This is topic spark plugs w/ new blower in forum Tech Talk at Northern California Ford Owners  .


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Posted by javier (Member # 547) on :
 
well i just installed a vortech blower on my roush. the question is should i change the spark plugs and what should i gap them too.
 
Posted by mtbaughs (Member # 4052) on :
 
Yes you have to change them to non-platinum and gap them in this range .32-.35

[ April 30, 2004, 09:58 PM: Message edited by: mtbaughs ]
 
Posted by mtbaughs (Member # 4052) on :
 
autolite 103's

Don't run any 2 or 4 prong bosch style plugs or other bs just stick with a standard autolite or motorcraft plug as these tend to cause missing, detonation and things along those lines
 
Posted by Black94 5.0 (Member # 655) on :
 
Autolite's... [patriot]
 
Posted by vpr_klr (Member # 3353) on :
 
why wouldn't you recommend platinum's on a blown car, even if they are supposed to be factory equipped??? I run TR7 ix's(two heat ranges colder, gapped at .35, iridium which is similar but a harder alloy to platinum) and the car picked up a lot of hp (14 rwhp at 6000) on the top end because the autolites would start to misfire after 5500 rpm(at least that was what powertrain dynamics was telling me). I mean, my car(91 GT) is not factory equipped with platinum's but the 2003 is. Just would like your input [patriot]
 
Posted by mtbaughs (Member # 4052) on :
 
Well pretty much every car that showed up on the dyno I have seen with platinums pinged like mad at any plug gap. The tip I guess is more prone to do this I guess. 9 times out of 10 when a car would come in with a new supercharger kit installed with the factory platinums still in it pinged, we removed them for the non-platinums and the problem went away. I know when the iridiums came out they were supposed to be the next best thing to sliced bread but we tried them as well on many blown cars of which pinged or had a miss right after they went in. Your case is one of about 3 that I know that got away with that style plug.
 
Posted by mtbaughs (Member # 4052) on :
 
We also tried a colder heat range platinum with the same results.

[ May 01, 2004, 09:05 PM: Message edited by: mtbaughs ]
 
Posted by vpr_klr (Member # 3353) on :
 
check the general talk section please...........
 
Posted by 2stangs69-91 (Member # 1951) on :
 
I went to autolite racing plugs 1 step colder and gaped at .030. they work great.
 
Posted by Big Kahuna (Member # 4250) on :
 
FWIW, my turbocharged import (240sx w/sr20det) hates platinums. Every shop has said platinums are too hot, which is why on any forced induction
uses regulars or on imports, 2-stage colder iridiums. Stick with the autolites, dont blow up your engine sticking platinums in your motor. Also i know this works for turbos, but working with a colder plug can actually allow you more room for boost, just a thought. Stay away from the gimmicks, Platinum is ok for n/a but is really for people who cant change their plugs as often, ie "the basic consumer".
 
Posted by racercosmo (Member # 1864) on :
 
On mild boost applications, we run NGK TR6s
 
Posted by javier (Member # 547) on :
 
Picked up the Autolites and installed them..

I have my dyno tune on wednsday..

hope everything goes great...
 




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