Chasing a ghost in a 350 SBC. - Page 2 - 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
  #16 (permalink)  
Old 01-08-2013, 05:31 PM
Registered User
 
Join Date: Jul 2012
Location: San Angelo, Texas
Age: 66
Posts: 161
Wiki Edits: 0

Thanks: 20
Thanked 39 Times in 36 Posts
Good news...glad you got it fixed.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 01-08-2013, 05:45 PM
Registered User
 
Last photo:
Join Date: Jul 2004
Location: At Speed
Age: 51
Posts: 1,378
Wiki Edits: 0

Thanks: 2
Thanked 37 Times in 35 Posts
FWIW, I have seen more than a few problems lately with old muscle cars trying to run gasohol, which is pretty much all thats available in my area. Vapor lock issues in the summer, surging under cruise, etc which can be eliminated by running actual gasoline. I wonder in the pumps have more than 10% alcohol like they claim. Old rubber parts in the fuel system are also a problem with the new gasoline.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 01-08-2013, 05:48 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,362
Wiki Edits: 0

Thanks: 342
Thanked 817 Times in 783 Posts
you lose power with ethanol and need to richen the mixture in some cases.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 01-20-2013, 09:32 PM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
UPDATE: I took the 4150 apart and found a nice piece of fuel line trash, I built 6-AN fuel line, wedged in one of the passages of the primary metering block. Also found another great piece of fuel line trash blocking the hole in the secondary pump outlet. Anyway, played with three steps of PV, ended up using 5.5, and dialed the idle mixture screws to 7/8 turn out from seat. Re adjusted the idle transfer slots on primary side, and adjusted idle speed mainly with the secondary idle adjustment. Then started playing with pump arm gap. Adjusted to have a slight gap in the pump arm and pump lever.

Then came timing. To make a long story short, initial timing is a crazy 24 degrees. With heavy springs installed for a slow curve, and used a silver stop bushing. Total timing at 3000 is now 34 degrees. Car starts great, idles great, is very responsive, has almost zero transition into the secondaries on a double pumper, and pulls very hard from 2800 to 6000 rpm. Still a bit concerned with having 24 degrees initial, but there is zero pinging. Anyway, thoughts and comments are welcome. I believe my rear end gear is a 3.08:1 instead of the axle code stating 2.56:1. I'm turning 2500 rpm at 65 with a 27" tire.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 01-20-2013, 09:39 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,362
Wiki Edits: 0

Thanks: 342
Thanked 817 Times in 783 Posts
excellent news.Gear Ratio Speed Calculator
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 01-20-2013, 09:56 PM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by vinniekq2 View Post
Any idea why this engine likes so much initial timing?
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 01-20-2013, 10:11 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,362
Wiki Edits: 0

Thanks: 342
Thanked 817 Times in 783 Posts
maybe the match of your cam and compression ratio.
I use just under 20 degrees at idle,so you are similar to mine?
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 01-21-2013, 04:24 AM
Registered User
 
Last photo:
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,222
Wiki Edits: 0

Thanks: 0
Thanked 120 Times in 116 Posts
Chasing a ghost in a 350 SBC.

With some of the aftermarket camshafts it will take alot of initial timing. There is nothing wrong with it. Check the total timing at 3500 rpms and above to make sure all the mechanical advance is in at 3000 rpms. The silver bushing allows 25 degrees advance. Check out this website for 10* and 14* advance limiter bushings it sounds like you will need them. Tuning MSD Distributors. Usually it takes one blue spring and one light silver spring to get the advance all in by 3000 rpms. Use a vacuum guage to tune your carburetor. Adjust the idle mixture screws out to get the highest vacuum reading.
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 01-21-2013, 06:53 AM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I will check out the bushings. Thanks. I drove the car this morning and it ran like crap again. A cold front did move in last night and it's around 27 degrees. Don't know if that made the car run bad or not. Here we go again!!!
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 01-21-2013, 09:30 AM
Registered User
 
Last photo:
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,222
Wiki Edits: 0

Thanks: 0
Thanked 120 Times in 116 Posts
Chasing a ghost in a 350 SBC.

BTW what is this motor in? When you say a cold front came in is it raining and damp where the vehicle is?
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 01-21-2013, 09:37 AM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by cdminter59 View Post
BTW what is this motor in? When you say a cold front came in is it raining and damp where the vehicle is?
It's just cold dry air no moisture what so ever. The engine is in a 70 Chevelle
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 01-21-2013, 02:02 PM
Registered User
 
Last photo:
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,222
Wiki Edits: 0

Thanks: 0
Thanked 120 Times in 116 Posts
Chasing a ghost in a 350 SBC.

It sounds you are having a problem with module in the distributor. You might want to have it checked. I think Auto Zone checks them. This would be the first thing I would replace.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 01-21-2013, 02:10 PM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by cdminter59 View Post
It sounds you are having a problem with module in the distributor. You might want to have it checked. I think Auto Zone checks them. This would be the first thing I would replace.
I'm using a MSD Pro Billet. I have changed out two complete Pro Billets with same results
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 01-21-2013, 04:22 PM
Hacksaw's Avatar
BOOMER SOONER
 
Last photo:
Join Date: Jun 2008
Location: Oklahoma
Age: 39
Posts: 249
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I did notice that the car ran better on my way home. It ha warmed up to the mid 40s today. Could I be facing a problem I have read about the Edelbrock performer rpm air gap manifold and cold weather?
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 01-21-2013, 06:21 PM
Registered User
 
Last photo:
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,222
Wiki Edits: 0

Thanks: 0
Thanked 120 Times in 116 Posts
Chasing a ghost in a 350 SBC.

That could be a possibility. They do take a long time to warm up. You don't have a spare Performer RPM you could try do you? Maybe a buddy might have one on the shelf? Have you checked your coil lately? Here is how to check it with an ohm meter. http://www.international-auto.com/fi...ition-coil.cfm

Last edited by cdminter59; 01-21-2013 at 06:35 PM.
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:
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
GoPro video, Bucket-T chasing down a motorcycle deckofficer Hotrodders' Lounge 48 05-14-2011 08:39 AM
chasing pinholes. it worked...and didnt glhx Body - Exterior 10 10-28-2010 05:34 AM
Chasing down a really annoying squealing belt! killerformula General Rodding Tech 8 02-23-2010 11:31 PM
Chasing TPI Gremlins trees Engine 3 10-17-2005 11:05 AM
Cruising or chasing sales? tm454 Hotrodders' Lounge 3 08-30-2003 07:30 PM


All times are GMT -6. The time now is 10:08 PM.


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.