03-17-2009, 07:12 PM #1
first ride finally...and a couple issues. pics inside
so, i went out saturday. ran good but i have a few questions. since my wear ring shot out of the pump while flushing the motor i took the pump off tonight. ordered a new one and i am also going to replace the neoprin (sp) seal. no biggie. i kinda knew that wear ring was soon on its way out.
here are my questions.
i noticed the freshly rebuilt PTO side rave valve was leaking (i rebuild both raves btw, not just the one). i took it off the motor and found water in the housing...why? while i had the head off looking at a couple things i noticed the orings werent exactly great. i had to shrink them in the freezer to get them back into place. so i ordered an oring kit along with the wear ring today. would that cause water in there for some reason? when looking through the rave hole in the cylinder, the sides of the pistons arent too pretty. there are some dark brown/black spots, and some scores. water intrusion? i guess as long as i have compression, dont mess with it?
also noticed i still have that lean hesitation with two full turns out of the low screw, so i order the 77.5 jets. hopefully i can fix that issue now.
also, one thing that concerned me is the proks kept falling off. i knew every time cause the ski would loose RPM. i finally got them to stay on but i wanted to post some pictures of an open holes in the adapters and see what you guys thought. there is maybe only 1/4 inch of room that the filter actually holds onto the adapter. there are 2 of those holes on each adapter.
and one thing i found kinda funny. when the motor was hot, compression was 152ish. today, cold, 160ish. same gauge used.
any insight would be appreciated.
03-17-2009, 08:37 PM #2
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You look to have the wrong Proks for the adapters. They should be smooth inside with those, if it has a bead inside then they are wrong. Plus, they should be bottomed against the flange, and not where they currently are.
You have water getting in, but if you didn't pinch the orings, it is probably somewhere else. Like the headpipe gasket?
Can you manually focus a shot of the scoring through the RAVE slot? Would like to see how bad.
Shoot a pic of the stem of the RAVE too, and you might need green bellows.
03-17-2009, 09:37 PM #3
thats excatly what i was afraid of with the proks. dude sold them to me as a package. can i shave out the bead with a dremel? are the correct adapter for these shorter? if they are the same height as these there wont be much room for air to go through. can you point me in the right direction for the correct adapters or maybe the correct filter if i cant dremel it out?
here is shot of the rave stem and the best i can get through the rave slot.
03-17-2009, 09:38 PM #4
sorry if half (probably most) of those shots are useless.
03-17-2009, 10:01 PM #5
Id pull the head and see what the cylinder walls look like. the pistons look kinda scored.
03-17-2009, 10:50 PM #6
i know for a fact the cylinder walls and pistons are scored. but i have 160 lbs of compression cold and 150 hot. if it aint broke dont fix it?
03-18-2009, 05:37 AM #7
run it till it goes. one cylinder seems close to going tho
03-18-2009, 07:46 AM #8
unfortunately you are probably right. i have seen some scored motors last a long time though. hopefully this is one of them. i guess if i end up having to do a top end soon its not the end of the world. i just hope i can through this season first. oh well, that will give me a chance to paint the motor too.
the one thing that scares me is the water ingestion. i have to figure that out. anyplace else you think besides the headpipe gasket? and shouldnt the rave housing be sealed anyway with the oring? meaning no water should have been able to get into the housing?
i will pull the head off when i get a chance over the next couple day and throw pics up.
03-19-2009, 07:49 PM #9
well, here are some pictures of the cylinders. they arent pretty but they're smooth. the walls arent scored like i though they were. the pistons are ugly though. i guess i will just run it till it goes. i just want to find the water issue. the oil you see is fogging fluid. i sprayed down the cylinder walls since the head will be off for a few days.
i got a head oring kit. hopefully that will solve my water in rave housing issue. the old ones dont convince me as far sealing properly. for water to get there, where else would be possible besides the headpipe gasket? the jug is not cracked. the head is not cracked and doesnt seem to be warped.
can anyone tell which are the appropriate adapters for my proks? or if i can just shave the lip inside the filter?
03-20-2009, 04:57 AM #10
those are the type of proks you need the ones you have are for a 951
The ones in the link should fit the adapters you have already and will slide all the way down and stay on.I had a set on my 96xp and had no problems at all with them staying on
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