Felpro gasket compressed thickness. - Hot Rod Forum : Hotrodders Bulletin Board
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
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-29-2010, 05:03 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Felpro gasket compressed thickness.

Ive read on classic inline that felpro gaskets for the inline six`s have a .038 compressed thickness where could i verify this. and where could i get reference to which gaskets have what?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-29-2010, 05:51 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,603
Wiki Edits: 326

Thanks: 701
Thanked 892 Times in 758 Posts
If you would be more specific on the motor you have, I could be more specfific on the gasket, but here are 4 different part numbers for Chevy inline sixes, all have 0.041" compressed thickness
http://www.summitracing.com/search/P...rd=head+gasket
Here are 5 different part numbers for Ford inline sixes, they vary from 0.038" to 0.039" compressed thickness
http://www.summitracing.com/search/P...rd=head+gasket
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-29-2010, 06:35 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ford 200 inline six. the gasket i pulled off has a
.045 compressed thickness.
3.8 gasket bore.

the engine
is a 3.68 bore.
3.126 stroke.
58cc combustion chambers.
.010 deck height.
ported polished head with unshrouded valves.
crank turned for cleanup. the pis
tons are -8cc.
yielding 8:1 compression ratio
depending on the thinnest gasket i find i can bump it up to 9.0 with a .038- .039 gasket and milling .035 off the head to achieve a 53 cc combustion chamber.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-29-2010, 06:37 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sorry even with a .038 gasket and 53cc combustion chambers ill only have an
8.7:1
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-29-2010, 11:51 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,603
Wiki Edits: 326

Thanks: 701
Thanked 892 Times in 758 Posts
Quote:
Originally Posted by 74chevyflat
sorry even with a .038 gasket and 53cc combustion chambers ill only have an
8.7:1
Worse than that, you only have a 200 cubic inch motor.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-30-2010, 04:38 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
yes yes techinspector u are very correct i have researched all over the interent trying different calculator even doing my own math and the compression ratio i stated was static not dynamic. dynamic as the engine stand without shaving the heads getting a special gasket or changing pistons i have a 6.35;1 DOES ANYONE HAVE ANY TRICKS they can lend a hand with me.

BTw i was entering in the piston volume in a negative number hence being a dome, when i have a positive meaning adding volume bc its a dish,

WHat compression ratio is good for a supercharger and/or turbo application? and what cam should i install.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-30-2010, 04:41 PM
Registered User
 
Last photo:
Join Date: Feb 2004
Location: puerto rico
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have a lil question to ask about lobe centers. doesnt a tighter lobe center cause the static compression to raise ,meanwhile a 112* bleeds off the pressure. or am i misinformed i read a thread on here about this i was just wondering on what i could do with this motor to make it perorm well wit a supercharger. in fact an M-90 to be exact. and a 2 brrl holley.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-30-2010, 05:38 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,603
Wiki Edits: 326

Thanks: 701
Thanked 892 Times in 758 Posts
Quote:
Originally Posted by 74chevyflat
doesnt a tighter lobe center cause the static compression to raise ,meanwhile a 112* bleeds off the pressure.
Static compression ratio is a mathematical, non-changing function that is determined by measuring clearances and determining volumes when you are setting the tone of the engine build. Once the motor is bolted together, nothing can change the static compression ratio except tearing the motor down and changing a dimension (volume).

The term "lobe center" is sometimes used interchangably with the terms "lobe separation angle" or "lobe displacement angle". It describes the number of degrees separating the max lift points of the intake and exhaust lobes (intake centerline and exhaust centerline). LSA is determined when a camshaft is ground and cannot be changed by the end user of the camshaft. A tighter LSA (smaller number) results in a narrower and peakier torque curve, while a wider LSA (bigger number) produces a broader torque curve. The intake centerline can be adjusted in relation to crank and piston position when the cam is installed by the end user and can have the effect of increasing off-idle torque (advancing) or increasing peak RPM (retarding). You must realize though, that all four cam timing functions (IO,IC,EO,EC) change when you alter the relationship of the cam to the crank/piston. When advancing the cam, the intake and exhaust valve will open sooner and close sooner. When retarding the cam, the intake and exhaust valve will open later and close later.

Quote:
Originally Posted by 74chevyflat
For example, if your camshaft has a 110 LSA, and you install it with 4 advance, your intake centerline is 106 after Top Dead Center.
In this example, all four functions occur earlier in the cycle. By far, the most important timing event is the intake close. In your example, the intake would close 4 degrees earlier, trapping additional fuel/air mixture and generating additional cylinder pressure at the expense of peaking earlier and "running out of breath" earlier.



Quote:
Originally Posted by 74chevyflat
or am i misinformed i read a thread on here about this i was just wondering on what i could do with this motor to make it perorm well wit a supercharger. in fact an M-90 to be exact. and a 2 brrl holley.
A supercharger will cover up a multitude of sins, but remember, in the end, you still only have 200 cubic inches. The fact is though, that if you puff 6 psi into the motor, it will think it has grown to 300 cubic inches.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

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.




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
Head gasket compatibility Greg T Engine 28 05-06-2010 11:50 AM
Help! Piece of Gasket Fell Into Intake... lead09 Engine 11 08-18-2006 08:07 AM
Compressed gasket thickness Rhansen Engine 2 11-20-2005 01:57 PM
Felpro head gasket specs 8843astro Engine 0 05-19-2004 11:02 AM
Proper Gasket thickness available 84stepside Engine 1 04-18-2004 07:16 PM


All times are GMT -6. The time now is 08:39 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.