2004 Rev ..Rebuild or replace?

[knee deep in it]

Thanks Veedy. I'll keep that in mind. Just out of interest, what are you running now that you don't like as well as the Rev Chassis?

 

[takethebounce]

hmm, not sure why bc ghost has to replace the motor, why not just put in a new topend, (brp pistons in an 04 where not the greatest). his motor is still good, just do a couple of checks for runout etc. if the motor goes south then i'd replace, otherwise freshen topend, put the money you guys want him tospend back in the pocket.

bc ghost ya can do what you like, but the 04 motor is a good one, freshin the topend, and ride the sled. you will be no further ahead with a new motor or a 800r. i tell it like it is(have an 04800 going strong) ya can do it yourself, just take your time, these other guys have no idea.

jeff get with the program!!! his motor right now is fine, i'm sure he doesn't want the change over head ache. he's still unsure if he can do it himself, and you already blew your F motor, give the guy a break.
he is better off just replacing the top end, instead of all the bs he is hearing so far.
you guys need to quit getting backed up as this is what causes shitty ideas.

I only said to look at a short block if the crank runout check didn't show positive....each to their own...

 

[tex78]

did i say anywhere to not fix it...... no ' if thats all thats wrong with it fix it..... i was just sayin that i put the 07 parts into my 04 chassis and love it...

 

[jbb]

weigh the options. you have a 4g sled that needs 2300 put into it. will you get that back down the road? or do you up grade? take that 2300 that your about to spend. sell your sled or trade it in and get yourself a newer 6-7g sled? because at the end of the day its still an 04 and its still only worth 4g no matter how much ya put into it!!!

 

[knee deep in it]

weigh the options. you have a 4g sled that needs 2300 put into it. will you get that back down the road? or do you up grade? take that 2300 that your about to spend. sell your sled or trade it in and get yourself a newer 6-7g sled? because at the end of the day its still an 04 and its still only worth 4g no matter how much ya put into it!!!

if you can put $1,000 into it and ride it for two years, then it is a good investment. In two years, it is still worth close to $4,000. That 6-7,g sled will be worth 4-5 in two years as well.

At some point, the depreciation really slows down. When ski doo comes out with a new chassis, all revs will be valued the same based on condition. If he is going to upgrade, the economic choice is to upgrade to an xp.

 

[jbb]

if you can put $1,000 into it and ride it for two years, then it is a good investment. In two years, it is still worth close to $4,000. That 6-7,g sled will be worth 4-5 in two years as well.

At some point, the depreciation really slows down. When ski doo comes out with a new chassis, all revs will be valued the same based on condition. If he is going to upgrade, the economic choice is to upgrade to an xp.

but we all know its a sled. you never get away easy. theres always something ya find when ya start looking. lol

 

[Modman]

.....When ski doo comes out with a new chassis, all revs will be valued the same based on condition.....

HUH?? not likely, a mint 04 rev is not valued the same as a mint 06 rev. sorry if you are trying to sell one. The XP made the Rev obsolete but they are still not all valued the same, even based on condition.

BC Sno-Ghost - PLEASE CHECK THE CRANK RUNOUT BEFORE YOU DECIDE ANYTHING! Throwing pistons onto a high mile bottom end is only going to mean you get to replace it twice......Imdoo'n should know better than to just say "top end" as he took out a crank last year and not quite as easy as he says (although 2 strokes are pretty easy). Lots of things like making sure you check crank run out, rod play, thrust tolerance etc will be critical in deciding if you want to go new short block or just replace the top end. These are things that should be evaluated before you make the decision to swap the motor, replace or sell and buy newer. No one I have ever met can tell you what the motor is like inside by looking at it from the outside.....

You mentioned that you previously took it to a mechanic that you trust. You might consider taking the motor out and tearing it down to the short block yourself to save some cost, then taking him the lower case with the crank still installed so that he can take some measurements of the things mentioned above (unless you are comfortable doing them yourself - they are not that hard). Once you determine the status of the bottom end, then decide what components you want to replace and even if you want to replace it or not if the return on investment will not be there. If you see no grease in the crank bearings and they are blue at all, etc will help in determining the life left in your current motor. If everything specs out with the crank, then it might just be a top end. If the crank specs are out, no point in doing the top end, u need a shortblock and new pistons IMO based on the Doo motor history of the 800. If at any point you decide to sell it without fixing it or only doing the top end etc, then you can just bolt it back together and you will be able to honestly tell the buyer about the status of the motor, what was replaced and price it accordingly, and it will only have cost you the price of a gasket set if all you do is tear it down for inspection (about $80 for gaskets).

Little things caged bearings on the piston pins, making sure the piston rings are right side up, piston clearances, pistons are facing the correct way, lubing the cylinders and performing a proper break -in are key to completing the project as well. While 2 strokes are fairly easy to re-build, a crescent wrench and some rags is not all you need, little things like a piston pin puller will make the job go far smoother and faster, and reduce some risks of damaging critical components.

Hope that helps.

 

[BC Sno-Ghost]

Thanks JBB and Knee Deep. That's sorta the situation that has me torn. Spend $2000 to $2500 and still have an 04 sled but, one I know is good for awhile or spend that money on an XP upgrade....but, hopefully the used upgrade doesn't need a bunch of work too. Used is used, you never know what you may have to repair until you get it out for a good ride or 2. Then it's not so much of an upgrade.
Some great advice Modman and greatly appreciated. I will definitely have the crank runout checked. I suppose it would be stupid not to when I'm doing all this work now. Don't want to have to do it twice. Thanks everyone for the advice. That helps me a lot.

 

[knee deep in it]

if it is a choice between a couple of pistons an upgrading, save the money. If it is $2,000 +, then sell the sled and upgrade to an XP. There are lots of guys who would buy your sled for a good price and have the mechanical competence to do the work themsleves. For them, it is a good deal. \if you are spending that much money, then it is not so good.

Modman, once a chassis gets obsoleted by two newer chassis, then there isn't much difference. A 2005 800 RMK isn't worth that much more than a 2002 if they have the same track, same mileage, and similar condition. The people who know and would pay extra for the newer version of the edge chassis have upgraded to an IQ or a Pro-ride. They aren't interested. The only people buying Edge's are newer to the sport or upgrading from very old sleds.

 

[imdoo'n]

HUH?? not likely, a mint 04 rev is not valued the same as a mint 06 rev. sorry if you are trying to sell one. The XP made the Rev obsolete but they are still not all valued the same, even based on condition.

BC Sno-Ghost - PLEASE CHECK THE CRANK RUNOUT BEFORE YOU DECIDE ANYTHING! Throwing pistons onto a high mile bottom end is only going to mean you get to replace it twice......Imdoo'n should know better than to just say "top end" as he took out a crank last year and not quite as easy as he says (although 2 strokes are pretty easy). Lots of things like making sure you check crank run out, rod play, thrust tolerance etc will be critical in deciding if you want to go new short block or just replace the top end. These are things that should be evaluated before you make the decision to swap the motor, replace or sell and buy newer. No one I have ever met can tell you what the motor is like inside by looking at it from the outside.....

You mentioned that you previously took it to a mechanic that you trust. You might consider taking the motor out and tearing it down to the short block yourself to save some cost, then taking him the lower case with the crank still installed so that he can take some measurements of the things mentioned above (unless you are comfortable doing them yourself - they are not that hard). Once you determine the status of the bottom end, then decide what components you want to replace and even if you want to replace it or not if the return on investment will not be there. If you see no grease in the crank bearings and they are blue at all, etc will help in determining the life left in your current motor. If everything specs out with the crank, then it might just be a top end. If the crank specs are out, no point in doing the top end, u need a shortblock and new pistons IMO based on the Doo motor history of the 800. If at any point you decide to sell it without fixing it or only doing the top end etc, then you can just bolt it back together and you will be able to honestly tell the buyer about the status of the motor, what was replaced and price it accordingly, and it will only have cost you the price of a gasket set if all you do is tear it down for inspection (about $80 for gaskets).

Little things caged bearings on the piston pins, making sure the piston rings are right side up, piston clearances, pistons are facing the correct way, lubing the cylinders and performing a proper break -in are key to completing the project as well. While 2 strokes are fairly easy to re-build, a crescent wrench and some rags is not all you need, little things like a piston pin puller will make the job go far smoother and faster, and reduce some risks of damaging critical components.

Hope that helps.

i'm sure i posted to check the crank runout, but still you will take out the stock 04 pistons long before the crank, i also rebuit 2 motors last year yes, if all the you replace is the top end, please tell me the difficult part, difficulty sets in when motor has to be pulled and torn down. doable but not fun. i still say replace the top end easy peasy, cehck runout before anything else. if within specks new top end you should be good for a few years. otherwise sell sled as is and buy new, only you will be spending large.

 

[tex78]

Thanks JBB and Knee Deep. That's sorta the situation that has me torn. Spend $2000 to $2500 and still have an 04 sled but, one I know is good for awhile or spend that money on an XP upgrade....but, hopefully the used upgrade doesn't need a bunch of work too. Used is used, you never know what you may have to repair until you get it out for a good ride or 2. Then it's not so much of an upgrade.
Some great advice Modman and greatly appreciated. I will definitely have the crank runout checked. I suppose it would be stupid not to when I'm doing all this work now. Don't want to have to do it twice. Thanks everyone for the advice. That helps me a lot.

in my way of thinking is yes your right used is used... u know what u have... whats been done to it ect... if ya buy somethin new well your starting all over again... mabe for the good but mabe for the bad...

plus i know one guy that sold his 06 rev and got a 08 xp and hates riging it... still to this day... he bought his old sled back from the guy and paid him an extra 1500 bones to get it back...

and also modmans right larry.... how many 06 revs for sale????????????? none cause everyone keeps them.... how many 04's????? way more.... the price will be way different between the two...

 

[imdoo'n]

in my way of thinking is yes your right used is used... u know what u have... whats been done to it ect... if ya buy somethin new well your starting all over again... mabe for the good but mabe for the bad...

plus i know one guy that sold his 06 rev and got a 08 xp and hates riging it... still to this day... he bought his old sled back from the guy and paid him an extra 1500 bones to get it back...

and also modmans right larry.... how many 06 revs for sale????????????? none cause everyone keeps them.... how many 04's????? way more.... the price will be way different between the two...

there may be a price difference your comparing 2yr diff in sleds. , but bc ghost originl ? was to either fix his sled or buy new. why would he buy an 06, not much difference between an 04/06. i still say for very little money his 04 will kick any 06 period. and i'm sure he doesn't want the hassle of alot of modifying, but that is his choice.

with the economy on a teeter totter ya may want to keep some $$ inyour pocket. a new sled would be nice, and a xp is leaps ahead of the rev. otherwise why so many on the hills.

just my opinion.

 

[tex78]

there may be a price difference your comparing 2yr diff in sleds. , but bc ghost originl ? was to either fix his sled or buy new. why would he buy an 06, not much difference between an 04/06. i still say for very little money his 04 will kick any 06 period. and i'm sure he doesn't want the hassle of alot of modifying, but that is his choice.

with the economy on a teeter totter ya may want to keep some $$ inyour pocket. a new sled would be nice, and a xp is leaps ahead of the rev. otherwise why so many on the hills.

just my opinion.

i told him to fix it too.... y not if its just a top end..... even if its a long block.... the 04 is not worth nothin not running.... so to spend 7000 on a 08 xp and 3000 into a long block its still less than 1/2....

just fix it and keep it ....

 

[imdoo'n]

now we are seein eye ta eye, ya ole whipper snipper.


everthing hinges on crank runout, should be good i think.