Like Tree0Likes

Bbc # 7 Cyl Loss

Reply
Old 04-29-2002, 02:42 PM
  #1
turbo2256
Guest
 
Posts: n/a
Default Bbc # 7 Cyl Loss

How many have lost # 7 cyl as compaired to the other 7 in BBC
 
Reply With Quote
Old 04-29-2002, 02:53 PM
  #2
Registered
 
Join Date: Feb 2002
Location: LaPorte IN.
My Boats: 1997 23' WPM Cat!!
Posts: 1,296
Default

I haven't lost #7, but it is a common cyl to get pounded especially if special attention isn't given to #5 and #7 plug wire spacing. They fire so closely in the firing order if 5 jumps to 7 it will result in severly overl advanced combustion in #7 and bad things will happen.
WETTE VETTE is offline  
Reply With Quote
Old 04-29-2002, 06:20 PM
  #3
Registered
 
Turbojack's Avatar
 
Join Date: Sep 2001
Location: Houston, TX, USA
My Boats: 2003 Eliminator 30' Daytona
Posts: 2,285
Default

Which time? The one that goes most for me is #7, then 5. Except for last year I had # 2 & #6 detonate apart. Wish I knew why? Never had a problem with the even side before in all my years. The problem with #7 is it fires right after #5 in firing order & has not had time to disapate heat so it detonates.

(OK I fixed my post, this is what I get for trying to work while I read/post on OSO)

Last edited by Turbojack; 04-29-2002 at 06:53 PM.
Turbojack is offline  
Reply With Quote
Old 04-29-2002, 06:38 PM
  #4
Registered
 
blue thunder's Avatar
 
Join Date: Nov 2001
Location: Pennsylvania
My Boats: 330 Carver 30' Scarab Panther 17' ProV Lund
Posts: 3,359
Default

I think turbo jack means because 7 fires after 5. I wasn't aware of this problem, but it makes sense and I will check it out. I've heard ole number 7 having rod bearing problems due to not warming engine thoroughly before getting on it though.

Anyone know of anything like this that could make #2 have a carbon buildup problem?

BT
blue thunder is offline  
Reply With Quote
Old 04-29-2002, 06:58 PM
  #5
Registered
 
Turbojack's Avatar
 
Join Date: Sep 2001
Location: Houston, TX, USA
My Boats: 2003 Eliminator 30' Daytona
Posts: 2,285
Default

I do not see why 7 would have rod problems except for being caused by detonation. Of all the pistons I have gone thru over all of the years I have never had a rod/bearing problems.
Turbojack is offline  
Reply With Quote
Old 04-29-2002, 07:31 PM
  #6
Registered
 
Crazyhorse's Avatar
 
Join Date: Jan 2001
Location: Holland MI
My Boats: 38 Cigarette flat-deck
Posts: 3,140
Default

Do you guys bet on #7 when you go to Vega$?
Crazyhorse is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
cobrapower
New Products and Member Discounts
1
07-22-2012 10:46 PM
eliminatethis
Drives and Lower Units
6
05-20-2008 04:44 PM
TomFTM
Wanted
15
04-25-2008 02:16 PM
razor1115
General Q & A
9
05-02-2007 12:10 PM



Posting Rules
You may not post new threads
You may not 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



All times are GMT -5. The time now is 10:24 PM.


Copyright 2011 OffShoreOnly. All rights reserved.