Official 350 Thread

Hi All,
Excited to learn of this thread. I've been posting on classic boats but feel this is my new home. We have a 90 350 with both 454's out under going rebuilds. Additionally the marina will be installing an extended swim platform I ordered from Swimplatforms.com. that is once engines are reinstalled. Was hopeful to upgrade the interior and exterior upholstery but funds will be dedicated this winter to getting engines back in and running. I'm sure I'll have lots of questions for you all and hopeful I can contribute back to the forum. Kevin
 
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Beech2000 said:
Hi All,
Excited to learn of this thread. I've been posting on classic boats but feel this is my new home. We have a 90 350 with both 454's out under going rebuilds. Additionally the marina will be installing an extended swim platform I ordered from Swimplatforms.com. once engines are reinstalled. Was hopeful to upgrade the interior and exterior upholstery but funds will be dedicated this winter to getting engines back in and running. I'm sure I'll have lots of questions for you all and hopeful I can contribute back to the forum. Kevin
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Glad to hear your here! What lake are y'all on? Have plenty of upgrades planned over the following couple months to share.
 
Were on a small widened river called Lake Allatoona in Bartow County, GA. We park her at Park Marina :)
I just got back from super cleaning the bilge area with pressure washer and rags. Boat is back in slip with engines removed. Have so many items on my todo list before engines get reinstalled. New water heater in my living room, All new seawater hoses. Replacing all hose securing ty wraps. Have new Vacu Potty hoses. Have all new exhaust risers and manifolds in garage once engines are rebuilt. Thanks for the reply.
 
I pulled my starboard side engine out a few months ago and replaced the trans, while I had it out I DEEP cleaned the bilge from the long time leaking shaft seals and trans from the PO. Now it's all clean and dry, the way I'll keep it. Also replaced all raw water hoses, repacked rudders and shafts, replaced hot water heater (mines in the bilge behind the genny), serviced everything, and replaced both blowers. It took me about 4 days to do from haul out to re splashing. We are on Old Hickory Lake, here in middle TN.
 
LastCall350 said:
I pulled my starboard side engine out a few months ago and replaced the trans, while I had it out I DEEP cleaned the bilge from the long time leaking shaft seals and trans from the PO. Now it's all clean and dry, the way I'll keep it. Also replaced all raw water hoses, repacked rudders and shafts, replaced hot water heater (mines in the bilge behind the genny), serviced everything, and replaced both blowers. It took me about 4 days to do from haul out to re splashing. We are on Old Hickory Lake, here in middle TN.
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Raw water hoses, Yeah Check this boat sinking hose I pulled from stbd side. Yikes.
MZYG5106[1].JPG
 
LastCall350 said:
Whew that one was absolutely past it's expiration date.
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Yeap. Just spent a wonderful warm January day in the engine compartment scrubbing. This boat was neglected but I have hopes. Sure is easy to clean with engines out. Wife spent the day with me on the dock reading. I'm exhausted and filthy. I'll post pictures once ready. Right now depressingly ugly.
 
Looking for Mercruiser Service Manual #15
New or used three ring binder paper copy preferred to add to my ship records.
PDF could be okay but not great with PC's... Please know I visited the current ebay posting from NY of PDF but I would rather pay someone for an authentic paper copy or actual Mercury hard CDrom. Hate internet frills.
 
LastCall350 said:
I pulled my starboard side engine out a few months ago and replaced the trans, while I had it out I DEEP cleaned the bilge from the long time leaking shaft seals and trans from the PO. Now it's all clean and dry, the way I'll keep it. Also replaced all raw water hoses, repacked rudders and shafts, replaced hot water heater (mines in the bilge behind the genny), serviced everything, and replaced both blowers. It took me about 4 days to do from haul out to re splashing. We are on Old Hickory Lake, here in middle TN.
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Question: where are the blowers located and is it easy to get to them? My port side blower starts out noisy then goes to quite. Would like to replace it during my "winter projects" Thanks
 
QT1 said:
Question: where are the blowers located and is it easy to get to them? My port side blower starts out noisy then goes to quite. Would like to replace it during my "winter projects" Thanks
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On our 90 350 there are two. One that runs when starting generator and the second for the engines. Both on our boat are located behind the generator along the stbd side in the engine compartments. I remove the far stbd floor board under ice maker lay on belly. I think they're 4" models.
 
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Thanks, much appeciated!
 
Beech2000 said:
Looking for Mercruiser Service Manual #15
New or used three ring binder paper copy preferred to add to my ship records.
PDF could be okay but not great with PC's... Please know I visited the current ebay posting from NY of PDF but I would rather pay someone for an authentic paper copy or actual Mercury hard CDrom. Hate internet frills.
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I may have a duplicate in my manuals at the shop, I'll check today and see.
 
QT1 said:
Question: where are the blowers located and is it easy to get to them? My port side blower starts out noisy then goes to quite. Would like to replace it during my "winter projects" Thanks
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In my 91' they are both mounted on each inside stringer right in front of the transom. I replaced both of the original worn out Atwood's last fall with 2 new 4" Rules.
 
LastCall350 said:
In my 91' they are both mounted on each inside stringer right in front of the transom. I replaced both of the original worn out Atwood's last fall with 2 new 4" Rules.
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Strange how ours is a 90 with both blowers on stbd stringer and yours one year new have one on each side ahy?
Now that engine bays are clean; I won't be so embarrassed to share. I have a bag of a 100 marine zip ties I'm reinstalling to secure wiring and hoses. Additionally excited to have found two universal closed cooling tanks for $40 from o'riely auto parts.
 
I'm pulling out an aged Atwood water heater. There were two 1/2" NPT gray colored nylon fittings for the hoses. One is a check valve. The shorter one is not. I'm replacing the water heater with an Kuuma unit. Installation directions say nothing about installing a check valve.
Do I need one?
 
Beech2000 said:
I'm pulling out an aged Atwood water heater. There were two 1/2" NPT gray colored nylon fittings for the hoses. One is a check valve. The shorter one is not. I'm replacing the water heater with an Kuuma unit. Installation directions say nothing about installing a check valve.
Do I need one?
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Yes, you need it on the cold side to prevent hot water in the heater back flowing into the cold side of the system. I replaced my oem with a kuma last fall, and had to splice in some new pex to be able to use newer style fittings and check valve. I'm down at the boat now, I'll snap some pics here shortly.
 
Beech2000 said:
Strange how ours is a 90 with both blowers on stbd stringer and yours one year new have one on each side ahy?
Now that engine bays are clean; I won't be so embarrassed to share. I have a bag of a 100 marine zip ties I'm reinstalling to secure wiring and hoses. Additionally excited to have found two universal closed cooling tanks for $40 from o'riely auto parts.
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It is weird how the same models differ in small ways, a dock neighbor also has a 90' model 350 DA. His water heater is under the seat in the aft stateroom, on my 91' it is in the bilge in front of the generator.
 
Here is a pic of my hot water heater and plumbing. The first problem is, the gray line in our boats is 1/2", all of the new colored line and fittings is 15mm. Whale makes the adapters to go from 1/2" to 15mm which you can see I used those adapters and spliced in the colored lines so I could use the new style whale fittings for my heater as the old oem fittings leaked plus I needed a new check valve. Let me know and I can get you part numbers for everything. I also plumbed the relief valve into the rear sump box that is in the engine compartment for the condensation line on the salon AC unit.
 

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Nothing ever easy. Many thanks you for taking the time to help. Much appreciated!
Yes if you could provide details on fittings I'll get them on order. As I write obviously not able to power up the water pump.
 
Beech2000 said:
Nothing ever easy. Many thanks you for taking the time to help. Much appreciated!
Yes if you could provide details on fittings I'll get them on order. As I write obviously not able to power up the water pump.
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You've got that right, nothing is ever easy. I'll dig up the invoice in the morning and send them to you.
 
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