C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

FAST92 Loctite or not?

Thread Tools
 
Search this Thread
 
Old Jul 3, 2009 | 02:37 PM
  #21  
kwhiteside's Avatar
kwhiteside
Thread Starter
Burning Brakes
 
Joined: Nov 2007
Posts: 962
Likes: 1
From: Lilburn GA
Default

OK, had to go to four stores. Got the only in lbs one Northern tool had. $149 ouch! This wrench better put that intake on for me for that price. Hey the good thing about the trip was Northern sold Ice Cream Sandwiches at the checkout. After going to 4 stores in the HotLanta heat, that put a smile on my face.

I think I'm going to wimp out on the loctite, and spend more time getting them tight.

Suspension all back together (DRM brake ducts, Wilwood calipers, PFC01 racing pads, bilstein shocks) It like a new car down there. Anyway, on to the intake.
Reply
Old Jul 3, 2009 | 05:54 PM
  #22  
kwhiteside's Avatar
kwhiteside
Thread Starter
Burning Brakes
 
Joined: Nov 2007
Posts: 962
Likes: 1
From: Lilburn GA
Default

Picked up a digital one that does in lbs. $149 was high, but after using it, I'll quote Ferris Bueller " If you can afford to get one, I highly recommend it"

I would have never considered paying that much for one, but I really wanted to do it right, so after four stores not having any, there it was.

All back together and running again. I'll let you know in a couple days if they loosen up again.

I did 60lbs first pass in the order suggested.

75in lbs next past

90 in lbs

finally 100 inch lbs.
Reply
Old Jul 3, 2009 | 06:56 PM
  #23  
vettenuts's Avatar
vettenuts
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Default

Great

You will use the wrench a lot if you work on the car. I tend to use the lb-in wrench on anything up to 18 lb-ft by converting the lb-ft to lb-in and swapping wrenches. I also torque my spark plugs and the smaller lb-in wrench is better for this job as well. In the end it will be money well spent.
Reply
Old Jul 4, 2009 | 09:57 AM
  #24  
phils C5 vette's Avatar
phils C5 vette
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2003
Posts: 8,004
Likes: 250
From: Tampa Fl
St. Jude Donor '12-'13-'14
Default

Originally Posted by kwhiteside
Ok, since you brought it up. Here's the crappy thingy I do. Feel free to suggest away.

I have a socket wrench where the socked goes up into the ratchet kindof inversed (Kobalt from Lowes). Fits under the firewall well this way. No way could I get a torque wrench on it. I don't know how anybody does. So As I'm working my way around the other 8, I'll put this little guy on one after using the torque wrench to feel how hard it is to turn with this little inverse wimpy socket. I then take my best guess on the two under the firewall.
I did these hand tight, then 4 half turns to make it snug following the tighting pattern
Reply
Old Jul 4, 2009 | 02:15 PM
  #25  
Ikester's Avatar
Ikester
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
Default

Originally Posted by vettenuts
I didn't loctite mine and have no leaks. In my opinion, tighten them evenly and correctly and move on.
ECS installed my FAST90 over a year ago, never had to re-torque anything...and I have no leaks
Reply
Old Jul 4, 2009 | 05:02 PM
  #26  
minitech's Avatar
minitech
Safety Car
15 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Mar 2007
Posts: 3,518
Likes: 37
Default

Loctite is not the way to go at all. If anything you will need to tighten the bolts a bit as time goes by due to gasket settling. So loctite would make it harder to tighten the bolts. NO-ONE notices the bolts ALL coming loose at the same time with a suprising similarity. The loosness is due to the gasket settling.

Remember, we are only keeping air pressure in. No high pressure in any way. Unless you have a supercharged or turbocharged system.
Reply
Old Sep 27, 2009 | 06:26 PM
  #27  
Z06ufgrad2002's Avatar
Z06ufgrad2002
Safety Car
20 Year Member
 
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
Default

Originally Posted by kwhiteside
Picked up a digital one that does in lbs. $149 was high, but after using it, I'll quote Ferris Bueller " If you can afford to get one, I highly recommend it"

I would have never considered paying that much for one, but I really wanted to do it right, so after four stores not having any, there it was.

All back together and running again. I'll let you know in a couple days if they loosen up again.

I did 60lbs first pass in the order suggested.

75in lbs next past

90 in lbs

finally 100 inch lbs.
What's the correct order?
Reply
Old Oct 1, 2009 | 07:04 PM
  #28  
Z06ufgrad2002's Avatar
Z06ufgrad2002
Safety Car
20 Year Member
 
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
Default

What's the proper torque for the 3 vertical bolts up towards the throttle body?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Oct 5, 2009 | 07:27 PM
  #29  
Z06ufgrad2002's Avatar
Z06ufgrad2002
Safety Car
20 Year Member
 
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
Default

Originally Posted by minitech
Loctite is not the way to go at all. If anything you will need to tighten the bolts a bit as time goes by due to gasket settling. So loctite would make it harder to tighten the bolts. NO-ONE notices the bolts ALL coming loose at the same time with a suprising similarity. The loosness is due to the gasket settling.

Remember, we are only keeping air pressure in. No high pressure in any way. Unless you have a supercharged or turbocharged system.
Just FYI the factory manual states to use Threadlock/Loctite on the intake bolts.
Reply
Old Oct 6, 2009 | 09:12 AM
  #30  
waddisme's Avatar
waddisme
Safety Car
Supporting Lifetime Gold
15 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
Default

Originally Posted by Z06ufgrad2002
What's the correct order?

Reply
Old Oct 6, 2009 | 10:09 AM
  #31  
kwhiteside's Avatar
kwhiteside
Thread Starter
Burning Brakes
 
Joined: Nov 2007
Posts: 962
Likes: 1
From: Lilburn GA
Default Torque Sequence

The order is in the attached pic from the FAST92 instructions.

Just a few updates about my experience with this. Let me qualify myself by saying I'm no expert.

After torquing too tight as many recommend I cracked both the outer shell and the main under body. I sent it into Comp Cams, the company who handles distribution, and they believed my valley cover plate on the 2001 was causing problems because it has a bunch of bumps on it for the pcv nuts underneath. They gave me a brand new replacement. They also warned me that it most likely will happen again .

So I went to Road Atlanta with my stock intake and a solid tune. I really noticed the difference missing those extra HP. I have this thing about rich guys in their 60k cars passing me, I believe you should be able to outdrive me, not just outspend me

The popular Atlanta speed shop I bought it from agreed about the valley cover problem and said they usually just swap that dude out for a flat one. Well, the only flat ones I could find required relocating the knock sensors like on the LS2. Long story short. My FAST92 is back on and I will not go over 89lbs.

Oh, I spoke specifically with the head of their RMA deparment about the loctite and what he said made a lot of sense. "Do you think if you went to GM to get a new intake they would send you down the road and tell you to come back a couple more times", no way, use the loctite. Well, I put about 1/8 inch of blue loctite on each bolt when I put mine back on. I was very surprised with what I noticed. After a few weeks of driving, I'm thinking should I just let it be forever, assuming that the loctite held? I decided to put my fancy electronic torque wrench on 60in lbs and check them out. I figured that if they were still locked in at 89in lbs the wrench would beep before turning the bolts at all. Well, those bolts had to have been less then 50in lbs because they were really loose. Like I said, I'm no expert, and there are too many experts with different opinions for me to understand what is right. I'm hoping that after my third sequence of tightening, I can just leave it alone. From past experience I noticed that each time I retightened them, they would be closer to what they should be. Those gaskets are really good too, so I don't think it is that critical if they end up less then 89in lbs, but what do I know . . . . .
Attached Images   

Last edited by kwhiteside; Oct 6, 2009 at 10:13 AM.
Reply
Old Oct 6, 2009 | 11:06 AM
  #32  
waddisme's Avatar
waddisme
Safety Car
Supporting Lifetime Gold
15 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
Default

I just got mine re-installed Sat, but I give back the torque wrench I was using. I may need to get it back and keep rechecking. Thanks for the sequence pic. Some of us have a used FAST.
Reply




All times are GMT -4. The time now is 12:14 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE