No compression after cams

navarro98gt

Member

May 15, 2003

213

3

16

chicago, IL

Aug 24, 2008

#1

• Aug 24, 2008

• #1

I just got off the phone with the shop that’s installing CMS stage 2 n/a cams and he ran into some problems. After installing the cams he ran a full compression test and there was none. Anybody know what would be causing this? I'm going to call him back and get more details and post them but I would like to get some idea's on what might be wrong. Details on the car below.....

1998 Mustang GT
2001 PI heads ported & polished, valve job, ferrea CC valves
Hooker l/t's with o/r X
c&l Plenem
75mm t-body

 

Superhereaux

chicks make me feel inadequate

Founding Member

Jul 30, 2002

538

3

59

South Texas

Aug 24, 2008

#2

• Aug 24, 2008

• #2

sounds like the cam timing is off but can you provide more info?


if one of the valves is open when it shouldn't be that cylinder wont have compression

 

CobraRed_96_GT

Active Member

May 20, 2006

1,421

4

39

UCSD/La Jolla

Aug 24, 2008

#3

• Aug 24, 2008

• #3

Superhereaux said:

sounds like the cam timing is off but can you provide more info?


if one of the valves is open when it shouldn't be that cylinder wont have compression

Click to expand...

Was going to say the same thing, the piston might be at TDC with a valve open due to wrong timing. Stage II cams on an NPI block with the small chamber of a PI head is risky.

 

98COBRA281

10 Year Member

Nov 24, 2007

1,348

30

59

Port St. Lucie, Florida

Aug 24, 2008

#4

• Aug 24, 2008

• #4

did it have any PTV issues? im assuming the cams are pi cams, stage II pi cams with npi flat top pistons mignt be a problem, hopefully it didnt bend any valves

 

FoxRod87

Active Member

Feb 1, 2006

243

1

27

Carolina

Aug 25, 2008

#5

• Aug 25, 2008

• #5

Out of time or bent valves.

 

nyuk98gt

15 Year Member

Oct 10, 2000

1,427

6

79

Chesterfield, MO

Aug 26, 2008

#6

• Aug 26, 2008

• #6

navarro98gt:

Cams are on the wrong sides (left is on right, right is on left)? Did the heads go on at the same time?

Chris

 

navarro98gt

Member

May 15, 2003

213

3

16

chicago, IL

Aug 27, 2008

#7

• Aug 27, 2008

• #7

nyuk98gt said:

navarro98gt:

Cams are on the wrong sides (left is on right, right is on left)? Did the heads go on at the same time?

Chris

Click to expand...

Well he got it figured out. I guess it had something to do with the lash adjusters. The car is up and running and will be getting tuned this afternoon.

 

96GT281

New Member

Apr 12, 2008

0

0

0

Stuart, Fl

Aug 27, 2008

#8

• Aug 27, 2008

• #8

navarro98gt said:

Well he got it figured out. I guess it had something to do with the lash adjusters. The car is up and running and will be getting tuned this afternoon.

Click to expand...

let us know what see puts down