Proper plug gap?

[nomods]

I noticed in buick manual that came with car that if your regal has turbo 3.8 that the plug gap should be .045.I have always run .035.I kept the original plugs and checked them.....sure enough .045. ACR44TS

 

[salvageV6]

Service manual says .035" that may be a typo in the owners manual, the .060" for the other engines is backed up by the service manual.

 

[william B.]

.024 works

 

[crisp76]

I run the R43TS with a .035 Gap. My stockers R44TS also had a .035 and did real well.

 

[nomods]

Service manual says .035" that may be a typo in the owners manual, the .060" for the other engines is backed up by the service manual.

did you not read my whole post? I checked the ORIGINAL plugs........045

 

[SS/GN]

Plug gaps don't make HP and too much is not as good as too little. I like a .028

 

[Turbo6inKY]

did you not read my whole post? I checked the ORIGINAL plugs........045

That's just what the dude at the factory gapped them to... or didn't gap them at all and just shoved them in.

Plug gaps don't make HP and too much is not as good as too little. I like a .028

This. The gap needs to be wide enough to light the mixture, but not so wide the coil has trouble triggering the spark.