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Forum: Ignition System

09-19-2021, 12:16 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

I'm proud to say after an entire season including...

I'm proud to say after an entire season including a two week cruise that the system ran without a single glitch. So much so I pretty much forgot about it and moved onto other things.
The only...

Forum: General Interest

01-04-2021, 05:05 PM

Replies: 19

Where do you guys have your engine instruments?

Views: 2,294

Posted By cowlum

If my boat were fresh I’d just send ordinary data...

If my boat were fresh I’d just send ordinary data such as rpm/temp to wifi (nmea probably) and display it on the tablet. Audio alarm for anything critica amd probable shutdown. This would eliminate...

Forum: Ignition System

01-02-2021, 06:09 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

Engine bay as it stands now. Not entirely...

Engine bay as it stands now.

Not entirely satisfied with my wiring efforts but that'll have to do for a while.

.

Forum: Ignition System

01-02-2021, 06:07 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

Put some time into boxing and wiring the thing...

Put some time into boxing and wiring the thing more permanently into the engine bay.
I used PCB boards as the covers and crank components because they are cheap, cut my machine and quite tough.
...

Forum: Ignition System

12-15-2020, 10:00 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

Mounted the coil pack where I had originally...

Mounted the coil pack where I had originally imagined it would go. Leads seem to be the perfect length.
Wiring is still messy.

Forum: Ignition System

12-04-2020, 12:34 AM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

I was starting work on making a the crank pickup...

I was starting work on making a the crank pickup more permanent than the "made of things I found in around the house" setup I'm currently using. When taking measurements I noticed that one of the...

Forum: Ignition System

11-29-2020, 11:01 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

Thats exactly right! I've soldered a Wemos D1...

Thats exactly right! I've soldered a Wemos D1 Mini ESP32 to a pcb board of my own design. In future I'd like to surface mount just the esp32 to a board of surface mount components but I've little...

Forum: Ignition System

11-29-2020, 10:52 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

It basically has two coils. One each for the two...

It basically has two coils. One each for the two banks of cylinders. Banks are one and four, two and three. When a cylinder is on the compression stroke its fired as well as the sister cylinder on...

Forum: Ignition System

11-29-2020, 10:41 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

haha, thanks. I dazzled me. The rev limiter...

haha, thanks. I dazzled me.

The rev limiter is quite basic at the moment it simply doesn't instruct the coil to fire if the RPM goes over a set RPM. I've chosen 2800 as its higher than the engine...

Forum: Ignition System

11-28-2020, 07:59 PM

Replies: 16

Wasted Spark

Views: 4,475

Posted By cowlum

Wasted Spark

Hi

Thought my pet project may be interesting to some of the people on this forum.

About 3 months ago I started coding a wasted spark ECU mostly to improve my coding skills. I was quite happy...

Forum: General Maintenance

10-31-2020, 09:24 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

Hi again Today was sunny and we ended up...

Hi again

Today was sunny and we ended up going on a last minute cruise. I ran the engine for an hour, all running perfectly. My partner allowed me 20 minutes after to play with the engine while...

Forum: General Maintenance

10-30-2020, 04:00 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

Thanks guys First things first. I will...

Thanks guys

First things first. I will preform the pressure test when I get parts and my newborn allows the time, im not using the boat now anyway :). Its result will decide what happens next and...

Forum: General Maintenance

10-29-2020, 10:17 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

Fresh water cooled. No obvious coolant loss. ...

Fresh water cooled. No obvious coolant loss.
I'm not ruling out the idea its water, im just confused as to why it wont turn to steam. I guess my assumption was oils harder to burn than water is to...

Forum: General Maintenance

10-29-2020, 09:51 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

It does look like that but after 15 minutes of...

It does look like that but after 15 minutes of running in gear, too hot to touch it looks exactly the same. Water in the exhaust is steaming the usual amount.

Forum: General Maintenance

10-29-2020, 09:50 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

That’s a good idea, I’ll do that but ultimately...

That’s a good idea, I’ll do that but ultimately aim for a pressure test.

Forum: General Maintenance

10-28-2020, 11:54 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

I just cant seem to change the amount of fluid...

I just cant seem to change the amount of fluid sitting on top of the piston. If I heat the engine up fully, then remove the spark plug it doesn't boil or evaporate despite the heat. Leads me to...

Forum: General Maintenance

10-27-2020, 11:16 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

I ran the engine for 15 minutes, in gear attached...

I ran the engine for 15 minutes, in gear attached to the doc at 1400 rpm.
The fluid remained in the cylinder. I checked the other cylinders and they too had liquid, though less of it.
Is it...

Forum: General Maintenance

10-27-2020, 06:14 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

I have a raw water strainer that I unscrew...

I have a raw water strainer that I unscrew breaking suction to the pump, I then wait for the last big gush of water out the exhaust before shutting the engine down. Usually takes about 30 seconds....

Forum: General Maintenance

10-27-2020, 12:36 PM

Replies: 27

Piston anomoly

Views: 5,097

Posted By cowlum

Piston anomoly

Hi

The attached jpg is a periscope photo taken of my number 4 piston after the engine has been sitting for a day.

Questions:
1: What is the screw head like thing in the center?
2: Do the...

Forum: General Maintenance

08-20-2020, 11:47 AM

Replies: 2

Slack in Gear Box

Views: 937

Posted By cowlum

Thanks for the reply. Thats my assumption too....

Thanks for the reply.
Thats my assumption too. Im not too worried but figured I'd ask while im in there.

Forum: General Maintenance

08-19-2020, 11:03 PM

Replies: 2

Slack in Gear Box

Views: 937

Posted By cowlum

Slack in Gear Box

Hi Guys

I've removed my engine from the engine compartment in order to give it a new paint job among other things. While I've had the engine out I've been giving it the once over and noticed a...

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