Yamaha Discussions about Yamaha ATVs.

690 vs. 686

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Old Sep 10, 2003 | 01:22 AM
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Default 690 vs. 686

which is better....sparks or craycraft???
 
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Old Sep 10, 2003 | 01:25 AM
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Default 690 vs. 686

From what I read they go back and forth. But I have seen nothing. All I know that to me, without even having one, craycraft is better just because of the fact that I called Sparks over a year ago and I was put on a waiting list and they told me it would be over a year before I could even get headwork from them. Craycraft said less than 3 weeks [img]i/expressions/face-icon-small-smile.gif[/img]
 
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Old Sep 10, 2003 | 01:33 AM
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Default 690 vs. 686

i wonder about the trinity 727....[img]i/expressions/face-icon-small-wink.gif[/img]
 
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Old Sep 10, 2003 | 01:35 AM
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Default 690 vs. 686

I have seen both good and bad reports on their motors. All of this has been covered many times. If you do a search for Trinity or a search for Craycraft you will most likely get all the answers you need.
 
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Old Sep 10, 2003 | 02:08 AM
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Default 690 vs. 686

Well Ridley said what I wouldn't [img]i/expressions/face-icon-small-smile.gif[/img]
 
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Old Sep 10, 2003 | 02:23 AM
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Default 690 vs. 686

what's wrong with trinity??? [img]i/expressions/face-icon-small-confused.gif[/img]
 
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Old Sep 10, 2003 | 02:30 AM
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Default 690 vs. 686

Unfortunately it doesn't seem like there is much of a choice!

Sparks = 1-yr. wait - what a joke! They do make some of the fastest bkes I have seen though (don't know about dunability though.)
Craycraft = Quick turn-around , reasonable prices, not as big of a name as Trinity
Trinity = don't know what their current turn-a-round is but, last I heard about 6-8 weeks (which I would say is reasonalbe), power - lacking from what I have seen. Sure, I know there are fast Trinity bikes out there but, many I have seen have come out of there with less power than I would have expected.
Powroll = haven't seen one run and don't know how their lead-time is.
Sam Coe - they are on the bottom of the list for a reason - do a search on the DS forum for what Sam Coe has done recently

And I thought it was tough to get a DS modified! At least you can get the piston direct and get your bore done locally. As for the head work, I wouldn't want to do that work myself!
 
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Old Sep 10, 2003 | 02:48 AM
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Default 690 vs. 686

so maybe just a oversized cam(without boring it out) and a high compression piston will work
 
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Old Sep 10, 2003 | 02:53 AM
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Default 690 vs. 686

Yes, that would work but I am sure that the head would benefit from an overbore. It would help unshroud the valves. If I was going to get a new piston and cam, I would just save up the money and get everything done at once, so that way you don't have to keep going in and out of the motor, it will save you money in the long run. Just my opinion though.
 
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Old Sep 10, 2003 | 03:15 AM
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Default 690 vs. 686

so i should have the head shaved, ported and polished and the works when i get the oversized cam and high compression piston.....sounds like a good idea...cost me about a $1000 all together.
 
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