Spark plugs - not all the same. Is there a reason?

spdterence Seriously Crusin Dubber

143 posts · joined May 2008 · 17 Sep 2009, 10:18 pm

#735851

I have just removed all my plugs.
What fun. Yes they are black - was running 145 mains in a 1776. Prolly a little rich Craig tells me.

Here is a picture of 3 of the plugs. I had already cleaned one so I could tell if the new jetting was better- it is 😎

But on No.3 cylinder I have a different plug.
3 of the plugs are Bosch Super 4.
No. 3 cylinder has a Beru ultra - some French thingy.

Is there a reason for this?
I think I will just buy 4 new Bosch ones. Suggestions? Terry.

2 attachments · Log in to view

Smile - It confuses people😀

Today:
Aussie 69 IRS pan Brazilian curves
1916cc of Stans magic
Fat boy stainless extractors
Craig & Tims 3 bar stiffy

Tomorrow
Cooookies
Better brakes

trickysimon 100km/h is only 9 seconds away

1,473 posts · joined Dec 2007 · 17 Sep 2009, 10:42 pm

#735853

Woah, never seen those fan-dangled 4 tip plugs before 😵

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 17 Sep 2009, 11:00 pm

#735857

Get bosch W8AC.

spdterence Seriously Crusin Dubber

143 posts · joined May 2008 · 17 Sep 2009, 11:46 pm

#735867

Ta muchly

Smile - It confuses people😀

Today:
Aussie 69 IRS pan Brazilian curves
1916cc of Stans magic
Fat boy stainless extractors
Craig & Tims 3 bar stiffy

Tomorrow
Cooookies
Better brakes

greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 · 18 Sep 2009, 3:40 am

#735885

i use them there 4 prongs things take them out every now and then just to stop thread lock had them in now for 12 months should be ok for another 12 months pricey but good

👍👍😂🙅🥷😬🤓

grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 · 18 Sep 2009, 10:52 am

#735938

As Craig says get a set of W8AC in Bosch,you will find less problems,over the years we have seen lots of problems with other plugs such as the thread protruding into the combustion chamber,getting a build up of carbon and bringing the thread with it on removal, wrong heat range causing fouling or burning the electrodes.

spdterence Seriously Crusin Dubber

143 posts · joined May 2008 · 18 Sep 2009, 2:33 pm

#735962

Thanks Grumble. Have sourced and installed. I don't want to do that again for at least 1 week. But I guess when we are sorting out the jetting.

the Germans think of everything - except what happens when you install a set of Italian carbies !

Smile - It confuses people😀

Today:
Aussie 69 IRS pan Brazilian curves
1916cc of Stans magic
Fat boy stainless extractors
Craig & Tims 3 bar stiffy

Tomorrow
Cooookies
Better brakes