entire length, and are heat treated on the unthreaded portion of the shank.
All bolts have a torque spec, it's just that not all applications have a spec indicated.
ASTM A307
And grade 8 is certainly overkill, as it is not clamping a significant load in this application....but it won't hurt anything....
Champion
Joined: Jun 2012
Posts: 3,096
Likes: 2
From: Iowa
Great info gdstock. Yeah I know those were overkill on bolts but that was all my supplier had at the time... Just to clarify for everyone, TTY bolts aren't threaded all the way down, but not all bolts that aren't threaded down all the way are TTY.
Registered User
Joined: Sep 2012
Posts: 22
Likes: 0
From: Minnesota
I removed the intake manifold and plenum plate yesterday with the fuel rail still attached. Should I clean the injectors while in place? If so, with what and how?
I'd rather not risk cracking an injector so I'm leaving them and the rail in place.
I'd rather not risk cracking an injector so I'm leaving them and the rail in place.
Champion
Joined: Sep 2011
Posts: 3,891
Likes: 8
From: NorCal
Make sure you post pictures of your actual plenum gasket!!
https://dodgeforum.com/forum/2nd-gen...s-post-up.html
It's not absolutely necessary to pull and clean the injectors, but certainly would not hurt. If you do that, then you should get new orings that go on the injectors. Very cheap though. Actually, that's all I did was change out the orings.
Registered User
Joined: Sep 2012
Posts: 22
Likes: 0
From: Minnesota
Make sure you post pictures of your actual plenum gasket!!
https://dodgeforum.com/forum/2nd-gen...s-post-up.html
It's not absolutely necessary to pull and clean the injectors, but certainly would not hurt. If you do that, then you should get new orings that go on the injectors. Very cheap though. Actually, that's all I did was change out the orings.
https://dodgeforum.com/forum/2nd-gen...s-post-up.html
It's not absolutely necessary to pull and clean the injectors, but certainly would not hurt. If you do that, then you should get new orings that go on the injectors. Very cheap though. Actually, that's all I did was change out the orings.
and I will for sure post pictures of the plenum gasket, it clearly blew out at least four areas with only 106,000 miles.
Quick question, I got the hughes kit and it came with red locktite on the plenum bolts. Do I need to add blue locktite to that also? And should I add blue locktite to the intake manifold bolts at all?
Record Breaker
Joined: Dec 2008
Posts: 1,200
Likes: 1
From: Claremont NC
I would argue it isn't worth the risk of breaking a $50 injector if all I'd be doing is changing the o-rings.
and I will for sure post pictures of the plenum gasket, it clearly blew out at least four areas with only 106,000 miles.
Quick question, I got the hughes kit and it came with red locktite on the plenum bolts. Do I need to add blue locktite to that also? And should I add blue locktite to the intake manifold bolts at all?
and I will for sure post pictures of the plenum gasket, it clearly blew out at least four areas with only 106,000 miles.
Quick question, I got the hughes kit and it came with red locktite on the plenum bolts. Do I need to add blue locktite to that also? And should I add blue locktite to the intake manifold bolts at all?