plug question..

[bucwildbob]

ok, autolite part number 64 is suppose to be in the truck.. I work at advance auto parts and looked it up there at work. It listed part number 103. It is an eigth of an inch longer than the 64. Im sure its not a good idea, but i am more curious than anything. Would using a plug slightly longer cause issues ( i have not pulled the head and dont know how much clearance they have) and it i did use a slightly longer plug what effect would it have on compression? if any. ill be using the correct plugs unless there is some random benifit to using this plug

 

[(V)erciless]

Re: plug question..

ok, autolite part number 64 is suppose to be in the truck.. I work at advance auto parts and looked it up there at work. It listed part number 103. It is an eigth of an inch longer than the 64. Im sure its not a good idea, but i am more curious than anything. Would using a plug slightly longer cause issues ( i have not pulled the head and dont know how much clearance they have) and it i did use a slightly longer plug what effect would it have on compression? if any. ill be using the correct plugs unless there is some random benifit to using this plug

"suppose" to be in the truck? I would say either buy the NGKs or pull one of your plugs (fun fun) to make sure it is a 64

 

[Upgrade]

Re: plug question..

A too long plug can stick a thread into chamber. The thread will get hot and glow.
Glowing metal in the chamber is bad.....
Or the plug ground strap can get hit by the piston and stop working.

Compression- not worth much, on the order of 1 cc.

 

[bucwildbob]

Re: plug question..

thank you upgrade, that was exactly what i was asking. and btw, ngks suck

 

[Davemc1963]

Re: plug question..

thank you upgrade, that was exactly what i was asking. and btw, ngks suck

Thats the first time I have heard negative comments about NGK. (apart from platinum tips not being recommended for blown applications, but that doesn't just apply to NGK) I have always found them to be a good plug. As long as you have the correct one for the application!
You dont want anything ie a longer plug sticking further into the chamber than necessary. Especially an engine prone to detonation/pre-ignition. The projected core nose design of many plugs that are now commonly fitted to modern engines tend to have a 'self cleaning' design that reduces fouling probably works against detonation prone chamber designs.
You should always run the 'coolest' plug you can as well. Although with this, as with everything in life the trade off is that fouling can result in certain conditions/circumstances.
The last thing you want is a plug that glows red hot because it cant dissipate the heat away because it is either the wrong plug and/or heat range. This can/will seriously do your SyTy engine no good.

 

[syclone3]

Re: plug question..

I have used hundreds and hundreds of sets of NGK plugs in various turbo vehicles. I would hardly say they suck. If they do for your application. Good luck finding a better quality plug in the correct heat range at an affordable price.

 

[SYO237]

Re: plug question..

and btw, ngks suck

your reason?

 

[Nitrous]

Re: plug question..

I use NGK on almost all of my nitrous applications and I just started using Delco Irridium. No issues here, infact NGK has been one of the better plugs and seem to outlast the Autolites I used to use. JMHO.........................:2cents:

 

[SY2932]

Re: plug question..

NGK's here for seven years plus with no problems.

 

[NecroWolf]

Re: plug question..

i run ngk in everything i have and dad even puts them in his harley

 

[13Pelle]

Re: plug question..

I have used NGK plugs for years also without problems, in both cars/trucks and motorcycles. I have also used Bosch plugs without any problems. Hmmmmm.......

 

[midnightbluS10]

Re: plug question..

ok, autolite part number 64 is suppose to be in the truck.. I work at advance auto parts and looked it up there at work. It listed part number 103. It is an eigth of an inch longer than the 64. Im sure its not a good idea, but i am more curious than anything. Would using a plug slightly longer cause issues ( i have not pulled the head and dont know how much clearance they have) and it i did use a slightly longer plug what effect would it have on compression? if any. ill be using the correct plugs unless there is some random benifit to using this plug

The longer plug is probably for Vortec heads.

edit: according to RPM it is.

 

[Aus-Sy]

Re: plug question..

Just got to say that NGK plugs rock! :rock: I have used them for a long time now in everything I own, and must say, BANG FOR BUCK best thing you can buy for you truck, car, bus etc..

 

[SY2455]

Re: plug question..

thank you upgrade, that was exactly what i was asking. and btw, ngks suck

Just to tell you a little story as far as spark plugs go. I have used all of the major brands of spark plugs including Autolight in the 37 years of driving, both legal and illegal. They all would last about 1.6 years before they would start breaking up or start to fail. Some would last a little longer,some a little shorter and since they all lasted about the same I stay with AC plugs and when they went to the platinum I change over too and now I was getting about 2.3 years on a set. Then I brought the truck that I wanted from the 1st time I had seen a advertisement in the Detroit Metro Airport in June of 1991. Then came a wake up call, I was only getting about 3 to 4 months tops using the stock factory plugs before they would start breaking up.

After doing some research on plugs and seeing what other people said about them on this site. I once again decided to try NGK plugs but I used the UR-6 plugs glap at .028 as it was 1 heat range colder and the truck ran so much better than before. Now the plugs would last up to 6 months before it felt like the truck fell off a cliff. The 2nd time that I change them with the same UR-6 plugs. I added a MSD-6A and a MSD Coil to the truck only to find that I had to change the cap and rotor after 1 month because the hotter spark burn 6 little holes in the side of the distributor cap where the brass terminals were for each plug. I replace the cap and rotor and removed the MSD coil to tried it that way and life was right again with a gain of gas mileage of about 2mpg in the city, the truck was now at 300 miles for 15 gallons of gas.

A friend of mine that worked at a auto parts store told me one day that NGK was coming out with a new plug call a Iridium plug and wanted to know if I wanted to try them out for only $2.75 ea and give them some feed back on them. So I installed the NGK UR6IX plug with the MSD Syclone wire set. What I seen with the new pugs and wires was a increase to 20 mpg city and 25 mpg on the HWY with the cruise control set at 70 to 75 mph. This set that is in the truck has been in for 3+ years with no problems at all.

I now know though research here on this site that I had burn the holes in the distributor cap because I had forgot to vent it, so once I get back to normal and back to work I will be looking at installing the MSD coil again.

 

[Richard Le]

Re: plug question..

My truck has a very smooth idle with the NGK UR6IX Iridium plugs. So far I like them a lot.

 

[midnightbluS10]

Re: plug question..

This turned into a "who likes NGK?" thread quick....

I still say those plugs were for Vortec heads, not stock LB4's

 

[SY2455]

Re: plug question..

This turned into a "who likes NGK?" thread quick....

I still say those plugs were for Vortec heads, not stock LB4's

Kind of funny when you think about it and all because the post thread starter bash them :rotf::rotf:. The 103 are for the Vortec heads. If he has the stock heads then he should run the 23 :tup:.