Haha Another Delema Guys

[sweetshee4312]

i have two options here i need a new top end, so i was just onna do the top end when i saw this kidan deal. I can get my cylanders ported, get the whole top end rebuilt all for 775, or i can have my uncle redo it for cheaper and get a cool head an liek v-force or something, maybe without the reeds, i wanted to get the whole porting deal done, but someone told me it would be to much, someone fill me im

[sweetshee4312]

just give me some fin opinions here guys

[evil]

first off, does your uncle know what the hell he is doing ? if it were me, my only option would be to take it to a shop that does it, and have them mill your stock head till you can save up for a port and polish with a new head and domes. just m.o. though. later

[sredish]

Like evil said, does your Uncle know what he's doing? If your confident that he in fact does, might be a good way to save money, but BE SURE he know what he's doing. That isn't a fun first timer thing to do. Just cleaning up the factory mess without opening too much up will help a lot and is rather easy.

 

But then, when considering the downside, might be best to save up and wait for a good shop to do the whole kit and kaboodle, that way if there's a f*^k up, it's their bill, not yours.

[fixitrod]

The way I'm reading the post is your uncle isn't going to port it... just rebuild the top end. If that's the case I'd get it ported while you have it apart. You can gain great power if the right person ports your quad. You can always add a head and reeds later without tearing the motor down.

[boonman]

I'm reading it that way too. And sweetshee, don't be soo friggin impatient!!! Calm down bro. I noticed your two posts weere like an hour apart. Give it time. I know you're excited. but take your time. now, consider this, when you get the cylinders ported, they will have to be bored. So, if you have the bike ported when the top end is in good shape, (like down the road sort of thing...) you will be essentially wasting a bore.... Now, I would pony up some $$$, and get the thing ported. PM Jim at PassionRE, and see what he can do for you. I am thinking he should be able to come close to that price with porting and a new top end.... $775 isn't exactly a steal. This is of course with you tearing the top end down yourself. and assembling it. Neither of the two is hard. Get Unc's help, and you'll have one friggin flyin bike....

[sweetshee4312]

my uncle used to own his own shop, he did bores for customers, so im not worried, but ye, take a look at the package http://www.rossiereng.com/yamaha_atv.html its tje third one down

[oldturtle]

Another opinion for what its worth. Cranks have failed with only pipes and moderate porting. If crank lets go you could be looking at 750 to 1000 in repairs including wasting a good bore and piston. For about 150 in parts you can get welded/trued crank, gaskets, and seals. For another 175 you can get crank installed. Then never again worry about crank for life of quad.

For me, I'd consider two options;

1) Have Unkle help with a good but cheaper top end only job. Forget about porting, cool heads, reeds, etc until later when you get around to swapping out the crank. Or;

2) Get top end with porting, have heads milled and blueprinted to match gas you want to run, swap out crank. Now in future you could add reeds or whatever and mods would help and motor would still be reliable.

I have never done a bottom end but I have been told they are a piece of cake. If your Unkle is good, he could even think about doing it all. Now you would really have a strong and realiable motor for no more than the shop top end only.

These prices could be out of line but I think they give you the idea.

I think it would be interesting to here from anyone who has lost a crank and what were the engine modifications at the time. I'm a real rooky at all of this and very interested in learning more.