Tgb 101s

[baywatch7737]

Alright guys, I finally did it. I tore my tgb down I'm looking at case halves. Tomorrow I'm gonna start with putting this new crankshaft in with the bearings and seals. First question is: when I pulled it apart in between two of the oils seals, just under the oil pump hole it looked like it had grease in it. It was real good and gray but I'm not 100percent sure what it was? Do I need to put some grease in between those oil seals as I'm installing the new crank?

Second question is: is there a trick or certain way to install these oil seals? The old ones just popped out but do the new ones just pop in?

Third question is for the guys who put new crankshaft in the motors: my stock crank has a 18/24/14 spacer on the cvt side new one did not come with one on there. I see on the parts diagram on peirspeed.com where it's definitely on there. Of course I can't seem to get the spacer off of my old crank. I tried heat gun but no luck. I'm hoping the machine shop I'm taking my gears to tomorrow will be able to help.

You fellas have been a huge help so far and I'm so close, thanks in advance

[gsx600racer]

Jul 23, 2017 18:52:57 GMT -5 baywatch7737 said:

Alright guys, I finally did it. I tore my tgb down I'm looking at case halves. Tomorrow I'm gonna start with putting this new crankshaft in with the bearings and seals. First question is: when I pulled it apart in between two of the oils seals, just under the oil pump hole it looked like it had grease in it. It was real good and gray but I'm not 100percent sure what it was? Do I need to put some grease in between those oil seals as I'm installing the new crank?

Second question is: is there a trick or certain way to install these oil seals? The old ones just popped out but do the new ones just pop in?

Third question is for the guys who put new crankshaft in the motors: my stock crank has a 18/24/14 spacer on the cvt side new one did not come with one on there. I see on the parts diagram on peirspeed.com where it's definitely on there. Of course I can't seem to get the spacer off of my old crank. I tried heat gun but no luck. I'm hoping the machine shop I'm taking my gears to tomorrow will be able to help.

You fellas have been a huge help so far and I'm so close, thanks in advance

If you plan on reusing the oil injection pump, then re-greasing is a good idea. If you plan on going to premix, remove all the grease and plug the hole where the oil pump went. I used a wine bottle cork, it fit tight.

As for the out seals, you need to make sure that they go in perpendicular to the hole. If they are crooked, they will prematurely wear out and leak. Some also use a RTV sealer when installing them, I don't.(my preference) Also make sure you use grease after they are installed on the seal lips when you reassemble the case halves.  

As for the rest, take some pictures and share them here, not sure of the spacer you are talking about.(unless its the drive boss) 

[baywatch7737]

What is this rtv sealer I've heard about? Ok I'm planning on going back to oil injection, so I should just grease in between those 2 oil seals on that side?

You mentioned greasing the seal lips on the case halves, what are those.

I got some of the ultra black gasket maker for in between the case halves but not sure about the grease, do I need to get a grease gun or can I just use my fingers?

As for the spacer I'm talking about, it is pressed on the cvt end of the crank. So I'm gonna ask the shop that's pressing my gears if they can get it off.

[gsx600racer]

This vid talks about the seals and installing them.



For the case halves, I use Honda Bond 4. There is also Threebond 1184 & Yamabond # and others.
Don't use ultra black for case halves.

That spacer should slide off. Penetrating oil and some heat might loosen it up.

If it was me, Id switch to premix. There were some issues with the oil injection system as well as some other stuff on the 2 stroke models. link

[baywatch7737]

Hey thanks man that tech bulletin was great, I'll check my bike and parts to see if I need to replace any.

I am worried about the premix, but if it really is going to be guaranteed better for my engine? I'll do it. I'll have to check a few things but I'm pretty sure I have the newer type intake on mine with no nozzles for oil so that won't be a problem but I am worried about blocking off that hole, I might be able to have a buddy make me something.

I think I'll leave the oil tank on and get some kind of valve to fill something with at the gas pump. What do you guys think?

What's this Honda stuff? Shoot I thought this permatex gasket maker the oil resistant kind was gonna be fine for the cases. What makes this other stuff better, I'm not asking to be a pain I promise.

[Jwhood]

Yamabond,hondabond,three bond 1184 is the best to seal case halves with less chance of having a leak,also don't go crazy heavy with the sealant more is not always good

[baywatch7737]

Alright, got some yamabond today. A buddy of mine got the spacer I was talking about off the old crank and I'm able to reuse it. I got my crankshaft in the freezer for the night hopefully I can slide the bearings on it tomorrow afternoon. What do you think of keeping the oil tank on there? I could install a on off valve with a short hose and when I need to premix at the pump it will be easy?

I looked at my intake today and I have the old style intake shown on that tech bulletin. Does anyone have a the intake without the oil fittings on it that I could buy?

[gsx600racer]

What makes this other stuff better

I don't know, I just use it. LOL
My guess is that it does not cure hard and stays flexible.

I am worried about the premix, but if it really is going to be guaranteed better for my engine

If your fuel pump fails, oil lines crack or fail, or your low oil light or float fails, there is no warning and your engine will be running without lubrication.

I could install a on off valve with a short hose and when I need to premix at the pump it will be easy?

My concerns would be keeping the hose(& shutoff)clean of dirt and debris. Iv thought of this as well but I think its more of a hassle than a convenience.(waiting at a pump while 3+ ounces of oil pay out into a container from a small house to pour into the gas tank)

I keep a bottle with enough oil for 1 gallon of fuel. I run 32-36 to 1 ratio. Depending the oil type and quality would would be my determining factor for ratio.

As for the intake, If you are premixing just block off the fittings.
If you keeping the oil injection, I think this is the one.
www.ebay.com/itm/NEW-TGB-Scooter-Intake-Valve-Assembly-for-Laser-303-303r-R5i-Sunset-50cc-420001A-/161752246193

I would contact the seller to make sure.

I think deal with the old intake was it was lubing the crank bearings and not much oil was making it to the rod bearing and they were burning up crankshafts.(connecting rod big end bearing failing) Just another reason to premix. LOL

Good to here you are making progress. Just take your time.

[baywatch7737]

Right on man, that looks like the one. I gotta double check the bolt pattern when I get home. Is the stock tgb oil pump adjustable?

I will be using the yamalube oil, not the racing kind. They said it was ok for either injection or premix. What should my ratio be? A buddy of mine is gonna make me a blank for my oil pump.

I'm going to be trying to put the bearings on the crank when I get home today. I had the crankshaft in the freezer all night. After that I'll do the cases.

One of you guys mentioned if I'm blanking the oil pump that I don't have to pack grease in between the two oil seals?

[pinkscoot]

I checked with Pierspeed and he said this should work on my 2007 R50X. I think that all of the models use the same engine so this should fit on yours. If you are removing the injection you can stay with the old one, just be sure to cap the oil pump hole and plug where the oil hoses go into the intake.

[Jwhood]

I just pulled the nipple out the the old intake and JB welded it shut...problem solved

[Elektrey]

I took some fuel line, cut off like 1/2" length, shoved a BB in the end of it and put the other end on the oil pump nipple.

[gsx600racer]

I will be using the yamalube oil, not the racing kind. They said it was ok for either injection or premix. What should my ratio be? A buddy of mine is gonna make me a blank for my oil pump.

Id start at 32:1 to be safe. You can dial it back if its really smokey(40:1). Also consider upjetting the carb. The more oil you use there is technically less gas which can result in a lean condition and more heat.

One of you guys mentioned if I'm blanking the oil pump that I don't have to pack grease in between the two oil seals?

You don't need to re-grease but I would remove the plastic drive gear and plug the hole. Like I did here.
49ccscoot.proboards.com/thread/17416/tgb-r50x-2006-project-rebirth

[AtariGuy]

Use a quality oil at all times. Walmart brand synthetic doesn't count. There was a recent conversation about the use and benefit of the amsoil dominator 2 stroke oil (can run that at 40:1 and seems to keep the engine slightly cooler.) So a racing oil isn't necessarily a bad thing on a fun machine either.

Your intake has the injector nipple, many stock minarellis locate on the carb nearer the intake side, either way it just needs to be blocked off. I picked up a pack of vacuum plugs from the local auto store, the multi-pack should have a small one that fits the nipple. I put some permatex ultra gray (same difference as your yamabond 3) around the nipple and popped the plug on it. It aint going anywhere.

Also, if you decide to carry any sizable quantity of oil with you, get a dedicated measuring device. I repurposed a meat injector syringe as mine. I also added an 8" length of tyvex fuel line to the end of the syringe, then scrubbed the factory measures off and scribed it with 40:1 marks for every tenth of a gallon. That way if i fill 1.4 gallons, i can pull the plunger up to the 1.4 mark and i have a perfect measure every time.

[baywatch7737]

I'll keep that in mind about the amsoil and other racing oils. I already bought two quarts of yamalube. It's definitely an upgrade of what I was using before, which was tcw3 from Wally world.