19' Thompson with i/o Ford 302- need help with the 302

[TacomaTom]

I bought this boat from a freind for $250, supposedly it only need minor repair. Im trying to get the engine started and want to start with the basics so i have some questions that im hopeing you guys can answer.

BTW i do not know any specific info on the thing yet like model or year sorry have not gotten the paperwork yet.

1. What is the firing order?
2. Do you need a special coil or just any automotive coil, i have an accell coil on it now but somebody said i need a marine coil?
3. Is there any good websites that offer good info on marine engine or specificly this one? And specificly the electrical stuff that i NEED to start the engine.
4.Any other info that a newbie might need to know about this boat?

PS if i did it right i also included 3 pictures that i took with my phone. Maybe you guys can tell me some info using them?

Thanks in advance for any info you might have.

 

[cooter2506]

Re: 19' Thompson with i/o Ford 302- need help with the 302

If it turns over do a compression test to see if it is up to snuff. Looks like the intake manifold is rusted also, maybe uncovered outside for a while. If so maybe got some water down carb throat. Outdrive looks like a OMC Stringer. If I remember right Ford exhaust parts are hard to come by. Anything electrical for the engine should be Coast Guard approved. As far as a site you are on it this is an amazing forum for your questios you will not be led astray. GL to you and Welcome to Iboats!!!!

 

[TacomaTom]

Re: 19' Thompson with i/o Ford 302- need help with the 302

The distributer in the engine is a mallory 3755101 H, is this the right distributer for this engine, even though i know it is not a "marine" dist.

 

[zbnutcase]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Firing order depends on HP rating. MOST marine 302s have a 1-3-7-2-6-5-4-8 order, although the 175hp OMC had 1-5-4-2-6-3-7-8 order. Since all coils are sealed, no difference whether marine or auto, what does matter is if you need external resisted type or internal resisted.

 

[TacomaTom]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Is there any way to know for SURE, which firing order to use? I have tried both but no start yet. If i knew for sure which one it was i could set that and move on.

 

[Blk-n-Blu]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Tom, You can download the manual for your drive set-up from the Adults Only section at the top of this forum page for free. If the boat has been sitting awhile you might want to use a fresh source of fuel to get her going.Does it have a safety lanyard at the helm or controls that needs to be plugged in? Good luck. Welcome to IBoats

 

[BRG25]

Re: 19' Thompson with i/o Ford 302- need help with the 302

You need fuel, spark and compression. Which one(s) are you missing?

I LOVE these OMC threads...where's my popcorn???

Don...shine up the crystal ball!

 

[frank246]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Is there any way to know for SURE, which firing order to use? I have tried both but no start yet. If i knew for sure which one it was i could set that and move on.

Get the valve covers off, turn the engine untill piston # 1 is in compression stroke @TDC, turn the engine by hand (ratch) and follow the first next step in valve closing sequence (cylinder # 3 or # 5 have their valves both closed) If cylinder 3 is next than you have a 351 cam and corresponding firing order (see above post) When #5 then you have the 302 cam.
Good luck!

 

[Juniinc]

Re: 19' Thompson with i/o Ford 302- need help with the 302

It should be 1-5-4-2-6-3-7-8

 

[bomar76]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Remember Fords number their cylinders differently than GM:

Firewall
4 8
3 7
2 6
1 5
Front bumper


This has screwed up many a person before.

 

[TacomaTom]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Remember Fords number their cylinders differently than GM:

Firewall
4 8
3 7
2 6
1 5
Front bumper


This has screwed up many a person before.

Well you can add me to that list

But the engine still did not start although it seemed to want to. I am wondering if maybe they got the #1 spark plug wrong. I am gonna make sure which one is the number one on the next nice day and then redo the firing order again. Its easy when your replace a dist. to get the number one wrong if your not careful.

 

[billy4hp]

Re: 19' Thompson with i/o Ford 302- need help with the 302

Well you can add me to that list

But the engine still did not start although it seemed to want to. I am wondering if maybe they got the #1 spark plug wrong. I am gonna make sure which one is the number one on the next nice day and then redo the firing order again. Its easy when your replace a dist. to get the number one wrong if your not careful.

Also remember a small block Ford rotor turns counter clockwise compared to a small block Chevrolet that turns clockwise...

http://www.boxwrench.net/specs/ford_289_302-5.0.htm