2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

ran compression tonight

Thread Tools
 
Search this Thread
 
Old Feb 1, 2008 | 09:23 PM
  #1  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
ran compression tonight

#1-160
#2-160
#3-170
#4-170
if i blew a intake gasket can coolent get into the head that way?
Reply
Old Feb 1, 2008 | 09:32 PM
  #2  
Red2.4SS's Avatar
Senior Member
 
Joined: 01-02-06
Posts: 16,982
Likes: 0
From: SK
If something is leaking with the intercooler cores it could pull coolant into the intake air that way.
Reply
Old Feb 1, 2008 | 09:34 PM
  #3  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
maybe i need to look in to that then. thanks for the info
Reply
Old Feb 2, 2008 | 02:29 AM
  #4  
Area47's Avatar
Rent me! per hour
 
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
numbers seem low for some reason. however they are withing a certain percentage of each other to be cool.

do you have chocolate milk in the pan? pull the radiator resivoir cap off and let the car warm up. check for bubbles that don't stop. this is a simple check. hell do a leak down, this will give some what of a better answer.

what makes you think it's toast?
Reply
Old Feb 2, 2008 | 06:53 AM
  #5  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
Originally Posted by Area47
numbers seem low for some reason. however they are withing a certain percentage of each other to be cool.

do you have chocolate milk in the pan? pull the radiator resivoir cap off and let the car warm up. check for bubbles that don't stop. this is a simple check. hell do a leak down, this will give some what of a better answer.

what makes you think it's toast?
i havent changed the oil yet, i will try to do a leak down test today, the only thing i got to do was a compression test because i use my firends shop and he works nights so i had limited time there last night he is off to night. i don't know if is toast of not it was really milky under the oil cap that is about it.
Reply
Old Feb 2, 2008 | 09:50 AM
  #6  
Red2.4SS's Avatar
Senior Member
 
Joined: 01-02-06
Posts: 16,982
Likes: 0
From: SK
Originally Posted by boostnss
i havent changed the oil yet, i will try to do a leak down test today, the only thing i got to do was a compression test because i use my firends shop and he works nights so i had limited time there last night he is off to night. i don't know if is toast of not it was really milky under the oil cap that is about it.
That white milky sludge is a sign of water in the oil!!!

DO NOT DRIVE IT!!!
You may have a blown head gasket.
Check the coolant reservior for bubling as Area said. Has your coolant been dissapearing?
Any unusually high amout of exhaust steam, even after fully warmed up?

I would also reccomend the leakdown test.
Reply
Old Feb 2, 2008 | 01:12 PM
  #7  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
Originally Posted by Red2.4SS
That white milky sludge is a sign of water in the oil!!!

DO NOT DRIVE IT!!!
You may have a blown head gasket.
Check the coolant reservior for bubling as Area said. Has your coolant been dissapearing?
Any unusually high amout of exhaust steam, even after fully warmed up?

I would also reccomend the leakdown test.
no coolent is good and no white smoke and it compressed fine, going to change the oil and check for bubbles today.
Reply
Old Feb 2, 2008 | 01:20 PM
  #8  
Area47's Avatar
Rent me! per hour
 
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
m-dubs car has the same issue. his car is fine. it doesn't get hot, or do anything stupid. it has to do with condensation. being that we in the midwest suffer from irratic weather changes. water is bound to find it's way into weird places.
Reply
Old Feb 2, 2008 | 01:53 PM
  #9  
zrated89's Avatar
Senior Member
iTrader: (15)
 
Joined: 10-01-07
Posts: 4,184
Likes: 1
From: newportnews va
170 is kinda low though, when i popped my oil dipstick out (i dont think i snapped it down all the way) everyone said do a comp test i did one at my shop and had over 200psi in all cylinders
Reply
Old Feb 2, 2008 | 01:56 PM
  #10  
Witt's Avatar
Senior Member
 
Joined: 03-03-06
Posts: 4,958
Likes: 0
From: Pittsburgh, PA
Originally Posted by boostnss
#1-160
#2-160
#3-170
#4-170
if i blew a intake gasket can coolent get into the head that way?
No, thats pushrod engines. No coolant in our intake manifolds outside of the supercharger's coolant system. I wouldn't worry about it until you see foam on the dipstick.
Originally Posted by Area47
numbers seem low for some reason.
Mine pulls about 190psi with 10-1 compression pistons. Wes' was ~165 iirc with stock ones.
Reply
Old Feb 2, 2008 | 02:34 PM
  #11  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
so is my compression fine? some people are telling me 170 is low others say it's fine.
Reply
Old Feb 2, 2008 | 02:45 PM
  #12  
lnf08ecotec's Avatar
Senior Member
 
Joined: 11-30-06
Posts: 986
Likes: 0
From: NC
Originally Posted by boostnss
so is my compression fine? some people are telling me 170 is low others say it's fine.
its fine; they are all near e/o...and if they were all low...u'd definately know it......
Reply
Old Feb 2, 2008 | 02:56 PM
  #13  
Rippin07's Avatar
Senior Member
 
Joined: 06-22-07
Posts: 616
Likes: 1
From: Saskatoon, Saskatchewan
The white milky crap under your cap is most likely condensation. This occurs mostly when the weather gets cooler and more often than not the car is driven on short trips. The condensation in the motor evaporates and rises to the top of the engine (valve cover) and settles on the cap etc, as the engine cools it condenses into the milk you see. Your car is fine, this is a normal thing to happen when the weather cools down.
Reply
Old Feb 2, 2008 | 03:09 PM
  #14  
boostnss's Avatar
Thread Starter
Senior Member
 
Joined: 07-19-06
Posts: 902
Likes: 0
From: Kansas
i want to thank everyone for the help. i guess i shouldn't jump to conclusions with out doing tests first.
Reply
Old Feb 2, 2008 | 03:26 PM
  #15  
hungryhip-ccp's Avatar
Senior Member
iTrader: (2)
 
Joined: 05-31-07
Posts: 4,339
Likes: 0
From: SoCal, Lancaster
Originally Posted by boostnss
so is my compression fine? some people are telling me 170 is low others say it's fine.
mine were all 140ish and the car was brand new when i did mine... it had 1600mi on it maybe my gauge was wrong... alldata says there all supposed to be over 100psi so i dont know how you guys are seeing allmost double stock specs
Reply
Old Feb 2, 2008 | 03:28 PM
  #16  
Area47's Avatar
Rent me! per hour
 
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
i have tested mine twice. two different gauges. same results.

200 across the board.

::shrugs:: got me d00ds
Reply
Old Feb 2, 2008 | 03:30 PM
  #17  
Sharkey's Avatar
Senior Member
iTrader: (1)
 
Joined: 10-27-07
Posts: 5,681
Likes: 266
From: Abbotsford BC
alldata states the minimum is 100psi, but really thats too low.

i know my buddys l61 is 160 with aftermarket cams, and thats 10:1 compression.
Reply
Old Feb 2, 2008 | 03:31 PM
  #18  
bigjoe25's Avatar
Junior Member
 
Joined: 05-27-05
Posts: 452
Likes: 0
From: georgia
mine were over 200 in cylinder 1 and 4 and 115 in 2 and 100 in three but i had two cracked pistons
Reply
Old Feb 3, 2008 | 11:00 PM
  #19  
Red2.4SS's Avatar
Senior Member
 
Joined: 01-02-06
Posts: 16,982
Likes: 0
From: SK
I thought you were talking about the oil itself being milky.

A little on the cap is normal as stated above.
There is always some moiture in the engine from the small amount of normal blowby, that is harder to get rid of when its cold.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
taintedred07
2.0L LNF Performance Tech
32
May 28, 2022 03:47 AM
hacadacalopolis
Parts
8
Oct 28, 2015 06:09 PM
Tupp
Suspension
5
Sep 30, 2015 08:18 PM
Adiaz1ss
Problems/Service/Maintenance
4
Sep 26, 2015 11:51 PM
jmelton327
Drivetrain
2
Sep 26, 2015 10:04 PM




All times are GMT -4. The time now is 12:10 AM.