accel plugs

[77tech9]

Does anyone know which plugs would be the best for a GN.
I've been running autolite plugs and reciently tried some u-grooves, I like the u-grooves but dont have the part number anymore.

14mm Thread, 3/4'' Reach, 13/16'' Hex, Gasket Seat - Projected Tip

That is how they list them on jegs.com and I wasn't sure about the tips or exact measurements. Does anyone have the part # or know which measurements are correct? Also they have hotter and colder plugs, I wasn't sure what I needed.

 

[bruce]

Avoid the disappointment, just use ACs.
Despite all the advertising hype, it's just hard to outdo a good normal plug.

 

[JToups386]

I've been running Autolite 24's for many years now, and am completely satisfied with them. They are one step colder than the factory plug, and are a conventional copper design. 1.09 - 1.29 at most Parts Stores.
AC Delco are fine too, (Although Delco is no longer the manufacturer).

The NGK "U-grooves" you are asking about should be UR-4's. I ran them about 8-10 years ago, and they were fine too, however they were more expensive and harder to find.

Personally, I'm a fan of the Autolite, and they're available almost anywhere.

 

[77tech9]

I run autolites in my stock car, they are great.

I didn't know NGK made the Accel Plugs, thanks for the # too.

 

[microELVIS]

This will be my 4th season on MSD supers, and everything still seems fine.

 

[TurboDave]

I ran Accel plugs once on my GN, ONLY ONCE

After a few thousand miles and some hard runs at the track it was very disturbing to see a TON of blow-by on the plug. Cylinder pressures had actually pushed past the metal part and showed up on the porceline(sp) (the part you can see when the plug's installed)

 

[77tech9]

wow, that sounds... fun...

I think i'll try the ngk ones for somethign new.

 

[2QWIK4U]

I use the colder NGK UR5, from NAPA OR CarQuest ,never a problem.I guess you'll hear pros and cons of them all, so here goes mine...I tried the Autolites,put them in the day before going to the track,car started skipping really bad and I didn't even get to run.Pulled plugs the next day and found that the insulator on #3 plug would spin all the way around and was shooting fire and blow -by out around it.Parts store warrantied it,new plug installed and ran good all of 2 days.Pulled plugs and the #6 plug was the problem,the inside white insulator was sucking up against the electrode and closing the gap.I threw all of them away and went back to the NGK,I tried to save a little money and should've known better.(NGK approx 1.60 ea Autolite approx 1.00 ea).Now this is just my personal experience from the only time using Autolite plugs just thought I'd share it.

 

[JToups386]

First off, I wasn't implying NGK makes the Accel plugs. I'm not sure who makes Accel, but, I think we got our signals mixed up.

As for 2QUIK4U's comments, it sounds like a coincidental bad experience. I will say, having worked for two Retail Parts Chains in the past, that a common reason for failure is due to the handling of the merchandise. When you have someone drop the box from the shelf to the floor, it tends to damage the porcelain, and/or the electrodes. Same thing happens when they're packed on the bottom of a stock shipment, and the box get thrown around in the back room, etc, etc... (It happens) I would also avoid buying "blister pack" plugs from mass merchants like Wal-Mart, etc, as they really take abuse during shipping and stocking, and being handled by the general public on a daily basis.

I change my plugs several times a year, simply because it's just too easy not to, and for assurance that I'm getting a good burn all the time. That's just my overly protective nature, and certainly not necessary as long as you're not fouling them or having other troubles.

However, I have been using Autolite 24's gapped at .032 or a "tight .035", for the past 6-7 years with absolutely no problems, and great performance. They also always look good as far as "the burn" on them. I'm not trying to advertise for any particular plug brand. My only true recommendation is AVOID platinum plugs, Splitfire plugs, or any of the other high-dollar "hi-performance" plugs. In my experience, for racing - nothing beats the burn of a good ol' fashioned conventional copper plug.

 

[77tech9]

Well if you look, accel u-groove and ngk v-groove are REALLY similar. I was just thinking they were the same, but they might be a little different.

Your right though, normals plugs always burn good.

 

[redhotrod]

Accels part # is 274. It crosses with ac delco r42-45ts but the accel plugs doesn't have a big ground electrode like a cr plug should.
Here's a good link for swapping different brand spark plugs-
http://www.gofastzone.com/techtips/sparkplugs/sparkplugs.htm
This is a SUPER LONG LIST, takes a while to load, even with cable connection, but it will cross reference about any spark plug. The accel 274 / ac delco # for our cars is right in the middle of that list.