Spark Plug Tricks - Page 3 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 09-12-2006, 11:28 PM   #21
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
My throttle cable is just too long, too lazy to buy an Si/HF version.

That isn't the o2 harness, that's the old auto kickdown cable just laying around from pre-conversion days.
__________________

SVOboy is offline   Reply With Quote
Old 09-13-2006, 05:12 AM   #22
Registered Member
 
JanGeo's Avatar
 
Join Date: Jan 2006
Posts: 2,442
Country: United States
Send a message via Yahoo to JanGeo
Take the cover off and clean the gasket apply some cement to it and put it back on again! I always aim the gap towards the intake valve and get better results that way - the idea is to ignite the coolest mixture first and the hotter areas where the exhost valves are will ignite good enough as the flame travels towards it. I end up with perfect idle and no skipping or misfires. The indexing washers should be thinner than a single plug thread pitch, I had a friend surface grind some washers down to various thicknesses to make a set.
__________________

JanGeo is offline   Reply With Quote
Old 10-24-2006, 10:33 AM   #23
Registered Member
 
Join Date: May 2006
Posts: 238
Country: United States
Robert Bosch invented the spark plug!

Quote:
Originally Posted by DaX
SHAME SVO!!!! Bosch plugs in a Honda?! REPENT!!!!!!!!!!!!!
Ah, so! 'tis opinion time, folks!

Personally, I wouldn't hit a Southbound bull in the Northern end with a NGK plug! Internally, they're crap! I'll choose Autolite or Bosch anyday/anytime! -TH
Ted Hart is offline   Reply With Quote
Old 10-25-2006, 12:06 AM   #24
Registered Member
 
Join Date: Aug 2006
Posts: 541
Country: United States
Quote:
Originally Posted by theclencher
Well that was informative. What's the difference between good plugs and bad ones?
I have heard that tons of times , that this plug works great and this one makes it run like poopy.
But..(theres always a but)

A plug from this manufacturer is mostly the same as from another.
Steel , ceramic , perhaps a copper electrode and thats about all thats in them.

The main difference from this brand to another is from their heat range ratings.

The heat range (which is usually indicated by the number) is how fast the heat will transfer from the plug to the head.
This influeces the heat level inside the combustion chamber.

Too cold and the engine will foul with unburnt fuel , drop power and eveentually missfire.
Too hot and preignition will result , and in extreme cases engine failure can result.

Many of the spark plug books conversion charts should only be used as a starting point.
Their actual listing of ?make-model = this plug? should likelwise also be a starting point.

Some manufactures guess quite well which plug is most likely suitable for your car , but some dont guess so well.

This is where one plug works better than another comes from.

If you had a so called BAD plug and read what the plug was saying (many new mechanics cant do this) by observing its colors , a change to a different heat range in the same brand will likely get it running sweet again.
onegammyleg is offline   Reply With Quote
Old 10-25-2006, 01:22 AM   #25
Registered Member
 
Join Date: Aug 2006
Posts: 541
Country: United States
Quote:
Originally Posted by theclencher
Gammy -
Have you ever conducted tests of side gapping and indexing?
I used to do indexing on the race cars where suposedly it was good for a couple of HP at full revs., but I never dyno'd tested it as it was normal practice.

On a normal car the HP gains would be extremly low.
For FE applications , perhaps there would be something depending on combustion chamber design , but I wouldnt lay any bets either way.

For FE
onegammyleg is offline   Reply With Quote
Old 10-25-2006, 02:33 AM   #26
Registered Member
 
Join Date: Aug 2006
Posts: 541
Country: United States
theclencher

MSD's and their multiple spark discharge box with their own high voltage coil is a logical choice.
Experimenting with spark plug gap would be quite easy to test with the Scangauge.
Could be something in that when combined with the MSD.
__________________

onegammyleg is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Not very precise mpg calculation larjerr Fuelly Web Support and Community News 4 08-20-2012 02:03 AM
US / metric switching problems gory Fuelly Web Support and Community News 4 01-24-2011 03:04 AM
bought a ninja 250 caprice Motorcycles 11 02-03-2010 03:17 PM
Tracking Monthly Fuel Expense Taser Fuelly Web Support and Community News 2 11-10-2009 12:40 AM
TDI EPA figures off? bates General Fuel Topics 14 09-15-2009 09:04 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.