Moparjack 489
Well-Known Member
Hi guys ,
What range you recommend that the total timing from 34-36 degree is full , about 3000-3500???
My problem is I had a big piniging problem with my engine , is it goes „ hot „ ( mostly starts permanent from 200 Fahrenheit water temp up )
After the pinging not goes away we changed as follow :
Engine was before 10,5:1
Now we change with bigger head gaskets to 10:1 but all
my cylinders still are about 200 psi in compresion test , there is a lot ?
I change my thermostat from 180 to 160 degree F. But the
engine after modification still pinging .
I change my MP distributor to a new firecore , because the old one are jumping etc.
I set the new firecore distributor to max 14 degree timing advance and put two blue springs inside and
the engine still piniging a lot ....
After I change it to two black springs it makes the pinging problem much better but still there, if the engine water temp goes nearly 200 degree F, and you drive a hill in D and accelerate ... it’s a Heavy 73 coronet Station Wagon .
Now we change The Valley pan to closed cross over and the pinging disappears
!
But now my timming curve are still very very long because the 2 black stiff springs . Initial timing is about 20 degree at 800 rpm’s and timing curve starts at about 1800-2000 but full in maybe at 5000 rpms I read about 28 degree at 3500 rpms .
Now I want try to change back to a black and one blue springs and see what’s happen....
Also a question :
If my total timming are to late full in like now , it can be also rich up in wot my a/F ratio !
Because I drive a 800 Edelbrock AVS
carburator and I lean it out the secondary jets already to the 0,95 but in WOT my air / fuel ratio show‘s me between 9,8 to 10,5 and the engine stops to accelerate if you kick in WOT between 3500 and 4000 rpms ....
any ideas guys ?
I think at first I must set my timming correct before I tune up the carburetor more , right ?
Best regards
Steffen
What range you recommend that the total timing from 34-36 degree is full , about 3000-3500???
My problem is I had a big piniging problem with my engine , is it goes „ hot „ ( mostly starts permanent from 200 Fahrenheit water temp up )
After the pinging not goes away we changed as follow :
Engine was before 10,5:1
Now we change with bigger head gaskets to 10:1 but all
my cylinders still are about 200 psi in compresion test , there is a lot ?
I change my thermostat from 180 to 160 degree F. But the
engine after modification still pinging .
I change my MP distributor to a new firecore , because the old one are jumping etc.
I set the new firecore distributor to max 14 degree timing advance and put two blue springs inside and
the engine still piniging a lot ....
After I change it to two black springs it makes the pinging problem much better but still there, if the engine water temp goes nearly 200 degree F, and you drive a hill in D and accelerate ... it’s a Heavy 73 coronet Station Wagon .
Now we change The Valley pan to closed cross over and the pinging disappears
!But now my timming curve are still very very long because the 2 black stiff springs . Initial timing is about 20 degree at 800 rpm’s and timing curve starts at about 1800-2000 but full in maybe at 5000 rpms I read about 28 degree at 3500 rpms .
Now I want try to change back to a black and one blue springs and see what’s happen....
Also a question :
If my total timming are to late full in like now , it can be also rich up in wot my a/F ratio !
Because I drive a 800 Edelbrock AVS
carburator and I lean it out the secondary jets already to the 0,95 but in WOT my air / fuel ratio show‘s me between 9,8 to 10,5 and the engine stops to accelerate if you kick in WOT between 3500 and 4000 rpms ....
any ideas guys ?
I think at first I must set my timming correct before I tune up the carburetor more , right ?
Best regards
Steffen
