Step or two hotter plugs - Honda Prelude Forum

Qveon · 12-31-2003, 12:21 AM

Anyone have part numbers or cross ref numbers for one step and two step hotter plugs? SI and Vtec please

4bidden · 12-31-2003, 03:29 AM

Why do you want hotter?

ZFR6F-11 is stock heat range. Change the 6 to a 7 for one step colder.

Qveon · 12-31-2003, 11:45 AM

hotter = more power for NA

4bidden · 12-31-2003, 01:12 PM

I think you got something backwards man.....I dont know ANYONE running a hotter plug than stock. Research some more.

laughin2.2 · 12-31-2003, 01:46 PM

Hotter=greater chance of detonation and minimal gains.

4bidden · 12-31-2003, 01:47 PM

A stock plug is already a 6.

NirVTEC · 12-31-2003, 04:21 PM

Advance your timing a few degrees instead. Proven power gains from that.
I run +3* when I run N/A, and -3* when I spray, and thats with colder plugs.

Qveon · 12-31-2003, 04:46 PM

hrrrrmmmm........ok i might try my distributer.

4bidden · 12-31-2003, 06:38 PM

Just dont go out of stock Honda timing, which is +/- 2 degrees from 15. We tested it on the dyno, back to back, and anything above that hurt power.

Qveon · 01-01-2004, 12:17 AM

Quote:

Originally posted by laughin2.2
Hotter=greater chance of detonation and minimal gains.

This in theory doesn't make sense, because the hotter plugs would cause more compression.

laughin2.2 · 01-01-2004, 12:50 AM

Then try it.

rentien · 01-01-2004, 05:32 AM

higher the compression ratio more chance of detonation thats why you have to start using higher octane rated gas for higher compression ratio'ed engines... i think thats right i dont' have any experience with this in real life but this is what i gathered from the research i've done...

Qveon · 01-01-2004, 11:43 AM

Quote:

Originally posted by laughin2.2
Then try it.

I WOULD but i can't get a number for the plugs

laughin2.2 · 01-01-2004, 12:20 PM

should be a heat range of 5. Napa should have a big sheet with all of the plug part numbers on it. try a bkr5e