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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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 Posted: Sun Jul 19, 2009 6:47 pm Post subject: how far over can you go on the bore of a banshee??? |
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how far can you take a std bore on a banshee (2002)?? thanks.
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2000 YAMAHA BANSHEE. |
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bansheebuzz
4fiddy Racer
Joined: 07 Aug 2007
Posts: 255
Location: Gold Coast
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| Posted: Sun Jul 19, 2009 8:08 pm Post subject: |
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80 thou is considered safe but you can go 100thou over
standard is 64mm
80 thou is 66mm
100 is 66.5mm
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Queensland Quad Riders Association
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Sun Jul 19, 2009 8:10 pm Post subject: |
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so what cc are you looking at for .060 and .100?? thanks mate.
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2000 YAMAHA BANSHEE. |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Sun Jul 19, 2009 9:09 pm Post subject: |
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don't bore it out for the cc's. it's not worth ruining a set of barrels for it. port them, then have all that extra life in them without having the cost of a new set of barrels every 3rd rebuild.
at 100 thou over = 375.1cc
at 80 thou over = 369.5cc
at 60 thou over = 363.9cc
at 40 thou over = 358.4cc
at 20 thou over = 352.9 cc
stock displacement = 347.4cc
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Sun Jul 19, 2009 9:24 pm Post subject: |
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so what tye of power would i be looking at for 80 over adn ported?? thanks mate.
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2000 YAMAHA BANSHEE. |
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Quad
The Day Starts With OZATV !
Joined: 22 Oct 2006
Posts: 2773
Location: UP FRONT
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| Posted: Sun Jul 19, 2009 9:43 pm Post subject: |
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ok you can bore 2.5mm over.
thats the last bore. |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Mon Jul 20, 2009 12:32 pm Post subject: |
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mate your barking up all the wrong trees trying to get more power out of your banshee...
tell us what you mods you have at the moment and what type of riding you do, and we'll go from there!
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2002 SE Banshee |
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Quad
The Day Starts With OZATV !
Joined: 22 Oct 2006
Posts: 2773
Location: UP FRONT
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| Posted: Mon Jul 20, 2009 12:39 pm Post subject: |
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I should of noticed where he is from.
I bet he has been talking to the bolt on bull sh1t person up the beach. |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Mon Jul 20, 2009 5:35 pm Post subject: |
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nuthin really, just bigger jets and carbon fibre reeds.
im having the porting and boring done on the w/e. $300 
aslo, is there any type of specs or or somthing for the porting? any tricks? im not to good with the machining side of things so i dont have a clue lol. the machinist said that some people are really particular in what they want done to the ports.
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2000 YAMAHA BANSHEE. |
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greenhuman
Roostin Away
Joined: 12 Feb 2006
Posts: 980
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| Posted: Mon Jul 20, 2009 7:46 pm Post subject: |
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| IMO the machinist/porter should ask what you want and be able to supply the power spread you want. I'd be wary of a porting person who wants you to supply the specs. |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Mon Jul 20, 2009 8:58 pm Post subject: |
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| banshee_jaquesy wrote: | nuthin really, just bigger jets and carbon fibre reeds.
im having the porting and boring done on the w/e. $300
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spend the $300 on a wiseco 10 or 20 thou over top end kit and buy some pipes. poor motor cant do anything with those stockers even if it is ported
| banshee_jaquesy wrote: |
aslo, is there any type of specs or or somthing for the porting? any tricks? im not to good with the machining side of things so i dont have a clue lol. the machinist said that some people are really particular in what they want done to the ports. |
yea, umm, the porter should know. you gunna have a hard time finding some porting specs cause no engine builder wants to give away the secrets to why their porting makes power.
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Mon Jul 20, 2009 9:26 pm Post subject: |
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no, he knows what to do he just asked me if I had any special sort of requests. he has been doin 2 strokes for a very long time, mainly boats and a few bikes. i know him through my work, as we have all out head/engine work done there. yeah, i sorta wanted to know some secrets haha.
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2000 YAMAHA BANSHEE. |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Tue Jul 21, 2009 7:33 am Post subject: |
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wow, $300 is a bargain 
then again, your gonna need some spare cash to buy some new cyls in the near future...
happy head aches!
mark.
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2002 SE Banshee |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Wed Jul 22, 2009 11:52 am Post subject: |
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thanks for the advice, im going 20 thou over and having the ports done. also getting a new set of pipes for it too. thanks guys.
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2000 YAMAHA BANSHEE. |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Wed Jul 22, 2009 2:00 pm Post subject: |
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depending on what sort of port job he does, you may not be able to use those cyls in the future with a 4mm stroker crank.
food for thought.
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2002 SE Banshee |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Wed Jul 22, 2009 8:25 pm Post subject: |
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| 4stroker wrote: | depending on what sort of port job he does, you may not be able to use those cyls in the future with a 4mm stroker crank.
food for thought. |
there's so many damned decisions when building a banshee motor... suppose it all comes down to $$$ 
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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Clarkie
The Day Starts With OZATV !
Joined: 26 Jan 2009
Posts: 1138
Location: Mildura VIC
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| Posted: Wed Jul 22, 2009 9:34 pm Post subject: |
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Thats why I havnt ported mine yet,
To stroke or not to stroke, that is the question
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Wed Jul 22, 2009 9:53 pm Post subject: |
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| Clarkie wrote: | Thats why I havnt ported mine yet,
To stroke or not to stroke, that is the question |
hahaha, and it was a hard question to answer!! but im goin to stroke it later, ill just have to save for it!
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2000 YAMAHA BANSHEE. |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Fri Jul 24, 2009 10:18 am Post subject: |
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yeah, even come crank rebuild time theres a bit of a decision to make.
eg a stock crank and a 4mm crank are almost the same price, so your first thought is "might as well stroke it"
but to do it properly, you need to port it to suit, new pistons, and a cool head with stroker domes if you havent already got one.
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