Big Bore & Re-Bore: Understand The Differences And Find The Right Fit For Your Vehicle By Pearlvin Ashby
உங்கள் வாகனத்தின் இன்ஜினை கஸ்டமைஸ் செய்ய விரும்பினால் அதற்கு இரண்டு விதமான ஆப்ஷன்கள் உள்ளன. பிக் போர் மற்றும் ரீபோர் என அவை அழைக்கப்படுகிறது. இந்த இரண்டு விதமான கஸ்டமைசேஷனிற்கும் என்ன வித்தியாசம்? இதில் உங்கள் வாகனத்துக்கு ஏத்த கஸ்டமைஷேஷனை தேர்வு செய்வது எப்படி? என்ற விரிவான விளக்கத்தை தான் இந்த வீடியோவில் வழங்கியுள்ளோம்
#bigbore #rebore #nmwracing #enginecustomization #bikeengine #driveSparktamil
~ED.70~
உங்கள் வாகனத்தின் இன்ஜினை கஸ்டமைஸ் செய்ய விரும்பினால் அதற்கு இரண்டு விதமான ஆப்ஷன்கள் உள்ளன. பிக் போர் மற்றும் ரீபோர் என அவை அழைக்கப்படுகிறது. இந்த இரண்டு விதமான கஸ்டமைசேஷனிற்கும் என்ன வித்தியாசம்? இதில் உங்கள் வாகனத்துக்கு ஏத்த கஸ்டமைஷேஷனை தேர்வு செய்வது எப்படி? என்ற விரிவான விளக்கத்தை தான் இந்த வீடியோவில் வழங்கியுள்ளோம்
#bigbore #rebore #nmwracing #enginecustomization #bikeengine #driveSparktamil
~ED.70~
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NewsTranscript
00:00 Big bore or Re bore?
00:04 Oh hey hi, I am your Palvin. Today we are at the Ennandhubli garage
00:08 When I was thinking about a car that I can big bore, some people asked me why I should not do Re bore
00:16 So today's video is about Big bore and Re bore
00:23 So watch this video fully
00:25 Big bore is basically a big piston and a cylinder head
00:37 So the piston goes inside and comes out
00:41 We will go into Re bore by keeping the big bore in one corner
00:44 Now I am showing you about the bore. This is a stock bore
00:49 So the width of each bore will be different. I will show you how
00:54 6.5mm and 4.80mm
00:58 So each bore will be different
01:01 So basically this is a stock bore
01:05 Some companies will do 1mm or 2-3mm bore
01:12 So you can do this bore as you want
01:18 So 1mm or 2mm or 3mm will be maximum
01:22 After that this cylinder head will be re-bored
01:27 After that you can do 1mm or 2mm bore
01:32 Now let's see the big bore method
01:34 This is a method of Re bore
01:38 So let's see how to do big bore
01:42 They will give this cylinder head to this piston
01:46 For example, let's take Himalayan
01:50 So Himalayan bore will be 78mm
01:54 In NMW, it will be 85mm or 86mm
01:59 So 86mm is like I said
02:02 You can increase the stock cylinder head by 1 or 2 points
02:08 But if you do this massively, the piston will be big bore
02:12 So they will make a piston head that fits this
02:16 That's how you can do this
02:19 So if you do this in the original head
02:24 What will happen is
02:27 The cylinder head will be weak and it won't be long lasting
02:30 And there is a thing in this Re bore
02:33 They will do this with a machine called sleeve
02:38 If you do this with a proper machine
02:42 It will be uneven and it won't be long lasting
02:45 It will be misfiring and smoke will come
02:48 So there are many things like this
02:51 But big bore is a new cylinder head
02:55 And you are doing this with a piston
02:58 So this bore is actually doing the CC of the vehicle
03:05 So when you play the bore width and stroke length
03:12 You are playing the CC of the vehicle
03:15 The vehicle might be an RN5 or a Himalayan or an Interceptor
03:20 But when you play with this bore
03:23 The CC of the vehicle will be more
03:26 For example, you can convert a RN5 to a max to max 220 CC
03:29 With the help of this big bore kit
03:32 So this is the difference between big bore and Re bore
03:37 So there are many kits in big bore
03:40 You will get a cylinder head
03:43 Because you can increase the length from 5-6mm
03:46 From stock to 8mm
03:49 So you will get a cylinder head from the company
03:52 So they give the kit from the company
03:55 And there is a high lift cam
03:58 So about this cam
04:01 So basically this cam
04:04 This width is the duration
04:07 How far the fuel has to go
04:10 And this height is the depth it has to open and close
04:14 So this is the high lift cam
04:17 So this durability with this length
04:20 So when you go to a big bore
04:23 You will need more fuel
04:26 So that duration will play in this
04:29 So for that you will need big walls
04:32 So this wall will be there
04:35 So basically this wall is bigger than the normal wall
04:38 Because it is in the big bore kit
04:41 So in that too, whether it is stock or normal
04:44 This is the inlet wall
04:47 This inlet wall is bigger than the normal exhaust valve
04:50 The inlet wall will be bigger
04:53 So whether it is stock or big bore
04:56 This is for your knowledge
04:59 So this fuel mixture comes from the inlet
05:02 With the help of this cam
05:05 And the performance, cc power comes from that
05:08 So to work in this valve
05:11 A normal spring will work
05:14 So this is called a high tension spring
05:17 So what happens when you put this
05:20 If you put this, it will be soft
05:23 It will release and come up
05:26 So when it is high tension
05:29 The releasing speed is very high
05:32 So that is why it is called high tension spring
05:35 That is given by stock in NMW
05:38 I have not researched, many brands do not have that
05:41 So this is the piston
05:44 So this is a forged piston
05:47 There are normal pistons and aluminum pistons
05:50 So for this forge, high performance
05:53 In the piston material
05:56 In the forge itself
05:59 There are no piston rings in normal vehicles
06:02 It is very soft and light
06:05 So this is called a copper gasket
06:08 So why is it called copper
06:11 Copper is generally heat resistant
06:14 So when you put this big bore kit
06:17 It has a little heat performance
06:20 So to withstand that heat
06:23 They give this copper
06:26 So there is no leak, it is flat
06:29 And it is a high resistant heat capacity
06:32 So they give a complete package like this in NMW
06:35 Which is really good
06:38 So this is a proper big bore kit
06:41 Now you would have understood the difference
06:44 What is rebore and big bore kit
06:47 Big bore kit is
06:50 They give the cylinder head according to the piston
06:53 There is a full package, so it is from stage 1 to 6
06:56 According to the power
06:59 Rebore is, in your company's bore
07:02 The piston has already become a little bit
07:05 From that, 1mm or 2mm maximum
07:08 Each manufacturer has limited it
07:11 So they sleep it and put 1 or 2 size
07:14 Piston and do this
07:17 So there are cons in that rebore
07:20 So you have to see if you want to rebore
07:23 Or you have to do a big bore kit and adjust the performance
07:26 So what all is available for this big bore kit
07:29 Scooty lovers, for you, from NMW
07:32 There is for Dio, Aprila RS150
07:35 And also for Yamaha Aerox 155
07:38 So when I say Yamaha
07:41 What all are there for Yamaha
07:44 There is R15 V1, V2, V3 and V4
07:47 So not only that
07:50 In Bajaj, you have NS200, RS200
07:53 In KTM, Duke RRC
07:56 So in this, be it 390, 200 or 125cc
07:59 Big bore kit is available for all these
08:02 And other than that
08:05 In Royal Enfield, you have
08:08 GT, GT250, GT250
08:11 And Interceptor and GT, 650 twins
08:14 For you, be it GT or Super Meteor
08:17 Or your GT650
08:20 You can do 865cc
08:23 Stage 1, 2, 3
08:26 If you want to go beyond that, you have racing performance
08:29 You can do upto stage 6
08:32 But you have to do it according to your needs
08:35 You can do road legal stage 3
08:38 But it will be racing spec
08:41 And other than that, you have Suzuki
08:44 Can't forget Suzuki
08:47 So in Suzuki, you have Gixxer 150
08:50 And also in T-base, you have Apache
08:53 For 180cc and 200cc
08:56 And other than that, last but not least
08:59 The final one
09:02 Hero, how can you forget Hero
09:05 In Hero, you have Impulse
09:08 And Karishma
09:11 What is Karishma for Impulse?
09:14 So in Expulse 200, it is available for 2Wheelers
09:17 And 4Wheelers
09:20 So yeah, Expulse 2Wheelers and 4Wheelers
09:23 So if you liked this information
09:26 Don't forget to follow our Trice Park Tamil channel
09:29 Stay tuned, cheers in another video
09:32 More automotive content is coming
09:35 See ya, bye
09:36 [Music]