evinrude specks for rebuild 1957 fleetwin 7.5 hp

[HighTrim]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

As Joe stated, get a tube of 3M 847, it is a great product with many uses.

Metal head gasket? What part number did you order? There are metal inserts around the cylinders if that is what you are referring to. Do you have a pic?

 

[nwcove]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

As Joe stated, get a tube of 3M 847, it is a great product with many uses.

Metal head gasket? What part number did you order? There are metal inserts around the cylinders if that is what you are referring to. Do you have a pic?

i too would love to see a pic of this new style metal headgasket....and the brp part #.

 

[jbjennings]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

I'm eager to see it as well. Although I'm always willing to learn something new, I can't see BRP making "new" head gaskets for the '57 7.5's.
INteresting.....
JBJ

 

[HighTrim]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

The only metal gaskets I can think of are the base gaskets, although they had thin gasket on either side of them. They were a mid year change. They were changed on the QDS, not sure about the others. They aided in preventing water from getting to the powerhead, the hole was tight around the driveshaft whereas the original gasket had the large rectangle cut out.

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Picture of the new head gasketbfrom evinrude brp .

 

[RogersJetboat454]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

That's certainly the right part number.

I guess there's something to be said for a completely different parent company that's 4+ decades ahead of having nothing to do with producing that engine, yet they still carry new parts for it. Kudos to BRP.

 

[jbjennings]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Notice on the package the almost forgotten phrase "MADE IN USA".........
It's been a while since I've seen that one. I'm a BRP fan....
I'm still in shock that it's all steel. I expected the steel inserts, but don't see how the all steel would work properly.

 

[RogersJetboat454]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

I expected the steel inserts, but don't see how the all steel would work properly.

MLS gaskets have worked fine on millions of car engines as intake, exhaust, and yes even head gaskets. Guess we will see how it works for the OP.

 

[Joe Reeves]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

I copied that picture, changed the brightness, contrast, etc and see a faint glimmer of what looks like the normal steel ring that would sit upon the top sealing surface of the cylinder sleeve.

Duck..... Are you actually saying that the entirety of that gasket is made of steel such as various automotive gaskets OR is the majority of that gasket a fiber material of sorts?

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

@Joe Reeves

No The gasket ,The new one Im talkingabout is made of metal . The old gasket is a fiber gasket type of material .Thats The replacment one i got from evinrude BRP . So My sealing surface must me flat for the metal type right . I never seen a gasket for a head made of metal , On lawnmowers and I heard of some on older cars , but not on outboard motors . I gave them the part number and I got this gasket for my engine . It must work for some reason , I dont know if I'll have any problems with it . How can I tell when the engine locks up , Just wondering .

 

[HighTrim]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Strange, I cant count the number of 50s OMCS head gaskets that I have done, never once seen an all metal gasket. I order them all from BRP.

 

[nwcove]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

very odd.....cant see how that would seal using the relatively low torque specs for the head bolts....( or screws). has anyone seen an all metal head gasket on any ob, of any era? ohh..wait....i just had a glance at a british seagull that i got in a box.....and it does have an all metal head gasket....soft copper!!

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Well thats the right gasket For the motor . I looked on marineengine.com and it looks the same in the picture . The old gasket is a aftermarket gasket not the one from evinrude . So I guess it should work out . Thats why I was wondering if the gasket needed a sealer coumpound on it like omc gasket sealer . I cant see it sealing water to well , but if thats the gasket they used when it was new it should be ok . I have to touque it to spec's maybe a little tighter 1/4 turn .

 

[nwcove]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Well thats the right gasket For the motor . I looked on marineengine.com and it looks the same in the picture . The old gasket is a aftermarket gasket not the one from evinrude . So I guess it should work out . Thats why I was wondering if the gasket needed a sealer coumpound on it like omc gasket sealer . I cant see it sealing water to well , but if thats the gasket they used when it was new it should be ok . I have to touque it to spec's maybe a little tighter 1/4 turn .

definitely not the gasket used from new, and 1/4 turn past the recommended torque spec could easily double the torque on the head bolts...not a good idea. jmo

 

[jbjennings]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

very odd.....cant see how that would seal using the relatively low torque specs for the head bolts....( or screws). has anyone seen an all metal head gasket on any ob, of any era? ohh..wait....i just had a glance at a british seagull that i got in a box.....and it does have an all metal head gasket....soft copper!!

That was my thoughts as well. It's not like I've never seen an all metal gasket, just not on an outboard. I would think the head and
block would have to be flawless. Honestly, I'd have to call BRP back and double check it. I wouldn't trust it.
Anyway, I'm looking forward to duckland getting this thing running like new.

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Hi Guys I got the bolts from fastenal,but there 1.750 in size not 1.5/8 like the old one's are . Im going to cut down the new bolts and use them . They did not have 1. 5/8 size bolts so I had to order 1.3/4 size with the bolt threads all the way to the top of the bolt head . The standard style bolt thread wont work , you will strip them out with them . Thats what the last person did by using a bolt that you could not use .

I sould have this thing togetter sometime this week im in no hurry for it . Im taking my time on it .

 

[AlTn]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

thought about using washers instead of cutting down the bolts?

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

No they where 1/4 inch to long . Besides one of the bolts wont touque down its striped out . Im going to have to drill it to the next size in mm course . Thats one of the head bolts . I just assembled the powerhead and I have compression now , Man do i too . Not like before . Im going to wait untill tommorow night to put back on the lower unit . I also Have to put back togetter the timing part and retime her . Im going to start from scatch to make sure she is in sync with the trottle and timming . I want her to run like a top . Im preying that I can take her out fishing .

 

[duckland23]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

Hi guy Im have some wear in the cam will that affect the timming on the powerhead .You can clearly see the wear marks on the cam . I want to know if I need to replace it , or can I leave it alone . Im hoping I dont have to replace it the cam is 60.00 dollars from seaway marine in washington . The marks Im takling about are like score marks in the cam you can see them if you have it out . I want her to run right from the first start . I know the cam in important to open and close the points for timming in the engine , if it off the cam sould cause a problem if worn out too much right .

 

[jbjennings]

Re: evinrude specks for rebuild 1957 fleetwin 7.5 hp

If the cam is raising the points .020, then that's all it needs to do. Other than making sure the oiling wick is present and in good shape to oil the cam and prevent the points' rubbing blocks from wearing down prematurely, I wouldn't worry about it.
JBJ