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Suzuki motor flushing: 10yrs results

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Suzuki motor flushing: 10yrs results

Old 02-14-2020, 06:05 PM
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Default Suzuki motor flushing: 10yrs results

After 10years and 1,735hrs of motor flushing after every use, the water passageways can be seen in the following photos.

Looks to me that it really makes a difference and was worth the effort. Just wanted to share these results.



Old 02-14-2020, 06:08 PM
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Awesome. Thanks for sharing. 👍
Old 02-14-2020, 06:45 PM
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Looks great. Your work has served you well
Old 02-14-2020, 06:48 PM
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Did you use salt away or just water?
Also, did you flush with muffs on the lower unit and the motor running or did you flush with the attachment and motor off.
Thanks
Charlie
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Old 02-14-2020, 07:56 PM
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Originally Posted by Cool Change1 View Post
Did you use salt away or just water?
Also, did you flush with muffs on the lower unit and the motor running or did you flush with the attachment and motor off.
Thanks
Charlie
No muffs and just plain hose water alone.

Boat wet slipped so motor off, just tilt, attach hose with garden fittings, and turn H2O on for 5-10mins. Repeat next time..
Old 02-14-2020, 08:03 PM
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Thanks for that. Have you looked at your thermostats? Mine were pretty crusty after just 250 hours. Replaced them but was astounded at the build-up. I do flush from the ports like you do. I'm on a lift, Since seeing the build-up I've been using salt-a-way about 4 times per year.
Old 02-14-2020, 08:10 PM
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Originally Posted by hjorgan View Post
Thanks for that. Have you looked at your thermostats? Mine were pretty crusty after just 250 hours. Replaced them but was astounded at the build-up. I do flush from the ports like you do. I'm on a lift, Since seeing the build-up I've been using salt-a-way about 4 times per year.
I change out my T-Stats every 2 years and you would not be able to tell the difference between the old or the replacements; they always look as if they just came out of the box. Always...

Most of the time the change out seems pointless.

When doing the flush, I make sure to do it right away while the motor is still hot. Maybe that makes the difference.
Old 02-15-2020, 01:54 AM
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I agree doing it hot before the water evaporates and cooking on the salt.When that calcium builds up around the cylinder jackets it's pretty hard like i hit it with a hammer to crack it.Thats what made me think of the pond pump/basin flush with vinegar to avoid beating on it.Of course that was an extreme case of no flush saltwater over 5 yrs.
Old 02-15-2020, 03:30 AM
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I am only 22 months but 400hours. my thermostats will be part of my 100hr service from now on.
Old 02-15-2020, 04:18 AM
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How far are you from an inlet? Makes a big difference, ie. salt vs brackish water.
Old 02-15-2020, 05:42 AM
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I think your habit of flushing the motor while it is warm is key to your minimal crusting.
Good for you.
Charlie
Old 02-15-2020, 06:34 AM
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I guess if money is no concern, no way mine have needed to be changed that often.

Originally Posted by tcijoe View Post
I am only 22 months but 400hours. my thermostats will be part of my 100hr service from now on.
Old 02-15-2020, 06:39 AM
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I’d love to see someone with twins flush one motor for that amount of time just for comparison of two motors in the same environment same treatment only difference is the flush
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Old 02-15-2020, 06:45 AM
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Pretty impressive have heard by a couple people on this site that say these motors are rust buckets. I have about the same amount of hours and run mine on the muffs for 10 minutes a side and would think they look the same inside. The outside is also rust free.


Originally Posted by NIGHTIDES View Post
No muffs and just plain hose water alone.

Boat wet slipped so motor off, just tilt, attach hose with garden fittings, and turn H2O on for 5-10mins. Repeat next time..
Old 02-15-2020, 07:14 AM
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Thanks so much for sharing this
Old 02-15-2020, 07:41 AM
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OP what motor and where are you slipped???????????
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Old 02-15-2020, 11:23 AM
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Originally Posted by lobsdiver1 View Post
How far are you from an inlet? Makes a big difference, ie. salt vs brackish water.
100% saltwater and very close to inlet.

One other thing, these motors have zinc anodes on the block that need to be changed out so galvanic corrosion does not take place on the block itself.

I would replace them every two years since that would be how long they would need to get 'eaten up' by about 30-50%. At one year intervals, they were all still good.

Last edited by NIGHTIDES; 02-15-2020 at 11:33 AM.
Old 02-16-2020, 03:56 AM
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Originally Posted by HighSpeedPursuit View Post
I guess if money is no concern, no way mine have needed to be changed that often.
I guess you assumed that I would swap them out at 100hrs. I just want pull them and clean them. At $50 a piece, no way I am changing them for no reason.
Old 02-16-2020, 06:18 AM
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The thermostats have three different dissimilar metals. So they atack themselves and need to be changed every 200 hours.
Old 02-16-2020, 06:28 AM
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Originally Posted by NIGHTIDES View Post
After 10years and 1,735hrs of motor flushing after every use, the water passageways can be seen in the following photos. Looks to me that it really makes a difference and was worth the effort. Just wanted to share these results.
Originally Posted by NIGHTIDES View Post
No muffs and just plain hose water alone. Boat wet slipped so motor off, just tilt, attach hose with garden fittings, and turn H2O on for 5-10mins. Repeat next time..
Originally Posted by NIGHTIDES View Post
I change out my T-Stats every 2 years and you would not be able to tell the difference between the old or the replacements; they always look as if they just came out of the box. Always...Most of the time the change out seems pointless. When doing the flush, I make sure to do it right away while the motor is still hot. Maybe that makes the difference.
Originally Posted by NIGHTIDES View Post
100% saltwater and very close to inlet. One other thing, these motors have zinc anodes on the block that need to be changed out so galvanic corrosion does not take place on the block itself. I would replace them every two years since that would be how long they would need to get 'eaten up' by about 30-50%. At one year intervals, they were all still good.
Thanks for sharing this. Great to see some long terms results from flushing.
My only new outboard (Yam 4 stroke 150) was in brackish then fresh water and only racked up 200 hours on her before the boat was sold.

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