Racing spark plugs different length for classic impreza turbo?
3 Attachment(s)
Have just bought some racing type spark plugs for my classic impreza turbo but compared to the pfr7b plugs the overall length of threads/tip is shorter. Will this effect anything?
See attached pictures. cheers |
I would check with whoever you bought them from that they have supplied the correct plugs as im sure you could do a bit of damage with the incorrectly installed ones fitted:thumb:
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They look ok to me, If your worried grab a feeler guage and check the gap:thumb: The threaded section only looks longer on your new plug as the old plugs washer is crushed:D
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be carefull geting raceing plugs mate i bought a set of densos fitted them an had to get a new knock sensor because it blew it spent 60 quid took them out an put bosch ones back in then had to pay for the sensor
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What number are the new ones??
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Pretty sure the plug number for classic racing 8s is 3474-8
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Will check numbers on boxes tomorrow.
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Originally Posted by WildPikey
(Post 9816063)
They look ok to me, If your worried grab a feeler guage and check the gap:thumb: The threaded section only looks longer on your new plug as the old plugs washer is crushed:D
You are correct about the washer and threads are same length, mainly tip part different length. I gapped them to 0.7 picture was then taken. Car runs and drives fine just curious for long term effect and at £30 each I want to be 100% sure are good. |
look fine to me. as above the new one has crush washer not crushed.
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got some iridium plugs in mine too nothing bad to report and they over 2yr old now.
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They are ngk racing competion R7434-8.
Does this sound correct? cheers |
Yes that is correct :)
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