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Raptor 700 Information => 700 Motor Mods => Topic started by: redraptor23 on August 20, 2009, 12:09:51 AM

Title: Big Bore?
Post by: redraptor23 on August 20, 2009, 12:09:51 AM
If i have to bore out my cylinder because of my misshap that happened to me latley what is recomended to be as reliable as possible. I dont what to be blowing head gaskets left and right and having to work on it all the time. Let me know what works for reliability? I know if i need a crank im goin with a Barkers +6.
Title: Re: Big Bore?
Post by: Kamakazi on August 20, 2009, 07:29:06 AM
paging kenny  :clap:
Title: Re: Big Bore?
Post by: Krandall on August 20, 2009, 07:40:24 AM
Really depends on what you're looking for out of your build.

Are you looking for a trail machine, duner, mx'ing, or drag race?
Title: Re: Big Bore?
Post by: redraptor23 on August 20, 2009, 12:11:38 PM
Im lookin for a Trail/Duner that could win some races :nod:
Title: Re: Big Bore?
Post by: preddy08 on August 20, 2009, 01:53:03 PM
As long as you have studs, the sky is the limit. I've had by 727 14.25 Venom piston for two years of VERY hard riding, and racing. I'll check my coolant every so often, and its always at the brim on the radiator.
Title: Re: Big Bore?
Post by: NaturalRaptor on August 20, 2009, 05:59:22 PM
Quote from: preddy08 on August 20, 2009, 01:53:03 PM
As long as you have studs, the sky is the limit. I've had by 727 14.25 Venom piston for two years of VERY hard riding, and racing. I'll check my coolant every so often, and its always at the brim on the radiator.

What head gasket are you using?   ???
Title: Re: Big Bore?
Post by: preddy08 on August 20, 2009, 08:17:29 PM
Cometic
Title: Re: Big Bore?
Post by: NaturalRaptor on August 20, 2009, 09:38:20 PM
Good to know because I am going back together right now with a 105, cometic gaskets, and KMS studs!  :thumbs:
Title: Re: Big Bore?
Post by: Kamakazi on August 20, 2009, 09:39:53 PM
what ever happened to kenny's head gasket  ???
Title: Re: Big Bore?
Post by: NaturalRaptor on August 20, 2009, 09:43:09 PM
Quote from: kamakazi on August 20, 2009, 09:39:53 PM
what ever happened to kenny's head gasket  ???

Talked to him about a week ago, it is still coming. He might have some by now ???, need to call him again
Title: Re: Big Bore?
Post by: DL700 on August 20, 2009, 10:41:13 PM
from what ive heard the fire ring did lot match the port correctly. the cometic gaskets will work but are very unforgiving, head and cylinder surfaces need to be perfect flat and very smooth, and a bit more torque then stock  :jaw:
Title: Re: Big Bore?
Post by: redraptor23 on August 21, 2009, 12:30:58 AM
Quote from: preddy08 on August 20, 2009, 01:53:03 PM
As long as you have studs, the sky is the limit. I've had by 727 14.25 Venom piston for two years of VERY hard riding, and racing. I'll check my coolant every so often, and its always at the brim on the radiator.

I do have studs
Title: Re: Big Bore?
Post by: 1badazz_700r on August 21, 2009, 07:46:40 AM
I believe kenny had a right up on here about studs distorting the cylinder, and said by chamfering the bolt holls you get the same clamping pressure without distortion with stock bolts. I would also liketo see someone take a stock yamaha gasket and trim it to fit a bigbore and see if it holds up. If nobody has done it by this winter i will do it for sure. cause im planning a few upgrades this winter :thumbs:
Title: Re: Big Bore?
Post by: redraptor23 on August 24, 2009, 03:24:21 PM
Ya im thinking i might go with a 105 bore with that +6 barkers crank. What piston should i go with with that 105 bore?
Title: Re: Big Bore?
Post by: NaturalRaptor on August 24, 2009, 07:12:47 PM
Quote from: redraptor23 on August 24, 2009, 03:24:21 PM
Ya im thinking i might go with a 105 bore with that +6 barkers crank. What piston should i go with with that 105 bore?

What fuel are you wanting to run?   ???
Title: Re: Big Bore?
Post by: redraptor23 on August 24, 2009, 07:41:48 PM
Quote from: NaturalRaptor on August 24, 2009, 07:12:47 PM
Quote from: redraptor23 on August 24, 2009, 03:24:21 PM
Ya im thinking i might go with a 105 bore with that +6 barkers crank. What piston should i go with with that 105 bore?

What fuel are you wanting to run?   ???

Well i got a 55 gallon drum of 110 octane sitten in my garage from my last build so im open to anything.