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2001 Raptor 660R Question!!!!This is a discussion on 2001 Raptor 660R Question!!!! within the ATV/UTV - General Discussion forum, part of the ATV/UTV Forums category; Originally Posted by rsheppick
I am thinking I might do everything but the port/polish. What do you guys think?
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#61
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#62
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Yeah the cost of the port and polish is such a huge investment when I cannot know for sure I will notice any real performance differnts with or without it. I am going to have them bore it 102MM over with a JE 12:1 Piston, install the new valve springs and hot cam 2. What else is there to do inside of the motor that wouldn't cost a fortune besides the rod as that would require a complete teardown of the motor. I'm sure with the current items I have on it + a cam + big bore + race fuel it will hall some major booty. I'm also droping a tooth on the front. |
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#63
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| HA, I'd hold off on dropping the tooth on the front, as that's a huge drop, and with those motor mods you need to ride it first. I'm sure it will have plenty of Umph for you. |
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#64
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What do you think about doing all the mods minus the Port and Polish. My wife won't go for that. |
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#65
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| The port and polish is expensive. I don't know how much of an improvement they make, as I've never had a port and polish done. I'm calling on your parts right now. |
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#66
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| Okay: Piston $125 Connecting Rod $109 (Would take up to two weeks to get here, as it's not in stock) Gasket kit $45 Give me the word and I'll get them ordered. The piston and gasket kit that are in stock would be here in 2 days, so if I ordered them today, they would be here on Monday. How soon would they be able to get to working on your quad? |
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#67
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| I need the Piston and the Gasket kit. Also, they mentioned there was some other gastkets that you need to replace along with the +2MM gasket kit. I'm not doing a full tear down of the motor to replace the rod so i'll skip it until I need to. How do I need to pay for them. |
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#68
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They are a week out around the valley just to tear the top part of the motor apart. I won't even have my Cam until tomarrow. So Monday is fine as it will take them a week to tear it down then it will take Linds another week to do the valves and stuff. Find out how much a set of new intake valves would cost. I think my motor has 5 of them. |
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#69
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That piston is 12:1 so I will be required to run race fuel then? 115 Octane? |
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#70
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| It depends. If your motor knocks, then yes, if it doesn't no. My CRF has an 11.5:1 and the new CRF's have 12:1 and don't require race gas. But it's all luck of the draw. Some engines need it, others don't. |
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#71
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So it is sort of a wait and see type thing. I wonder if I should really just get rid of the dynoJet's and go back to GYTR or Mukuni standard jets and needles. |
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#72
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| Yep that's right. |
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#73
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#74
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| Actually it's the other way around 3 intake and 2 exhaust. |
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#75
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#76
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I've got the Kibblewhite Titanium valve spring kit here with me it just came in the mail I paid 142 for it. Linds shop told me they might recomend relpacing the actual valve intakes not just the springs. I can worry about that a little later but for now I need the piston and gasket set |
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#77
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#78
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| Since your going to the 686 when you do get new valves go for bigger valves instead of just replacing the stockers. |
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#79
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Bigger???? I've been looking at a new set of intake valves and didn't notice any differnt option than stock? |
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#80
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[Only registered and activated users can see links. ] Google for "raptor oversized valves". |
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