 Spark Plug reading Help |
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| tornik550 |
 Jul 26 2010, 09:32 PM
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#1
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Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
I am in the process of tuning my carbs. I had been dealing with some significant rich running issues that I posted in a previous post. That issue is resolved. Now, I am able to drive the car however it seems to hesitate at cruising speeds (2500k rpm). Idle seems a little rough.
I am a novice at reading spark plugs. I am looking for opinions on this plug. The other plugs look the same except the white on the electrode only goes a little past the curve. I should note that the timing was a bit too advance and has been dialed back a slight bit. My guess- little too rich, too hot of spark plug and timing too advanced. Setup info- Dual weber 40 idf- recently sync'd idle jet- 60 mains-145 air correction jets- 200 emulsion tubes- f11 vents 32 Spark Plugs- NGK BP7ES Engine- 2.27l I should also note that I have a lot of spark plugs laying around. Doe anybody know if a NGK BP8ES is hotter old colder than BP7ES (think its colder). Attached thumbnail(s)   Attached image(s) 
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| Mark Henry |
Jul 26 2010, 09:36 PM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Way to lean!
engine specs? |
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| tornik550 |
Jul 26 2010, 09:45 PM
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#3
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
QUOTE(Mark Henry @ Jul 26 2010, 11:36 PM)  Way to lean! engine specs? For my future reference- what makes you think too lean? I thought maybe a little rich because I had some black soot on the base ring. Engine Specs- 2.27l-recently rebuilt by local porsche builder using parts I provided. 78.5mm crank 96mm jugs 2.0l heads not sure of cam- told by PO was "a fairly aggressive webcam for carbs" whatever that means. I really should have checked prior to assembly. MSD 6al MSD blaster 2 coil bosch 050 dizzy What do you think I should change? |
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Posts in this topic
tornik550 Spark Plug reading Help Jul 26 2010, 09:32 PM
Kirmizi http://www.dansmc.com/Spark_Plugs/Spark_Plugs_cata... Jul 26 2010, 09:36 PM tornik550 I realize that it may sound dumb that I am asking ... Jul 26 2010, 10:32 PM Vacca Rabite I am using nearly the same jetting on a 2056.
I t... Jul 27 2010, 06:20 AM
tornik550
I am using nearly the same jetting on a 2056.
I ... Jul 27 2010, 06:26 AM Mark Henry Here's a "how to" on webers I found ... Jul 27 2010, 07:08 AM 9146986 Larger carbs are probably NOT the answer, especial... Jul 27 2010, 07:12 AM '73-914kid The plug even shows that the timing was too advanc... Jul 27 2010, 07:43 AM tornik550
The plug even shows that the timing was too advan... Jul 27 2010, 08:25 AM ME733 .Your / the plug gap appears to be excessive...to ... Jul 27 2010, 11:21 AM tornik550
.Your / the plug gap appears to be excessive...to... Jul 27 2010, 12:23 PM ME733
.Your / the plug gap appears to be excessive...t... Jul 28 2010, 08:45 AM Jake Raby Reading plugs from engines with unleaded fuel is d... Jul 27 2010, 12:01 PM yeahmag You can get Innovate LM-1's used all day long ... Jul 27 2010, 01:04 PM '73-914kid
Reading plugs from engines with unleaded fuel is ... Jul 27 2010, 02:07 PM |
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