Indmar 325 spark plug GAP
Hey guys, I have found a ton of information reading old threads on here and asking questions, but have not come up with any one else noticing conflicting information regarding gaping spark plugs between Supra's 2003 online owners manual and Indmars online operators manuals.
During winterization I pulled the spark plugs to spray in fogging oil and the gap looked huge, I checked all of them and were just a touch over .060. The boat ran just fine for me, I never pushed it hard in the upper rpms for more than 10 seconds but it never got above 4200 rpm, full fuel, 400lbs of lead, front bag 3/4-full, 2 adults and 2 75lb dogs so I'm wasn't to worried about not meeting max rpm range. I have always averaged 6-10GPH for the 60+ hrs I've had it.
Via Supras web site I was able to download my 2003 owners manual due to not getting one with the boat. On page 57 it has the spark plugs as AC 41-932/MR43LTS with a GAP of .045
Via Indmars web site I was able to download 2003 to 2005 online operators manual. On page B-1 it doesn't have a TBI engine but a MPI with a AC 41-932 spark plug with a GAP of .060.
With that nugget of information made me wonder if I have a 2002 model year engine in my boat, so I downloaded a 1994 to 2002 operators manual. On page B-1 it has a TBI with a MR43LTS plug and a gap of .045 but makes no mention of the AC 41-932.
The plugs currently are AC 41-932 and look to be burning a tad rich and gapped over .060 but besides that just fine. So what do you guys all think? After my first tank of fuel next spring I will change out plugs, wires, cap and rotor. I want to figure out what plug I should be running and then find the best place to get everything online/dealer. Thanks in advance for any help!
Bowz
03 SSV 1180FWD, 750'S AFT, ACME1433, GETTO GATES FOR BOTH SIDES
05 CUMMINS EXTRA AIR AND EVEN MORE FUEL (MAIN TOW RIG)
08 FJ TRAIL TEAMS ED (10 MIN OR LESS TO THE RIVER TOW RIG)
01 JETTA TDI