maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 16:43:49 GMT -5
ok, drawkward, i didnt have any tape atm, i used a small peice of cardboard and covered the air inlet about half way and it ran fine, get it almost completely covered and it bogs out and shuts off. still hoping to get an answer to the head gasket part, if i dont need a torque wrench and its only a few bolts and not hard, i can do the gasket in a tube kinda thing to it today.
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Post by 2strokd on Jul 20, 2011 16:54:09 GMT -5
Hard to tell but it sounds rich and bogging when WOT because that is he richest point. What main is in it, do you know? Try removing the snorkel in the airbox. The tube that sticks out of the top. If its out already, put it back in and try it.
As far as the head goes, dont bother with a gasket.Put some rtv sealant on it in a very light coat. Let it 'set up' for a few minutes then torque the head down in a crisscross pattern slowly to 10-15flb. I do many sequences when crisscrossing and tightening my top-ends. By sequence i mean i turn the socket just a tad the go in to the next stud, just a tad , then the next, and so on. You need to tighten it as even as possible.
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 17:03:50 GMT -5
i have no idea on any size jet in the thing, BUT, with the snorkle on and the engine cool, once warm it starts to hesitate and surge and i top out at about 32 into the wind,,,, i took the snorkle off and started out cool, once warm it starts to hesitate and surge into the wind at about 37 instead of 32.
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 17:07:35 GMT -5
ok im gonna say this, PLEASE correct me if im wrong, i gotta take off the plastic covers around the head and the fan, remove the spark plug, there should be 4 bolts to remove and the head will come off. clean the old gasket off and put rtv sealant on it and then tighten them down in a crisscross pattern evenly, problem is i dont have a torque wrench, should i use german engineering? GOODDNTIGHT
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Post by drawkward on Jul 20, 2011 18:15:23 GMT -5
I don't own a torque wrench. I've removed heads plenty of times. As long as you don't over tighten them and strip something you should be good.
Remove the head. Use brake cleaner or gas with a scotch brite pad (the rough scraping part of the back of a sponge is like the same thing if you don't have any scrub pads) to clean the head. You can clean the gasket and reuse with a sealant, but I wouldn't just use any old RTV. The only RTV I use on the head gasket, if I must use RTV, is the Copper stuff. What I do to reuse my head gaskets (and if I can, I do it on new headgaskets too) is Copper Spray. Two light coats of copper spray (make sure it is a light coat, you don't want it to bead up on the gasket) on both sides. Let it dry for a bit so you can handle without wiping it off. I don't reuse base gaskets. If I don't have spares (which I try to keep now, since I can get a pack of 5 from Carlos [Autotech355] for $5), I cut my own base gaskets from gasket paper. Autozone carries Felpro gasket paper (looks like cardboard) in a roll right next to the sealants and RTV. I use an Xacto Knife to cut them out using the old gasket as a template.
When torquing down the head bolts I hold the wrench near the top (where I have the least leverage) and tighten down as much as I can while being careful. Even with little leverage some people are stronger than others and can strip them.
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 18:23:20 GMT -5
how longs it take to do this job?
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 18:26:03 GMT -5
forgot to ask, if all im doing is the head gasket, thats nothing to do with the base gasket right?
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Post by 2strokd on Jul 20, 2011 19:10:20 GMT -5
Dont even worry about pulling the head if you dont need to for anything else? I thought for some reason you needed to take it off...If not just leave it alone for now. Its not the problem and the gains without the head gasket arent that much.
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 19:14:18 GMT -5
ok well, i got all the stuff to do it except for the gasket, i got carb cleaner,scrotch birght pads and shop towels. its running a bit better with the snorkle off of the air box, im gonna take all the plastics off by the head to see if my gasket is leaking or anything like that and check it out, what else should i try well im under the thing?
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 19:18:29 GMT -5
oo and as far as a filter, will a 1/4 inch free flow work?
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 19:54:57 GMT -5
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Post by drawkward on Jul 20, 2011 19:58:51 GMT -5
Yes, as Robert said, and I mentioned (maybe in the other thread), do the head gasket only if it is leaking and is your problem. Don't do it for no reason, especially if you don't have the proper equipment. To take the shroud off, you have three bolts on the fan side. Should be either #3 Phillips, 10mm, or 8mm socket. It depends on the manufacturer and quality. Two of the bolts go into the case. One bolt is located bottom left, the other is top right. The last one is actually a screw that goes from the fan cover shroud into the cylinder shroud. It should be to the right of the upper bolt from the fan shroud. The third one is long. You can pull the shroud off without taking the carb out of the rubber intake boot, but you need to do some twisting and pulling. It makes it easier if you remove the carb from the intake, and remove the spark plug. If I were you, since you already have oil everywhere, I would clean it all up, if you couldn't tell where the oil was coming from, and then after it was clean I would start it up for a bit without the fan covers on. Not too long, as it will warm up fast. Look for oil leaks around the head and base. This will tell you if you have leaks.
Thats how I check my cylinder gaskets - or one way atleast.
I'm thinking the shop put a bigger jet in, since it runs better with the snorkel out. A tuning tip that I haven't heard mentioned in a while, and I stand by, is to drill a few holes on the engine side of the air box; somewhere you can reach them without too much trouble. Tape all of the holes up, then remove the tape from one hole. Ride, test. Repeat. If it gets better, then you are running rich. You can tune your carb without changing main jets by doing this trick. But, it will make it so you have to richen up your mix screw (turn in a bit), since your letting more air in.
You can try the filter, but likely it will let too much air in and you'll bog at any throttle level.
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Post by MAReames on Jul 20, 2011 20:01:02 GMT -5
Looks to me you have a leaking head gasket also. I would get a new one and replace that oil pump.
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Post by drawkward on Jul 20, 2011 20:01:09 GMT -5
Go premix all the way. Don't worry about ruining your pump, they aren't too expensive. Disconnect the pump, clean it up, and premix.
Can you get a shot of where the head meets the cylinder, like where we can see inside the fins more? More of a direct side shot instead of an angle. I cant tell if thats just from the pump.
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maccrew
Scoot Enthusiast
Custom painted f-act
Posts: 193
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Post by maccrew on Jul 20, 2011 20:36:36 GMT -5
ok update, i had to put it all back together as to losing daylight and i work soon, the stuff on the head isnt really wet, its kinda older but it is in between the fins and up where the head connects, i can see that the head did come somewhat seperate at one time, there are a few cleaner spots of goldish looking metal and dirty right next to it. it was running great after i got it back together until it warmed up and it started to hesitate while wot and surging back and forth, is it normal for the exhaust to get SO hot that you cant get within 2 feet without feeling like its burning you, it was so hot the black spray paint i painted it with was turning white. ok explain as easy as possible to go premix, and will the 1/4 inch free flow fuel filter work?
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