Notices
Engine & Drivetrain VQ Power and Delivery

Hey what does stroking mean?

Thread Tools
 
Search this Thread
 
Old Jan 12, 2007 | 03:47 PM
  #1  
bruce350z's Avatar
bruce350z
Thread Starter
Registered User
 
Joined: Jun 2005
Posts: 138
Likes: 0
From: california
Default Hey what does stroking mean?

I hear people talking about stroking an engine from 3.5 to 3.8 liter. What does that mean? How does it work?
Reply
Old Jan 12, 2007 | 03:52 PM
  #2  
davidf's Avatar
davidf
New Member
20 Year Member
iTrader: (18)
 
Joined: Dec 2005
Posts: 5,668
Likes: 0
From: Beaumont, Texas
Default

I hope your ready for some funny remarks with that title.
Reply
Old Jan 12, 2007 | 03:53 PM
  #3  
tylerdurden07's Avatar
tylerdurden07
Registered User
iTrader: (3)
 
Joined: Dec 2006
Posts: 830
Likes: 0
From: Alexandria, VA
Default

Rub it a couple times and it'll grow larger maybe? punch it a lil?
Reply
Old Jan 12, 2007 | 03:54 PM
  #4  
dimebagdolf's Avatar
dimebagdolf
Registered User
iTrader: (4)
 
Joined: Sep 2004
Posts: 422
Likes: 0
From: Northern Califas
Default

LOLOLOLOL!!!!

I almost responded the same way but here's the definition from Wikipedia

A Stroker kit is an aftermarket assembly that increases the displacement of a Reciprocating engine by lengthening the stroke of the piston. This is done by using a different crankshaft where the connecting rods have a greater radius to the axis of rotation of the crankshaft. While this increases displacement and torque it can potentially lower the limit to which the motor can rev safely compared to the stock configuration. The main advantages of using a stroker kit when rebuilding an engine are that one won't have to change to a larger engine block to significantly increase displacement and one can retain many existing parts from the previous engine.

A typical complete stroker kit is comprised of the crankshaft, connecting rods, pistons, piston pins, main bearings, rod bearings, and piston rings. This assembly is also called "the rotating assembly" or "the bottom end".
Reply
Old Jan 12, 2007 | 04:25 PM
  #5  
THE TECH's Avatar
THE TECH
Registered User
iTrader: (154)
 
Joined: Jun 2003
Posts: 10,735
Likes: 0
From: Hills of Anaheim
Default

If you don't know, I'm not gonna tell you.
Reply
Old Jan 12, 2007 | 04:34 PM
  #6  
UGOTZ'D's Avatar
UGOTZ'D
Registered User
 
Joined: Nov 2006
Posts: 1,574
Likes: 0
From: THE FUK U JUS CALL ME BISH?,NC
Default

Originally Posted by dimebagdolf
LOLOLOLOL!!!!

I almost responded the same way but here's the definition from Wikipedia

A Stroker kit is an aftermarket assembly that increases the displacement of a Reciprocating engine by lengthening the stroke of the piston. This is done by using a different crankshaft where the connecting rods have a greater radius to the axis of rotation of the crankshaft. While this increases displacement and torque it can potentially lower the limit to which the motor can rev safely compared to the stock configuration. The main advantages of using a stroker kit when rebuilding an engine are that one won't have to change to a larger engine block to significantly increase displacement and one can retain many existing parts from the previous engine.

A typical complete stroker kit is comprised of the crankshaft, connecting rods, pistons, piston pins, main bearings, rod bearings, and piston rings. This assembly is also called "the rotating assembly" or "the bottom end".
when i stroke i increase my displacement!
Reply
Old Jan 12, 2007 | 04:51 PM
  #7  
jtabraham's Avatar
jtabraham
Registered User
iTrader: (46)
 
Joined: Jul 2006
Posts: 2,930
Likes: 1
From: Atlanta
Default

Stroking makes it bigger, plain and simple
Reply
Old Jan 12, 2007 | 04:58 PM
  #8  
Tenac1ousZ's Avatar
Tenac1ousZ
Registered User
iTrader: (2)
 
Joined: Apr 2005
Posts: 917
Likes: 0
From: Sunny, smoggy California
Default

Stroking is for those who cannot get force induction
Reply
Old Jan 12, 2007 | 05:04 PM
  #9  
davidv's Avatar
davidv
Registered User
iTrader: (2)
 
Joined: Jun 2004
Posts: 42,753
Likes: 11
From: Tucson, AZ
Question

Originally Posted by THE TECH
If you don't know, I'm not gonna tell you.
Tell us. How do you increase displacement without boring the cylinders?
Reply
Old Jan 12, 2007 | 06:39 PM
  #10  
absolute00matt's Avatar
absolute00matt
Registered User
 
Joined: Nov 2006
Posts: 50
Likes: 0
From: Los Angeles
Default

Get someone else to stroke it - u'll have better results...
Reply
Old Jan 12, 2007 | 06:57 PM
  #11  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

Sroking is increasing "swept' Volumn. The distance from TDC to BDC generally by means of a Crank with additional Stroke. Sroking increases Cubic displacement as does boring, BUT u can just bore so much til ur piston is floating in Water/Coolant. Also, u are playing with the "square" ----- The square being the ratio of stroke to Bore, Some Bore/Stroke ratios work better than others------The Chevy motors were a good example----All the same but different Bore/Stroke---265-283--rare 302--327--350-----The 327 was the majic Number, It had a perfect Ratio ----Super Hi Rever----Then the 383 "Stroker" 400 Crank in a 350 ---It had a BiG Blk feel that could Rev.
Reply
Old Jan 12, 2007 | 07:05 PM
  #12  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

I could write a book on this ---Pistons have to be changed or Wrist Pin relocated so u dont Crash into Valves on TDC,,,, and because u are dealing with a different radius , Many times u have to clearence so the rods dont hit the blk etc at 90 degrees BTC. This is strocking in general ---There are kits that are less radical that eliminate some of the more intense modifications

Last edited by Eazzy; Jan 12, 2007 at 09:29 PM.
Reply
Old Jan 12, 2007 | 07:11 PM
  #13  
Sean's Avatar
Sean
Registered User
 
Joined: Jan 2006
Posts: 8,719
Likes: 2
From: nj
Default

327, best ever
Reply
Old Jan 12, 2007 | 07:13 PM
  #14  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

That was because of a perfect Bore/Stroke Combo
Reply
Old Jan 12, 2007 | 07:16 PM
  #15  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

Perfect for reving---Not so perfect for Torque ---Hence --The 350 ---Win some loose some
Reply
Old Jan 12, 2007 | 07:17 PM
  #16  
Sean's Avatar
Sean
Registered User
 
Joined: Jan 2006
Posts: 8,719
Likes: 2
From: nj
Default

Originally Posted by Eazzzzzzy
That was because of a perfect Bore/Stroke Combo

yes, I always wanted to build my own engine from scratch...with the piston surface as big as a dinner plate and a short stroke.....and it would use the radial pattern rather than the V I really don't know why there aren't radial engines in some hi power cars....
Reply
Old Jan 12, 2007 | 07:19 PM
  #17  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

With engine Mods ---- what u gain u loose elsewhere With every action there is an equal reaction
Reply
Old Jan 12, 2007 | 09:23 PM
  #18  
Kwame's Avatar
Kwame
New Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (78)
 
Joined: Jun 2004
Posts: 5,219
Likes: 19
From: New York
Default

Originally Posted by Tenac1ousZ
Stroking is for those who cannot get force induction
I am hoping this is a sarcastic remark.
Reply
Old Jan 12, 2007 | 09:27 PM
  #19  
Eazzy's Avatar
Eazzy
Registered User
iTrader: (8)
 
Joined: Jan 2005
Posts: 8,268
Likes: 6
From: Barackville
Default

Originally Posted by kwame@z1
I am hoping this is a sarcastic remark.
Or an Alcohol induced one ------
Reply
Old Jan 13, 2007 | 07:20 AM
  #20  
davidf's Avatar
davidf
New Member
20 Year Member
iTrader: (18)
 
Joined: Dec 2005
Posts: 5,668
Likes: 0
From: Beaumont, Texas
Default

Strokings alright but I rather get blown.
Reply



All times are GMT -8. The time now is 07:12 AM.