High boosted applications (16-22psi) Spark Plugs
12-31-2006, 08:06 AM
#1
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High boosted applications (16-22psi) Spark Plugs What kind of spark plugs are you running? I used to run TR6's until 13psi with no problems, but now im looking at 18-20psi so im not sure which plugs to go with or how many degrees colder i should aim at.
Thanks.
Thanks.
12-31-2006, 09:28 AM
#6
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Im using a NGK PFR7B double platinum in mine. More usually found in the Subaru/Jap scene.
Working fine for me
gasketed plug, even if its supposed to take a tapered seat. Who cares 
I had used TR6's before that, with no problems.
I just wanted a colder plug before I did my standing mile run, and they have been in since mid-july, some 2500miles and 20+ passes plus a couple of short handling tracks and 1 standing mile.
Car drives great.
Working fine for me
gasketed plug, even if its supposed to take a tapered seat. Who cares I had used TR6's before that, with no problems.
I just wanted a colder plug before I did my standing mile run, and they have been in since mid-july, some 2500miles and 20+ passes plus a couple of short handling tracks and 1 standing mile.
Car drives great.
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12-31-2006, 09:37 AM
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Most Japanese turbo cars come with platinum plugs from the factory.....
In fact, everyone Ive ever come across did, Nissan, Subaru, Toyota....Im sure they cant all be wrong.
Although long service life is an important factor. And perhaps others will disagree, but a platinum plug will produce a better spark, and require less engergy to do so..
But when regular cheap TRx plugs are working fine, no real need to change. I just used what i could easily get locally, and I know are good plugs.
In fact, everyone Ive ever come across did, Nissan, Subaru, Toyota....Im sure they cant all be wrong.
Although long service life is an important factor. And perhaps others will disagree, but a platinum plug will produce a better spark, and require less engergy to do so..
But when regular cheap TRx plugs are working fine, no real need to change. I just used what i could easily get locally, and I know are good plugs.
12-31-2006, 09:50 AM
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Originally Posted by LSs1Power
So TR8's are NGK 7173.... Anyone know the TR7 name under NGK catalog? There is no such thing as TR7 in NGK catalog.
Originally Posted by Superado
BTW...that plug is also known as an NGK 4554...available at the parts store w/ an Irish name for $1.59 ea...they may have to get them from their nearest warehouse or hub store, but usually by the next morning...
12-31-2006, 10:40 AM
#12
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Originally Posted by Navy David SS
NGK-8's here. And why would you want to use a $7-8 plug if you have to (and most do) change them out on a monthly/weekly basis? I paid a $1.50 for each of mine.
David
David
12-31-2006, 01:46 PM
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Originally Posted by NA$TY-TA
TR6's here..............
We did put TR6's in it for now to run it N/A before we bolt the SC to it.... It seems like you ran 20psi with no problems... U did it on race gas right? Whats your compression ratio?
01-01-2007, 12:08 PM
#15
Originally Posted by LSs1Power
We did put TR6's in it for now to run it N/A before we bolt the SC to it.... It seems like you ran 20psi with no problems... U did it on race gas right? Whats your compression ratio?
yeah 20 psi.....
8.87:1 Comp....
01-01-2007, 09:06 PM
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I ran TR6's up to 17psi without a problem. Just bought the next step colder plug. BP7EFS stock number 3526 at Advance Auto. $1.98 each...there is no "TR7"...but this would be it if they kept the TR designation.
01-01-2007, 09:44 PM
#20
Originally Posted by onfire
I ran TR6's up to 17psi without a problem. Just bought the next step colder plug. BP7EFS stock number 3526 at Advance Auto. $1.98 each...there is no "TR7"...but this would be it if they kept the TR designation.
Good to Know i might try those just because next time....
because the NGK plugs are so cheap i dont care to even try and keep them in the car for to long....i just replce them with an oil change or when ever im headed to the track...