compression ratio

Hey fellas. Can anybody explain how compression ratios play into performance, gas mileage, power? Thanks

Also, how do you check your compression ratios?

Usually the higher compression, the more power you get. You also need to use better grade fuel or you will get detonation and things will go boom.

You can have a leakdown test done, but if you just want to know what your car has stock, look in the manual...

The higher the compression, the higher octain gas you need to use, and usually the more power you gain, as well as the gas you use =P

compression also has a lot to do with the life of the engine. More compression and your motor won't last as long until it needs a rebuild again. Less compression and it will last longer than a honda.

Yeah, and it will have less power too...

Yeah, and it will have less power too...

No doubt... its purely choice. Frankly I would go high compression and rebuild after 100k just to be safe.

No point in rebuilding until the engine is running poorly, otherwise you are fixing stuff that ain't broke. If you take good care of the engine and don't beat it like a rented mule it will last way more than 100k. Just keep the coolant and oil full and clean and it'll be good for a while.

No point in rebuilding until the engine is running poorly, otherwise you are fixing stuff that ain't broke. If you take good care of the engine and don't beat it like a rented mule it will last way more than 100k. Just keep the coolant and oil full and clean and it'll be good for a while.

Your right... but still I wouldn't wait too long. I have this everlasting fear of a rod breaking and punching a hole in the engine. :sly:

yeah, I agree a rod making a hole in the block would be a pretty bad thing.