Chris,
The new drive shaft is Seal Power, same as the
one with a full 180 degree twist. The tips are hardened
and they didnt twist, but the full length between the "blued"
tips had a continious twist. Today I found a tiny piece
of what I believe to be a valve stem seal was the cause of the
oil pump locking up, resulting in the twisted shaft followed by
the loss of 3 teeth off the distributor gear and the shearing
of the piece inside the rotor. This happened exactly when
the backfire occured.
Tested the Tiger today and still have backfire through
the carb under fairly hard acceleration. Tonight I switched the
front accelerator cam to position 2. Also used both propane and
carb cleaner to search for intake manifold leaks. No indication
noted. Will get some starting fluid tomorrow and try again.
If no intake manifold leak, then fatter primaries in the carb
are in order.(with the manual choke partly closed I do not get
the backfire). May also diddle the timing some. I am at 10
degrees BTDC with no vacuume line attached.
At 09:39 AM 1/23/2001 -1000, you wrote:
>i hope you used the arp hardened drive shaft for your new oil pump. the same
>thing happend to my mustang and i found out that it ia a common occurence,
especially
>when the ford driveshaft is used with a high volume pump and tight bearing
clearances.
>that is why i am building the strokes 342 for the mustang.
>chris in mississippi.
>
>>Folks,
>> Friday morning I headed for work and decided to
>>see if I still had a slight backfire on acceleration. Well,
>>I should not have done that. KABAMMMM !! The motor died...
Jim Barrett
>
James Barrett Tiger II 351C and others
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