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Message |
    
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 671
Registered: 06-2008
| | Posted on Monday, July 06, 2009 - 03:15 pm: | 
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Anyone done this successfully??? Friend of mine doing this (replacing original log style manifolds/elbows with OSCO center rise). From looking at the water flow diagram of this system, it appears as if one can just:
1) remove the "T" in the raw water line that feeds the pressure relief valves.
2) Plumb the engine just the way it was (out of circulator pump, into back of exhaust manifolds and out of top of manifold (front) port into block)...and
3) use the standard "partial block" gasket between the centerrise manifolds and the exhaust elbows.
4) Run lines from the two ports on the T'stat housing to each of the elbows. |
makomark
Advanced Member
Username: makomark
Post Number: 906
Registered: 09-2008
| | Posted on Sunday, July 19, 2009 - 08:50 am: |
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Robert
The other item is that the elbow-hose connection moves forward, too. You'll need a hose stretcher, or new hose to fill the void. I'd avoid a straight splice in that area. |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 728
Registered: 06-2008
| | Posted on Sunday, July 19, 2009 - 02:04 pm: |
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Where we are with this so far...
1) Replaced all the hoses (except the circ pump to tstat housing one) with new hoses.
2) The lines from the circ pump to the back of the manifolds has an approx 2 ft run of 1" copper tubing (with sweat elbows) as it runs past the manifold exhaust ports (w/support clamps).
3)The line from the block to the top/front of the manifold was moved to the port on the front bottom of the manifold (top front port now blocked).
On-hose tests now OK... launching early next week. If all goes Ok, will post photo. |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 817
Registered: 06-2008
| | Posted on Friday, August 14, 2009 - 04:55 pm: |
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Runs fine...no overheating. Successful conversion. |
william korinek
New member
Username: clamhead711
Post Number: 2
Registered: 12-2007
| | Posted on Friday, October 16, 2009 - 03:21 pm: |
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Can you post a picture? |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 953
Registered: 06-2008
| | Posted on Sunday, October 18, 2009 - 03:53 pm: |
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No, as I no longer have access to the boat. It belonged to a friend who has since moved out of the area. However, I do have a pdf of a document showing how to do it if you are interested. ( diagram and materials list) |
william korinek
New member
Username: clamhead711
Post Number: 3
Registered: 12-2007
| | Posted on Tuesday, October 20, 2009 - 09:13 am: |
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Yes that would help me out as I am a bit confused-Thanks for your help |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 964
Registered: 06-2008
| | Posted on Tuesday, October 20, 2009 - 03:44 pm: |
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You should have it in an email by now.
Let me know if you can't open the file/ |
Ricardo E.
Advanced Member
Username: ricardomarine_vp
Post Number: 756
Registered: 03-2009
| | Posted on Sunday, November 08, 2009 - 08:17 am: |
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Quote: (replacing original log style manifolds/elbows with OSCO center rise)
This tells me that we are discussing a V-8... correct?
SBC????
SBF???
Raw water cooled???
Robert, just an FYI more than anything here..... but when going from a log style manifold to a centerise type, you can eliminate a few of the hoses if you wanted to, simplifying the system.
The center rise style can be singly fed using the man-to-riser feed via the ports between the two (depending on the raw water system T stat housing type)
Or....
you can feed the FWD ports of the manifolds and come out the rear to then feed the risers..... but best to use the "restrictor" type gaskets in this case! (as described in your # 3)
Don't know if this is of any value to you guys, but it can be done..... been there/done this!
Your # 2 has me somewhat puzzled. (let me preface this one: we have a "sea water pump".... and we have an engine "Circ" pump!)
Can you explain why you would take a hose from the engine "Circ" pump to anything but the engine block water jackets or a WH or Cabin Heater "return"?
No dog in any fight here..... just curious!
I too would like to see a schematic of what has been done.
Again, just curious!
. |
Ricardo E.
Advanced Member
Username: ricardomarine_vp
Post Number: 758
Registered: 03-2009
| | Posted on Sunday, November 08, 2009 - 10:22 am: |
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FYI, page 14 explains, in part, the Thermocon-develco system.
http://www.all-about-houseboats.com/support-files/chris-craft-houseboat-manual.p df |
Robert A. Fierro
Advanced Member
Username: sandkicker
Post Number: 968
Registered: 06-2008
| | Posted on Monday, November 09, 2009 - 12:06 pm: |
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Rick...
Its a Raw water cooled SBC.. I'll email you the diagram in a day or so. The computer that the file is on has some "issues". BTW... This conversion has been installed and running for several months without any issues. If I had to do it again, I'd install drain petcocks at the rear of the manifolds, i.e replace the copper elbows with T's w/plugs. |
