can a compression test be done w/ the engine out of the car?

[86_sports_1jz]

i need to do a compression test on my 1j b4 i start buying all my parts but my engine is out of the car and its just sitting on a pallet. could i just hook up the compression tester and turn the crank until it compresses or is there another way to do it? what are some good compression numbers so i know if my 1jz is still good?

 

[ToyoHabu]

if you can mount the starter just find a battery and jumper cables and go to town. I have even seen people run engines on pallets

 

[souprat]

it wouldnt work with you just turning the crank by hand, unless your such a badass that you can spin it up to 250rpm. you have to get the starter to turn it over.

 

[86_sports_1jz]

i have no flywheel to turn the crank to use the starter

 

[AF1JZ]

Maybe you can get an impact gun and put it on the crank bolt and have at it? I don't know if you can get the RPM's up high enough though. Worth a try.

 

[darkspeed]

and maybe pull all the plugs except for the cylinder you are checking (that'll make it easier to spin over with the air wrench). i've never tried it myself

 

[Zazzn]

mount the starter, jump the cables for the starer, make sure tehre's some oil in there.. and thats how i've done them in the pass.

 

[spipedong]

I had a thread like this last week. http://www.supramania.com/forums/showthread.php?t=37014

 

[AF1JZ]

i have no flywheel to turn the crank to use the starter

He can't because of the lack of flywheel

 

[86_sports_1jz]

can it be done w/ out flywheel?

 

[AF1JZ]

can it be done w/ out flywheel?

If you want to use the starter to crank it, you will need the flywheel because that's what the starter uses to turn the engine over.

 

[drunk_medic]

Get a flywheel. You know you want one for the swap. Hell, you NEED one. Don't fight it.

 

[BorHor]

Yeah just get the flywheel because you are going to need one anyways.

 

[The Reaper]

^^^ word

 

[86_sports_1jz]

yea i know but its gonna take like a month cuz i ordered a jun flywheel so thats why i wanna know if i can do it w/ out the flywheel

 

[souprat]

yes, but you wont be able to use the starter. you will have to find another way to spin up the motor.

 

[AF1JZ]

Hell, you can probably see if anyone has the automatic flexplate that they aren't using and bolt that on. I have one at my home. But, I'm currently deployed. See if you can find one.

 

[Nucleon]

For a proper compression check, the engine must be at operation temperature! The numbers from a cold engine are often useless.

 

[BIFF TANNEN]

Maybe you can get an impact gun and put it on the crank bolt and have at it? I don't know if you can get the RPM's up high enough though. Worth a try.

that wont work...trust me

 

[Dirgle]

For a proper compression check, the engine must be at operation temperature! The numbers from a cold engine are often useless.

I was wondering if somebody was going to mention this.