mounting a polaris engine

[jerry]

I am tring to mount a polaris 700 engine and can only find 2 mounting points
that does not seem to be enough. I have a sshop manual and that does not show anything.

So my question is are there more mounting points, and were are they??

[amdburner]

As far as I am aware there are only two. The engine, from what I have seen, is cradled together with the transmission which is how the setup gets it's strength and stability. If you are going to use it without the stock tranny you will need to get creative I would imagine. Without actually getting my hands on one this si all I can offer you.

Dave

[sodman]

Jerry I dont know if a 500 polairs motor is the same but there are (if looking at the carb)2 5/16 bolt holes to the right of carb if this is a4 wheeler motor. If it is a snowmoble motor I can look at the 700 that is here at my place If you would like a picture of my motor mount i'll send you one just post a reply
Blair (sodman)

[grant_wt]

I have never seen a sled engine that did not have 4 bolts on the bottom of it for mounting. Should be two flat surfaces directly opposite of the head with 2 threaded holes each. If you are talking a polaris 4wheel I have no idea. I guess I should also say 2005 and newer polaris sled motors may be different. But for the most part sled mounting is simple. 2 points is not enough. Not for the mass of an engine at least. There should be at least 2 per side. Note that mounting bolts may only be 3/8".

Grant

[nutz4sand]

If you are talking about a sled motor I cannot speak for Polaris as I have never even owned one. But for Yamaha and Artic Cat and Ski Doo they simply have the bottom mounts/braces that the motor bolts to.

The biggest thing with ANY sled motor is its gonna have some kind of adjustable device near the clutch side that goes between the mounting of the DRIVEN clutch bearing holder and the engine case near the DRIVE clutch. This adjustable device is to hold the clutches the perfect distance apart while the belt is being ran thru the clutches and trying to pull the two clutches towards each other. Thats all it needs.

If you are talking about a 700 quad motor (I knwo they make an 800 but a I only think a 7000 quad motor) then it may be like the Scrambler 400 two stroke I have. They have a motor mount on the front of the crankcase. One on the backside of the crankcase. And one on the top of the head. These are all rubber mounted and allow the motor a little shake room. Then between the motors case near the clutch and the tranny there is a threaded adjustable devive to make sure the belt is held in the clutches the proper amount apart.

To sum it up short and quick. The adjustable part to keep the clutches spaced the right distance is directly in the line of pull. Its right between the two shafts centers (crankshaft and jackshaft or tranny input shaft) So it balances out the pull pretty well and the other mounts only have to deal with some pull on them.

Being they usually reach out in front and back of the motor thay are not stressed to bad to keep it from being torqued backwards as it pulls the belt on the topside.

If you ever work on a really powerful sled setup like a 900 Tcat or MachZ 780 triple you actually set the clutch so at low power the clutches are a bit out of alignment in the wrong direction so that when the motor hits the pipes and is making full power the rubber motor mounts allow it to twist just enough to have the belt dead on straight at full power when its most crucial. Thats where a good tuner will want the alignment on a powerful machine. Bill

p.s. The Honda Pilots have a neat setup that has a solid steel plate between the motor and tranny. They cannot get to close or too far apart unless the huge bolts loosen up. But the tranny shakes right with the motor. Not a problem as the CV's deal with the wiggle thru the axles. On a sled the chain case is mounted solid (on all the ones I have seen) so they add the adjsuter to keep the tension. Otherwise they would have to make the gearbox float and run power off of it hru a system that alowed it to shake wiggle and float.
If you are building your own buggy with a sled motor and can use a tranny thats mounted solid to the motor like the Honda Pilot and then let the CVs take care of the movmenet like the Pilot there is no reason it would not be fine as long as you got it dead on. I would say mount the exhaust to the engine crandle as well. Let it all move as one.

[Bullnerd]

"Scrambler 400 two stroke I have."

Did you say this was for sale?

[jerry]

Sorry guys i should have said it was a Quad motor 700 efi 2004 out of a sportsman. I am also using the tranny from the same and have the mount to connenct the two

I saw`the mount on the front of the crank case. I foundthe two bolt holes onthe right side of the head,I wondered what they were for (engine mount genius). THere are no hole on the left side of the head.

I thought there had to be more then just the two i did not count the mount beteen the engine and tranny as one.


I planned on directly mounting (the front and upper right side) them to the Frame (no rubber). From what i have read that seems to be standard?????


THANK YOU ALL

[nutz4sand]

Find the same quad in person or online at a Polaris forum for quads and take notes to as all where it hooks up. Bill