Bosch 4 electrode spark plugs
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Bosch 4 electrode spark plugs
I saw these and was wondering if they're a good idea? I would have thought the spark would just jump the one gap with the lowest resistance of the four and it doesn't look like the gap(s) are adjustable either but Bosch are a reputable company so what do you reckon?
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Re: Bosch 4 electrode spark plugs
And they do that, so potentially might have a slightly longer service life.ratwing wrote:I saw these and was wondering if they're a good idea? I would have thought the spark would just jump the one gap with the lowest resistance of the four and it doesn't look like the gap(s) are adjustable either but Bosch are a reputable company so what do you reckon?
Stick with NGK, job done.
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Re: Bosch 4 electrode spark plugs
NGKstevieturbo wrote:And they do that, so potentially might have a slightly longer service life.ratwing wrote:I saw these and was wondering if they're a good idea? I would have thought the spark would just jump the one gap with the lowest resistance of the four and it doesn't look like the gap(s) are adjustable either but Bosch are a reputable company so what do you reckon?
Stick with NGK, job done.
TVR Chimaera RV8 Mods & Megasquirt
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Way back in my yoof I worked for a bloke who was a marine mechanic and a lot of the outboard motors had a full ring outer electrode with the central one, called surface gap or ring gap if I recall.
The same technology is used on F1 and MotoGP engines these days.
As an aside, aircraft spark plugs are multi electrode units, so they can't be that bad, and they merely get sandblasted and regapped at sevice intervals until they start to breakdown on testing.
The same technology is used on F1 and MotoGP engines these days.
As an aside, aircraft spark plugs are multi electrode units, so they can't be that bad, and they merely get sandblasted and regapped at sevice intervals until they start to breakdown on testing.
Cheers,
John
John
Aircraft engines have generally low specific outputs in the quest for reliability. Using four electrode plugs may make them more reliable - but with no benefit to performance - or even a slight disadvantage.
I did have a set in my RV8 and can't really say if they had any advantages or disadvantages. Had to change to a resistor type when I went EDIS, so got normal types.
I did have a set in my RV8 and can't really say if they had any advantages or disadvantages. Had to change to a resistor type when I went EDIS, so got normal types.
Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
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- SimpleSimon
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This guy speaks sense, you really dont want to know how many NGK plugs I have fitted over a 30 year motor trade career if I cant get em I will gladly fit Denso quality plugs FACTstevieturbo wrote:Wouldnt care if they were cheap....NGK's are cheap too.
I'll stick with NGK ( or Denso )
TVR Chimaera RV8 Mods & Megasquirt
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