How to Install Oil Pump Block Off Kit for Polaris Trail Blazer 250 ATV

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9 жыл бұрын

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2000 Polaris Trail Blazer 250 Oil injection Block off kit installation.
A hasty demonstration using an oil injection block off kit and single pull throttle cable modification, to maintain reliability and economy on an overhauled engine. The idea is still in the process of being tested, as this is the 3rd Polaris oil injection block off kit install performed with no complaint for engine failure. The Polaris engine lubrication concept varies drastically than its competitor, the Japanese manufactures, which suggest in the service manual to mix oil and gasoline to a specified ratio. In reference to any of the related 2-cycle engine ATV, jet skies, and snowmobiles manufactured by Polaris, they call for specific procedures which use oil injection due to cylinder and engine casing design. This method of oil deliver starts from an oil injector nozzle located in the intake pipe. Some oil will atomize with the gasoline located in the transfer ports. The remaining oil moves through cylinder porting eventually finding its way to an oil hole port dedicated to the main crankshaft bearings.

Пікірлер: 105

@eagleguy007 2 жыл бұрын

BLOCK OFF KITS WHERE USED BY Pwc races for years. And are still used today

@ProlificInvention 6 жыл бұрын

Thank you, great video! just what I needed.

@ProlificInvention 2 жыл бұрын

Dang, 4 years later 😆 I'm still rocking that quad every winter and working on it occasionally...

@jeffcatt4997 2 жыл бұрын

Be nice to hear you

@ratsalad724 5 жыл бұрын

After you install everything like you did in the video do you have to cap any lines or anything. How about where the oil pump line feeds into the engine?

@tjharmon6360 3 жыл бұрын

Polaris oil pumps are damn near bulletproof. maintain the cable/line and I've never seen one fail

@QuantumMotorWorks 3 жыл бұрын

I would agree for the most part, at least on the older manufacturer Polaris'. I believe the issue is that most older model polaris owners dont know there is a gear drive oil for the oil pump and water pump. Its 100ml from the factory, and most people never replace it. If you get any leak in that area, you run those drives and pumps dry, which leads to failure.

@ernestgagnon8966 6 жыл бұрын

Can anyone show me the layout of fuel lines from the carberator on a 1996 polaris trail blazer 250 2x4 2stroke I'm reduing the lines and have nothing to go by

@bradb9146 9 жыл бұрын

After you do this , what fuel to oil mixture should you be using ?? I'm very interested in installing this on my 2000 polaris xplorer 250 4x4 . After I get my cylender back from being bored out by summit off-road .

@QuantumMotorWorks 8 жыл бұрын

+brad b sorry for the late reply. I installed a brand new top end, so for piston/ ring break-in, I mix the oil between 20:1 to 32:1. After break in, I was using 32:1 to 40:1.You probably already know that the engine contains no internal oil, and relies on the oil injector pump to bleed oil into crankcase for crankshaft bearing lubrication. I recommend running a 32:1 mixture to avoid overheating, seizing, and crank bearing failure, although a 40:1 mixture ratio may produce more power or it may be a better mixture depending on engine modifications, i.e. high flow air filter, high flow exhaust, reed valves, etc.

@bradb9146 8 жыл бұрын

Thanks : ) I'll be getting a fresh bore and piston because of oil pump failure . : ( I hope after I do this mod , it will not happen again . I'm going for the wiseco piston and I've seen the oil pump bypass on ritter cycle racing with the single throttle cable for 62 doll hairs .

@QuantumMotorWorks 8 жыл бұрын

+brad b hook it up and let me know what happens. future reference

@jenrizar660 2 жыл бұрын

Question brother I’m new into this 2 stroke engines once you install the plate how you deal with the hoses from the oil pump thanks man

@orbaso9819 2 жыл бұрын

You take off the oil tank and Hoses and block off the oil port on the carburetor

@jenrizar660 2 жыл бұрын

@@orbaso9819 and that’s it brother 😳?

@QuantumMotorWorks 2 жыл бұрын

You can leave your oil tank if you want, drain it, remove lines, and cap it. The more important thing is to make sure your intake port oil nipple is blocked off, so you don't have an air leak. That's pretty much it.

@jenrizar660 2 жыл бұрын

@@QuantumMotorWorks thank you so much 👍🏻🫡

@mickeymouse101101 5 жыл бұрын

Where can i buy one of these kits?

@jpc42480 2 жыл бұрын

I just ordered the same kit for the same Polaris, what’s a good 2-stroke oil to premix with?

@QuantumMotorWorks 2 жыл бұрын

Below is a post from Brad B. Were I go over oil mixture recommendations.

@ATCA 6 жыл бұрын

Hopefully someone will reply. Aftet i do this, and i premix the fuel. Do i need to jet the card? If so, what do i need to jet it to

@QuantumMotorWorks 6 жыл бұрын

Trevor Moon no you shouldnt have to.

@ATCA 6 жыл бұрын

Quantum Motor Works i looked and mine has a 145 jet in it. Thats thr biggest they have for this?

@brandonrose3627 Жыл бұрын

I have the polaris 250 xplorer I was wondering if I can mix the gas my self ? Or do I need to use the oil injection to oil up the crank to?

@QuantumMotorWorks Жыл бұрын

If it's stock, there should be an oil tank that you fill up to pre mix the fuel. Both methods are intended to lubricate the crank bearings, but pre-mixing doesn't do as good of a job, I believe, in theory, when compared to oil injection.

@QuantumMotorWorks Жыл бұрын

Because the Crankcase is dry, there is no engine or Crankcase oil, it was designed for oil injection to lubricate the main crank bearings.

@macpac3803 7 ай бұрын

Do you need to plug the carb with a nipple like when removeing the blasters oil injection?

@QuantumMotorWorks 7 ай бұрын

Yes, not plugging it will allow a minor air leak.

@JoseMunoz-vt6mz 2 ай бұрын

Where did you get it, I can't find it

@nathanpierceyoung 6 жыл бұрын

What happens if you premix but do not do a block off kit and just leave the oil pump with a dry reservoir?

@QuantumMotorWorks 6 жыл бұрын

Nate assuming the pump wasnt doing anything...that idea would work....only con would be if the pump is running say 50%, you could be over mixing if you use pre-mix your fuel. Fouled plugs...no other major problem i could think of?

@nathanpierceyoung 6 жыл бұрын

Thanks for the reply! If the oil reservoir was dry so the pump wasn’t receiving any oil would you risk the pump or the pump drive gear you removed seizing up and causing damage to the lower end of the motor?

@jacobhonaker716 6 жыл бұрын

I just had my brother give me a 250 Polaris Trail Boss I put the block off kit in it and drained all the fluids in the whole bike what do you use for the bottom end oil

@joshn5073 6 жыл бұрын

it's a 2 stroke, there is no oil in the bottom end, the fuel/oil mix enters the crankcase and oils it that way

@familygaming716 5 жыл бұрын

@@QuantumMotorWorks so running the oil pump dry and running premix will work just fine? I just bought a 93 trailboss 350 and dnt trust oil injection. If this works what is the point of buying block off plate

@backyardoutdoors4137 4 жыл бұрын

So I’m currently attempting to install a block off kit and I’m to the point where I can’t get pump drive gear out of motor. My question is what tips or tricks can be used to get it out and if I can would I be safe to put blocking plate on with gear inside?

@QuantumMotorWorks 4 жыл бұрын

I believe I used a pair of needle nose pliars....its possible your engine is at a particular stroke and the crankshaft gear is applying tension to oil pump drive gear, which is engaging it, making it hard to pull out. Try rotating your crankshaft over by hand with the spark plug out to top dead center, and see if you can get it out with a pair of needles. If not, something else is wrong...might be seized. Or damaged

@tommyhjelmgren2108 4 жыл бұрын

@@QuantumMotorWorks I had a similar problem. The little tab that allows you to grab the pump drive gear broke off while I was trying to remove it. I now can't get a grip on the pump drive gear to pull it out. Can I just leave it in and put the plate over it with gasket maker? Not sure why that would need to come out anyways. I should add, I have the whole top end off b/c I'm doing a rebuild. I'm working on a '93 Trail Boss 250. It's so old, I'm wondering if the gear is just fused in there. I was reading that on some models, part of this gear is plastic for some dumb reason. Part of the piece I broke off was definitely plastic. Anyway, the bottom end feels smooth with no play so I'm going to leave well enough alone, finish rebuilding the upper end and call it goods. Don't really have the time / energy / money to put too much into this guy.

@tomascharles5080 4 жыл бұрын

Tommy how did that work for you by leaving the old oil gear in and blocking it.

@QuantumMotorWorks 4 жыл бұрын

You have to take the gear out. If you leave the gear in for the oil pump, the water pump gear will engage it while the engine is running and more than likely damage the engine. There is a side cover located on the right side of the engine behind the expansion pipe. This is where the water pump shaft is located and it engages the oil pump drive gear/shaft. The shafts are steel but the gears are plastic. They must be disassembled carefully or if forced. They will break. You need a service manual.

@tommyhjelmgren2108 4 жыл бұрын

@@tomascharles5080 It worked great for me - pretty sure my engine is air cooled (see info from Quantum if you have water pump). I just put gasket maker around the oil pump to seal it up and put it back on. To be clear, the gear / shaft was no longer attached to the pump at this point so the oil pump wasn't engaging that shaft / gear and vice-versa. That way you don't need the block-off kit. The other thing I did (can't remember if it's in the above-video) is I put gasket maker and a vacuum cap on the cylinder where the hose from the oil pump attached - I think it was right near the intake manifold but on the actual cylinder. Maybe Quantum can expand on his point below - If the oil pump gear is spinning, but not attached to anything, I'm not sure how it would damage the engine, even if the water pump is engaging the oil pump gear. Wouldn't the oil pump gear/shaft just spin? I really don't know, so that's why I say to ask Quantum. Thanks for posting the video and responding Quantum, by the way. It was a big help to me.

@garyjohn316 2 жыл бұрын

How much 32:1 should you use as break in....a full tank or half or a pint? Thanks

@QuantumMotorWorks 2 жыл бұрын

For a top end, probably 1- 2 hours of gas, if a bottom and top, figure 3 hours.

@t24goat72 4 жыл бұрын

What was the tool you used for getting those screws out called ?

@QuantumMotorWorks 4 жыл бұрын

Just a ratchet.

@michaeldeutsch8449 2 жыл бұрын

Do i need the stuffer? Could I just take out the spindle and disable the oil pump as a temporary solution

@QuantumMotorWorks 2 жыл бұрын

I can't remember what it looks like inside but I'm pretty sure the aftermarket replacement part is important for something....

@highlightzilla9581 3 жыл бұрын

Where can we find a kit

@jpc42480 2 жыл бұрын

I ended up taking out my engine on my 03 air cooled Trailblazer, I got the oil pump off my I’ve tried everything trying to pull the drive out and it’s not coming out, any suggestions?

@QuantumMotorWorks 2 жыл бұрын

I think I answered a question like this a few years ago. Turn the engine back and forth by hand while trying to pull gear drive with pliers.

@TimothyVanko-eo9tx 3 ай бұрын

Were you ever able to get that shaft out oof so how

@tylouis7302 6 жыл бұрын

If this is removed how does the crank and lower end get oiled?

@QuantumMotorWorks 6 жыл бұрын

by pre-mixing your fuel with 2-cycle oil

@bradystotts6153 6 жыл бұрын

Can you explain this please?

@joshn5073 6 жыл бұрын

the crankcase acts as an intake manifold, piston down stroke sucks and slightly compresses the air/fuel/oil from the carb. into the crankcase that's why crankcase seals are important

@yewwtooob 2 жыл бұрын

@@bradystotts6153 just like a chainsaw.

@ruipaulofsantos 4 ай бұрын

hello, on your Oil Pump Drive, there is a groove (see minute 4.02, where you place your thumb). Can you tell me if an oring is housed in this groove? When removing my oil pump drive, I noticed that I don't have any orings, and I believe that this part has never been touched, and I see that in the parts diagram (motorcycle diagram) an oring appears. Now I'm unsure whether I should buy the oring or not... Hug from Portugal

@QuantumMotorWorks 4 ай бұрын

I dont remember installing any o-rings. I made this video many years ago, so I cant fully remember.

@QWERTYQWERTY-vb7yv 4 ай бұрын

What about the throttle cable ?

@jessicareed5699 8 жыл бұрын

What kind of cable do I need when I remove the oil pump

@jakegraham101 4 жыл бұрын

What is that big hose right above the pump? mine is ripped and I have oil coming out of that would this fix that issue?

@QuantumMotorWorks 4 жыл бұрын

Not sure which hose you are referring to

@danielgomez2253 2 жыл бұрын

Mine leaks air out of the top hose this guy is referring to, looks like so sort of electric cables, not sure if this is why mine isn’t turning on.

@TonysPhoneCollection1 3 жыл бұрын

Hey bud do you still make these or know where to buy them?

@MonstroLab 3 жыл бұрын

@Tony’s Phone Collection - I just bought the kit from Rick Ritter Racing

@dallasstrickland6021 4 ай бұрын

What about jetting the carb for oil and not gas because the oil inject near the reeds

@QuantumMotorWorks 4 ай бұрын

Never heard of doing that

@ATCA 6 жыл бұрын

Why am I havin such a hard time finding this kit? I can only find kits for 450+

@bcoutdoors5755 2 жыл бұрын

Same

@bcoutdoors5755 2 жыл бұрын

Did you ever find a kit

@ATCA 2 жыл бұрын

@@bcoutdoors5755 i made one myself pn lathe

@chriskeiffer5861 4 ай бұрын

You remember where you got it from?

@landonseeley9931 4 жыл бұрын

Will this work on a 97 400 scrambler?

@QuantumMotorWorks 4 жыл бұрын

Not 100%, but maybe

@WETDILLDOUGH 2 жыл бұрын

I have a 2003 Polaris 250cc and every time I go to drive the quad it moves very slow at first then it kicks in then after a couple of blocks I will hold the throttle down and it makes a very loud rep sound but it doesn't go any faster then it goes very slow after that what is wrong with it can anybody help me

@QuantumMotorWorks 2 жыл бұрын

Sounds like your drive belt is slipping on the sheeves. Pull off your left hand engine cover and check the condition of CVT assembly for damage or wear; drive belt, primary and secondary clutches.

@WETDILLDOUGH 2 жыл бұрын

@@QuantumMotorWorks it looks new the only thing is the belt looks really loose

@QuantumMotorWorks 2 жыл бұрын

@@WETDILLDOUGH with the left engine cover removed, and the bike in neutral, you can turn on the engine and check the operation of the primary clutch. When you give it gas, while in neutral, you should see the primary clutch sheeves expand and collapse in a smooth manner. You can also check to see how the belt is riding in the sheeves. With the engine off, you can also check the secondary clutch by kinda pulling, or twisting in a specific direction ( ccw, or cw) to check the spring tension and ramp for damage. You should also be able to grab the drive belt and bend in backwards and there should be no cracks and it should still be pliable. Those are checks for the cvt assembly.

@shradderable 8 жыл бұрын

32:1 all the time atv mechanic said

@landonmanning3338 4 жыл бұрын

Ik this video is old buy I you see this will you tell me where you got that kit and how I could get one

@QuantumMotorWorks 4 жыл бұрын

I make them

@landonmanning3338 4 жыл бұрын

Quantum Motor Works do you have to rekey the carb to do this

@QuantumMotorWorks 4 жыл бұрын

@@landonmanning3338 no

@landonmanning3338 4 жыл бұрын

Quantum Motor Works do you still make one and will it fit a 1994 Polaris 300 4x4

@QuantumMotorWorks 4 жыл бұрын

@@landonmanning3338 it's been a while, and i believe they are all the same. I dont have my blue print anymore. I've had people ask me recently, but I would need the original pump with its cover or just its cover if it can be separated I cant remwmber,, drive gear, and drive gear cover so it can be copied.

@MyFamilysKeeper 5 жыл бұрын

Are you still making these? I'd buy a kit if you do.

@QuantumMotorWorks 5 жыл бұрын

hey there, you can text me at (909) 245 - 4854

@highlightzilla9581 3 жыл бұрын

@@QuantumMotorWorks is still ur number i need a kit

@ford9490 7 ай бұрын

@@highlightzilla9581any luck?

@carsonbowie1151 8 жыл бұрын

I can't find this kit anywhere! Can anyone help?!?

@QuantumMotorWorks 8 жыл бұрын

+Carson Bowie I can make them on my lathe for about $50

@Myotherhobbies 6 жыл бұрын

I Have a Lathe I may Make one of these Blocks

@emoh_em_ekat_sdaor_yrtnuoc8618 3 жыл бұрын

Is there somewhere I can find a block off kit

@MonstroLab 3 жыл бұрын

I just got one from Rick Ritter racing

@emoh_em_ekat_sdaor_yrtnuoc8618 3 жыл бұрын

@@MonstroLab I got mine a while ago, have you used yours yet?

@MonstroLab 3 жыл бұрын

@@emoh_em_ekat_sdaor_yrtnuoc8618 i just installed it on my 00' Xploder 300 went in super easy. im going to try Amsoil Saber and high octane at around 1:32-1:40... i went up in Jet size to 145 to allow for thicker fuel

@emoh_em_ekat_sdaor_yrtnuoc8618 3 жыл бұрын

@@MonstroLab I’m going to run 1-32 when mines all done, still painting the frame

@michealslone7406 5 жыл бұрын

Can you still make these?

@QuantumMotorWorks 5 жыл бұрын

i have had a couple request in the past few months, but when i went through my parts i could not find my original parts, and i never made a blue print. i would need to copy the original parts to make it again. let me kmow if you are interested.