carb heat shield - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 08-31-2007, 11:30 AM
Last photo:
Join Date: Jul 2004
Location: wis.
Posts: 107
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
carb heat shield

For those of you who use a carb heat shield, have you found one that actually helps? I have limited hood clearance, so 1/2" thick would be max. I was running a tarantula intake, with no hot start symptoms, changed to performer rpm. The carb bowls, Holley, had tons of clearance under them using the tarantula, now the fuel bowls are real close to the manifold, which has to be the problem. So the need for a heat shield. I'm not sure if a phenolic 1/2 spacer would work better than an aluminum heat shield. Ant thoughts?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 08-31-2007, 12:10 PM
DoubleVision's Avatar
Not Considered a Senior Member
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 43
Posts: 10,733
Wiki Edits: 0

Thanks: 19
Thanked 77 Times in 71 Posts
What I used in the past was the carb gasket for a 1983 Mustang GT that came with a holley carb from the factory. The gasket is about 1/2 thick and not only acts as a gasket but also acts as a heat isolator. Any parts store should carry it, if I recall correctly, it was a fel pro item. I would use studs with this gasket with equal tightness, this will make the gasket compress without the worry of stripped threads. It could also be the timing is too far advanced, or the mechanical advance is stuck in a open position, or last but not least, the electrical system has gotten tired. I always run a ground from the battery to the block and the block to the frame, this usually solves a hot start problem.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-31-2007, 12:58 PM
Deuce's Avatar
Registered User
Last wiki edit: Choosing a trailer
Last journal entry: Jan 13 2013
Last photo:
Join Date: Aug 2002
Location: Deuceland USA
Age: 69
Posts: 5,657
Wiki Edits: 6

Thanks: 0
Thanked 11 Times in 10 Posts

Edelbrock carburetors are well known to be heat sensitive also ... and I had the same problem ... so I used a aluminum heat shield. Chevrolet has them in their high performance catalog.

Edelbrock makes a gasket also for this purpose ... With one below the aluminum shield and one between the carburetor ... I had no more problems ...

These Edelbrock heat insulator gaskets are designed to help prevent fuel percolation in Performer series carburetors exposed to extreme underhood temperatures. They're available in both open and ported styles, and come complete with extended-length carburetor studs.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-31-2007, 11:29 PM
Last wiki edit: Calculating tire size
Last journal entry: Changes...
Last photo:
Join Date: Oct 2003
Location: Montreal
Age: 31
Posts: 532
Wiki Edits: 2

Thanks: 0
Thanked 2 Times in 2 Posts
Mr gasket has a kit that has a number of base gaskets and thin aluminum spacers that you stack alternatively, its pretty cheap and you can get it up to 1" I think. The nice thing about it is the height is up to you.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-01-2007, 01:34 AM
aka Duke of URL
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Oct 2001
Location: Rockville, MD
Posts: 4,821
Wiki Edits: 1

Thanks: 0
Thanked 0 Times in 0 Posts
HOLLEY PN 108-70

Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-31-2008, 12:43 AM
SnottyAust's Avatar
GTS Monaro Coupe 406
Last photo:
Join Date: Nov 2007
Location: Perth, Australia
Posts: 49
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
This thread is still cool i think.

A lecky once suggested the same material they use as fuse boards in fuse boxes. Its a bit heavy but..... Its DIY and in my opinion very effective. You could make multiple layer ones for spacer types with an air gap between each layer using carb gaskets or thin spacers. Whatever you like...

Im going for a more finnished larger two layer design that also shields the carb fuel log next.

If im wrong, let me know. Pics are of a new carb/RPM/engine with the current plate which ive been using on a 350/victor junior for about two years with no probs with oil fuel etc. For a dual plane like the RPM Air Gap id have a divider down the middle of the open area whith the manifolds divider plate notch extending into it.

#### if you do this dont breath any of the material when drilling, filing, machining etc. Wear a breathing mask and clean up properly ####
Attached Thumbnails
Click image for larger version

Name:	IMG_3266w.JPG
Views:	856
Size:	142.7 KB
ID:	30330   Click image for larger version

Name:	IMG_3275w.JPG
Views:	832
Size:	140.6 KB
ID:	30331   Click image for larger version

Name:	IMG_3269w.JPG
Views:	904
Size:	122.0 KB
ID:	30332  
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
backfire thru carb airraptor Engine 11 06-12-2009 02:30 PM
Effects of paint on cooling components Animal General Rodding Tech 7 03-12-2006 05:10 PM
Cleaning Carb Question oldcarguy36 Engine 17 03-04-2006 02:10 PM
Holley carb has me at wit's end cool rockin daddy Engine 23 06-02-2005 02:38 PM
Need some pointers on Holley carb crshrmn3 Engine 2 02-08-2003 11:22 PM

All times are GMT -6. The time now is 10:04 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.