TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Curious Bolts on my Engine?

Thread Tools
 
Search this Thread
 
Old 05-26-2005, 10:37 AM
  #1  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT
Curious Bolts on my Engine?

This isnt really a question about TPI (I do have a TPI engine though) so it might have to be moved.

I have these weird Hex torque bolts all over the visible parts of my engine. Does anyone know if this was a factory thing? All the bolts on my intake manifold, for exampe, are round Hex bolts??

I want to find out because I was told this engine was rebuilt when I bought it but didnt believe them because of the buildup.

Thanks.
Old 05-26-2005, 11:51 AM
  #2  
Supreme Member

 
bnoon's Avatar
 
Join Date: Jan 2003
Location: West Des Moines, IA
Posts: 1,304
Likes: 0
Received 0 Likes on 0 Posts
Car: 2008.5 Mazdaspeed 3 GT
Engine: 2.3 DISI Turbo
Transmission: 6 speed MT
The factory bolts are button head Torx bit bolts (not hex).

Having these bolts still on the engine has nothing to do with being rebuilt or not... I'm confused on that one...
Old 05-26-2005, 12:35 PM
  #3  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT
thanks.

the reason i asked is because someone saw them and mentioned they werent factory adn the engine must have had major work done to it.

any one have close up pics of stock bolts on the intake manifold?
that would help me out a lot.

also, the kid did say "torqz" bolts, but they arent bolts. They are just round and have a hex pattern in the middle. You cant take them off with a wrench or anything without having a hex adapter.

Jon
Old 05-26-2005, 03:13 PM
  #4  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT


They look exactly like this, but Brown and they are everywhere on the upper engine. All the intake manifold bolts are these...is this stock?
Old 05-26-2005, 05:32 PM
  #5  
TGO Supporter

iTrader: (7)
 
aaron7's Avatar
 
Join Date: Nov 2002
Location: MA, USA
Posts: 3,460
Likes: 0
Received 5 Likes on 2 Posts
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
That pic is a hex bolt. I thought the stock ones (intake runners and such) were torx, but I might be wrong.

This is torx:

Old 05-26-2005, 06:11 PM
  #6  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Originally posted by J Dahl
they arent bolts
They're still bolts. Not all bolts have 6-point heads, some have allen heads or 12-point heads, or carriage heads, or torx heads, or who knows what else.

All if means if they're not factory is that someone has changed them. The bolts on the outside have little to do with what may or may not be on the inside.
Old 05-26-2005, 07:39 PM
  #7  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT
Originally posted by Apeiron
All if means if they're not factory is that someone has changed them. The bolts on the outside have little to do with what may or may not be on the inside.
That's true...
I was just interested, because "most" engines just stay stock and for the most part stay that way if all goes well. I just wanted to know if there was an industry standard when manufacturing these engines in the factory (that all 305's rolled out w/) and they all used the same variation of bolts.
I'm also taking off the intake manifold to replace the gasket, so I was wondering if I should put a different style that was more correct...but alas, like u said, "Bolts are bolts"
Old 05-26-2005, 07:44 PM
  #8  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT
Originally posted by aaron7
That pic is a hex bolt. I thought the stock ones (intake runners and such) were torx, but I might be wrong.

This is torx:

Also, they are similar to the small metal one at the top of the pic (with the round top) but the head diameter is wider and its brown (not rust).
I really think my engine was taken apart, from the leaking intake man. to the smoke on start up...but other than that...but it runs strong.
Thanks for the replies
Old 05-26-2005, 08:47 PM
  #9  
TGO Supporter

iTrader: (7)
 
aaron7's Avatar
 
Join Date: Nov 2002
Location: MA, USA
Posts: 3,460
Likes: 0
Received 5 Likes on 2 Posts
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Yes, like the chrome one, but brown color. Those are the stock ones.

There are still a few on the intake in this pic I found online, but normally they should all be the same on the runner to plenum bolts.

Old 05-26-2005, 09:06 PM
  #10  
Junior Member
Thread Starter
 
J Dahl's Avatar
 
Join Date: May 2005
Location: New Jersey
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Firebird Formula
Engine: 5.0L TPI
Transmission: AT
Do you know if they are reuseable?

ok awesome, thanks for clearing that up. That was a big help.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
08-20-2017 12:16 AM
Adamki2000
Brakes
24
12-20-2015 10:40 PM
bradleydeanuhl
DFI and ECM
4
08-12-2015 11:48 AM
Jake_92RS
Tech / General Engine
1
08-11-2015 10:39 AM
84z96L31vortec
North East Region
1
08-10-2015 08:27 PM



Quick Reply: Curious Bolts on my Engine?



All times are GMT -5. The time now is 12:08 AM.