Hose Connection

Thank yo again John. I hope you do not get a cold due to the visit to your cold garage. :)
So, my conclusion is that the whoever did a job before wrongly connected the carbs drainage to the crankcase breather and did not connect the air filter with the breather. The following picture shows in a yellow circle the cranks breather nipple location location we are speaking. Does not look like a water pump. Sorry to ask more details, but I want to do a good restoration. Do you agree that this is the cranks breather?IMG_4441.jpg
 
Martin Schneuer said:
Do you agree that this is the cranks breather?
Click to expand...

Yes, Martin, it is.

I will look in my archives to see if I have a picture of the front of someones 92-02 engine showing the water pump housing (any photos that I’ve taken are of my 1991 with the external crankcase breather).

Sorry that someone has messed with your ST1100 like that. The official Honda Service Manual has excellent schematics/line drawings of hoses, cables, and wiring routing that can be quite helpful.

John
 
OK, found some pictures that should help. This shows the hole in the crankcase for the breather chamber (internal). Just to the left of the port, and straight above it, you can see the hose leading into the engine V.

water pump enginet-jschneider.jpg

This image shows the back of the water pump. When installed, the port in the pump housing seals with an o-ring against the port in the crankcase shown in the above picture. The crankcase breather hose connects to the nipple at the bottom right in the picture.

water pump backt-jschneider.jpg

Original pictures from my friend, Jeff Schneider; annotations by me. I should probably put all my water pump pictures in my ST-R gallery.

John
 
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John, I really appreciate your help and tremendous ST1100 knowledge.
Now I will start disassembling the carbs. I hope I will not find serious problems since the motor was running.
I have the Honda Service Manual, but the version I got is not really clear for a 1st time carb rebuilt.
I found in the st-riders.net forum an article written by KoTAOW about the Carb Removal and Rebuilt that has being very helpful (see http://www.st-riders.net/index.php?topic=10249.0)
I have a doubt about the rubber engine heat guard, but being this topic the carb hoses, I will initiate a new post.
After the carbs I will continue with the wheels, brakes, timing belt, and miscellaneous.
The alternator is charging and the water pump working.
Being the bike disassembled, you recommend me to take a look to something else?
After all that activities I will import all the required spares and will start the assembly of the bike.
 
I disassembled the carbs, cleaned everything, leveled the floats and now waiting for some spares.
Everything clear now regarding the hose connections.
Happy end of this story.
Thank you to everybody who contributed to all my doubts.
Merry Christmas.
 
Hello everybody.
I took off the carbs, cleaned everything and reassembled. Motor is running smooth.
Regarding the hoses, Cylinder 2 and 4 vacuum hoses joints in a T and connects to the fuel cut-off valve.My bike does not have PAIR system.
As said by John, the crankcase breather hose runs from the right front of the engine (nipple on the lower right edge of water pump housing) up and into the V of the engine to the nipple on the bottom right side of the air cleaner housing.
The individual carb float bowl hoses connect to the 5-port drain hose manifold leads straight out the rear of the engine V to a butt connector to a hose extension that drops down to the left sideI
I cut the mat with a pdf published drawing. Made it in 2 layers. First layer made from oven silicone that resist 180 Celcius degree and a second layer of Nitrile rubber that resist 165 Celcius degree. Dwalb measured the temp with laser temp gun and thermocouples. Máximum temp was 120 Celcius.
Thank you very much for all forum members for your help, comments and pictures that guided to a successfull job.
Only pending job is tho performed the idle drop. I assembled the idle mixture screw with 2 1/4 turns from lightly seated and then synchronized the carbs. I need to fabricate the special tool to do the correct idle mixture job. If somebody has done it, your help with an explanation and pictures will be appreciated.
Best Regards,
Martin Schneuer
 
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