Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- 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> carb spacer plate
User Name
Password
lost password?   |   register now

Thread: carb spacer plate Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
07-27-2008 11:57 AM
vetteman
Quote:
Originally Posted by red65mustang
you can buy a oem approx 3/8" thick 4 hole insulating carb gasket at your local parts store for about $10?....

the Edelbrock 3/8" insulator 4 hole gasket is about $14?
Maybe I overlooked those, but at the time I believe the thinnest,in phenolic I could find was 1/2". 4150 style. The purpose for the spacer was for heat soak, not tuning. But I believe,except for upper rpm's, the four hole insulator/spacer would be preferable for street. Although with a 4-sp, I can work with the rpm's to overcome the low rpm glitch.
07-27-2008 11:14 AM
red65mustang you can buy a oem approx 3/8" thick 4 hole insulating carb gasket at your local parts store for about $10?....

the Edelbrock 3/8" insulator 4 hole gasket is about $14?
07-27-2008 10:47 AM
vetteman Thanks for the feedback. Although the car does run well, I thought it could use a little tweaking off idle. Heat soak was the reason for the 1/2" spacer, and I did do some checking about adding another 1/2" to an already "high" intake, and came to a conclusion a 1/2" wouldn't really affect it that much. So I guess if i'm bored, i'll experiment with the four hole plate I have.
07-27-2008 09:08 AM
red65mustang are you tuning for better at the strip or better on the street atomization???

here's a good spacers explaination article....
http://www.gnetworks.com/v4files/bar...h%20images.pdf

and there is another good article in the Knowledge Base link at the top of the page.....

yes, your present 1/2" open spacer may well be adding a few more WOT peak HP ponies...."but".... at street rpms it is making the RPM dual plane intake behave as a open plenum design because there is no divider wall at the carb bottem...

on a intake stroke the piston is trying to pull a vacuum to make a strong carb Hg (good velocity for excellent atomization) signal from all 8 of the intake runners cubic inches of area due to no divider instead of just 4 runners worth of area....
(and worse it's 1/2 the carb signal at the carb because it is pulling from both primaries)

if your looking for better street driving performance I'd remove the 1/2" open spacer and test drive it....the "high rise" RPM intake already has a plenty tall carb base to plenum bottem distance...
07-27-2008 08:14 AM
malc It looks to be more of a gasket.
Stay with an open spacer, one inch better.
I went to a one inch open after a four hole and the difference was
noticeable immediately with the idle.
More torquey as both banks can call upon the whole carb.

Take a lookat this from CarJunkies may take awhile to load.
07-27-2008 07:31 AM
dawg 4 hole spacer plates help atomize the fuel/air in otherwise big manifolds.
helps get rid of the bog /hesitation off the line.
but judging from the pic that spacer is too thin.
at least 1" to notice a difference.
07-27-2008 05:46 AM
vetteman
carb spacer plate

I have this plate, and was wondering if it would help atomize the fuel a little better at low to mid rpm's. I have a performer rpm, Holley 650HP, 1/2" open carb spacer. This motor was dyno tuned, but I never thought about trying this plate. This motor is in a 64 vette, 4-sp, 327-350. Any thoughts?

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


All times are GMT -6. The time now is 07:44 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.