Clutches, plugs, n other stuff...

[bdw18_123]

Originally Posted by XfireZ51

When it comes plugs let me recommend doing plug cuts and inspecting the ground strap for proper heat range. On my 92, I found the 41-602s to be a bit too hot. I use the NGK BRK6E. A step colder than the 602s . Important to get right heat range especially when tuning for WOT.
How you drive the car will be a factor. If you don't flog it, you'll likely need a hotter plug.

Did you mean BKR6E? Because BRK6E doesn't show up. I'm debating whether to go with the 41-602's or the BKR6E's in my '90 Z (stock other than relocating the IAT sensor and timing the exhaust cams to the 93-95 LT5 stock timing). I will be driving the car harder than the average person would.

What is the difference between hotter and colder plugs and what effects does it have to run the engine with too cold a plug or too hot a plug?