Compression Test Results

sleepydsm · 06-06-2005

1992 Tsi AWD 5spd 6bolt 139k mi
I finally did a compression test today on my car:
Cold, Dry test
#1:105
#2:139
#3:140
#4:148
Wet Test (capful of oil)
#1:135
#2:155
#3:170
#4:175

No wonder my car is so slow...

This means worn rings right (they all went up with wet test, not stay the same i.e. a valve issue)? Time for rebuild...

unreal808 · 06-06-2005

No rebuild, just more boost?

J/K

sleepydsm · 06-06-2005

haha.

MustGoFaster · 06-06-2005

And some NAWWZ!

sleepydsm · 06-06-2005

yeah thatd be tight yo. lemme bust out my pro fogger fo hizzle 500 shot.

MustGoFaster · 06-06-2005

Sound like you have a plan to even that compression out. To zero.

At-Least-It's-An-Evo · 06-07-2005

Wasn't that motor just rebuilt when Blake owned it. (by shindley)

xluciusx · 06-07-2005

ouch man

**Shane@DBPerformance** · 06-07-2005

Wet test is kinda useless on a motor with dished pistons. The oil just sits in the dish and raises the compression.

blageo23 · 06-07-2005

Sounds like your engine is gonna blow up! Just throw a 2.4 in there and be done!!

TheBlizzard · 06-07-2005

Thread cleaned up. Keep this thread on topic from here on out. If you aren't giving sleepydsm opinions on his results then shut up and start your own thread. If you want to know how to compression test your own car then start another thread addressing that issue on your own and we will be glad to help.

CRAIG

sleepydsm · 06-07-2005

Quote:

Originally Posted by BuyMySC300

Wasn't that motor just rebuilt when Blake owned it. (by shindley)

Blake didn't mention it to me? I probably screwed it up though.

**Kracka** · 06-07-2005

It isn't *that* bad except for #1. The engine has to be at full operating temp to get accurate results. Drive the car around for 20 mins and try it again.

blageo23 · 06-07-2005

yah we def didnt do that. we'll try it again and post up new ones.

Raptor · 06-07-2005

Glad someone said something about that, it should'd do anything to even out the cylinders though which is actually the bigger issue. Like Shane mentioned, the wet test is somewhat tricky with any dish to the pistons. there is typically .300 above the ring to the crown that oil can ride in without going into the center, but it is a bit tricky to get it in there accurately. I have a few tricks to do it, stop by the shop and I can tell you how if you like.

john · 06-07-2005

I will let you know what kind of difference lower compression makes. I will be testing on a car with (4-1) 140-140-130-90.

sleepydsm · 06-07-2005

Sounds good. I am redoing the compression test tomorrow, at operating temp just for shits.

blageo23 · 06-08-2005

SLEEPYDSM's new test numbers:
1-120
2-130
3-150
4-150
Rings? Headgasket? Is his next step a leakdown test?

**JET** · 06-08-2005

Run 'er til she blows! It is probably valve seals or rings though.

**Kracka** · 06-08-2005

Ehh, I've seen much worse. I'd leave it and continue driving it as it sits unless you want to be super picky. Boost makes up for compression loss...

ASS (inside joke)