Gas Engines/Transmissions

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New Users - Please Read

Last post by CYO Admin « February 6th, 2013, 7:49 am
Posted in Introduce Yourself!

by CYO Admin » February 6th, 2013, 7:49 am » in Introduce Yourself!

CYO is a family friendly, spam free forum. Any posts deemed inappropriate, containing personal attacks and/or bashing/slamming a person or company...

0 Replies

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Last post by CYO Admin View the latest post
February 6th, 2013, 7:49 am
Welcome to CarverYachtOwners.com!

Last post by Viper « November 11th, 2025, 5:34 pm
Posted in Introduce Yourself!
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by CYO Admin » January 30th, 2013, 9:07 am » in Introduce Yourself!

Welcome to CarverYachtOwners.com!

It's always confused me as to why no one ever started a carver specific message board, so here it is.

I hope you...
357 Replies

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Last post by Viper View the latest post
November 11th, 2025, 5:34 pm

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Exhaust Risers Crusader 454 XLi

Last post by bud37 « March 1st, 2018, 6:13 pm
Replies: 13
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by Wayne162 » January 27th, 2017, 2:44 pm

Eyeballing the exhaust risers on my Carver 405 for replacement. All runs well, however I noticed a little corrosion along the gasket seem to the...
13 Replies

5802 Views

Last post by bud37 View the latest post
March 1st, 2018, 6:13 pm
Raw Water Strainer

Last post by Viper « February 25th, 2018, 12:31 pm
Replies: 2
by dcrahn » February 25th, 2018, 7:39 am

Should there a raw water strainer between the outdrive and the engine mounted raw water pump?

2 Replies

2305 Views

Last post by Viper View the latest post
February 25th, 2018, 12:31 pm
I have a 1999 Crver 356 with dual 440 engines. Under full power there is less than 3500 rpm's. Is that normal?

Last post by buster53 « February 22nd, 2018, 11:16 am
Replies: 6
by korchinsky » February 20th, 2018, 1:13 pm

Under full power I cannot get over 3300 rpm's. Is that normal?

6 Replies

2666 Views

Last post by buster53 View the latest post
February 22nd, 2018, 11:16 am
Exhaust risers

Last post by jcoll « February 15th, 2018, 12:45 pm
Replies: 20
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by jcoll » October 13th, 2017, 1:16 pm

One of the off season projects this year is exhaust risers. I'm replacing them on my 1998 Crusader 454 XLi engines based on age. I did have the...
20 Replies

8937 Views

Last post by jcoll View the latest post
February 15th, 2018, 12:45 pm
Crack in the motor block

Last post by Viper « February 9th, 2018, 7:06 am
Replies: 8
by jipatton » December 30th, 2017, 5:00 pm

I recently purchased a 1989 Carver Montego 2755 and was told by my mechanic that it has a crack in the block. I don't know much about boat motors so...

8 Replies

3434 Views

Last post by Viper View the latest post
February 9th, 2018, 7:06 am
Kohler 9C63 gas genset governor pulley

Last post by Grady2011 « January 30th, 2018, 6:13 pm
Replies: 5
by Grady2011 » August 14th, 2017, 10:56 pm

So I just bought the boat and the genset runs smooth but it idles up and down at a nice slow pace but when a load hits it like a ac compressor it...

5 Replies

2204 Views

Last post by Grady2011 View the latest post
January 30th, 2018, 6:13 pm
Raw Water Pressure

Last post by dcrahn « January 28th, 2018, 6:59 am
Replies: 18
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by dcrahn » January 15th, 2018, 9:59 am

Typically, what pressure range do crank driven raw water pumps operate in, idle up to wide open throttle? I've been a little under the weather lately...
18 Replies

5322 Views

Last post by dcrahn View the latest post
January 28th, 2018, 6:59 am
valve job or complete overhaul?

Last post by George D « January 11th, 2018, 12:30 pm
Replies: 9
by glazingguru » January 31st, 2014, 8:34 am

I have a 1995 355 Aft Cabin with 454 carburated Crusaders with 480 hours. In June we did a comression test and both motors were all over the place....

9 Replies

6496 Views

Last post by George D View the latest post
January 11th, 2018, 12:30 pm
Starter Solenoid

Last post by Viper « December 8th, 2017, 8:13 am
Replies: 8
by abcoker » June 23rd, 2017, 2:36 pm

Howdy!
I'm having a strange problem with my port engine that I'm hoping I can get some help with. When I turn the key to the "run"...

8 Replies

3029 Views

Last post by Viper View the latest post
December 8th, 2017, 8:13 am
loud unidentified noise

Last post by Viper « December 8th, 2017, 6:59 am
Replies: 5
by Scienceguy » August 24th, 2017, 8:23 am

Hi All,
My 406 with Volvo Penta engines, has suddenly started making terribly loud noises when in gear. It may be in both sides, but is minimal on...

5 Replies

2324 Views

Last post by Viper View the latest post
December 8th, 2017, 6:59 am
Carver 404-Engine Alarm Merc 7.4 - Part 2

Last post by Viper « December 8th, 2017, 6:57 am
Replies: 10
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by RReardon » August 28th, 2017, 8:55 am

Hi Everyone

This is a new post regarding what I thought were engine alarms (and may still be). I recently received the boat back from the mechanic...
10 Replies

8588 Views

Last post by Viper View the latest post
December 8th, 2017, 6:57 am
Aftermarket EFI

Last post by tomschauer « December 5th, 2017, 9:09 pm
Replies: 22
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by dcrahn » November 28th, 2017, 9:24 am

Has anyone switched over to an aftermarket EFI setup, namely the throttle body type? There are so many options out there that I was just wondering...
22 Replies

7322 Views

Last post by tomschauer View the latest post
December 5th, 2017, 9:09 pm
Volvo Penta Fuel Pumps

Last post by DanM « December 5th, 2017, 4:05 pm
Replies: 12
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by DanM » November 6th, 2017, 4:54 pm

I have 2004 8.1 GiI Volvo Penta engines and recently had issues with fuel starvation at higher RPM's on one motor. A dock mate with the same VP's had...
12 Replies

6408 Views

Last post by DanM View the latest post
December 5th, 2017, 4:05 pm
Please clarify Mercruiser 454 open system thermostat operation

Last post by Viper « November 30th, 2017, 7:27 am
Replies: 15
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by amanphoto » November 12th, 2017, 10:11 am

Hi all,

I am in the process of winterizing my Mercruiser engine. I am a little fizzy on how the open cooling system (raw water through the entire...
15 Replies

7154 Views

Last post by Viper View the latest post
November 30th, 2017, 7:27 am
Hurth transmission issue

Last post by Helmsman « October 19th, 2017, 9:12 pm
Replies: 22
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by Helmsman » May 8th, 2017, 9:28 am

I have a 2006 Hurth ZF 63 A - 2.7 transmission. I have a strong vibration that occurs when accelerating which continues at a lower rate when at...
22 Replies

7460 Views

Last post by Helmsman View the latest post
October 19th, 2017, 9:12 pm
Changing Velvet V drive oil

Last post by bud37 « September 23rd, 2017, 8:58 am
Replies: 11
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by mjk1040 » October 4th, 2016, 9:34 pm

Neighbor has a 1989 Santego, with crusaders and Velvet V Drives. Oil was not dextron or type F, looked to be hydraulic oil. I suggested he change it...
11 Replies

5897 Views

Last post by bud37 View the latest post
September 23rd, 2017, 8:58 am
What is normal operating temperature?

Last post by mjk1040 « September 20th, 2017, 7:14 am
Replies: 11
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by tonyiiiafl » September 18th, 2017, 1:31 pm

My 1994 390 CPMY has twin 7.4 Merc Bluewater gas carbureted engines. Port has 1100 hours, Starboard has 40. Each has 160 degree thermostats. Under...
11 Replies

3806 Views

Last post by mjk1040 View the latest post
September 20th, 2017, 7:14 am
Velvet Drive Model 20-01-006

Last post by Dewmyster « September 13th, 2017, 7:42 pm
Replies: 13
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by Dewmyster » June 19th, 2017, 11:26 am

These are in my 1998 370 Voyager hooked up to 7.4 Mercrusiers. Coming back from the Tall Ship event in Boston this past weekend I had an alarm sound...
13 Replies

6672 Views

Last post by Dewmyster View the latest post
September 13th, 2017, 7:42 pm
cruising rpm

Last post by jcoll « September 8th, 2017, 10:51 am
Replies: 8
by Crowbar » September 5th, 2017, 12:08 pm

twin 305's, 230 hp on 28' voyager. What is a good cruising rpm? Engines have 1550 hrs.

8 Replies

3483 Views

Last post by jcoll View the latest post
September 8th, 2017, 10:51 am
Carver 404-Engine Alarm Merc 7.4

Last post by tomschauer « August 22nd, 2017, 10:25 pm
Replies: 13
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by RReardon » August 20th, 2017, 6:42 pm

Hi Fellow Carver Owners

I hope every one is having a great boating season. I have a 2000 Carver 404, twin Merc 7.4 gas engines. This is what I have...
13 Replies

5461 Views

Last post by tomschauer View the latest post
August 22nd, 2017, 10:25 pm
Tach readings

Last post by Viper « August 17th, 2017, 11:13 am
Replies: 3
by Crowbar » August 16th, 2017, 12:36 pm

305 gas engines upper helm reads 3000rpm on both engines. Lower helm reads 2000 rpm on both engines at the same time. At idle, all are the same....

3 Replies

1631 Views

Last post by Viper View the latest post
August 17th, 2017, 11:13 am
1989 Merc 7.4's RPM's

Last post by Grady2011 « August 14th, 2017, 4:39 pm
Replies: 14
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by Grady2011 » August 8th, 2017, 1:12 pm

Just did something really dumb and I knew better as this is not my first boat much less not my first Carver. I have been out of the boating scene for...
14 Replies

4045 Views

Last post by Grady2011 View the latest post
August 14th, 2017, 4:39 pm
Port engine problems

Last post by Jack Kolberg « August 7th, 2017, 9:54 am
Replies: 12
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by Jack Kolberg » July 27th, 2017, 10:27 am

Greetings all.

I have a 1998 380 Santego with twin 454's. I bought this boat from an estate after it had been in storage for five years. We ended...
12 Replies

4369 Views

Last post by Jack Kolberg View the latest post
August 7th, 2017, 9:54 am
Gasoline Source

Last post by Viper « August 3rd, 2017, 7:02 pm
Replies: 7
by tonyiiiafl » August 2nd, 2017, 8:42 pm

On my 1994 390 CPMY there are three gas tanks, one for port engine, one for starboard, and a reserve tank that each can share. According to the...

7 Replies

2616 Views

Last post by Viper View the latest post
August 3rd, 2017, 7:02 pm
Water leak around dripless bearing

Last post by crquisto « July 27th, 2017, 1:36 pm
Replies: 17
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by crquisto » July 15th, 2017, 6:49 pm

Carver 406 - I have a pretty significant water leak between my port dripless shaft bearing and the blue hose behind it that is supposed to keep sea...
17 Replies

5470 Views

Last post by crquisto View the latest post
July 27th, 2017, 1:36 pm

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