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different form sparkplugs for marnel heads


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#41 roketa

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Posted 20 March 2008 - 12:30 AM

Art,

I own the car that Kelly has been working on.  I bought some bushings etc from you.  I found out you have an adjustable cam gear on your car.  I believe it is a Starconquer Industries product.  Can you give me some more information on the gear?

Also when I was doing tuning we would usually go to a 1 range colder plug as we increased the boost.  With boost comes heat.  If you were running 20 psi boost,  what short plug would you use.

I would appreciate your help.

Thanks,

Roketa

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#42 artinist

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Posted 25 March 2008 - 02:09 AM

well the cam gear is just a stock replacement unit.

for the plugs i wouldnt get anything short unless you are sure they are sticking out into the chamber.
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#43 VICE

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Posted 06 December 2008 - 02:26 PM

I'm running a marnal head and I usually use the NGK's OEM recommended $2.13 plugs in most my plug changes, I have used the Rx-7 plugs peeps talked about and I think they looked like burned  eek1bluegreen.gif  afterwards..  I dunno I'm not one to be able to tell but that's my opinion, also I would like to know if the Iridium plugs are worth the almost $8's ? I have never used them, are they any good or am I ok sticking wit the lower priced NGK's, is that they are too short for the marnel tho will that be a problem..   party0035.gif

Edited by VICE, 06 December 2008 - 02:29 PM.

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#44 soulja620

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Posted 02 March 2009 - 03:34 AM

bump for an answer???
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#45 artinist

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Posted 02 April 2009 - 02:16 PM

I have no idea what a burned plug looks like. they are in fire all day after all. i melted a set of splifires if thats what you mean. burned is probably ok.

i have no idea on iridiums, never used them. as long as there is no misfire or pinging, that usualy means the plugs are not a source of problem or power gain.
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#46 Drive-By

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Posted 06 February 2010 - 04:42 AM

Hmm I have the TEP head (Street Performance Head) with port and polish. This thread is very interesting as I notice no one has mentioned DENSO plugs ? I got the DENSO's for my build as they are basically the HKS plugs but without the HKS logo on.

Anyway I hadn't given the length any thought until now.

The pics in the thread won't work for me, have the hosts been lost?

#47 Fuze

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Posted 14 September 2011 - 07:52 PM

Good source below, you can look up the PN's and see images with a ruler diagram. No guesswork on the length, etc.

Stock NGK plug BPR6ES: http://www.sparkplug...p?partno=BPR6ES

Shorter NGK BPR7HS: http://www.sparkplug...p?partno=BPR7HS

You can see the specs, and close up shots even.

http://www.sparkplugs.co.uk/index.htm


:ph34r:

Edited by Fuze, 14 September 2011 - 08:13 PM.

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