Re: Spark Plugs??

Boy oh boy!

I installed +4 Bosch in my 3.5 and it runs better than ever. I even
have buddies with turbo charged cars and platinum is ALL they will use.

Some people have issues with plugs other than "originals", however I
have not. Some older cars had resistor wires and non resistor plugs.
Then one day the owner switches to resistor plugs and then notices a
drop in top-end performance or poor idle.

Bimmers run lean and switching to a plug with a more intense spark can
cause undesireable running as mentioned above. Why do people buy
Platinum? Usually for performance right? That means that you are going
to drive harder thus increasing combustion temperatures on a
lean-burning, air-leak prone engine.

When going Platinum first make sure you have no air-leaks, install a
better coil, and fer gosh sakes choose a plug that is one heat range
cooler than stock.

On my 85 635 I got a bit more performance and improved my idle by
making a simple adjustment to my ECU. In the ECU is a rotary switch
that adjusts timing and fuel injector pulse width. I increased pulse
width +2% and I have never been happier.

Anyone want my old Silbers?
DieInterim

.

Relevant Pages

  • Re: Platinum plugs?
    ... The change interval for Bosch platinums is about 50 feet. ... For some reason they really don't want to work in Jeep 258 engines and some 4.0 Jeep engines. ... With the Bosch platinum plugs, they develop misses all the way up and a 'bad' idle miss. ...
    (rec.autos.tech)
  • Re: Plugs
    ... For the Saturn, access is so easy that changing all the plug takes 10 ... Double platinum AC Delco's... ... I know you should use "resistor' plugs, but what part numbers am I ... S-series Saturns use a "waste spark" ignition system so the only thing ...
    (rec.autos.makers.saturn)
  • Re: Easiest Way To Change Spark Plugs for a 2000 3.0L OHC Taurus
    ... In it the coil fires two spark plugs at once; one on the compression stroke and the other on a cylinder 360 deg out of phase. ... The current flow goes from the high-tension lead to the center electrode on one cylinder, across the gap, to the ground strap through the engine structure to the ground strap on the cylinder 360 away, across that gap, and finally returns to the coil pack. ... By arranging the coil wiring appropriately one bank can have platinum on the center electrode while the other bank has platinum on the ground strap side. ...
    (rec.autos.tech)
  • Re: 95 Honda Prelude S Spark Plugs: To Platinum or Not Platinum
    ... Should I use NGK platinum or non-platinum spark plugs in my 95 Honda ...
    (rec.autos.makers.honda)
  • Re: Band Needs Soundproof Advice in Seattle/Bellevue Area
    ... build removeable window "plugs" ... build risers for the drum kit and amps to reduce structural sound ... what are the best isolators to install underneath ...
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