20psi, is it time for colder plugs?
Thread Starter
single digit dreamer
iTrader: (6)
Joined: Mar 2002
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From: omaha ne
20psi, is it time for colder plugs? i have been running "tr7"(br7ef) plugs. i am now pushing over 20psi at the track. is it time for the next colder plug or are th 7's still ok? i have a set the next colder plug, r5671a-8 wich some people like to call a tr8. i let the truck idle for a long time at the track, will the 8's foul out sitting there idleing?
I ran TR8's per Intmd8's reccomendation with the 9.4@143 blower combo. Once in a while the plugs would get a little fouled but I spent zero time messing with my idle tune.
I'm running AllPro heads now and run different plugs.
I'm running AllPro heads now and run different plugs.
Originally Posted by Pro Stock John
I ran TR8's per Intmd8's reccomendation with the 9.4@143 blower combo. Once in a while the plugs would get a little fouled but I spent zero time messing with my idle tune.
I'm running AllPro heads now and run different plugs.
I'm running AllPro heads now and run different plugs.
P.S. John you got the car hooking yet??
9 Second Club
Joined: Nov 2003
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From: Norn Iron
I'm running NGK PFR7B plugs. So far they seem to be working fine for me.
They are an OE Subaru fitment, gasketed double platinum plug. Ive been using them since July. Say about 2000 road miles and about 20 passes ? including a standing mile.
Must admit, havent removed them in that time to have a look at them.
They are an OE Subaru fitment, gasketed double platinum plug. Ive been using them since July. Say about 2000 road miles and about 20 passes ? including a standing mile.
Must admit, havent removed them in that time to have a look at them.
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Thread Starter
single digit dreamer
iTrader: (6)
Joined: Mar 2002
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From: omaha ne
making a run and pulling a plug would tell me nothing since i have no idea what i am looking at 
last weekend my last run down the track at over 20psi i did get some KR the the last part of 3rd gear but i think it is fuel related. i am working on the fuel but want to be as ready as i can be. looks like i will be trying the 8's
last weekend my last run down the track at over 20psi i did get some KR the the last part of 3rd gear but i think it is fuel related. i am working on the fuel but want to be as ready as i can be. looks like i will be trying the 8's
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FormerVendor
Joined: Dec 2001
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From: WWW.SPEEDINC.COM
Originally Posted by parish8
making a run and pulling a plug would tell me nothing since i have no idea what i am looking at
Pull a plug, post a picture of the ground strap, then cut the threaded portion off and post a picture of the insulator.
Originally Posted by Pro Stock John
I ran TR8's per Intmd8's reccomendation with the 9.4@143 blower combo. Once in a while the plugs would get a little fouled but I spent zero time messing with my idle tune.
I'm running AllPro heads now and run different plugs.
I'm running AllPro heads now and run different plugs.
Closed ex-Sponsor Account
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From: Wichita Falls, TX
That much power I think an 8 is still too hot. you are dealing with alot of HP. 8's might be fine on the street, but a 9 or even a 10 might have to be installed to keep the detenation away.
Originally Posted by NXRICKY
That much power I think an 8 is still too hot. you are dealing with alot of HP. 8's might be fine on the street, but a 9 or even a 10 might have to be installed to keep the detenation away.
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From: Norn Iron
What sort of duration are these 8's, and 9's being held at full load ? Either on track ( which obviosuly isnt very long ) or on the dyno ???
I know when I did my standing mile, duration was approx 27 seconds of WOT ( aside from 2-5 shifts ), which at the time seemed like a lifetime watching my AFR guage lol.
I had no detonation issues whatsoever. Pump fuel + meth
I know when I did my standing mile, duration was approx 27 seconds of WOT ( aside from 2-5 shifts ), which at the time seemed like a lifetime watching my AFR guage lol.
I had no detonation issues whatsoever. Pump fuel + meth
Originally Posted by stevieturbo
What sort of duration are these 8's, and 9's being held at full load ? Either on track ( which obviosuly isnt very long ) or on the dyno ???
I know when I did my standing mile, duration was approx 27 seconds of WOT ( aside from 2-5 shifts ), which at the time seemed like a lifetime watching my AFR guage lol.
I had no detonation issues whatsoever. Pump fuel + meth
I know when I did my standing mile, duration was approx 27 seconds of WOT ( aside from 2-5 shifts ), which at the time seemed like a lifetime watching my AFR guage lol.
I had no detonation issues whatsoever. Pump fuel + meth
9 Second Club
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From: Norn Iron
By duration, I mean sustained full load. 2 seconds at WOT isnt going to create the same heat isues, as 30 seconds at WOT.
Similarly, 10 sec passes, wont be as harmful, or have the same heat issues as a car used for circuit racing, where there could be several minutes of WOT or close to it.
Plug deterioration over time/events is a different matter altogether.
Similarly, 10 sec passes, wont be as harmful, or have the same heat issues as a car used for circuit racing, where there could be several minutes of WOT or close to it.
Plug deterioration over time/events is a different matter altogether.
On The Tree
Joined: Aug 2005
Posts: 152
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From: St. Petersburg, Florida
Originally Posted by INTMD8
Make a pull, pull a plug and check it.
And fwiw I haven't pulled a plug since I put them in in the spring and I run the 8's.
And fwiw I haven't pulled a plug since I put them in in the spring and I run the 8's.
I understand an NA motor, or blower.. the turbo???