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Old 06-13-2013, 07:13 PM
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School me on a spark plug!

Just about finished with the motor build Ive got going. Needing to know what plug y'all will recommend to use. I have been using AC Delco RT45's non resistor plugs. I changed to a set of Edelbrock Performer RPM heads. Any recommendations? Going into a C10, 80% 1/8th mile track toy.


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Old 06-13-2013, 08:32 PM
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No recommendation included with the heads?
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Old 06-13-2013, 09:25 PM
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need some more info on the motor . but x2 on the heads. you should have a packet that came with the heads showing this info.
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Old 06-13-2013, 10:19 PM
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Quote:
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No recommendation included with the heads?
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Originally Posted by killeratrod View Post
need some more info on the motor . but x2 on the heads. you should have a packet that came with the heads showing this info.
Thanks guys. There was a manual but I seem to have lost it. I kinda remember it saying a champion plug. Was wanting the recomendation of the forum.

Killer, what else would you like to know about the moto?
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Old 06-13-2013, 10:38 PM
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I use NGK BCPR5ES in my E-Tec 200 heads. BTW, those Delco RT45 plugs ARE resistor plugs. That's what the "R" means in the number.

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Old 06-14-2013, 02:02 AM
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neede to look at the thread depth in the spark plug hole for a reach on the plug, also consider type of headers, you can get shorter plugs specific for that application also on a motor like you wanna be careful on the heat range more than likely you will end up for example ac delco 43, 44, 45 heat ranges being cold on 43 end. Most race engines on gas wanna be right in the middle. Also are your heads made for a taper plug or a washer type more than likely washer with aluminum heads.
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Old 06-14-2013, 06:58 AM
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Edelbrock Performer Heads Part Number 60909

If you have a set of 60909's the plug recommended is an AC Delco #5 (25164643). You can cross walk this number over to any other manufacturer you prefer.
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Old 06-14-2013, 07:22 AM
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I use NGK BCPR5ES in my E-Tec 200 heads. BTW, those Delco RT45 plugs ARE resistor plugs. That's what the "R" means in the number.
Thanks. I got the pn wrong. They are non resistor plugs.

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neede to look at the thread depth in the spark plug hole for a reach on the plug, also consider type of headers, you can get shorter plugs specific for that application also on a motor like you wanna be careful on the heat range more than likely you will end up for example ac delco 43, 44, 45 heat ranges being cold on 43 end. Most race engines on gas wanna be right in the middle. Also are your heads made for a taper plug or a washer type more than likely washer with aluminum heads.
I noticed the plugs need to be a washer type. Might be easest to call edelbrock.
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Old 06-14-2013, 08:18 AM
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I gave you the plug type. They recommend Champion RC12YC which is a 3/" reach 14mm gasketed plug. Since I hate Champion, I gave you the NGK number.









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Old 06-14-2013, 11:23 AM
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Find the Edelbrock heads on Summit, look at Suggested Parts, thatīll give you recommended plugs.
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Old 06-14-2013, 11:26 AM
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ngk bkr5e would work with those heads too.
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Old 06-14-2013, 11:30 AM
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autolite 3924's would work as well so would autolite 3923's the 3923's are 1 step colder then the autolite 3924's. The ngk bkr5e plugs also known as ngk 7938;s have the v groove on the electrode and they are my favorite plugs, i notice a crisper idle with them. I have ran autolite 3924's and 3923's and champion rc12yc and ngk bkr5e and the ngk bkr5e is deffanatly the better plug, the champion rc12yc ran well in my engine as well but not as well as the ngk bkr5e.
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Old 06-15-2013, 08:25 AM
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I gave you the plug type. They recommend Champion RC12YC which is a 3/" reach 14mm gasketed plug. Since I hate Champion, I gave you the NGK number.









.
Thanks greg t. I pickes me up a set of champion and ngk's to test out.
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Old 06-15-2013, 11:09 AM
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I missed a keystroke. That should read 3/4"
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