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by kmkemper
Mon Aug 24, 2015 6:24 pm
Forum: Engines & Powertrain
Topic: K Motor Zenith 8983 Adjustment/Repair
Replies: 12
Views: 2822

Re: K Motor Zenith 8983 Adjustment/Repair

Thanks Jim and Marty - glad to have the engine together and the boat running. Yes, per the factory manual, the torque spec on the head is 60 lbs, something Sierra Boat looked up for me while I was there. I re-torqued the head again after running it, which it needed on most of the nuts. I appreciate ...
by kmkemper
Sun Aug 23, 2015 3:37 pm
Forum: Engines & Powertrain
Topic: K Motor Zenith 8983 Adjustment/Repair
Replies: 12
Views: 2822

Re: K Motor Zenith 8983 Adjustment/Repair

Update - this weekend, we brought the boat back up to Donner Lake in the mountains for the weekend. Before the trip. the boat seemed to run well enough in the driveway after playing with the choke and the spark plug wires, but once we got it up here, it was still running rough under load. Adjusting ...
by kmkemper
Wed Aug 19, 2015 6:41 pm
Forum: Engines & Powertrain
Topic: K Motor Zenith 8983 Adjustment/Repair
Replies: 12
Views: 2822

Re: K Motor Zenith 8983 Adjustment/Repair

Thanks all - I suspected as much on the spark plug ends, and have had to mess with them to secure a good fit on the tips of the plugs. Wasn't sure if this was simply "the way things were" and retained as an attempt to maintain originality. I spoke today with the builder of the engine (John Matzen) w...
by kmkemper
Wed Aug 19, 2015 11:12 am
Forum: Engines & Powertrain
Topic: K Motor Zenith 8983 Adjustment/Repair
Replies: 12
Views: 2822

Re: K Motor Zenith 8983 Adjustment/Repair

Jim - that's a good idea, to take a "plug cut" while on the water, I will do that. I don't believe that the wires are suppression wires, they look to me like reproductions of original, like most things on the boat. Attached is a photo of the wires, perhaps you can tell me what I have, I am new to th...
by kmkemper
Mon Aug 17, 2015 11:02 am
Forum: Engines & Powertrain
Topic: K Motor Zenith 8983 Adjustment/Repair
Replies: 12
Views: 2822

K Motor Zenith 8983 Adjustment/Repair

Further to my previous post regarding my rich-running condition, I changed out the ignition coil and plugs, and fiddled around with the choke lever. The return spring on the choke was a little stretched out, and so I replaced it. After running in the driveway for about 20 minutes, at various RPMs (u...
by kmkemper
Wed Aug 05, 2015 11:27 am
Forum: Engines & Powertrain
Topic: 1942 K Motor plugs rapidly fouling
Replies: 9
Views: 1819

Re: 1942 K Motor plugs rapidly fouling

Thanks, and good to hear from you Marty!

I will inspect the choke, but I have a feeling that the coil may be involved, since the problem seems new in origin and I haven't messed with the fuel system at all. Easy to drop in a new coil to replace the one I have, to see if that makes any difference
by kmkemper
Tue Aug 04, 2015 4:25 pm
Forum: Engines & Powertrain
Topic: 1942 K Motor plugs rapidly fouling
Replies: 9
Views: 1819

Re: 1942 K Motor plugs rapidly fouling

I had assumed that the fouling at Donner Lake was the result of the altitude, but after I changed the plugs out and ran the boat the next day at low altitude, the fouling still occurred. Previously, and generally, the engine has ran well, and generally starts with little effort unless it has been a ...
by kmkemper
Tue Aug 04, 2015 1:22 pm
Forum: Engines & Powertrain
Topic: 1942 K Motor plugs rapidly fouling
Replies: 9
Views: 1819

Re: 1942 K Motor plugs rapidly fouling

I am glad that you asked, and I should have been more specific - plugs are black and sooty, dry rather than wet or oily.
by kmkemper
Tue Aug 04, 2015 11:37 am
Forum: Engines & Powertrain
Topic: 1942 K Motor plugs rapidly fouling
Replies: 9
Views: 1819

1942 K Motor plugs rapidly fouling

The last two times I have taken the boat out this summer, the time on the lake has been cut short by the engine running badly. Here's the scenario. A couple of days ago, we had the boat out on Donner Lake (~6,000 elevation) and the boat ran fine for several hours, then gradually started running wors...
by kmkemper
Mon Sep 22, 2014 8:07 pm
Forum: Hardware & Rigging
Topic: 1942 Special Runabout Hull Plates
Replies: 0
Views: 1058

1942 Special Runabout Hull Plates

When we acquired our 1942 17' Special Runabout (17-190), it came with the hull plates loose. There are no holes on the underside of the hatch for me to see where they should so. If someone on the forum has a similar boat, and could post a picture and/or measurements, I would be grateful. It would be...
by kmkemper
Mon Sep 22, 2014 7:39 pm
Forum: Engines & Powertrain
Topic: Shaft Packing '42 Special Runabout
Replies: 7
Views: 2384

Re: Shaft Packing '42 Special Runabout

I was able to fix this leak over the weekend, not without a bit of effort. This involved shortening the rubberized hose coupling by about an inch, which allowed me to slide the packing gland down the shaft and gain clearance to the bottom of the packing nut. Easier said than done, though, since the ...
by kmkemper
Mon Sep 15, 2014 10:06 am
Forum: Engines & Powertrain
Topic: Shaft Packing '42 Special Runabout
Replies: 7
Views: 2384

Re: Shaft Packing '42 Special Runabout

Thanks guys, I appreciate it - I also came to the conclusion that withdrawing the shaft would be the only way to re-pack it - thanks for the advice - are there any tricks to pulling the shaft? Does it simply run through the cutlass bearing without any retainers, etc. once the wired bolt is removed f...
by kmkemper
Sat Sep 13, 2014 4:12 pm
Forum: Engines & Powertrain
Topic: Shaft Packing '42 Special Runabout
Replies: 7
Views: 2384

Shaft Packing '42 Special Runabout

This is my first post, as a new CC owner and new member. My boat is a 1942 17' Special Runabout, which we acquired about a month ago. The boat is in really great, restored condition, but does take in a flow of water at the shaft packing nut, so I am pretty sure that I need to address this by replaci...