Moderated Discussion Areas
ContinuousWave: Whaler Performance
Proper spark plug selection
|Author||Topic: Proper spark plug selection|
posted 06-27-2001 04:39 PM ET (US)
I am unsure which NGK spark plug model would be best for my 1978 85hp Johnson. The owner's manual lists a now obsolete Champion plug model, and from what I gather, NGK makes superior plugs. Pointing me to the proper plug would make me smile.
posted 06-27-2001 04:51 PM ET (US)
Do a search for NGK and you will see their website. B7HS gapped @ .030.
posted 06-28-2001 03:24 PM ET (US)
I use NGKs in my 85 hp Johnson and have had very good luck. Champions, in my opinion, are junk.
posted 07-03-2001 11:38 AM ET (US)
Anyone with a Ficht switch over To NGK’s ?
2001 115 came with Champion XC12PEPB. Dealer recommend sticking with Champion during the warranty period.
posted 07-05-2001 05:05 PM ET (US)
Thanks for the help, fellas. I went ahead and ordered some of these plugs, along with the supposedly superior Platinum plugs that also are supposed to be compatible with my old engine.
posted 07-06-2001 10:25 PM ET (US)
I have a 1975 85h.p. Johnson and I have tried Champion, NGK, Autolite, and Denso. My engine seams to prefer the Densos gapped at the reccomended .040 gap Top end and Trolling! Regards-Jack Graner.
posted 07-09-2001 12:38 PM ET (US)
I have been advised to stick with the Champion plugs for the Ficht Engine as this plug was made for OMC to combat fouling.
I have Indexing instructions if anyone wants them I can e-mail them.
posted 07-09-2001 09:30 PM ET (US)
BTW, indexing is setting up the plugs so
that the opening on the electrode points in
a particular direction. It can be done by
using shim washers under the plug, or by
playing mix and match games with plugs.
Racers do it to optimize power. I presume
The racers also occasionally do it so the
Sounds like the FICHT needs it to live.
posted 07-10-2001 09:37 AM ET (US)
I think it does need indexing to live also.
From what I can gather Ficht engines benefit from indexing by reducing plug fouling. In their case the plugs are indexed with the open side of the spark plug gap facing the injector. It supposed to promote a better burn, less plug fouling and increase power. On 115 HP the increase in power is negligible from what I have been able to read. The main reason would be plug fouling in this case.
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