Vauxhall Owners Forum banner

Bosch Super 4 plugs

8K views 67 replies 35 participants last post by  Rob_S 
#1 ·
I am currently running them in my calibra 16v redtop, what is your opinion of them and what other spark plugs would you say are better.
 
#8 ·
stereo_rob said:
I was told by a mechanic that those Bosch super 4 plugs arnt always better because there is a 4 point spark it gives a weaker spark than a 2 or 1 point spark.
Nonsence.

It gives one spark to witch ever elektrode has the least recistance.

Advance of these is that they have 4 possibilities to spark to.
and so will spark some what easier.

Second advance is they are less sensible to wear.
 
#9 ·
Well I brought a set to get me through until a set of Denso Platinums get here from the states.

IMO they're 4-pole design is crud for that very reason. You only need one electrode to spark to. The Bosch super 4 will only spark to the nearest (least resistance path) electrode anyway, you don't get more than one spark.

I'd prefer an open single electrode design anytime, that has a spark which is much more freely surrounded by fuel/air rather than redundant electrodes...
 
#11 ·
Brian_S said:
Well I brought a set to get me through until a set of Denso Platinums get here from the states.

IMO they're 4-pole design is crud for that very reason. You only need one electrode to spark to. The Bosch super 4 will only spark to the nearest (least resistance path) electrode anyway, you don't get more than one spark.

I'd prefer an open single electrode design anytime, that has a spark which is much more freely surrounded by fuel/air rather than redundant electrodes...
thats the point - one gap will be better than the others, so it will choose the best one of the 4. As people dont set the gap these days the super4s are you best bet at getting the correct gap
 
#12 ·
errrrr, sorry, who doesn't set the gap nowadays? Thats the only important part of the plug!! maybe apart from the temperature range. Why is one pole worse than that? It's exactly the same but without the spark shrouding, which seems a bit pants to me. Also, the shortest gap is not always the best!!

Ronald, cheers for the tip. They are coming pre-set for my needs. $5 ea. :D
 
#13 ·
Brian_S said:
errrrr, sorry, who doesn't set the gap nowadays? Thats the only important part of the plug!! maybe apart from the temperature range. Why is one pole worse than that? It's exactly the same but without the spark shrouding, which seems a bit pants to me. Also, the shortest gap is not always the best!!

Ronald, cheers for the tip. They are coming pre-set for my needs. $5 ea. :D
You are probably right - but I dont think many people bother setting the gap.
At over £20 the super 4s seem a rip off anyway.
 
#14 ·
the only real benifit of the bosch plugs is that they last a bit longer becauase the electrodes get worn down a 4th less than single electrodes although with platinum plugs the difference is negligable. i use bosch s 4.
mat
 
#16 ·
I had problems with super 4's in my 1.4 16v. 2 of them died on me! Its hard to describe what they went like but when I took them out some of the white part was missing!

I spoke to a electrical diagnostic centre and he said to just use the standard plugs for your engine; that fancy ones can be too efficent and work detrimentally.
 
#22 ·
ronald said:
Nonsence.

It gives one spark to witch ever elektrode has the least recistance.

Advance of these is that they have 4 possibilities to spark to.
and so will spark some what easier.

Second advance is they are less sensible to wear.
correct!!!

and it leaves '3 shadows' from the other eletrodes for the 'flame front' to work through...,,

think about it for a while...
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top