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 240
Search took 0.01 seconds.
Forum: New Products and Member Discounts
09-19-2025, 05:46 AM
Replies: 29
Views: 20,751
Posted By MadMat

I’d still be up for a new pair of thunder n...

I’d still be up for a new pair of thunder n lightnings if there was another production run
Forum: General Q & A
08-16-2025, 09:33 AM
Replies: 22
Views: 10,419
Posted By MadMat

I'd certainly jump at the opportunity for a new...

I'd certainly jump at the opportunity for a new pair of thunder & lightning exhausts. Nothing beats them! I've been keeping an eye on this thread for the last few years : Thunder-N-Lightning Cast...
Forum: Classic Offshore
06-10-2025, 09:28 AM
Replies: 5
Views: 646
Posted By MadMat

"It's got your name on it" "Nope, wasn't us" ...

"It's got your name on it"
"Nope, wasn't us"

Anyway, I have the clamp on versions of those I think. There's a few pics of the actuator on my page here if you scroll down : Arrow 830 – 2023...
Forum: New Products and Member Discounts
05-18-2025, 10:07 AM
Replies: 29
Views: 20,751
Posted By MadMat

Just thought I'd follow up on this thread - with...

Just thought I'd follow up on this thread - with the new administration wanting to bring jobs back onshore - could there be light at the end of the tunnel for some manifolds?
Forum: General Q & A
07-09-2024, 04:27 PM
Replies: 11
Views: 1,246
Posted By MadMat

After the raw water pump, before the oil cooler....

After the raw water pump, before the oil cooler. Idle is about 5psi, cruising is 30psi, WOT is off the end.
Forum: General Q & A
07-09-2024, 04:00 PM
Replies: 11
Views: 1,246
Posted By MadMat

yes, 30psi. Goes way past 30psi though, almost...

yes, 30psi. Goes way past 30psi though, almost all the way round
Forum: General Q & A
07-09-2024, 07:14 AM
Replies: 11
Views: 1,246
Posted By MadMat

It's a mechanical gauge. No evidence to suggest...

It's a mechanical gauge. No evidence to suggest it's way off and they are super simple mechanically. Do they frequently over read? I'll have a hunt round to see if I have a spare.
Forum: General Q & A
07-09-2024, 06:26 AM
Replies: 11
Views: 1,246
Posted By MadMat

3/4" Water Dump

I'm running a Bravo XR with sportsmaster lower, closed cooling on the engine, raw water exhausts.
Struggling with excessively high raw water pressure - it pegs the gauge.
Have put extra exhaust...
Forum: General Q & A
06-08-2024, 03:19 AM
Replies: 3
Views: 640
Posted By MadMat

I had an '89 292 SR1. Exhausts on it were...

I had an '89 292 SR1. Exhausts on it were standard mercruiser bravo fitment, nothing special.
I really enjoyed that boat - had a lot of fun with it.
Forum: New Products and Member Discounts
05-14-2024, 02:12 AM
Replies: 29
Views: 20,751
Posted By MadMat

Just wanted to see if there's been any progress...

Just wanted to see if there's been any progress on making some more sets of these....
Forum: New Products and Member Discounts
10-03-2023, 02:46 AM
Replies: 29
Views: 20,751
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: 10,516
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: 2,534
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: 29
Views: 20,751
Posted By MadMat

Thank you. :)

Thank you. :)
Forum: New Products and Member Discounts
08-18-2023, 06:39 AM
Replies: 29
Views: 20,751
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: 772
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: 772
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: 772
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: 7,389
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: 10,516
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: 10,516
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: 10,516
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: 10,516
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: 10,516
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: 10,516
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...
Showing results 1 to 25 of 240
 
Page 1 of 10
1
2
3
Last »


 
Forum Jump

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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.