can you bore a stoc 700xx jug? - Club700XX - Honda TRX700XX Forum
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post #1 of 6 Old 11-16-2010, 09:59 AM Thread Starter
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can you bore a stoc 700xx jug?

after sinking my bike, we have determined that the clanking noise is the piston walking in the cylinder due to the ring being washed away. my question is, can i bore the cylinder to an oversized piston like i have done to other bikes because i was told it may be chrome lined and has to be replaced. im asking because i cannot find any oversized pistons,all of them are standard bore high compression.and if i can bore it i want to find out what dimensions i need to bore it to to accept a piston.

2008 TRX 700XX (Black/Charcoal)
13T,Stage 1 hotcam,11:1 CP piston,L8ton Sway bar,Orange Maier Plastics,21" razr 1 front,ITP Sandstars on 10" ITP T9 Pro Series,FMF powerbomb/powercore.EHS programmer next.

2007 GSXR 1000 (Orange/Black)
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post #2 of 6 Old 11-16-2010, 10:20 AM
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Yes you can bore your cylinder, your cylinder is nikasil coated, and it can be re-coated after bore, I would call CP pistons and inquire about a custom piston if there are none out there.....you could probably use a raptor piston and machine the valve reliefs if needed. Bo would know.

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post #3 of 6 Old 11-16-2010, 10:30 AM Thread Starter
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they say at honda that it is not nickel coated and can be bored .25 over, for $278 i can buy a new cylinder, and i can find new pistons in the stock bore size much easier. are you positive it is nickel coated?

2008 TRX 700XX (Black/Charcoal)
13T,Stage 1 hotcam,11:1 CP piston,L8ton Sway bar,Orange Maier Plastics,21" razr 1 front,ITP Sandstars on 10" ITP T9 Pro Series,FMF powerbomb/powercore.EHS programmer next.

2007 GSXR 1000 (Orange/Black)
-1,+2 Driven Kit,K&N, Full Leovince stainless exhaust,PcIIIUSB/Dyno tune,Hyperpro Damper,ASV Levers,Woodcraft Engine covers,Woodcraft Clipons,Xenon HID,Carrozzeria Wheels,Galfer Rotors(gsxr.com 2010 bike of the year)
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post #4 of 6 Old 11-16-2010, 12:14 PM
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Thumper Racing makes a big bore kit:

http://thumperracing.net/index.php?r...&product_id=91

They do not mention that the cylinder needs to be replated after boring, so that makes me think it is not plated. Does the stock cylinder have a steel sleeve? Its bore can't be all aluminum, the aluminum won't hold up without being plated. I have not had my engine apart yet to know, but I would think someone on here has and should be able to give you the correct answer.

Doug

2004 TRX450R, 2008 TRX700XX
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post #5 of 6 Old 11-16-2010, 12:49 PM Thread Starter
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im not looking for big bore, im looking to get rid of scarring if there are any, but i just had a buddy of mine bet money that my piston is fine and that my clutch basket beraing is bad, makes since because i found out honda did a bearing revision recently.

2008 TRX 700XX (Black/Charcoal)
13T,Stage 1 hotcam,11:1 CP piston,L8ton Sway bar,Orange Maier Plastics,21" razr 1 front,ITP Sandstars on 10" ITP T9 Pro Series,FMF powerbomb/powercore.EHS programmer next.

2007 GSXR 1000 (Orange/Black)
-1,+2 Driven Kit,K&N, Full Leovince stainless exhaust,PcIIIUSB/Dyno tune,Hyperpro Damper,ASV Levers,Woodcraft Engine covers,Woodcraft Clipons,Xenon HID,Carrozzeria Wheels,Galfer Rotors(gsxr.com 2010 bike of the year)
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post #6 of 6 Old 11-16-2010, 01:39 PM
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Quote:
Originally Posted by Simplyorange View Post
im not looking for big bore, im looking to get rid of scarring if there are any, but i just had a buddy of mine bet money that my piston is fine and that my clutch basket beraing is bad, makes since because i found out honda did a bearing revision recently.
Well, you have to bore the cylinder no matter what. If you are going to buy a new piston and bore the cylinder, might as well go big bore and pick up some more power. Regardless if you bore it 3 mm or .25 mm, it is going to cost you close to the same when all is said and done. If I have to spend money, I would rather spend it knowing I will pick up a little power then just replace with stock parts. Just my opinion.

I do agree with your buddy though, I don't think it is your piston clanking.

Doug

2004 TRX450R, 2008 TRX700XX
(BITD #639 Quad Ironman Expert)

2015 sponsors: Teixeiratech.com, Motowoz.com, Snailmotorsports.com, My bank account.

2008 TRX700XX
2005 TRX450R
1986 TRX250R
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