B20/Vtec
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From: Virginia Beach, Virginia fucka
Re: B20/Vtec
Originally Posted by wayne
Actually, yes i did. All I heard was cylinder walls are thin
^ there are a few people on this board who were are are runnin b20s as DD and they are running great. go to www.b20vtec.com and search there.
^ there are a few people on this board who were are are runnin b20s as DD and they are running great. go to www.b20vtec.com and search there.
Team Ultraspeed
Joined: Nov 2002
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From: Nonya (hint: VaBch)
Re: B20/Vtec
For a built motor, nothing is wrong a B20 block that sleeves can't fix. As Wanye said, "there are a few people on this board who were are are runnin b20s as DD and they are running great" It's all in the way the motor is built...and how you treat it afterwards.
As far as running a Turbo'd B20 with a B16's 77.4mm crank...doing so with "off the shelf" pistons...you have to use something close to a 142.8mm rod. Now with that...a 142.8mm rod and a 77.4mm crank will give you a 1.84:1 rod ratio which will help with revs but will def kill your off the line/bottom end torque.
Not to say that it won't work...cause it will. But for every cause, there is an effect.
Also here are some displacement numbers to slow you what will get if you start swapping cranks around.
a B16A 77.4 mm crank with a 84.0 mm bore = 1707.063376cc
a B17A 81.4 mm crank with a 84.0 mm bore = 1804.400214cc
a B18C 87.2 mm crank with a 84.0 mm bore = 1932.969181cc
a B18/20 89.0 mm crank with a 84.0 mm bore = 1973.068310cc
If you truly intend to run a turbo motor then don't worry so much with porting the head. Head porting is not as important to Force Induction motors as it is to N/A motors. Save the money and focus on things like, oiling, cooling, and a stronger bottom end. On a Turbo motor...that's what is going to keep your motor alive!
Enjoy!
As far as running a Turbo'd B20 with a B16's 77.4mm crank...doing so with "off the shelf" pistons...you have to use something close to a 142.8mm rod. Now with that...a 142.8mm rod and a 77.4mm crank will give you a 1.84:1 rod ratio which will help with revs but will def kill your off the line/bottom end torque.
Not to say that it won't work...cause it will. But for every cause, there is an effect.
Also here are some displacement numbers to slow you what will get if you start swapping cranks around.
a B16A 77.4 mm crank with a 84.0 mm bore = 1707.063376cc
a B17A 81.4 mm crank with a 84.0 mm bore = 1804.400214cc
a B18C 87.2 mm crank with a 84.0 mm bore = 1932.969181cc
a B18/20 89.0 mm crank with a 84.0 mm bore = 1973.068310cc
If you truly intend to run a turbo motor then don't worry so much with porting the head. Head porting is not as important to Force Induction motors as it is to N/A motors. Save the money and focus on things like, oiling, cooling, and a stronger bottom end. On a Turbo motor...that's what is going to keep your motor alive!
Enjoy!
Sumospeed #O.G.
Joined: Apr 2003
Posts: 2,514
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From: Va Beach
Re: B20/Vtec
Originally Posted by Yell88CRXsi
For a built motor, nothing is wrong a B20 block that sleeves can't fix. As Wanye said, "there are a few people on this board who were are are runnin b20s as DD and they are running great" It's all in the way the motor is built...and how you treat it afterwards.
As far as running a Turbo'd B20 with a B16's 77.4mm crank...doing so with "off the shelf" pistons...you have to use something close to a 142.8mm rod. Now with that...a 142.8mm rod and a 77.4mm crank will give you a 1.84:1 rod ratio which will help with revs but will def kill your off the line/bottom end torque.
Not to say that it won't work...cause it will. But for every cause, there is an effect.
Also here are some displacement numbers to slow you what will get if you start swapping cranks around.
a B16A 77.4 mm crank with a 84.0 mm bore = 1707.063376cc
a B17A 81.4 mm crank with a 84.0 mm bore = 1804.400214cc
a B18C 87.2 mm crank with a 84.0 mm bore = 1932.969181cc
a B18/20 89.0 mm crank with a 84.0 mm bore = 1973.068310cc
If you truly intend to run a turbo motor then don't worry so much with porting the head. Head porting is not as important to Force Induction motors as it is to N/A motors. Save the money and focus on things like, oiling, cooling, and a stronger bottom end. On a Turbo motor...that's what is going to keep your motor alive!
Enjoy!
As far as running a Turbo'd B20 with a B16's 77.4mm crank...doing so with "off the shelf" pistons...you have to use something close to a 142.8mm rod. Now with that...a 142.8mm rod and a 77.4mm crank will give you a 1.84:1 rod ratio which will help with revs but will def kill your off the line/bottom end torque.
Not to say that it won't work...cause it will. But for every cause, there is an effect.
Also here are some displacement numbers to slow you what will get if you start swapping cranks around.
a B16A 77.4 mm crank with a 84.0 mm bore = 1707.063376cc
a B17A 81.4 mm crank with a 84.0 mm bore = 1804.400214cc
a B18C 87.2 mm crank with a 84.0 mm bore = 1932.969181cc
a B18/20 89.0 mm crank with a 84.0 mm bore = 1973.068310cc
If you truly intend to run a turbo motor then don't worry so much with porting the head. Head porting is not as important to Force Induction motors as it is to N/A motors. Save the money and focus on things like, oiling, cooling, and a stronger bottom end. On a Turbo motor...that's what is going to keep your motor alive!
Enjoy!
Ammo Pusher
Joined: Jan 2005
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Ammo Pusher
Joined: Jan 2005
Posts: 3,594
Likes: 0
Re: B20/Vtec
Originally Posted by SlowLS
You are wrong. You can, and I would suggest using the b16 oil and water pumps. You can also use the crank to destroke the motor to help with higher revs.
i meant the only thing u cant use are pistons from the b16
but the pumps yes u can use cuz its all b series right?
sorry i didnt clarify that
Asshole Supreme
Joined: Nov 2002
Posts: 4,843
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Re: B20/Vtec
Originally Posted by SlowLS
Now how about a b20/vtec with b16 crank on a NA setup.? What rods and everything would be needed.
.........
Joined: Feb 2003
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