Ed Blue 03

I bought Autolite Racings plugs P/N AR 2593 for my angle plug heads on a 73 corvette with Hooker headers. I could use a shorter plug, would rather not dimple the header. Thanks.

Ed

jimmygmartin

Accel has short plugs for headers.

Ed Blue 03

I have read nothing but bad things about Accel plugs. Anyone have a good experience with Accel plugs, particularly the shorty ACC-0414S?

jimmygmartin

I use them and I have no problems. I have heard some people complain about the screw-on tips coming loose, just tighten the tip with a pair of pliers or apply a drop of lock-tite.

jeph054

I have not had very good luck with accel products. Admittedly most of my experence has been on the motorcycle end but I have to imagine the technology is the pretty much the same.

vettenoir

The Accel shorty plugs are junk. I have been through several sets. (was lead to believe there were no alternatives) I had major problems with the end unscrewing inside the spark plug boot. I tried roughing up the threads 1st and tightening them with pliers, but even this didn't stop this from happening. I would think that Loctite might have a negative impact on the conductivity of the plug. I have NGK plugs in the car now and have had no problems.

jimmygmartin

Tips coming loose a problem ?? Why would this be, if your plug wires snap on tight and you have good wire looms, the plug wires would hold the tips in place & how much would the tips move ?? I don't use lock-tite for the same reason you mention about conductivity, but this is most likely being overly careful. Remember the charge jumps the gap of the plug and the tip even if loose will still make contact. Unless the tip is coming right off you may be blaming the plug for another problem. I run a Vertex Mag, so maybe my spark is more hot then others, but I doubt it, the spark is weakest at start up due to the fact that the Mag makes it's own charge, and it always snaps right off.

Ed Blue 03

What is the Part Number for the short NGK plugs?

rastadr

Ed, do you want short plugs because you cant get a socket over the plug end?

gkull

I searched the world for a shorter plug to clear my headers with AFR angle plug heads.

No such thing unless your talking the accel shorties which are only .100 shorter than my platinum plugs.

See they really are only .100 shorter. Not a good picture.

Ed Blue 03

The reason I am looking for shorty plugs is: I put the standard plugs in the head and then just put a couple of loose bolts in the header to see how it matched up. I had read that there could be problems with vet street headers and angle plugs heads. I only have the passenger side head on, but one of the plugs (second from the firewall) looks like it will touch the header.

STLBLUES

ngk v-power plugs worked in my trick flow angle plugs with headers. I cant remember but I think ther were r4's. Shorter than accel. I will try to find the plug number for you. cya

gkull

The real only fix is to get a pipe shop to cut off the primaries near the flanges and weld in 3/4 of an inch pipe on each. That will place the pipes out far enough to clear any plugs and wires.

I have hooker S/C 1 3/4. I kind of blame them for a **** poor product. My headers come out farther on the drivers side before they curle down.

My Dart Pro 1 heads had no issues. My Brodix head were also fine. AFR heads is when i first had trouble. It's not their fault because they can't anticipate every type of header.

rastadr

Ed, ive had hookers, both sidepipes and comps on angled plug heads on my 70,73,80 and now the 82. even with header wrap there is room with a homemade socket. sears deep socket with the 5/8 bolt pattern at the ratchet side and a hacksaw. cut away at both ends. all you need is a thick 1/8"to engage the plug and for your open end to tighten it. fingers and patience for all but the last revolution and you only need this little tool for a few of the plugs.

gkull

This idea won't work when you can't even get the plug to start threading because the number 6 pipe with AFR heads. You can't even line up the plug. Then even if you installed the plug and then installed the headers you could not install a plug wire because the pipe will be touching. This is just an AFR head problem

STLBLUES

NGK UR4 is the plug I use on my angle plug heads and long tubes. It extends 1 3/4 to the tip once bolted in the head. You might find a shorter plug but this works for me. As far as a performance plug I do not know how hot it is. Hope this helps. cya

Ed Blue 03

It sounds like the shorty plugs will provide enough clearance so that the plug wire isn't touching the header. I would be willing to loosen the header to remove/install the plugs, if I had to. I just don't want to have to dimple or dent the headers to get clearance.

big_G

Same problem with Edelbrock Vic. Jr. heads and Hooker Super-Comps. I had to cut and lengthen 1 tube.

Ed Blue 03

What did you do to correct this?

gkull

You could start by reading every reply post before this question.