Congrats 660r. [img]i/expressions/face-icon-small-wink.gif[/img] But what are you going to do about the Carbs? If you don't go with the FCR's, I'd AT LEAST get Craycraft to mod the stockers. Remember your motor is only going to perform as well as the carbs allow the fuel to the motor.....

 

First off...I meant I hope that the shop I'm trying to talk to can replace the rod with a aftermarket rod, and rebalence the crank. LOL. I'm not putting the another stock one in. LOL. [img]i/expressions/face-icon-small-wink.gif[/img]

It's going to be around 3 weeks, and when I get it back it's ready to bolt on. I'm going to ship the top end Monday, and I think it will be the same week, or the week after that the new Ross Piston's will be in. Then it will take a couple days and it will be returned to me. Cost $1700 with shipping.

I got 1mm oversized valves just cause they are oversized. LOL. 1mm oversized is as big as I should go on the 686 build, so I said to go ahead and install them.

As for the carb's, Bob told me that if I'm going to get FCR's soon(which I am), then to just jet the stockers with the jetting and instructions that he sends, and it should run plenty good until I get the FCR's. I asked him about the stock carb mod's and if it needed to be done. He said with the correct jetting it should be ok. So I'm going to run them for a couple of months. I'm going to take BigScary's approach, and search ebay like a hawk until I find a set for $400-$600. So I will be adding 35mm FCR's to the mix alittle later on. Probaly April or May. If I find a good deal on them sooner then that, then I will go ahead and purchase.

This has been my dream setup for awhile, and I'm glad I finally got the chance to go ahead and purchase. It was all about timing and stuff, and all the questions I have asked here over the past month or two helped me in my decision. Thanks to all that helped, and offered their opinion. I really appreciate it, and I will give you guys a full ride report about the new Ross piston that is offered with the Craycraft set up. I'll just about bet anything on the fact that it's going to be a screamer. [img]i/expressions/face-icon-small-happy.gif[/img]

If you guys can't tell, I am very very happy. As for the Trinity 686, congrat's with it. I looked at it, and Craycraft offered a better looking set up. With heat and friction coatings, and everything their Signiture 686 offers. But I'm sure you have a great running bike. As for your 04' bike, and the stock build. I priced a pieced together a high compression stock bore, and with a port/polish, and all the works...it was just a couple hundred short of the Signiture build. So I decided it would be best to just get a 686 and some more power. [img]i/expressions/face-icon-small-wink.gif[/img]

As for the 727....your looking at big bucks in a good 727. I'm sure you could piece together one for not much over what I'm paying for the 686, but for a full set up 727, your looking at $4000 and up.

 

BTW...how much of an improvement do the FCR's have over the stock 33mm?

 

the seat of the pants is the best explanation cuz they have a tight and snappy rev.. i had my stockers set up as good as they could get and felt like they wre very good carbs,snappier throttle and reved out real hi i was beating bikes left and right that had the FCR's,i could also keep it pinned on the long hill drags and never run out of fuel...

 

Got a news update. I talked to my buddy with the 770, and we decided to just leave the stock rod in. We went over all the work it would take to install the aftermarket rod and get the crank balenced, and I'm just not interested in doing all that. I will just ride like normal on break in, and take care of it best I can. I know there is lot's of 686's on stock rod's, so mine will as well.

That is the only bad news I have gotten so far. Good news is that I'm shipping it out Monday afternoon. [img]i/expressions/face-icon-small-smile.gif[/img]

 

I don't really have too much of a option. I would have to send the entire motor to Craycraft in order to get the stock rod replaced, and I just don't want to do that. I really don't want to tear the entire bike down, and ship the entire motor off. So I'm going to keep the stock rod, and if it does happen to give out, then I guess I'll be the proud owner of a Craycraft 730!

But I have faith in the stock rod.

 

How much extra hp is a 11:1 686 over an 11:1 660?

I have beat the fire out of mine and the stock rod is holding up fine so far.

 

I 11:1 660 probaly gets around 50 or alittle more hp.

A 11:1 686 gets around 55-60hp.

 

If i were to go with the Craycraft 686 would just be able to bolt it on and, go or, do i have to ave all kinds of special tools for the timing and, have to buy new jets and, play the jet game again? what about this carb thing? Can the stockers be jetted big enough? I'm ready to pull the trigger but, i wish i could send the whole motor to the shop and, have them send it back ready to go... How much more would that be??? Hope not much.

One last thing, what kind of duarbility will i get out of the CC 686. Will i have more to worry about by having the work done like: having to rebuild it more often or, do more maintenance?? Or, can i just get it done, do oil changes and, reg maintanence and, forget it?

 

CaptBags: If you're wanting to do something like this it's going to be a risk. If you get this then yes it takes a little knowledge of mechanics and engines. You'll need a manual to get the torque specs and plenty of tools to get you through the job. Jetting is a pain in the butt after these kits, you'll never get it right unless you take it to a dyno and have them jet it properly which is what I did and my bike ran great afterwards. If you send the whole engine it will cost a fortune to ship, if anything send off the parts they need to work on and find a mechanic locally that will assemble the engine for you and save on shipping. Durability on these engine is much less than stock but I still consider them being durable. You'll prolly have to take a little more care than you would the stock engine by changing the oil more often and adjusting the valves etc...You'll have to rebuild it a little more often too.

dont expect a reliable quad when getting it built this much...anything can happen.