Offshoreonly.com - Search Results
Offshoreonly.com

Go Back  Offshoreonly.com > Search Forums
Reload this Page >

Search Results

Register
FAQ
Calendar
Today's Posts
Search
Vendor Directory
Notices
 
Page 1 of 10
1
2
3
Last »
Search: Posts Made By: MadMat
Showing results 1 to 25 of 230
Search took 0.05 seconds.
Forum: New Products and Member Discounts
10-03-2023, 02:46 AM
Replies: 19
Views: 10,226
Posted By MadMat

Just to add, if this looks like it might be...

Just to add, if this looks like it might be impossible to make happen, or is uneconomic to do - they are, still, the best headers exhausts - I'd be interested in exploring some alternative options...
Forum: General Q & A
08-21-2023, 12:42 PM
Replies: 49
Views: 5,682
Posted By MadMat

Just an update. I was running the boat last...

Just an update. I was running the boat last weekend and I put a pair of flaps on. They stayed on just fine. No noticeable impact to noise, which is expected, and while it was a fairly short run, they...
Forum: General Q & A
08-20-2023, 09:24 AM
Replies: 8
Views: 646
Posted By MadMat

The is a vastly under appreciated point, good...

The is a vastly under appreciated point, good shout.
Forum: New Products and Member Discounts
08-19-2023, 12:06 PM
Replies: 19
Views: 10,226
Posted By MadMat

Thank you. :)

Thank you. :)
Forum: New Products and Member Discounts
08-18-2023, 06:39 AM
Replies: 19
Views: 10,226
Posted By MadMat

Does anyone have any visibility of a new set of...

Does anyone have any visibility of a new set of these exhausts from Diamond? Mailed them a few weeks back for an update and didn't get a reply.
Thanks
Matt
Forum: General Q & A
08-14-2023, 11:33 AM
Replies: 4
Views: 363
Posted By MadMat

Yes, I can - I can put in whatever I need to so...

Yes, I can - I can put in whatever I need to so that the interpolation between the points is accurate. But with the very simple map I started with, this was adequate.
Forum: General Q & A
08-14-2023, 07:40 AM
Replies: 4
Views: 363
Posted By MadMat

Good point. I was still thinking "auto"...

Good point. I was still thinking "auto" cruising.
Forum: General Q & A
08-14-2023, 05:44 AM
Replies: 4
Views: 363
Posted By MadMat

EFI Timing

I'm planning to do some work on my EFI system map next weekend and I'd welcome any feedback based on others experience:

Engine & Cam Spec is as follows:...
Forum: General Q & A
08-12-2023, 04:25 AM
Replies: 43
Views: 4,113
Posted By MadMat

If you mean 8x ITBs like a hilborn (which is what...

If you mean 8x ITBs like a hilborn (which is what I have), then no, don’t do that. It’s lovely, but a fair bit of setup to get just right and give no vacuum signal which makes the efi system a bit...
Forum: General Q & A
08-11-2023, 04:50 PM
Replies: 49
Views: 5,682
Posted By MadMat

Agreed. I think we're talking at odds. My closed...

Agreed. I think we're talking at odds. My closed cooling setup is full flow, so even when that stat is completely closed, the block gets a full flow of coolant circulating, it's just not going...
Forum: General Q & A
08-08-2023, 03:39 PM
Replies: 49
Views: 5,682
Posted By MadMat

For our type of high performance stuff, you’re...

For our type of high performance stuff, you’re right. These days I think you can get the prop maybe 80-90% right straight out of the starting blocks, but that last 10-20% is very personal and unique,...
Forum: General Q & A
08-08-2023, 01:51 PM
Replies: 49
Views: 5,682
Posted By MadMat

So far, I’ve seen 79.5mph at 5450 (roughly) on a...

So far, I’ve seen 79.5mph at 5450 (roughly) on a stock Bravo 1, 26” pitch.

Focus at the moment is to get everything working well and reliably, map needs leaning out, ignition needs a bit more...
Forum: General Q & A
08-08-2023, 01:44 PM
Replies: 49
Views: 5,682
Posted By MadMat

Yeah, it surprised me, for sure. I run a full...

Yeah, it surprised me, for sure. I run a full flow closed cooling setup, which is great. I have full coolant flow through the engine at all times, and the thermostat just redirects it through the...
Forum: General Q & A
08-08-2023, 11:49 AM
Replies: 49
Views: 5,682
Posted By MadMat

I looked up the full specs of the cam I'm...

I looked up the full specs of the cam I'm running:
https://mattyorke.files.wordpress.com/2023/08/cam-specs.jpg?w=500
And did a post with more details of the engine here...
Forum: General Q & A
08-08-2023, 02:12 AM
Replies: 49
Views: 5,682
Posted By MadMat

I can’t remember the cam right now (am away from...

I can’t remember the cam right now (am away from home). But the whole motor is a custom build, originally starting with a bulldog 540 (tall deck). It has a hydraulic roller cam, too.

The design...
Forum: General Q & A
08-07-2023, 11:07 AM
Replies: 49
Views: 5,682
Posted By MadMat

Thanks. It's a Hilborn mechanical injection...

Thanks. It's a Hilborn mechanical injection manifold that I converted to EFI. More details here (https://mattyorke.com/2023/08/07/converting-a-hilbon-mechanical-fuel-injection-to-efi/).
Forum: General Q & A
08-04-2023, 10:06 AM
Replies: 49
Views: 5,682
Posted By MadMat

It's a single engine rig with aluminium headers &...

It's a single engine rig with aluminium headers & heads, so not too heavy at the stern, although by design I have made my exhausts come out in the standard bravo locations rather than up higher.
...
Forum: General Q & A
08-04-2023, 09:46 AM
Replies: 14
Views: 1,112
Posted By MadMat

This is a good point that everyone should take...

This is a good point that everyone should take note of too. The merc housings have quite a sharp moulding lip on them that internally that it's worth carefully sanding flush.
Forum: General Q & A
08-03-2023, 03:18 PM
Replies: 14
Views: 1,112
Posted By MadMat

Yes. Many of the cheap copies are not fit for...

Yes. Many of the cheap copies are not fit for purpose and some won’t even survive the first start. Genuine merc for me.
Forum: General Q & A
08-03-2023, 01:09 PM
Replies: 18
Views: 1,155
Posted By MadMat

Yeah, I'm generally OK with carbs, although not...

Yeah, I'm generally OK with carbs, although not up to date with the latest generation.

I agree that if he bought a pre-built one, then the supplier should have supported him. Both of mine have...
Forum: General Q & A
08-03-2023, 04:37 AM
Replies: 18
Views: 1,155
Posted By MadMat

Yeah. the tennis balls are just so that when I...

Yeah. the tennis balls are just so that when I don't have the proper cover over the horns (which is a bit bigger), if I'm doing some work on it, the last thing I want to hear is the tinkle of a screw...
Forum: General Q & A
08-03-2023, 02:35 AM
Replies: 18
Views: 1,155
Posted By MadMat

Yes, megasquirt. For some reason I wanted a...

Yes, megasquirt. For some reason I wanted a really custom setup converting an old school hilborn mechanical injection to EFI with all the electrronics as hidden as possible (see 3rd photos -...
Forum: General Q & A
08-02-2023, 01:21 PM
Replies: 18
Views: 1,155
Posted By MadMat

No, I mean on fuel injection engines, the ECU...

No, I mean on fuel injection engines, the ECU controls the high pressure pump and only turns the high pressure pump on when the engine is running, or cranking.

Many ECUs (can't comment on the merc...
Forum: General Q & A
08-02-2023, 11:19 AM
Replies: 18
Views: 1,155
Posted By MadMat

You're both correct. You don't want to pre-heat...

You're both correct. You don't want to pre-heat the sensor and then hit it with cold. So they are usually wired in to the fuel pump circuit so they are only on when the engine is running, not just...
Forum: General Q & A
08-02-2023, 01:48 AM
Replies: 49
Views: 5,682
Posted By MadMat

They are the actuators for the butterfly valves...

They are the actuators for the butterfly valves in the mufflers - which have a pushrod that goes through the transom rings, red bits below:
...
Showing results 1 to 25 of 230
 
Page 1 of 10
1
2
3
Last »


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.