Ok, so i know a lot of car lingo and such and know quite a bit. The only thing im confused on is stroking.. what exactly are you doing to the engine when you stroke it?

And anothrer is boring, when you hear of boring .030 (thirty thousandths) over, do you need to get new pistons when you do that?

 

Installing a crankshaft with a longer throw.

 

As a general rule, boring is making your cylinders bigger (requires bigger pistons) and stroking is using a different crank to increase the travel of the pistons (requires longer rods). I am sure someone will correct me if I am wrong.

 

ok so longer throw...? how? does it pull the piston down further? i cant see it pushing it up further

 

because it pulls it further.

 

It's more than a general rule, it's the definition of boring and stroking.

However, usually stroker cranks use the same rods as the normal crank, but the pistons need to have a different pin height to accommodate the increased distance from the crank centerline at TDC.

 

[QUOTE=EPNCSU2006]It's more than a general rule, it's the definition of boring and stroking.QUOTE]

I am printing this so I can show it to my wife. With any luck, this will convince her that I can be right sometimes.

 

my computer locked up before i could add this:

Stroking an engine is basically increasing the engine’s stroke length by converting over to a longer stroke crank. Take for instance the 302 Ford. A very popular conversion is to go to a 347. The factory stroke of the crankshaft is 3.0 inches to make it become a 347 the stroke is extended to 3.40 inches in length. You need to utilize a different length connecting rod also. Whenever an engine is given more leverage and cubic inches it is going to deliver more torque which is exactly what every street performing vehicle needs. Engine Factory can supply you a stroker with proper machining , balancing and notching of the block to make it trouble free. The nice thing about this set-up is that all the modifications are done internally so your mounting patterns and accessories will all be identical . On the technical end of things, we have some people ask us if there is any oil control problems on the stroker engines. There is a misconception that if the Piston Pin protrudes into the oil rail area that the motor will suck down oil. This is a totally wrong assumption. Most every top Piston Manufacturer designs there stroker pistons this way. They modify the pistons to be more rigid and there oil control is excellent with the correct Rings used.

remember, google is your fiend nextras.


as for your other question, yes, you need new pistons.