capngregorus
Cadet
- Joined
- Jan 28, 2010
- Messages
- 17
Alrighty, first post after a couple years of tinkering and reading this wonderful resource.. It's helped me out a lot.
I have 2 old crossflows, the first -on the boat now- is a Johnson, unknown year, possibly 1988, due to the carbs that it came with, but really not possible to tell by anything other than bolt ons. It was bought as a 175 but now has the 235 carbs on it, and i've spent lots of time on it.. basically everything except doing a rebuild.
5 comps 100. 1 cylinder at 90. Its a 25 inch leg. It's model number is unreadable (jibberish according to the id system) and the welsh plug is also jibberish. When I got it bad things had happened in its past.. Reed blocks were in upside down and inside out, fuel would throw outwards of the carbs, fuel pumps were trashed, float needles eroded.. heads were covered in marks from rings being smashed up against them.. But eventually got her together with good parts and gave her some life again.
Has no reverse as the gearbox control arm (in the casing, between the gearbox and powerhead) snapped on her 2nd to last voyage, and I had it re welded, but unluckily had it welded too long and needs a grinding down and re welding, just havent got round to it, since theres been other things getting the attention
ON the last trip out, I drowned the poor thing with a 50:1 mix of 4 stroke oil.. Over a period of 2 trips. Sigh.. along with 200l of fuel.. lots of swearing.. and crying.. And another 100l of fuel, suprisingly she ate through the first lot, no problems.
The next trip she was cutting out under load. Got her back to shore by figuring out what we'd done and then adding 40l straight fuel to thin out te mixture and could get just on 1000rpm. Didn't catch anything on the way back either, trolling lures for about 2 hours. What a day.
We cleaned the cylinders by running normal 50:1, pulling out a spark plug one at a time, and spraying small amounts of water in the hole while it was running.
Then the trouble started.
Back on the right fuel She'd idle in the driveway, and in the water, but I couldn't get it to run under load. Brought it home and pulled bits apart..
Since then replaced fuel lines, and cleaned the fuel pumps, which had a silicon like substance stuck in them. It idles better in the driveway but I haven't tried again on water. (an hour away)
I had cleaned the carbs literally right before the incident. Inspected the top one which was looking as good as when I cleaned it. I Haven't cleaned them again but plan to shortly, since they might wind up in a box with some lanolin on them for a few years.
Will there be any deposits that i'm overlooking?
The second motor, I just bought, is a 1976 200hp Evinrude. It has the 20inch leg. It's in a few parts that all look to be in working order.
Electrics look very different, definately older than the johnson, some wires are severed and some stripped.. looks like someone got frustrated.
this block has 100psi on all cylinders.
it has a broken lower pivot that allows it to steer, between the outboard and it's bracket.
Everything else seems ok, but haven't really torn into it yet. Only time can tell I guess.
Now.. After my long yarn.. what i need to know, is it possible that the 76 powerhead will bolt up to the 80's body? Are the exhaust ports and bolt patterns the same?
Also in the Johnson,
Will there be any deposits that i'm overlooking?
I'm tossing up between fixing the evinrude's steering using donor parts of ol johnno and cutting my transom down (that i built up when I bought the johnson)
Or fixing the gearbox on the johnno, and then swapping powerheads and the electrics.
Either way i'm just hoping to use the powerhead with the best compression with the best outcome = me and my mates fishing on saturday.
Keen to know what anyone with experience in this area might think.
Thanks for reading and any info
Greg
And i'll never not check the oil i'm buying. Twice. Ever.
I have 2 old crossflows, the first -on the boat now- is a Johnson, unknown year, possibly 1988, due to the carbs that it came with, but really not possible to tell by anything other than bolt ons. It was bought as a 175 but now has the 235 carbs on it, and i've spent lots of time on it.. basically everything except doing a rebuild.
5 comps 100. 1 cylinder at 90. Its a 25 inch leg. It's model number is unreadable (jibberish according to the id system) and the welsh plug is also jibberish. When I got it bad things had happened in its past.. Reed blocks were in upside down and inside out, fuel would throw outwards of the carbs, fuel pumps were trashed, float needles eroded.. heads were covered in marks from rings being smashed up against them.. But eventually got her together with good parts and gave her some life again.
Has no reverse as the gearbox control arm (in the casing, between the gearbox and powerhead) snapped on her 2nd to last voyage, and I had it re welded, but unluckily had it welded too long and needs a grinding down and re welding, just havent got round to it, since theres been other things getting the attention
ON the last trip out, I drowned the poor thing with a 50:1 mix of 4 stroke oil.. Over a period of 2 trips. Sigh.. along with 200l of fuel.. lots of swearing.. and crying.. And another 100l of fuel, suprisingly she ate through the first lot, no problems.
The next trip she was cutting out under load. Got her back to shore by figuring out what we'd done and then adding 40l straight fuel to thin out te mixture and could get just on 1000rpm. Didn't catch anything on the way back either, trolling lures for about 2 hours. What a day.
We cleaned the cylinders by running normal 50:1, pulling out a spark plug one at a time, and spraying small amounts of water in the hole while it was running.
Then the trouble started.
Back on the right fuel She'd idle in the driveway, and in the water, but I couldn't get it to run under load. Brought it home and pulled bits apart..
Since then replaced fuel lines, and cleaned the fuel pumps, which had a silicon like substance stuck in them. It idles better in the driveway but I haven't tried again on water. (an hour away)
I had cleaned the carbs literally right before the incident. Inspected the top one which was looking as good as when I cleaned it. I Haven't cleaned them again but plan to shortly, since they might wind up in a box with some lanolin on them for a few years.
Will there be any deposits that i'm overlooking?
The second motor, I just bought, is a 1976 200hp Evinrude. It has the 20inch leg. It's in a few parts that all look to be in working order.
Electrics look very different, definately older than the johnson, some wires are severed and some stripped.. looks like someone got frustrated.
this block has 100psi on all cylinders.
it has a broken lower pivot that allows it to steer, between the outboard and it's bracket.
Everything else seems ok, but haven't really torn into it yet. Only time can tell I guess.
Now.. After my long yarn.. what i need to know, is it possible that the 76 powerhead will bolt up to the 80's body? Are the exhaust ports and bolt patterns the same?
Also in the Johnson,
Will there be any deposits that i'm overlooking?
I'm tossing up between fixing the evinrude's steering using donor parts of ol johnno and cutting my transom down (that i built up when I bought the johnson)
Or fixing the gearbox on the johnno, and then swapping powerheads and the electrics.
Either way i'm just hoping to use the powerhead with the best compression with the best outcome = me and my mates fishing on saturday.
Keen to know what anyone with experience in this area might think.
Thanks for reading and any info
Greg
And i'll never not check the oil i'm buying. Twice. Ever.
