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02-22-2017, 10:14 PM | #1 |
Join Date: Feb 2017
Posts: 2
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Hawk 250 Blow By valve question
So I got a used Hawk 250 with only 250 miles on it last October. I've put about 200 on it since then. Lots of mods and updates, new chain, sprockets, Mikune carburetor, tires....
The big question I have is regarding the crankcase blow by valve. The guy I got it from had a PCV on it. (tube from the crank case to the PCV which was mounted, poorly, in the space in front of the rear tire and engine) It came loose and the chain actually rubbed a hole in it over the course of a few rides. I removed it and ran the hose from the crankcase blow by valve to what I believe is the now unused air box under the seat. I can wipe out oil that collects in that reservoir. There is a nozzle there that the original owner plugged up with silicone. I think blow by valves in older cars just spat the excess gas/oil via a tube under the vehicle. (the Mikune carburetor's air intake/filter is outside this box, behind the right side panel. It doesn't untilize that box, if that is what it is for) The big question I have is, what was the original configuration of the blow by valve/venting? Did the original blow by valve have have a tube running out of it? Was there a filter on the end of the tube? I can order parts from a place in Dallas, TX, but I'm not even sure how to refer to it. Thanks for any help. I've enjoyed reading the forum. |
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02-23-2017, 10:29 AM | #2 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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02-23-2017, 12:10 PM | #3 | |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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02-23-2017, 04:18 PM | #4 |
Join Date: Feb 2017
Posts: 2
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So it looks like I could leave it as is for a while. (hose to the airbox) No need for a filter then?
I'll look at putting another PCV canister. Maybe a smaller one I can mount better than the previous one. Maybe stop by the Honda place on the way home from work. I tried looking at the on-line manuals at the Motocheez site. I'll try the one you mentioned. Here's a photo of the one that was on previously. Got to find a better place for it than the first guy. This was after just a couple of rides. Inspect your bike before riding! |
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02-23-2017, 04:50 PM | #5 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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02-23-2017, 07:18 PM | #6 |
Join Date: Dec 2016
Location: Akron OH area
Posts: 103
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tim i believe it was green hawk that did that i started that project but never completed it
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02-24-2017, 09:45 AM | #7 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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02-23-2017, 04:17 PM | #8 | |
Join Date: Nov 2016
Location: robertsdale alabama usa
Posts: 1,007
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1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250 |
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02-23-2017, 08:40 PM | #9 |
Join Date: Jun 2011
Posts: 1,335
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You'll need to filter the crankcase hose. It does pull vacuum and can suck up dirt and water.
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02-23-2017, 09:59 PM | #10 |
Join Date: Nov 2016
Location: robertsdale alabama usa
Posts: 1,007
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this was the link http://www.chinariders.net/showthread.php?t=18122
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1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250 |
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