Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #21  
Old 10-26-2021, 12:07 AM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 9,847
Thanks: 1,971
Thanked 2,503 Times in 759 Posts
Default

Perfect Charley. Interesting that they were not using flanged exhaust bolts.
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #22  
Old 10-26-2021, 02:47 PM
Lee Stewart's Avatar
Lee Stewart Lee Stewart is offline
Senior Member
 
Join Date: Mar 2017
Location: ABQ, New Mexico
Posts: 28,393
Thanks: 2,353
Thanked 71,733 Times in 14,659 Posts
Default

Rick:

Isn't it SOP to have a washer under the bolt for aluminum engine parts to prevent galling when tightened?
Reply With Quote
The Following User Says Thank You to Lee Stewart For This Useful Post:
SS427 (10-26-2021)
  #23  
Old 10-26-2021, 03:21 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 9,847
Thanks: 1,971
Thanked 2,503 Times in 759 Posts
Default

Quote:
Originally Posted by Lee Stewart View Post
Rick:

Isn't it SOP to have a washer under the bolt for aluminum engine parts to prevent galling when tightened?
Exactly why I was asking.
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #24  
Old 10-26-2021, 03:35 PM
x33rs x33rs is offline
Senior Member
 
Join Date: Dec 2017
Location: AZ
Posts: 739
Thanks: 43
Thanked 405 Times in 233 Posts
Default

That seems to vary sometimes. Not to steer off subject but when it comes to aluminum intakes, I think the BBC used washers under the bolts from originals I've seen, but some SBC aluminum intakes didn't.
I know the 69Z's did not use washers under the bolts on the intakes.

Doesn't really make a lot of sense but that's what I've observed. Different assembly plants I know, but bolts gulling up aluminum you would think would want washers as kind of a standard procedure across the board.
Reply With Quote
  #25  
Old 10-26-2021, 03:38 PM
Lee Stewart's Avatar
Lee Stewart Lee Stewart is offline
Senior Member
 
Join Date: Mar 2017
Location: ABQ, New Mexico
Posts: 28,393
Thanks: 2,353
Thanked 71,733 Times in 14,659 Posts
Default



Rick: when did Chevrolet stop this method of attaching the exhaust headers to the heads?
Reply With Quote
  #26  
Old 10-26-2021, 03:48 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 9,847
Thanks: 1,971
Thanked 2,503 Times in 759 Posts
Default

Quote:
Originally Posted by x33rs View Post
That seems to vary sometimes. Not to steer off subject but when it comes to aluminum intakes, I think the BBC used washers under the bolts from originals I've seen, but some SBC aluminum intakes didn't.
That is correct, the BB engines (at least in 69/70 used a washer headed bolt other than where the engine lift bracket was bolted to just like in Charley's photo.
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
  #27  
Old 10-26-2021, 03:53 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 9,847
Thanks: 1,971
Thanked 2,503 Times in 759 Posts
Default

Quote:
Originally Posted by Lee Stewart View Post


Rick: when did Chevrolet stop this method of attaching the exhaust headers to the heads?
Please don't quote me as I do not study the early cars but I think possibly 1966?
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
The Following User Says Thank You to SS427 For This Useful Post:
Lee Stewart (10-26-2021)
  #28  
Old 10-28-2021, 01:47 PM
MosportGreen66's Avatar
MosportGreen66 MosportGreen66 is offline
Yenko Contributing Member
 
Join Date: Nov 2002
Location: NY, NY
Posts: 8,333
Thanks: 867
Thanked 616 Times in 306 Posts
Default

Rick, do you know if washers under head bolts is also correct for L89 Corvettes? I don't recall if our car had them? I'll need to study up on the NCRS manual too

Dan
__________________
Follow me on Instagram: https://www.instagram.com/mbcgarage/
Reply With Quote
  #29  
Old 10-28-2021, 02:12 PM
SS427's Avatar
SS427 SS427 is offline
Yenko Contributing Member
 
Join Date: Jul 2001
Location: Pleasant Plains, IL
Posts: 9,847
Thanks: 1,971
Thanked 2,503 Times in 759 Posts
Default

Quote:
Originally Posted by MosportGreen66 View Post
Rick, do you know if washers under head bolts is also correct for L89 Corvettes? I don't recall if our car had them? I'll need to study up on the NCRS manual too

Dan
Based on the little research that I have done for this L89 I would say yes, they should have washers and would assume an L88 would as well.
__________________
Rick Nelson
Musclecar Restoration and Design, Inc
www.musclecarrestorationanddesign.com
https://www.youtube.com/watch?v=62r-6vgk2_8
specializing in (only real) LS6 Chevelle restorations
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:25 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.