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Hey what does stroking mean?

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Old 01-12-2007, 03:47 PM
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bruce350z
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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?
Old 01-12-2007, 03:52 PM
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davidf
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I hope your ready for some funny remarks with that title.
Old 01-12-2007, 03:53 PM
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tylerdurden07
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Rub it a couple times and it'll grow larger maybe? punch it a lil?
Old 01-12-2007, 03:54 PM
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dimebagdolf
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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".
Old 01-12-2007, 04:25 PM
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THE TECH
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If you don't know, I'm not gonna tell you.
Old 01-12-2007, 04:34 PM
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UGOTZ'D
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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!
Old 01-12-2007, 04:51 PM
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jtabraham
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Stroking makes it bigger, plain and simple
Old 01-12-2007, 04:58 PM
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Tenac1ousZ
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Stroking is for those who cannot get force induction
Old 01-12-2007, 05:04 PM
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davidv
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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?
Old 01-12-2007, 06:39 PM
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absolute00matt
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Get someone else to stroke it - u'll have better results...
Old 01-12-2007, 06:57 PM
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Eazzy
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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.
Old 01-12-2007, 07:05 PM
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Eazzy
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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; 01-12-2007 at 09:29 PM.
Old 01-12-2007, 07:11 PM
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Sean
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327, best ever
Old 01-12-2007, 07:13 PM
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That was because of a perfect Bore/Stroke Combo
Old 01-12-2007, 07:16 PM
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Perfect for reving---Not so perfect for Torque ---Hence --The 350 ---Win some loose some
Old 01-12-2007, 07:17 PM
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Sean
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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....
Old 01-12-2007, 07:19 PM
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With engine Mods ---- what u gain u loose elsewhere With every action there is an equal reaction
Old 01-12-2007, 09:23 PM
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Kwame
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Originally Posted by Tenac1ousZ
Stroking is for those who cannot get force induction
I am hoping this is a sarcastic remark.
Old 01-12-2007, 09:27 PM
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Eazzy
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Originally Posted by kwame@z1
I am hoping this is a sarcastic remark.
Or an Alcohol induced one ------
Old 01-13-2007, 07:20 AM
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Strokings alright but I rather get blown.


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