Pistons for Model 2003 S/N 5792

rbruce63

Petty Officer 1st Class
Joined
Aug 30, 2003
Messages
212
Overheated my Chrysler 20 HP, scored pistons, have already found rings and overhaul gasket kit, will sleeve and now I need to find the pistons P/N 190015. Please help as I will repair this motor as it was used less than 25 hours by my dad.
 

rbruce63

Petty Officer 1st Class
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Aug 30, 2003
Messages
212
Re: Pistons for Model 2003 S/N 5792

Thanks guys! Found the rings in New York, the pistons in Texas, the sleeving will be done in Costa Rica.<br /><br />The run down of the costs is the following:<br /><br />Overhaul Labor $100<br />Overhaul Gaskets 40<br />Sleeving and Honing 160<br />Rings 30<br /> --------<br />Total $330
 

Terry H

Lieutenant Commander
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Sep 25, 2001
Messages
1,862
Re: Pistons for Model 2003 S/N 5792

good deal rbruce...be sure to use oil next time...<br /> :)
 

rbruce63

Petty Officer 1st Class
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Aug 30, 2003
Messages
212
Re: Pistons for Model 2003 S/N 5792

Couldn't find oversize pistons for my 20 so I bought standard and found them in Texas for $40. So this brings the cost to $330. <br /><br />A used powerhead costs around $200 which makes more economic sense, but less confidence than mine which is almos new and will be rebuilt.<br /><br />Hope this helps somebody make up his mind. I think this rebuilding makes even more sense in large high horse power motors where the cost of replacement puts you in the poor house.
 

rbruce63

Petty Officer 1st Class
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Aug 30, 2003
Messages
212
Re: Pistons for Model 2003 S/N 5792

Chief the overheating was due to the water pump back plate not being totally flush with the lower unit base. <br /><br />I bought a heavy duty pump and the plate was different from the original pump, the motor cooled but the water flow wasn't enough for WOT.<br /><br />I am very careful with oil mixtures!
 

rbruce63

Petty Officer 1st Class
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Aug 30, 2003
Messages
212
Re: Pistons for Model 2003 S/N 5792

My motor overheated twice after a 1 hour trip to the channels in the Atlantic. I finally took it to a mechanic and we found this overheating was due to a grommet in the water pump line that came loose starving the motor of cooling water and leading to its untimely overheating and "4 pt seize". <br /><br />The second time the motor overheated 2 weeks ago, it scratched cylinders #1 and #2. Cylinder #2 sustained the worst part. Compression is now 100 psi on #1 and 95 psi on #2. It should be according to the workshop manual at 125 to 115 psi. One mechanic at a motor's forum has sentenced that the motor's performance will degrade as time goes by and that a ring will probably break leaving me stranded at the mercy of the Pirates of the Caribbean (we were taught that we bordered with the Atlantic to the East now it's the Caribbean) and since we are in the Caribbean I know about these pirates! <br /><br />So my options at this time are to invest in a brand new Mercury 25 Classic at $2,500 electric start and controls included, a 1998 Mercury 25 Sea Pro with less than 25 hours at $1,100 plus controls $300, plus electric start $300 (it already has an alternator), or, I am still exploring the possibility to hone the sleeves of my Chrysler 20, replace the rings with new ones, and I am waiting on the quote of the parts, if there are any parts in Missouri or Canada left. Finally the option is doing nothing and this is repairing my Chrysler back, no honing of the cylinder sleeves and enjoying boating with others just in case I have to burry my beloved Chrysler at sea. This would be a $100 option since I will be adding this much labor to get it pumping water back again but I will loose the controls, propeller, and other parts I have accumulated. By the way, the motor starts great on the first pull...the mechanic says to use it and play by ear, I want to turn back time! <br /><br />I feel that putting a $2,500 motor in my beloved boat will make the loss when I trade in huge. Putting the $1,100 motor (a lottery if it was mistreated, the leg is polished by sand and the propeller hit something, it was owned by a club of friends that used the boat, no single owner) plus controls $300 puts it very close to a brand new Classic 25 with controls but without alternator at $1,700 and this one comes with a 1 year warranty. Other brands are discarded as these are more expensive to buy.
 

rbruce63

Petty Officer 1st Class
Joined
Aug 30, 2003
Messages
212
Re: Pistons for Model 2003 S/N 5792

Chief: That is some background!
 
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