Browsing this Thread:
1 Anonymous Users
|
|
Re: A15 dyno results [and new head gasket needed] |
|
|
Just popping in
Joined:
2005/12/9 14:46
From Cape Town, South Africa
Group:
Registered Users
|
The head came back, went back on, and life was produced. Joy and smiles aplenty.
In the process of trying to get it going smoothly we discoevered that cyls 3+4 were producing nothing in terms of power. Ctl 3 is not firing at all, and 4 is producing pops, but no power. Removing either/both plug leads for 3/4 does nothing to idle sound/speed.
New dizzy cap and rotor didn't solve anything. Swapping plugs and/or leads similar. Checked and adjusted vavle clearance (clearance probably larger than needed, rather than smaller)
Application of the compression tester produced:
1, 2, 3: 600kpa (or very close) == 85psi
4: 400kpa region == 56psi
Bearing in mind the engine was warm but certainly not 'normal running temp' (who wants to run up to temp on 2 cylinders?) I'm guessing I have problems down there. A good dose of oil in cyl 4 didn't achieve any noticable change.
I'm concerned that I may be jumping to the wrong conclusion though, since cyl 4 seems to be at least popping, but 3 nothing at all (not the other way round).
Thoughts?
Posted on: 2005/12/17 13:59
|
|
|
|
|
Re: A15 dyno results [and new head gasket needed] |
|
|
Just popping in
Joined:
2005/12/9 14:46
From Cape Town, South Africa
Group:
Registered Users
|
So I'm a fool...
"Can you confirm those readings are with the throttle wide open..."
Now it's showing 154psi for cyl3 and 147psi for cyl4.
Doh, back to the ignition or carbs I guess.
Posted on: 2005/12/17 14:52
|
|
|
|
|
Re: A15 dyno results [and new head gasket needed] |
|
Home away from home  
Joined:
2003/5/16 9:13
From durban, south africa
Group:
Registered Users
|
do you know if your valves are sealing 100%?
i had the same problem with my E-15t motor, turned out 1 or 2 of the valves were not sealing.
did the head get skimmed at all? did they do a vacuum test on the ports?
Posted on: 2005/12/22 6:15
|
_________________
VW chassis fibreglass body A-14 280 cam ported head shaved 1.5mm extractors with 2inch s/s pipe webber 38 dgas. to come........ Dellorto 36 drla turbo  and then maybe some gas 
|
You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
Transfer
