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How often do you change your plugs & oil on a drag car?

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Old 04-10-2005, 03:53 PM
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Default How often do you change your plugs & oil on a drag car?

I just recently changed the oil in the car from the cam swap and was wondering how often you changed your oil with a drag car. Also, I probably have 10-15k miles on the plugs and planned on replacing them soon. How often do they need to be changed on a drag car? Thanks.
Old 04-10-2005, 03:58 PM
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I change oil ever 3-4 races, sometimes less. Plugs once a year and check a few now and then.
Old 04-10-2005, 06:26 PM
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Plugs maybe every 350-400 passes, oil - when it starts to darken up maybe every 100-150 passes.

But mine is a cam only car,the more radical the set up,the more often you change it.
Old 04-10-2005, 06:45 PM
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Damn

I change my nitrous car's plugs ever 10 or so passes.

Maybe I'm just paranoid.
Old 04-10-2005, 08:17 PM
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Well the oil is fresh, so it shouldnt be changed anytime soon. I dont drive the car very much and it hasnt been to the track in a few months. I use Royal Purple, do I need to change it that often on a drag car compared to regular oil? I know in a regular car, its 3-4k miles on regular oil and 5-7 on Royal Purple, so I figured there had to be some kind of range for higher grade of oil. On the plugs, again I probably have 10-15k on them right now, I'm sure its time to change them because they have probably 40 passes on them. What do you think?
Old 04-10-2005, 08:41 PM
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oil- 30 passes and 2k miles

plugs- when i do the oil

wires- for 125 i paid for the good Scott custom length wires, i'll likely never replace em
Old 04-10-2005, 10:35 PM
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For your application Jeremy you really shouldn't need to change the plugs that often. It's always nice to pull them every 10 - 15 passes and make sure something hasn't gone wrong.

And the more you beat on your engine, the more often the oil needs to be changed.
Old 04-11-2005, 09:45 AM
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I change my oil/filter every 2 weekends of racing. I change plugs about every 8 weeks of racing. Better safe than sorry.

Coach
Old 04-11-2005, 10:17 AM
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Originally Posted by Coach 02 A3 Z/28
I change my oil/filter every 2 weekends of racing. I change plugs about every 8 weeks of racing. Better safe than sorry.

Coach
Yup. I got a turbo car that I check plugs on after every (or every other) pass, especially when I'm tuning. As for oil...it gets drained after every weekend. Bad oil is really bad news for me.
Old 04-11-2005, 10:38 AM
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Oil every 15 runs. Plugs once a season.
Old 04-11-2005, 10:57 AM
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I change my oil every 2 times to the track.

The plugs are usually changed about the same. I run NGK 8s and I am always checking them.
Old 04-11-2005, 11:08 AM
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Originally Posted by bickelfirebird
Oil every 15 runs. Plugs once a season.
I thought with a car like yours you'd be pulling the plugs after every pass.
Old 04-11-2005, 11:12 AM
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He will be shortly.

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Old 04-11-2005, 11:18 AM
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My old N2O BBC with dry Sump I would change the plugs after EVERY n2o pass. So pretty much every pass was on a new set of plugs. I would do this for many reasons. One is from the advice of Jeff Prock, you cant read a get a good read on what happened on that pass if you have signs of a past run on them also. Another reason is when you break down what the cost per run is on a high dollar race motor, whats another 15.00 in n2o race plugs?

As for oil, after every race weekend.
Old 04-11-2005, 11:25 AM
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Originally Posted by Roofer Dave
I thought with a car like yours you'd be pulling the plugs after every pass.
I thought he was asking about "changing" plugs, not "checking" plugs? Anyway, running n/a, we check plugs every weekend. Now, running a 200 shot, we'll check plugs after every run.
Old 04-11-2005, 02:50 PM
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Wow, a lot more often than expected. I've got a cam only car, so I dont think I should change as often as many of you are. I'm sure my plugs are about ready to be changed. My oil is fresh, so what do you think I should change my oil and plugs at since none of you have a setup like mine? All of yours are way more serious. Thanks.
Old 04-11-2005, 02:50 PM
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Is there not a certain guideline or rule of thumb?
Old 04-11-2005, 03:00 PM
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Originally Posted by Dragaholic
Is there not a certain guideline or rule of thumb?
Not really. I do mine often since it's a 15 minute job. As for the oil, better safe than sorry.
Old 04-11-2005, 03:54 PM
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My H/C set up, I changed my RP every 2 weekends if I didn't go to the track or I'd change it after every track trip. Plugs, I'd check every Friday night. I'm paranoid on maintence. It also keeps me very in touch w/the way my motor is running.
Old 04-11-2005, 04:48 PM
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My NOS motor the oil gets changed every 10 passes or every weekend which ever is first. I also cut the oil filter open every time and see whats inside. Plugs get changed every pass. I also run Royal Purple.

My deal is if you cant afford oil, filter and plugs you shouldnt be racing.
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