| Author |
Message |
Ken Ross (Kdross)
New member
Username: Kdross
Post Number: 13
Registered: 2-2002
| | Posted on Saturday, April 06, 2002 - 11:43 am: | |
The car is going to the shop on 4/17. |
Paul Newman (Newman)
Junior Member
Username: Newman
Post Number: 125
Registered: 12-2001
| | Posted on Thursday, April 04, 2002 - 12:16 pm: | |
Ken, did you sort out the valve problem yet? |
magoo (Magoo)
Intermediate Member
Username: Magoo
Post Number: 2210
Registered: 2-2001
| | Posted on Tuesday, April 02, 2002 - 7:24 pm: | |
Ken, sounds like the best suggestion yet. |
Paul Newman (Newman)
Junior Member
Username: Newman
Post Number: 112
Registered: 12-2001
| | Posted on Tuesday, April 02, 2002 - 12:32 pm: | |
I agree ther is more to it than an adjustment. The valve is sunk. It sounds like it is recessing up into the pocket or seat causing the clearance to close up. If you can get someone with a borescope, they can look at the valve through the plug hole and tell you exactly what the problem is before you damage something. |
magoo (Magoo)
Intermediate Member
Username: Magoo
Post Number: 2197
Registered: 2-2001
| | Posted on Monday, April 01, 2002 - 10:46 pm: | |
If there is a power loss due to a exhaust valve being open it would show up on a compression test. |
Brian stewart (Eurocardoc)
Junior Member
Username: Eurocardoc
Post Number: 243
Registered: 11-2001
| | Posted on Monday, April 01, 2002 - 6:44 pm: | |
My question would be- "why is the valve out of adjustment?" The adjustment is a very positive procedure, if the clearance is wrong either someone mucked up or something broke or....
Not enough info here. |
Frank Parker (Parkerfe)
Member
Username: Parkerfe
Post Number: 747
Registered: 9-2001
| | Posted on Monday, April 01, 2002 - 4:18 pm: | |
I would say you would lose more than 1/8th as the other 7 cylinders would have to work harder from the drag caused by the bad cylinder. |
Edward Gault (Irfgt)
Member
Username: Irfgt
Post Number: 944
Registered: 2-2001
| | Posted on Monday, April 01, 2002 - 4:12 pm: | |
If you have a valve that is so out of adjustment by normal running that it is holding the valve open, you have bigger problems than an adjustment will cure. If you loose one cylinder on an 8 cylinder engine I would say 1/8th of your power is lost. |
Ken Ross (Kdross)
New member
Username: Kdross
Post Number: 12
Registered: 2-2002
| | Posted on Monday, April 01, 2002 - 3:30 pm: | |
My 1985 308 QV appears to have a problematic exhaust vavlue that needs to be corrected. I am told that a simple vavle adjustment will correct the situation. This was the loss in power I was experiencing when I posted on the board last month. My question is how much of a power loss is the car experiencing with the current problem? Will there be a significant increase in power when I get the car back from the shop? TIA.
Ken |