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Search: Posts Made By: dogturd21
Showing results 1 to 25 of 207
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Forum: General Q & A
11-09-2025, 10:49 PM
Replies: 8
Views: 783
Posted By dogturd21

Mercruiser 502 380 hp vs 502 430 hp difference ?"

I am looking at a few boats that have dual 502 engines. Most have been 2017-18 model years, but a 2019 caught my eye and I find that Merc increased the hp from previous years. 2019 and up are...
Forum: Do It Yourself, Boating on a Budget
10-15-2021, 12:34 AM
Replies: 3
Views: 824
Posted By dogturd21

Thread moved to here- ...

Thread moved to here- https://www.offshoreonly.com/forums/general-q/373615-7-4-mpi-mefi-3-odd-timing-problem.html
Forum: Do It Yourself, Boating on a Budget
10-15-2021, 12:34 AM
Replies: 3
Views: 824
Posted By dogturd21

Thanks for the info- I moved the thread to the...

Thanks for the info- I moved the thread to the Technical section. I am 2nd owner of this 2000 with L29 454 in 2006, and the ECM has never been touched while I have owned it. Possibly it could have...
Forum: General Q & A
10-15-2021, 12:20 AM
Replies: 23
Views: 9,129
Posted By dogturd21

My marina only has 89 octane. I will look up...

My marina only has 89 octane. I will look up ways to test the knock sensor. I was considering getting my MEFI 3 reflashed to try to wring another 10 hp out of it, or perhaps if a MEFI 4 was...
Forum: General Q & A
10-14-2021, 12:00 AM
Replies: 23
Views: 9,129
Posted By dogturd21

So far I have not seen any engine codes, but I...

So far I have not seen any engine codes, but I will check again. Does this match your understanding of MEFI code 44 ?
" code 44 - cannot detect knock activity " .
Forum: General Q & A
10-10-2021, 09:36 PM
Replies: 23
Views: 9,129
Posted By dogturd21

The problem is that the ECU is only commanding...

The problem is that the ECU is only commanding 17. The ECU is stock, not been reflashed.
Forum: General Q & A
10-10-2021, 01:16 AM
Replies: 23
Views: 9,129
Posted By dogturd21

7.4 MPI, MEFI 3 odd timing problem

On my 7.4 454 MPI with MEFI 3 , I hooked up a Fox Marine gateway and discovered an odd timing issue. At WOT above 3000 rpm, I seem to read only 17 degrees of timing advance. The total timing should...
Forum: Do It Yourself, Boating on a Budget
10-10-2021, 01:12 AM
Replies: 3
Views: 824
Posted By dogturd21

7.4 MPI, MEFI 3 odd timing problem

On my 7.4 454 MPI with MEFI 3 , I hooked up a Fox Marine gateway and discovered an odd timing issue. At WOT above 3000 rpm, I seem to read only 17 degrees of timing advance. The total timing should...
Forum: General Q & A
04-09-2013, 12:37 AM
Replies: 10
Views: 1,385
Posted By dogturd21

The Shurhold buffer is really good as well, and...

The Shurhold buffer is really good as well, and comes with some accessories specifically for boats. I imagine its really made by somebody else- it sort of looks like a Milwaukee product- very well...
Forum: General Q & A
04-08-2013, 10:59 AM
Replies: 4
Views: 11,148
Posted By dogturd21

FIXX- that is exactly the tips I was looking for...

FIXX- that is exactly the tips I was looking for :) so the new lines can be pushed through from the trim manifold (or pulled through using a fish, or a wire / string). Right now my problem is that...
Forum: Do It Yourself, Boating on a Budget
04-08-2013, 12:56 AM
Replies: 30
Views: 8,734
Posted By dogturd21

I would not put this oil on the same level as a...

I would not put this oil on the same level as a true PAO group 3 synthetic- its probably a group 4 "synthetic" by law only. I would just treat it as a slightly better than average dino oil.
Forum: General Q & A
04-08-2013, 12:49 AM
Replies: 4
Views: 11,148
Posted By dogturd21

The thing is- can that manifold even cause a oil...

The thing is- can that manifold even cause a oil leak into the bilge ?
Forum: General Q & A
04-07-2013, 09:14 PM
Replies: 12
Views: 2,327
Posted By dogturd21

I had a similar problem that turned out to be a...

I had a similar problem that turned out to be a combination of bad coil to distributer wire, and plug wires cross-firing. Make sure the plastic plug wire separators are in place. before you tear...
Forum: General Q & A
04-07-2013, 09:08 PM
Replies: 4
Views: 11,148
Posted By dogturd21

trim pump major leak into bilge

Well, its not my Velocity giving me problems this time- rather the Sea Ray :( Bravo 3 outdrive, 454 7.4, year 2000. I was pulling the boat out of storage today and tried to trim the drive up, and it...
Forum: General Q & A
03-15-2013, 11:09 PM
Replies: 42
Views: 39,213
Posted By dogturd21

The Amsoil Marine gear lube is a great value for...

The Amsoil Marine gear lube is a great value for a full synthetic.
Forum: General Q & A
03-13-2013, 10:33 PM
Replies: 42
Views: 39,213
Posted By dogturd21

On the original 454-330 hp in my Velocity, I went...

On the original 454-330 hp in my Velocity, I went 1600 hours on the first engine. First 150 hours were Mobil 1 15w50, last 1450 hours was with Amsoil 20w50. Engine was still running very strong at...
Forum: General Q & A
03-13-2013, 10:23 PM
Replies: 6
Views: 1,076
Posted By dogturd21

I liked dealing with Snapincarpet- good people. ...

I liked dealing with Snapincarpet- good people. Also check ebay item- 320694560463
Forum: General Q & A
03-12-2013, 09:34 PM
Replies: 42
Views: 39,213
Posted By dogturd21

+1 although the Amsoil 20w50 is also good. I...

+1 although the Amsoil 20w50 is also good. I have spoken to the Royal Purple tech support people (and the Amsoil tech support) many times, so I would not veto Royal Purple either. What you want...
Forum: General Q & A
03-12-2013, 09:28 PM
Replies: 14
Views: 4,885
Posted By dogturd21

My preference is the Amsoil filters, but I also...

My preference is the Amsoil filters, but I also use Purolator Pure 1. that's pretty much all I use on my boats. For cars and trucks I also like the Wix, Mobil 1. Like some of the oil filter...
Forum: General Q & A
03-12-2013, 01:04 AM
Replies: 20
Views: 3,623
Posted By dogturd21

Purolator changed from the nice metallic blue to...

Purolator changed from the nice metallic blue to the yellow. I like the Amsoil filters as they have a nice black paint job.
Forum: General Q & A
03-12-2013, 01:02 AM
Replies: 13
Views: 7,882
Posted By dogturd21

I am near Annapolis. I am sure i have both a...

I am near Annapolis. I am sure i have both a puller and installer, I just have to find them....
Forum: General Q & A
03-12-2013, 12:54 AM
Replies: 14
Views: 4,885
Posted By dogturd21

Incorrect: the anti-drainback valve is designed...

Incorrect: the anti-drainback valve is designed to prevent "unfiltered" oil from draining back into the crankcase, possibly taking even more dirt off the filter. Most good filters will have two...
Forum: General Q & A
03-10-2013, 10:48 PM
Replies: 50
Views: 8,514
Posted By dogturd21

I think its a marine-certified stuff that looks a...

I think its a marine-certified stuff that looks a bit like romex. Check a West Marine catalog-they have a good electrical section.
Forum: General Q & A
03-10-2013, 10:47 PM
Replies: 14
Views: 4,885
Posted By dogturd21

I use the Amsoil EA024 filter - it def has good...

I use the Amsoil EA024 filter - it def has good anti-drainback valve. Keep in mind that the anti drainback valve is designed to prevent unfiltered oil from draining back into the crankcase. With...
Forum: General Q & A
03-10-2013, 10:41 PM
Replies: 24
Views: 5,771
Posted By dogturd21

You can find the book "rebuilding the Gen V/VI...

You can find the book "rebuilding the Gen V/VI Big Block" on Amazon for Kindle- much cheaper than the hard copy version which is hard to find.

Search for ISBN B0027G6WY8 by Mike Mavrigan - has...
Showing results 1 to 25 of 207
 
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