Correct spark plugs for PCM Pro Boss 5.8
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=17312
Printed Date: November-18-2024 at 11:48am
Topic: Correct spark plugs for PCM Pro Boss 5.8
Posted By: jayc
Subject: Correct spark plugs for PCM Pro Boss 5.8
Date Posted: April-28-2010 at 11:36am
|
Friend has a 92 nautique with a PCM engine. Cover on the carb states pro boss 5.8 so I assume this is the 285HP engine with GT40 heads? It certianly has a lot more poke than my 2001.
If so should the correct plugs be NGK BPR6EFS? (I'm in the UK so NGK are easiest to obtain). I have some bpr6efs plugs and on comparing the autolite ones removed the NGK ones are slightly longer on the thread part. I think this is where the "E" in the bprefs comes from. So is it possible the previous owner had installed the standard output plugs (think these are NGK BPR6FS) and it's run ok with them? I'm concerned with use the longer plugs in case the piston bumps into them. I understand I can check for GT40 heads by looking at the number on ribs cast into the end? 3 ribs should be a GT40 so if so can I safely use the BPR6EFS plugs? Anyone care to confirm? ------------- 1982 Nautique 2001 - 351W Dual Fuel 1982 Ski Tique - 351W Dual fuel 1996 Maxum 210ss -350 EFI Dual Fuel |
Replies:
Posted By: Luchog
Date Posted: April-28-2010 at 12:04pm
|
I use the BPR6FS as Autolites are not obtainable here, I have compared them to a set of autolites once and noticed the Autolites were longer too.
What you could do is disconnect the lead for the coil, and crank the engine with the longer plugs, take them out and check. A deeper plug will take some volume out of the compression chamber and perhaps ignite better? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique Commander 351W |
Posted By: Dave D.
Date Posted: April-28-2010 at 12:26pm
|
Has anyone tried E3 spark plugs? www.e3sparkplugs.com
I have only heard good things about them and might have to try a set on my PCM 351. ------------- Dave D. http://www.correctcraftfan.com/diaries/details.asp?ID=5525&sort=&pagenum=4 - '89 Sport Nautique http://www.golaketravis.com/webcam/ - Lake Travis, Texas! |
Posted By: TRBenj
Date Posted: April-28-2010 at 12:46pm
|
Stick with Autolites if at all possible. The correct plug for the ProBoss (with GT40 heads) is 764. ------------- |
Posted By: jayc
Date Posted: April-29-2010 at 6:15am
|
Autolites are not available in this country. Generally its NGK or champion plugs.
Fitted the BPR6EFS and they are fine.  ------------- 1982 Nautique 2001 - 351W Dual Fuel 1982 Ski Tique - 351W Dual fuel 1996 Maxum 210ss -350 EFI Dual Fuel |
Posted By: horkn
Date Posted: April-29-2010 at 8:59pm
|
NGK's work great and are 100% direct swaps for autolites. ------------- 78 martinique- refloored, reinforced, stringers re glassed, re engineered interior GT40P heads Edelbrock Performer intake acme 4 blade http://img.photobucket.com/albums/v64/horkn/fish/nautique.jpg |
Posted By: 8122pbrainard
Date Posted: April-29-2010 at 9:43pm
Are the NGK's in the Martinique that won't rev past idle??!!  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
horkn wrote:Posted By: kapla
Date Posted: April-29-2010 at 9:58pm
|
I run NGK also in my engine, with gt40p heads..maybe also thats why I can;t make it past the 4500 rpm at wot ------------- <a href="">1992 ski nautique |
Posted By: Luchog
Date Posted: April-29-2010 at 10:33pm
|
Kapla checked yesterday at skidim, the Autolites 764 that I have work for your engine with the Gt40s and the protec ignition, Wanna trade them for the Tshirt? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique Commander 351W |
Posted By: Gary S
Date Posted: April-29-2010 at 10:41pm
 ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: horkn
Date Posted: April-30-2010 at 1:39am
|
LOL.
That's not the reason. Although I would have posted the same thing if I were you. ;) It's a SB ford, I have run NGK's in all my SBF vehicles with no issues. As a matter of fact, I put in new NGK's when I first bought the boat in 2000 and it ran great with them:) ------------- 78 martinique- refloored, reinforced, stringers re glassed, re engineered interior GT40P heads Edelbrock Performer intake acme 4 blade http://img.photobucket.com/albums/v64/horkn/fish/nautique.jpg |
Posted By: horkn
Date Posted: April-30-2010 at 1:42am
I would be shocked if that were the case. ------------- 78 martinique- refloored, reinforced, stringers re glassed, re engineered interior GT40P heads Edelbrock Performer intake acme 4 blade http://img.photobucket.com/albums/v64/horkn/fish/nautique.jpg |
Posted By: michiel200
Date Posted: April-30-2010 at 4:35am
I use the BPR6EFS in my 5.8 HO. Did WOT 5200 with stock prop, now 5000 with new Acme #328. NGK is the only brand thats easy to get here too. But often get bad press. ------------- '92 BFN |
Posted By: kapla
Date Posted: April-30-2010 at 1:36pm
|
Actually I was just kidding on the plugs things..LOL...
------------- <a href="">1992 ski nautique |
Posted By: kapla
Date Posted: April-30-2010 at 1:48pm
those are the ones I have in my engine also just confirmed with an old post I did... I`m possitive the reason I don´t see more rpm´s its ignition realted (protec) or the tach not giving accurate readings... ------------- <a href="">1992 ski nautique |