piston rings for a 1956 fastwin 15?

[levi_tsk]

ok so i just bought a fastwin for 20 bux and im going through sourcing parts i might need (as i go pick it up tomorrow) i found rings for it through hastings but where do i get them as hastings is dealer only sales ?
(they have ALL the old outboard piston rings btw)

HOWEVER on the other hand i saw that the 1993+ 9.9/15 engines have the same bore ? are the rings the same thickness??? id imagine that the 56 has rectangular cross-section rings, are they like that on the 93+? i did notice that theres only 2 for each piston and IF they are the same thickness and shape youd need 3 sets as mine,like most old outboards, has 3 ring lands
thanks for any help,
levi
also i dont see a lower unit seal kit but i did find all the seals on marineengine.com do they make a kit?

 

[1946Zephyr]

Re: piston rings for a 1956 fastwin 15?

You can get your rings at Sea-Way Marine in Seattle or Engine Blade and Prop. The newer motors you're refering too, are most likely different rings

 

[F_R]

Re: piston rings for a 1956 fastwin 15?

The correct ring sets are part number 378416 (for one piston). marineengine.com has two sets in stock. Better hurry.

As far as I know, there is no seal kit for that one. You have to pick out the individual parts.

 

[1946Zephyr]

Re: piston rings for a 1956 fastwin 15?

vintage outboard used to sell excellent seal kits, that actually matched the original OEM quality, but I can't seem to get his site to come up. I bought kits from him before and was really pleased. You can give them a call and see if you have any luck. His number is:

509-747-9960

Good luck

 

[jpatti75]

Re: piston rings for a 1956 fastwin 15?

Another guy to try is Dano Gano. I bet he has the rings, too. Also, I needed the seals for a 1954 Fastwin, and he put the kit together for me and gave me one price. His prices are very reasonable and he doesn't gouge you on shipping.

http://www.ganotech.com/

Give him a try. I don't think you'll be disappointed.

JP

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

sweet thanks guys
well i got it home yesterday and it appears that the PO didnt take care of the engine properly (typical from what ive heard) but the compression is REALLY good i popped the spark plugs out and looked inside the cylinders and they look really clean so all is good there however i took the lower unit off and found sand in the exaust, between the mating surfaces and, in various other places, so i TRIED to take the waterpump housing off and the heads wrung off all of the three screws that hold the housing down so what do i do now?
the screws coroded into the holes in the housing and the housing wont come off ? i have lefthanded drill bits and i think that should get the screws out BUT should i heat it up first??? im thinking if i heat it that maybe the housing will come off and then ill be able to grab whats left of the screws with pliers and HOPEFULLY take them out with no drilling involved im going to go get a can of blaster here in a few and try that
any suggestions ????

 

[AlTn]

Re: piston rings for a 1956 fastwin 15?

if the lu fluid was mostly water..I'd suggest to you to invert the lu, remove the 6 screws holding the halves together, pull the lower half off...shift rod will come with it and the prop shaft and gears might as well...and examine the innards...another lu might be the way to go if that one is too funky...an example..1958 10 hp. pinion gear...$80...$130 thru dealer as "vintage"...used "good" lu from Laing's....$200...the driveshaft and exhaust housing on this 1958 are badly scored and way out of clearance...F_R and others pointed out that the lu's on these are a weak link...if this motor were mine , I'd have put a used lu on it...it's real easy to invest a lot of time and still have funky monkey

 

[F_R]

Re: piston rings for a 1956 fastwin 15?

Say what? I thought we were talking about a 15 here. And where did I miss the part about being full of water? Maybe I need to go back and read the thread again.

levi, you are about to enter the joys of working on outboard motors. There are a couple of ways to proceed from here. One is to destroy the pump housing in hopes of later getting hold of the screws. Another is drill the screws part way down through the housing, till you can pry it off, then finish drilling them out of the gearcase.

Those screws are stainless steel in aluminum housings and chances are about 99% to 100% you will mess it up when you start drilling, unless you are very experienced in that sort of thing. There are reasons the pros get paid what they do. And some so-called "pros" don't know how to do it either.

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

ive drilled out bolts before with mixed sucess but on this the drive shaft and shift rod are kinda in the way for my drill so that i cant get the drill good straight and square to drill the hole i went and got a can of pb blaster and hosed it down about an hour ago and i figure after i eat ill mess with it i havent opened the lu to check the fluid but i will after i eat and its a 56 not a 58 and from what i understand the lower units are better on these than on the 18's is this true? looks like mine has bigger gears judging from the picks i saw of them on the net
also i looked up inside at the bottom of the power head and it doesnt apear that it has that baffle that protects the crank from water should i fix this? ???

i took out most of the powerhead screws one at a time putting high temp NICKEL anti-seize on each before putting them back in and tighten each up and i figure this should keep any bolts/screws from seizing up in the future there are a few i cant get to without taking the engine off the transom bracket but ill do that later
p.s. the guy ive bought parts from before said he had a nib set of gears if i needed them for $75 and btw did i mention i only paid 20 bux for this thing? and ill post up some pics later

 

[F_R]

Re: piston rings for a 1956 fastwin 15?

Why would it be better than the 18? Anyhow, about that baffle, it is worthwhile to install it, but it is not a magic cure-all for the big problem lurking up in there. Those motors had a terrible lower seal on the crankshaft. And when they fail, water gets in the crankcase and there go all the bearings. If you haven't replaced that seal, you should.....but one thing at a time, get that pump fixed first.

I'm glad you have tackled screws before. This is no place to learn how.

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

well im singed but triumphant
i boogered up the housing trying to drill the bolts out and it still wouldnt come off so i figured what the heck ? so i drilled 2 5/32" holes in the top of the housing and then ran some 10-32 screws down in to the holes until they bottomed out on the wear plate and then alternately tightning each of the screws the screws pressed the housing off leaving the stumps of the mounting screws sticking up i tried grabbing those but they wrung off even with the lu so i centerpunched the screws and drilled them out starting with a 1/16" drill bit and working my way up through the sizes until the screw holes were 5/32" and then i ran a 10-32 screw down in the hole for a tap and whablam!!! I HAD FIXED IT!!!
i still havent opened the lu which if the motivation strikes me i may do later
but i wanted to ask what oil to use in the LU? i have some royal purple 80W90 gear oil will that work???
forgot to add that the housing was toast anyway so it would have been replaced even if it'd come off easily which brings me to my next question -should i get an nos aluminum housing or the updated housing with the ss cup and plastic stuff??? the plastic one is pn#0382468 and comes with everything and the aluminum one is just the housing pn#313543 ?? seems to me a little sand and that aluminum one would be toast again what do you guys think?

 

[F_R]

Re: piston rings for a 1956 fastwin 15?

That oil will be fine. As for the pump housing, I wasn't aware they have a plastic one for that motor, but I haven't researched it either. But if you are sure it fits, by all means go for it. They are light years better than the old aluminum ones.

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

yeah they are definitely for that engine looks like it uses a different waterpump impeller (taller fins) they are for the 15,18,
i got the drain and fill plugs out and the oil looked good no metal or milkyness and it was holding pressure as it shot oil all over me when i pulled the first plug out (i assume this was from reinserting the driveshaft after i finished rethreading the waterpump bolt holes

this one has been converted to a normal fuel pump with the updated transfer cover BUT i felt the fuel lines and they are as hard as a rock should i replace them ? i have the stuff to do it on hand
should i rebuild the pump too?- im asuming that if the fuel lines are this hard the diaphram is in the same shape as are the gaskets in the carb - the guy i got it from said itd been sitting for 2 1/2 years

 

[wilde1j]

Re: piston rings for a 1956 fastwin 15?

Hastings rings are typically available from big auto parts suppliers. I used to get them for a Merc 60J little racing motor. We used to change the rings after every few races. Shouldn't be that hard to find in an urban area.

 

[tx1961whaler]

Re: piston rings for a 1956 fastwin 15?

Hastings has an online store:
http://www.hastingsmfg.com/RingFind...UTM&AppMOCD=EVINRUDE Outboard Motors&AddText=

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

well i wont need rings but i do need a fuel pump rebuild kit for fuel pump pn#322981 cant find it ANYWHERE
i got the fuel lines changed out with the new ethanol resistant stuff took the carb off and hopefully this week ill be able to get a carb kit
on a side note the guy i got the engine from said that he tried to adjust the points because "it wasnt running quite right" but when i took the carb off i think i found the problem the high speed valve nut was REALLY loose and id venture to say that the points were ok (they look spotless and so do the coils ) i bet that nut was allowing a little air by it and making the engine run "not quite right" also i dont see any marks on the side of the flywheel to adjust the points . can i just open the port and adjust the points at their widest? its .020 right?

 

[tx1961whaler]

Re: piston rings for a 1956 fastwin 15?

Did a 1956 come with a fuel pump, or was that a retrofit??

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

retro fit with the updated transfer cover

 

[1946Zephyr]

Re: piston rings for a 1956 fastwin 15?

Sorry to say it, but your 15 is not a 58. The 15 was discontinued in 56 and the 18 was started in 57. And the two do have the same lower unit.

The fuel pump wasn't installed on these till 1960. There are ways to retrofit pumps on these without too much trouble.

Did you take a compression test, by chance?

Yes, the points set at .020. I do believe it will say it on the flywheel. Just remove the pawl ring and the aluminum plate will
cover the hole you need to see the points.

 

[levi_tsk]

Re: piston rings for a 1956 fastwin 15?

its not an 18 its a 1956 15hp model number 15016 the transfer cover has been updated to the one from an 18 post 1960 the part number on the fuel pump is 322981 and i cant find it anywhere

i took the pull start off and then the little plate with the 4 screws that covers the hole but isnt there a mark on the outer part of flywheel that lines up with another mark somewhere so you can get it at EXACTLY .020"???????

no compression test yet but it feels harder to turn than my 5.5 and its around 90psi