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Search: Posts Made By: Concord
Forum: Troubleshooting 04-28-2014, 02:25 PM
Replies: 3
Views: 4,521
Posted By Concord
Impeller

Yes we have an Oberdorfer pump (MMI Product No. - CSOB_02_63) and have used/replaced the same impeller for years. They compared the two side by sideand the new impeller was identical to the old one. ...
Forum: Troubleshooting 04-28-2014, 09:48 AM
Replies: 3
Views: 4,521
Posted By Concord
Water Pump issue

Looking for input on our water pump/impeller, my friend was commissioning our 1978 A4 and everything went well except the water pump was not drawing water. They spent some time trouble shooting and...
Forum: Troubleshooting 12-18-2013, 04:39 PM
Replies: 11
Views: 15,015
Posted By Concord
Thanks for the input, it is kind of ironic...

Thanks for the input, it is kind of ironic because in 20 years this is the first surveyor I found that actually wants to do a compression test.

We are selling the boat and I want the new owner to...
Forum: Troubleshooting 12-18-2013, 03:54 PM
Replies: 11
Views: 15,015
Posted By Concord
Compression Test

Our engine is winterized and a surveyor would like to do a compression test of the system and is proposing to run the engine for approximately 60 seconds to heat the motor up for the test with no...
Forum: Drive Train / Propellers 05-23-2012, 06:43 AM
Replies: 13
Views: 4,193
Posted By Concord
Prop Repair

I am surprised the nut could go over the threads unless they are completely gone. It seems more likely that the lock nuts got loose and backed off. Before trying to cut new threads I would get a new...
Forum: Drive Train / Propellers 06-05-2011, 11:17 AM
Replies: 11
Views: 3,252
Posted By Concord
2 cents

I had a Martec folding prop on my last boat. It was not geared so it would not close automatically. I sailed in freshwater with strong current so I would clean the bottom most weeks and while...
Forum: Drive Train / Propellers 05-30-2011, 04:31 PM
Replies: 19
Views: 17,346
Posted By Concord
New Indigo

I put on an Indigo SS 3 blade prop and launched last Friday. Thus far I am very happy with the new prop. The engine revs a little higher but the power is a lot smoother.

There was always vibration...
Forum: Overhaul 04-25-2011, 08:35 PM
Replies: 5
Views: 2,821
Posted By Concord
Thanks

I think that is a good way to go, I just don't have a shop yet.

The engine was locked up when I got it and I am pretty sure I will need new pistons and rings. It looks like the jacket clogged and...
Forum: Overhaul 04-25-2011, 10:10 AM
Replies: 5
Views: 2,821
Posted By Concord
Machining Costs

I am contemplating my rebuild and I am trying to figure out what to do.

Can anyone give me a rough estimate of what the following machine shop costs should run:

Hot tank engine parts
Bore...
Forum: Overhaul 09-22-2010, 07:15 PM
Replies: 34
Views: 9,057
Posted By Concord
Progress

Little progress lately, busy with other stuff. I hope to get back to it soon.
Forum: Overhaul 09-22-2010, 10:24 AM
Replies: 34
Views: 9,057
Posted By Concord
Valve guide removal

Looking for advice onthe the best way to remove the valve guides, valves and the cam are out. Is it as simple as tapping them out from the top?
Forum: Overhaul 09-21-2010, 11:19 PM
Replies: 34
Views: 9,057
Posted By Concord
Don't go overboard

Life is dangerous, but lets not go overboard. A 4% increase in Oxygen content also makes Hydrocarbon oils very dangerous.

If you watch some of the projects on youtube you will see the rust removal...
Forum: Overhaul 09-21-2010, 11:01 AM
Replies: 34
Views: 9,057
Posted By Concord
Electrostatic Cleaning

Sorry for the delay responding, the post fell off the active list and I did not notice the last message.

It is actually a really cool method for removing rust and it is really easy to do.
...
Forum: For Sale - Engines and Engine Parts 09-10-2010, 09:14 AM
Replies: 5
Views: 3,272
Posted By Concord
ebay

There is a nice looking A4 on ebay also
Forum: Overhaul 08-28-2010, 06:01 PM
Replies: 13
Views: 7,082
Posted By Concord
Similarities

The carb, fuel pump and filter look identical to my 1960's A4. I would bet the exhaust header is the same also.

Pretty cool - good luck!
Forum: Overhaul 08-28-2010, 05:34 PM
Replies: 13
Views: 7,082
Posted By Concord
Similarities

The carb, fuel pump and filter look identical to my 1960's A4. I would bet the exhaust header is the same also.

Pretty cool - good luck!
Forum: General Interest 08-28-2010, 05:22 PM
Replies: 12
Views: 4,168
Posted By Concord
Sea cock?

Looks like a nice water intake but where is your shutoff?
Forum: General Interest 08-28-2010, 05:19 PM
Replies: 6
Views: 4,716
Posted By Concord
Drill Bit

Have you looked around to see if you can rent a mag drill? In my last job we did a lot of field erecting of equipment and my service guys were pretty successful at renting that stuff locally in some...
Forum: Drive Train / Propellers 08-20-2010, 04:03 PM
Replies: 6
Views: 4,966
Posted By Concord
Prop fouling

Sorry one other thing - the prop effeciency falls apart when flow separates from the blades which is why the barnacles are wreaking havoc. I sail in fresh water but had a similar issue recently. The...
Forum: Drive Train / Propellers 08-20-2010, 03:58 PM
Replies: 6
Views: 4,966
Posted By Concord
Prop size

OK so this is what I learned about propeller sizing.

The basic parameters on a propeller are the diameter and the pitch. the surface area of the blade is generally related to size of the prop....
Forum: Overhaul 08-15-2010, 06:48 PM
Replies: 34
Views: 9,057
Posted By Concord
Progress

Spent the day on the water yesterday and decided to try getting the studs out of the head today. I used a 14" pipe wrench and they all came out without breaking any. Still have not found a place to...
Forum: Overhaul 08-13-2010, 01:36 PM
Replies: 11
Views: 5,905
Posted By Concord
I am working through similar issues with my A4...

I am working through similar issues with my A4 (See link below)

What I have found:
1. valve step is snapped off ( its possible one of my wooden shims did this when removing the head ) ? I don't...
Forum: Overhaul 08-09-2010, 08:58 AM
Replies: 34
Views: 9,057
Posted By Concord
Good weekend

I found time to do a little work this weekend between replacing the hot water heater in the house and helping my brother move.

Cam shaft came out pretty easy and all the intake lifters dropped...
Forum: Overhaul 08-05-2010, 10:17 AM
Replies: 1
Views: 3,453
Posted By Concord
Hot Tank Engine Cleaning

I would like to get my block hot tanked, anyone know a source in the Philadelphia area?
Forum: Overhaul 08-05-2010, 09:50 AM
Replies: 34
Views: 9,057
Posted By Concord
Valves are out

I got my valve spring compressor from MMI yesterday and was able to pull the valves last night. Intake valves came up pretty easy. Exhaust valves took some work. Exhaust lifters are a sticky also,...
Showing results 1 to 25 of 70

 
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