Offshoreonly.com - Search Results

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

Search Results

 
Search: Posts Made By: Trash
Showing results 1 to 25 of 500
Search took 0.10 seconds.
Forum: Prop Talk
03-30-2020, 11:16 AM
Replies: 21
Views: 680
Posted By Trash

I would start where you left off. Get solid data...

I would start where you left off. Get solid data with your old/existing props and the new motors. Yes I understand you 'may' be underpropped considering the HP upgrade, but at least you have a base...
03-30-2020, 12:36 AM
Replies: 126
Views: 38,484
Posted By Trash

Kurt, I would highly recommend getting at...

Kurt,

I would highly recommend getting at least one O2 sensor installed. Without it you are tuning (driving) blind. Depending on the exhaust you can install a sandwich plate between the...
Forum: General Q & A
03-10-2020, 01:22 PM
Replies: 8
Views: 728
Posted By Trash

Ditto. I've run without this but prefer having...

Ditto. I've run without this but prefer having it installed (as I do now). I have also done direct A - B comparison on AFRS with and without the unit installed. Zero difference.
Forum: General Q & A
03-05-2020, 02:34 PM
Replies: 26
Views: 1,014
Posted By Trash

Thanks for the clarification. You forced me to...

Thanks for the clarification. You forced me to dig out the old brochure. The verbiage in the paragraphs in the 1995 Mercury brochure would lead one to believe they were roller camshafts, but the...
Forum: General Q & A
03-04-2020, 03:51 PM
Replies: 26
Views: 1,014
Posted By Trash

To the best of my knowledge the Mag/EFI motors...

To the best of my knowledge the Mag/EFI motors were all hyd roller cams. I would need to dig out my literature, but I know the small block motors were. Don't over think the GenV and Gen VI stuff. ...
Forum: General Q & A
03-03-2020, 08:30 PM
Replies: 26
Views: 1,014
Posted By Trash

I will touch on a couple of points and reiterate...

I will touch on a couple of points and reiterate some others.

I would not raise the rev limiter. You would likely be exceeding max hp curve and not see any improvement in performance. Heads and...
Forum: General Q & A
03-03-2020, 03:10 PM
Replies: 26
Views: 1,014
Posted By Trash

It is an easy thing to reflash the MEFI 1 to a...

It is an easy thing to reflash the MEFI 1 to a 502 tune. You will spend $400 for AZSM to reflash the ecm or you can spend $600 and get the software and do it yourself. IT IS EASY! Plus you can...
Forum: General Q & A
03-03-2020, 03:05 PM
Replies: 26
Views: 1,014
Posted By Trash

The MEFI 1 will be fine. It is simple and...

The MEFI 1 will be fine. It is simple and robust. I have over 25 years of use on mine and 100's of tune installs. VST can be rigged with fuel return to tank and a new internal gasket kit if needed.
Forum: General Q & A
03-03-2020, 02:30 PM
Replies: 26
Views: 1,014
Posted By Trash

I don't believe any of the 454 or 502 black...

I don't believe any of the 454 or 502 black motors came with roller rockers. They would not affect the tune at all assuming the same ratio.
Forum: General Q & A
03-03-2020, 02:28 PM
Replies: 26
Views: 1,014
Posted By Trash

The motor does not care what version MEFI is...

The motor does not care what version MEFI is running it nor does the MEFI version care what motor it sits upon. The motor only wants to see correct fuel and spark. If you have a a MEFI 1 with a 454...
Forum: General Q & A
03-03-2020, 02:21 PM
Replies: 26
Views: 1,014
Posted By Trash

I am assuming you are using the 454 ecm and...

I am assuming you are using the 454 ecm and intend to use that on the 502s. Get the motors assembled, wired and plumbed and run them on a test stand (preferably) or in the boat utilizing the existing...
Forum: Prop Talk
02-19-2020, 06:49 PM
Replies: 1
Views: 133
Posted By Trash

You are near max rpm for the motor with the...

You are near max rpm for the motor with the existing props. Adding pitch will load the motor to a lower hp band. You will likely suffer on top end. If you were bouncing off the rev limiter or...
Forum: General Q & A
01-25-2020, 08:58 PM
Replies: 103
Views: 9,926
Posted By Trash

It could be a hairline crack some where in the...

It could be a hairline crack some where in the intake manifold 'hat' or the surrounding gasket. As the motor warms up the expansion can cause a larger air leak. Just a thought.
01-24-2020, 10:34 AM
Replies: 23
Views: 2,188
Posted By Trash

I would add that with some of the ramp rates and...

I would add that with some of the ramp rates and lift we see on hyd roller cams will cause the valves to seat fairly fast and hard. This hammering affect can be heard upstream through the induction...
Forum: General Q & A
01-24-2020, 10:29 AM
Replies: 74
Views: 7,697
Posted By Trash

Stay positive. I applaud your feed back on...

Stay positive. I applaud your feed back on suggestions all have made. Often without this feedback we as fellow members never learn anything either. In the end a synopsis will help us all. Good...
Forum: General Q & A
01-23-2020, 04:00 PM
Replies: 74
Views: 7,697
Posted By Trash

You have pictures showing drops of water down the...

You have pictures showing drops of water down the manifold side. Are there signs of water on the upstream side of the elbow/manifold collar area? If not the collar is the suspect. If there is, I...
Forum: General Q & A
01-20-2020, 01:06 PM
Replies: 16
Views: 980
Posted By Trash

Yes there is a limit to cam choice when utilizing...

Yes there is a limit to cam choice when utilizing stock manifolds. I'm not going to say there is a hard cutoff for duration and overlap as every combination is a little different. With a big block...
01-12-2020, 09:47 PM
Replies: 23
Views: 2,188
Posted By Trash

I heard nothing too crazy to be concerned with...

I heard nothing too crazy to be concerned with from that short clip. I think one of the internal exhaust flappers may be nosier than the other but I'm not losing sleep over it. You will find out a...
Forum: General Q & A
01-12-2020, 03:38 PM
Replies: 4
Views: 400
Posted By Trash

Before you go into modifying the system check the...

Before you go into modifying the system check the VST itself. There is a diaphragm inside the top cover of the VST that will deteriorate over time and create a situation that APPEARS to be vapor...
Forum: General Q & A
01-07-2020, 02:51 AM
Replies: 21
Views: 1,541
Posted By Trash

You must have the O2 for tuning. Once done you...

You must have the O2 for tuning. Once done you can generally operate without.....BUT...I highly recommend keeping them active as is a great feedback tool on engine health. Key is having a well...
Forum: Prop Talk
12-05-2019, 10:53 PM
Replies: 21
Views: 2,070
Posted By Trash

Do not cut the ring. Try the prop as is. Then...

Do not cut the ring. Try the prop as is. Then make adjustments, if needed.
Forum: General Q & A
11-24-2019, 06:58 PM
Replies: 4
Views: 418
Posted By Trash

Are you talking JUST a tune, and not adding the...

Are you talking JUST a tune, and not adding the whipple?

IF just a tune it is not worth it in my estimation. No modification of any of the tables will yield significant nor seat of the pants...
Forum: Prop Talk
11-21-2019, 11:38 PM
Replies: 21
Views: 2,070
Posted By Trash

Before you start changing rev limiters and...

Before you start changing rev limiters and cutting more diffuser rings I'd do more testing.

I'm surprised you pulled to the rev limiter with the Rev 4 25" prop. It has significantly more blade...
Forum: General Q & A
11-16-2019, 09:08 PM
Replies: 28
Views: 1,806
Posted By Trash

No it doesn't mean both have a vacuum leak. The...

No it doesn't mean both have a vacuum leak. The high idle motor likely does or the throttle blades/linkage are not working correctly. Fix this engine/problem first, THEN we can address the other...
Forum: General Q & A
11-15-2019, 11:57 AM
Replies: 28
Views: 1,806
Posted By Trash

THIS THIS THIS!! It is a simple fix and not a...

THIS THIS THIS!! It is a simple fix and not a tune issue (assuming it worked previously).

Start with the simple stuff as SB first mentioned. Is the throttle linkage allowing the throttle body...
Showing results 1 to 25 of 500
 


 
Forum Jump

OSO Sponsor
OSO Advertiser
OSO Advertiser
OSO Advertiser
OSO Advertiser
OSO Advertiser

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

OSO Advertiser