1976 SN: 351 Firing Order
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=4789
Printed Date: November-27-2024 at 2:23pm
Topic: 1976 SN: 351 Firing Order
Posted By: Hydrofoilmaniac
Subject: 1976 SN: 351 Firing Order
Date Posted: September-17-2006 at 9:32am
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I have a 351 in my 76 SN. What is the firing order? I think it's 1-8-4-5-6-2-7-3 (clockwise).
Also, on a ford, is the #1 cylinder the front starboard cylinder(driver side)? Thanks for the help ------------- |
Replies:
Posted By: 79nautique
Date Posted: September-17-2006 at 10:12am
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if it's a clockwise motor then someone as reversed the rotation of the engine or replaced it with a conventional motor. Look in the reference section in the PCM manual and it will list all of the engine specs. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: joed
Date Posted: September-17-2006 at 10:17am
| According to my manual and knowledge you are correct on both. The cylinders are numbered 1 thru 4 on the starboard side (front to back) and 5 thru 8 on the port side (front to back). a$$uming "front" is closest to the driver's seat going "back" towards the stern. Hope that helps. |
Posted By: 79nautique
Date Posted: September-17-2006 at 10:25am
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that is the firing order for a RH rotation engine and not a LH rotation engine like he asked for that would be 1-5-4-2-6-3-7-8 ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Hydrofoilmaniac
Date Posted: September-17-2006 at 11:29am
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My bust. What I should have said was, 8-4-5-6-2-7-3-1 (COUNTERCLOCKWISE).
Yep, this all started with trying to get my carb dialed in after rebuilding it. I found my distributer loose in the process. I was on a bit of wild goose chase yesterday since my friend told me that the #1 was on the port....and the port side cylinders were 1,3,5,7. A small detail.....:) If the 8-4-5-6-2-7-3-1 (COUNTERCLOCKWISE) firing is correct, how do you set the timing? That is, what RPM's should I be at. I have it set to about 800 now but I still need to set the air/fuel mixture (just rebuilt my carb). I'm running at about 9 degrees right now. 6 degrees in seemed bogged down. At 12 it didn't start good warm. Any thoughts? Thanks for the help and the tips! ------------- |
Posted By: 79nautique
Date Posted: September-17-2006 at 12:09pm
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the order starts with 1 not 8 look at the repair manual in the reference section it's pretty clear on what the specs should be. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Hydrofoilmaniac
Date Posted: September-17-2006 at 1:09pm
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Ok. I changed my notes.
I don't have a repair manual for this engine. Can you get these thru CC? Thanks ------------- |
Posted By: captan1
Date Posted: September-17-2006 at 2:20pm
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In the reference section there are engine manuals to download, same thing you would buy. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=452&sort=&pagenum=1&yrstart=1978&yrend=1978 - 1978 Ski Nautique |
Posted By: Tim D
Date Posted: September-17-2006 at 6:04pm
RH firing order 1-8-4-5-6-2-7-3. If you have a stock intake, you should be able to see the cylinder numbers embossed on it. Here's a rotation diagram, people get it backwards by looking at the pulleys from the front.
 ------------- Tim D |
Posted By: Hydrofoilmaniac
Date Posted: September-19-2006 at 10:40pm
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thanks ------------- |
Posted By: Munday
Date Posted: September-29-2006 at 3:00pm
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Also, if the came has been changed could be 302 firing order.Just a thought
Munday |