bored out engine?
5th Gear Member
Joined: Nov 2006
Posts: 3,080
From: Bay Minette Alabama
RE: bored out engine?
You only want to bore an engine if your building it just to clean up the cylinder walls really good. If you bore your engine .030 over you'll gain about 4 cubic inches and no horse power.
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
RE: bored out engine?
ORIGINAL: gilbert00
everyone keeps telling me i should bore out my engine?
what does that exactly mean?
what does it do?
does it gain hp?
is it bad for your engine?
everyone keeps telling me i should bore out my engine?
what does that exactly mean?
what does it do?
does it gain hp?
is it bad for your engine?
Just curious because while it will help you gain HP/TQ it's not as simple as it sounds. You will need to do a complete tear down of the motor, possibly use sleeves for the newly bored pistons as the block will be weakened with the thinning of the walls, oversized rings and/or pistons and since you're at it, you may as well put all new forged components into the block.
Stroking also includes a new crankshaft, new rods and perhaps a different oil pan and valves. It's usually best to match the cam shaft with the stroke change to take full advantage of the longer stroke. Since stroking the motor usually means you increase your compression ration, depending on how much stroke you add you may push your way out of a super charger or turbo.
3rd Gear Member
Joined: Jul 2006
Posts: 721
From: Texas
RE: bored out engine?
When you bore an engine, the cylinders are enlarges a very slight ammount ( .030-.060 normally) Just to clear out any imperfections in the bores. This is done when rebuilding an engine and unless you are theres absolutely no need to do it. Boring will give you almost no hp gains(mabey1-5 hp ifyour lucky)and is done only for cylinder wall maintinence.
They might be confusing that with a stroker kit. A stroker kit will give you a significant gain in displacement. It normally does this by making the crank stroke longer. You can see some decent power gains with a stroker kit.
They might be confusing that with a stroker kit. A stroker kit will give you a significant gain in displacement. It normally does this by making the crank stroke longer. You can see some decent power gains with a stroker kit.
Pro. B.S. caller outer
Joined: May 2004
Posts: 9,644
From: IL
RE: bored out engine?
ORIGINAL: Derf00
Who is "everyone"? A bored out engine is can also be referred to a stroked engine. Bored means the piston walls are ground to allow a larger diameter combustion chamber, a stroked engine means the length of the combustion stroke is longer than stock.
Just curious because while it will help you gain HP/TQ it's not as simple as it sounds. You will need to do a complete tear down of the motor, possibly use sleeves for the newly bored pistons as the block will be weakened with the thinning of the walls, oversized rings and/or pistons and since you're at it, you may as well put all new forged components into the block.
Stroking also includes a new crankshaft, new rods and perhaps a different oil pan and valves. It's usually best to match the cam shaft with the stroke change to take full advantage of the longer stroke. Since stroking the motor usually means you increase your compression ration, depending on how much stroke you add you may push your way out of a super charger or turbo.
ORIGINAL: gilbert00
everyone keeps telling me i should bore out my engine?
what does that exactly mean?
what does it do?
does it gain hp?
is it bad for your engine?
everyone keeps telling me i should bore out my engine?
what does that exactly mean?
what does it do?
does it gain hp?
is it bad for your engine?
Just curious because while it will help you gain HP/TQ it's not as simple as it sounds. You will need to do a complete tear down of the motor, possibly use sleeves for the newly bored pistons as the block will be weakened with the thinning of the walls, oversized rings and/or pistons and since you're at it, you may as well put all new forged components into the block.
Stroking also includes a new crankshaft, new rods and perhaps a different oil pan and valves. It's usually best to match the cam shaft with the stroke change to take full advantage of the longer stroke. Since stroking the motor usually means you increase your compression ration, depending on how much stroke you add you may push your way out of a super charger or turbo.