spark plugs
05-10-2010, 01:18 AM
#2
Charter Member # 55
Charter Member
You can run a Rapid Fire #1. It is the same heat range as an MR43T, but has a slightly extended tip and is a direct replacement for the R43TS. I'm not sure if the #10 is direct cross with the R43T.
In reality though, you will not gain a thing by running them over the stock MR43T. You could just run an auto motive R43T or R43TS.
In reality though, you will not gain a thing by running them over the stock MR43T. You could just run an auto motive R43T or R43TS.
05-10-2010, 02:16 AM
#3
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Join Date: May 2010
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Ive heard that spending the outrageous money on plus liks platinum, split fire etc is a waste and actually isnt good. I have the new camaro and the book says do not use anything but a regular copper top. I mean if you have some big custom engine than sure. But if you have the relative basic 454 502 stick with the stock
05-10-2010, 05:30 PM
#6
Gold Member
As far as I know, all Mercruisers today that are fuel injected, ship with platinum spark plugs.
http://www.mercurymarine.com/engines.../mpi8-2lho.php
All the way to the 8.2 Mag. I don't know about Mercury Racing, I assume they'd be specced that way or higher for plugs. I also noticed that the carb motors have a 45 gap, the plats are at 60.
http://www.mercurymarine.com/engines.../mpi8-2lho.php
All the way to the 8.2 Mag. I don't know about Mercury Racing, I assume they'd be specced that way or higher for plugs. I also noticed that the carb motors have a 45 gap, the plats are at 60.
