327 questions - 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 12-26-2006, 09:12 PM
Registered User
 
Join Date: Jul 2004
Location: Red Deer,Alberta. Canada
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
327 questions

I have some engine issues regarding the 327 in my model A hot rod. I have 11.5 inches of vacuum at 800 RPM. Does this seem to low? I also am getting oil on the spark plugs, three changes or cleanings in the first 2800 miles. There is no visible smoke from the exhaust after starting, idling or hard acceleration. The engine starts great and has no over heating problems. I have checked twice for vacuum leaks and found none. The short block was machined and assembled by a reliable builder, I did the rest at home. Any thoughts or ideas would be appreciated, its winter here now, lots of time to work on car.

327 bored 0.40
performer heads, 170-70
performer intake
600 performer carb
MSD distributor, 17 initial 37 total, all in at 3000 RPM
camshaft, 214-224 duration, .442/.465 lift, 112 lobe separation
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-26-2006, 10:36 PM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: 1999-2001: Getting it on the road
Last photo:
Join Date: Dec 2005
Location: Pittsburgh, PA
Age: 40
Posts: 5,128
Wiki Edits: 16

Thanks: 0
Thanked 1 Time in 1 Post
sounds like too much throttle opening and not enough initial timing. I can't really recommend more than that without knowing how much mechanical timing your dizzy adds.

You can play around with it at idle. Check the timing so you can return to where you were, but advance it about 4 degrees and drop the idle back down to where it was and recheck your vacuum. If it has increased you need to spend some more time tuning
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-27-2006, 08:08 AM
Registered User
 
Join Date: Jul 2004
Location: Red Deer,Alberta. Canada
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Distributor info

The distributor is a MSD small diameter, I'm using the 20 degrees it came with from MSD. It's a pro billet model, there is no vac canister.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-27-2006, 09:04 AM
King of my Man-cave.
 
Last photo:
Join Date: Nov 2003
Location: Michigan
Age: 55
Posts: 2,836
Wiki Edits: 0

Thanks: 2
Thanked 4 Times in 2 Posts
What kind of work was done to the heads?

tom
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-27-2006, 11:12 AM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: 1999-2001: Getting it on the road
Last photo:
Join Date: Dec 2005
Location: Pittsburgh, PA
Age: 40
Posts: 5,128
Wiki Edits: 16

Thanks: 0
Thanked 1 Time in 1 Post
In that case, confirm that you are at 18* initial and reset your idle.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-27-2006, 11:24 AM
Registered User
 
Last photo:
Join Date: Dec 2006
Location: Northeast Kansas
Posts: 113
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: 327 questions

With all the oil on your plugs it sounds like your rings didn't seat properly. That can happen if you ran one of those high tech synthetic oils burning your initial break-in. If they're really bad it could also cause the low vacuum. Another possible cause can be improper valve lash or cam timing.
Good luck
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-27-2006, 08:49 PM
Registered User
 
Join Date: Jul 2004
Location: Red Deer,Alberta. Canada
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The cylinder heads were new, adjusted valve lash twice no problems, broke engine in with Q State 10-30, have run 15-40 Rotella diesel oil since break in. I hope to do a cylinder leakdown test in the next couple days. I have to make the tool first. The cam was installed straight up. I appreaciate everyones opinions, there is alot of knowledge on this board.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 12-27-2006, 09:35 PM
King of my Man-cave.
 
Last photo:
Join Date: Nov 2003
Location: Michigan
Age: 55
Posts: 2,836
Wiki Edits: 0

Thanks: 2
Thanked 4 Times in 2 Posts
Quote:
Originally Posted by 1 Day
The cylinder heads were new, adjusted valve lash twice no problems, broke engine in with Q State 10-30, have run 15-40 Rotella diesel oil since break in. I hope to do a cylinder leakdown test in the next couple days. I have to make the tool first. The cam was installed straight up. I appreaciate everyones opinions, there is alot of knowledge on this board.
This may or may not be your problem, but new heads doesn't necessarily mean problem-free heads. Last week I replaced guides in a set of new aftermarket heads 'cause they were WAY loose. Having said that, if the second compression rings were installed upside-down, that could show good compression and leak-down results but still push oil into the cylinders.

tom
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 12-28-2006, 12:24 AM
Member
 
Last photo:
Join Date: Aug 2005
Location: Yackandandah.Australia.
Age: 52
Posts: 641
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
How does your intake manifold fit? If the manifold/heads/block were machined on the wrong angle it may not be sealing the 'valley' area and sucking oil up into the ports from below. I once saw a manual choke holley without a cable close at high speed and suck in the gasket on heavily ported heads.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 12-28-2006, 09:10 AM
Registered User
 
Last photo:
Join Date: Dec 2006
Location: Northeast Kansas
Posts: 113
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: 327 questions

If you're looking for a leak-down tester, I noticed that Harbor Frieght Tools has one now. It's part number 94190-0VGA for $60.00
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
Chevrolet 327 TEEMCDEE9552 Engine 15 06-09-2007 08:22 PM
help make my 327 angry!!! 70chevelle327 Engine 41 04-24-2007 05:33 PM
ok i got a 327 as u know i have a few questions please. Eric327 Engine 6 06-25-2005 09:32 PM
sbc 327 vs 350 Harmonic Balancer Question Ted's37 Engine 3 07-14-2003 04:10 PM
327 TO 350 CONVERSION 34FordPickUp Engine 4 08-27-2002 05:56 PM


All times are GMT -6. The time now is 03:49 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.