i did a compression check and it was 93+ all the way across . my motor has 193,000 miles , it was rebuilt about 10 months ago .... should i be able to run a turbo at about 6psi safely. its a 93 d16 ex

 

It was just rebuilt...what do you mean by that. Cuz 93 is low...it is good that the numbers are even all the way across but 93 is way to low....

 

so 93 on the compression check isnt good to run a turbo?


[Modified by spladam02, 2:18 AM 12/3/2002]

 

93 just seems low like your rings never seated correctly. Most good compression checks come up in the 180-220 range. Perhaps you didn't do the check properly?

How long did you crank the engine over for?

 

You just rebuilt the motor??? Was the battery fully charged??? Seems low to me . But its good that they are all the same, but could also mean the person who rebuilt the motor f-ed up 4 times.

 

I didnt fully crank i only half cranked , didnt let it kick over . i thought thats what you were supposed to do and the best read out being 100

 

i thought u had to crank it 3 times??


kinda like

*whoom...whooom...whooom...stop!*


[Modified by BeerBaron105, 9:30 PM 12/2/2002]

 

hehe no here is how you do it
pull the fuse in the underdash box for the fuel pump, put the tester in, have whoever is cranking hold the throttle all the way down.
then have them crank 3-4 times.
oh make sure the engine is fully warm too


[Modified by KAMiN, 6:32 PM 12/2/2002]

 

I am pretty sure you have to crank it until the needle pretty much stops rising.

Do that and tell us what happens.

 

so i half crank it 3 times without reseting the guage?

 

define half crank, friggen turn the key all the way until u hear whoosh whoosh whoosh then stop! lol

 

I was taught to take out all four spark plugs and test each cylinder one by one. And just turn the key and crank it until the needle stops rising.

Simplest way.

 

listen to hybridreams he's got it right. and its usually 4-6 cranks of the engine.

 

To make a compression test, the engine needs to be at normal operation temperature, then you need to take out all the spark plugs and disable the ignition system, then put the Compression Gauge in each cilynder and put the trottle wide open and crank the engine at least 7 times. You need to see if the gauge goes up quickly or if it goes slow. The battery should be fully charged. Your readings need to be equal or with a little diference.

 

Knight2000--

Is that like a leak down test your describing? what's the procedures/scale for making sure your cylinders are leaking at an acceptable rate? (edit) for the b16a..


[Modified by VR6T, 11:56 AM 12/15/2002]