spark plugs
Thread Starter
Racer
Joined: Jul 2005
Posts: 317
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From: PA
spark plugs
Guys, anyone know the difference between the ac r45ts and the r44tx other than the heat range. I run r45ts's in all my 350 chevy HEI's, I'm trying to figure out why they say to gap the r44tx (plug gm says to use in the Vette) at .060". seems a little wide, the heads are just standard 882's with a flat top pistons, I know a lot of guys run the platinums but I don't. any imput??
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by pauvil
Guys, anyone know the difference between the ac r45ts and the r44tx other than the heat range. I run r45ts's in all my 350 chevy HEI's, I'm trying to figure out why they say to gap the r44tx (plug gm says to use in the Vette) at .060". seems a little wide, the heads are just standard 882's with a flat top pistons, I know a lot of guys run the platinums but I don't. any imput??
The TX is a "Wide Gap" plug intended for use with a "High Energy Ignition" (HEI).
The -TS is for standard (points/condenser/coil) ignition.
Thread Starter
Racer
Joined: Jul 2005
Posts: 317
Likes: 0
From: PA
Thanks, car is missing and backfiring bad, has an HEI distributer had r45ts plugs gapped at .035" I opened them up to .055" but had no luck, put in a brand new billet distributer with 50,000 volt coil and its still bad. Ordered the r44tx plugs, try them later. .060" seems like a big gap even for HEI.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by pauvil
Thanks, car is missing and backfiring bad, has an HEI distributer had r45ts plugs gapped at .035" I opened them up to .055" but had no luck, put in a brand new billet distributer with 50,000 volt coil and its still bad. Ordered the r44tx plugs, try them later. .060" seems like a big gap even for HEI.
I'm not convinced that plugs are your problem. Is your engine grounded well?
Thread Starter
Racer
Joined: Jul 2005
Posts: 317
Likes: 0
From: PA
Usually it's not ignition, your right, looks grounded OK, I have to drain the fuel as I just picked this up and the inspection sticker is from 97, It was pretty much empty and I just dumped 3 gallons of super to try to move it. I did drain and clean the carb. I noticed that the plug wires are metal shielded and they have grounds on them that are not hooked up. I'm trying to do the obvios befor I get into the valve train and timing chain ect.
