DS650 First Fire 770CC

This is my 2000 DS650. This is the first fire of the rebuilt motor. the motor is now a 770cc. All parts were purchased from Eric Oldham or OMW Racing.

[@brandonquenneville7330]

understanding that this was the guys first time touching the quad after the engine was built,, completely top to bottom* awesome

[@kurtboyko4446]

Thank Brandon - I am just in the process of uploading the video from last week when i had it on the dyno.

[@brandonquenneville7330]

mint fuckin video.... every time* the dream build... this guy knows what's up.

[@kurtboyko4446]

Oil pressure - I installed a small oil pressure gauge when i did this rebuild. It is behind the exhaust on the right side. It was had to see, so i have know changed it and the gauge is mounted right up by the tach. thanks for your comments Proulx62.

[@proulx62]

Nice video! How do you know if you don't have oil pressure on the ds?

[@bdog4u2]

There's a light that lights up

[@kurtboyko4446]

The reason I had to bleed the system is because sometime you can get around it. I had the motor laying on it's side the day before and I filled the oil filter housing a couple of times. I have done it this way in the past and it worked.

[@badabing3136]

Mines got the small vent line that goes from the top of the case to the top of the remote sump and I still bleed it anyway every oil change because I’m paranoid. I also just started putting a dab of never seize on the bleed screw. That bastard can be tuff to crack loose! Much easier to crack loose now each oil change.

[@23FABILA]

@@badabing3136Sorry, I know this is an old post but I have an 05 DS650X. Can you please tell me how to bleed the system? Do I do the oil and filter change first, then remove the filter and then remove the bleed screw? (How much oil will come out before I replace the bleed screw?) then do I replace the bled oil back into the reservoir tank? Thanks for any help.

[@sdm115]

nice . I have ds650 baja I just brought back to life just need to figure the carb settings. nice build

[@rclgrimmzy3238]

What did you fix on it ? Trynna figure out what’s fixable on my 650, in need of rod bearings but can’t quite find anything

[@farminghuntingtrapping-fht]

⁠@@rclgrimmzy3238 reach out to CT racing they are a machine shop and they will rebuild your crank for $100 labor + whatever the bearing/bushings cost. They also have a ton of parts for the ds650. Hope this helps

[@kurtboyko4446]

In the early model's 2000 and before you have to remove the oil filter and turn out a screw to let the oil bleed into the filter housing. In the later models you didn't have to do it because they changed the design.

[@mattijsleerink6740]

Sow it is, oli out en filter out and new oli en filter in and done? 😬

[@allthrottlemotors4963]

Hey could I put a f650 crank in a DS650 motor? I know there the same more and what about the f650 timing chain

[@PROATV13rb]

Kurt, how did the motor hold up. I want to do mine but you know people always say they are no longer reliable once built like that. I just did high Comp. Piston Ron woods stage 3 cams ports the head and intake , lectron carb with air filter right to the carb. Haven’t rode it yet . Had electrical problem with the Ron woods chi so I took it off and got a different one, just need to test it out, money wise I don’t even want to know what you have in it. Has to be 10 grand or over because just what I did cost out the ass. I have the valves done to and put new ones in it. I did not do was change the way the shims are? Another thousand dollars for that kit so I was going to wait and see if it pukes Out the shim the way it is now. If it does then I will tear Back down and do like you did

[@kurtboyko4446]

Ryan, IT'S been a couple of years now and it still runs like a clock. I ride it a fair bit and always drive it like I stole it. You don't want to wait until you have a problem without the shim under conversion. Do it now. Get a hold of Eric Oldham - he knows the DS motors inside out.

[@suzukierider41]

What did you have to bleed

[@riveragladys6870]

Looking for headlight bombardier ds 650 2001

[@joshuacongdon2667]

Does it run on pump gas???

[@kurtboyko4446]

No, its 13 to 1 compression. I run it on C12 or 108 octain

[@awalker8345]

i See a rengrade 1000 in the future Allen

[@badabing3136]

Hahaha You’re kidding right? This quad has a 770 kit from OMW racing. A renegade 1000 is a kids toy compared to this machine. Not even on the same playing field, this quad would completely destroy a Rene 1000 that weighs 800lbs. (owners have proven the 700lb factory weight is complete BS..)

[@04tacomaguy1]

still run?

[@markmaynard8105]

really don't have to bleed anything. before you put oil filter back in you need to turn the motor over without it firing up, put red swithch in non firing position and start turning the motor over, at the same time keep a eye on were the oil filter goes and you should see oil weeping out.if u see this your in good shape. this means the oil pump is pumping oil. if you don't see oil this means you have a air pocket in the oil line.don't not start motor up if you don't see oil pumping out of weep hole. if u do your motor will take a shit and die

[@davidmarbur3192]

I have a 2004 DS 650 Baja X. I just had the top end rebuilt. When I allow the DS to run at idle or if I ride it, It will pop out the valve cover gasket. I have removed the Oil Tank and all in/outlet are free from obstruction. What could be causing the bike to blow the gasket. The pressure is obviously going over the tolerances for idle and 6000 rpm. Where should I start to diagnose this issue. I have brought this bike to the dealer twice after and have paid the thousand of dollars and still has this issue. What is the best troubleshooting for this before I pull off the crankcase cover to check oil pump rotors. Thanks any help would be great.

[@kurtboyko4446]

Does it run normal otherwise? It has too be something in the timing or fuel mixture. The only that happens is it pushes out the valve cover gasket? Have you checked the breather tube?

[@davidmarbur3192]

@@kurtboyko4446 it runs fine other than that. Starts fine runs smooth no power loss. I have checked then lines and can push air through them. On the oil connection on bottom of crankcase it pushes oil. Have not check top connection on top of crankcase. It real hard to find people who have knowledge of the ds in south Carolina. Just trying to get info before I start tearing this thing apart. Havent tore one down since 2006. Thank you for knowledge

[@kurtboyko4446]

Try pushing air through the crankcase vent tube. It comes off the engine on the brake pedal side just under the exhaust. It ends in the air box.

[@davidmarbur3192]

@@kurtboyko4446 the line coming out of crankcase on brake under exhaust side close to motor mount I can blow air through but they have it on a Y connection running into oil tank not airbox. Does that make sense?.

[@davidmarbur3192]

It Y's with the line coming off the top of the valve cover and both connect to oil tank connection below fill cap

[@canocariteatv8582]

can am en la casa chekea en canito gonzalez paque veas la fiebre en puerto rico

[@kurtboyko4446]

Here is the link to the dyno run from last week - kzbin.info/www/bejne/mHzcnmiuiplmhZI

[@kurtboyko4446]

Here is a link to a Go-Pro video I did this summer of a trail ride - you can here how it likes to Rev. kzbin.info/www/bejne/rquzo4eAdruenZY

[@brandonquenneville7330]

videos man of this machine**** please

[@kurtboyko4446]

Just posted a ridding video Brandon

[@bobbyburdette5827]

Kurt Boyko where is it?