"grumpy, Ive been checking things during my engine assembly, Ive got a problem, my distributor doesn,t have an adjustable sliding collar to make the clamp height adjustable and when I seat the distributor its resting firmly on the oil pump drive shaft and still not seated on the intake, so clamping it puts a significant load on the oil pump...now what?"
WATCH VIDEO
read the linked info
https://www.onedirt.com/tech/engine...fusion-out-of-distributor-gear-compatibility/
As Im sure you know the lower distributor body forms one wall on an internal oil passage and the gear on the cam drives the distributor and the internal blade inside the distributor gear is semi interlocked with the oil pump drive shaft.,
Im sure you know the oil pump drive will only slide inside the distributor gear in two locations where the two ears on the oil pump drive line up with the blade inside the distributor gear.
obviously you can pre align the slot to accept the slot inside the distributor gear in the base of the distributor to allow the distributor get the rotor to face any direction when seated
remember the oil pump drive only seats in two locations 180 degrees apart but it can be lined up anyplace you want with a 18" long large flat blade screw driver prior to installing the distributor from the top of the engine rather easily before you re-seat the distributor, but as the distributor gear teeth mesh the distributor will turn the rotor about 15 degrees
you should be trying to get about a .020-.050 clearance between the fully seated distributor and the oil pump drive shaft,
If you find its the length of the oil pump drive shaft thats preventing the distributor from fully seating, those oil pump drive shafts are available in several lengths and you might need to grind or machine off a bit of length to get the ideal fit/clearance.
http://www.hawaiiracing.com/?page=shop/ ... 66efce1a0d
your current distributor can usually be easily modified by a local machine shop with a lathe for an adjustable slip collar by carefully machining off the current one and adding a slip collar, if you need to make distributor gear to cam gear engagement or oil pump drive shaft length changes
the tall deck block requires a longer reach distributor shaft thats about 0.28 longer thus the need for the adjustable collar on the distributor adding the extra reach to get the oil pump drive and drive gears to properly align and mesh.
if your building a TALL DECK BLOCK, some intakes for a standard deck height can be used WITH intake spacers,
but in many cases the stock distributor must be modified by machining off the existing locating collar and installing an adjustable sliding height locating ring
http://www.summitracing.com/parts/drt-62220001
THERE ARE slide collars available in the aftermarket for less than $20 and almost any chevy distributor body can be machined to remove the original collar and install a sliding collar. almost any good machine shop with a lathe can do the required mods.
STEP #1 is ALWAYS verify TDC and your timing tab and damper reflect REALITY, and if you failed to get the cam degreed in it could be indexed incorrectly causing major problems
a few minutes reading links and sub links will help here!
viewtopic.php?f=52&t=90
viewtopic.php?f=70&t=2798
viewtopic.php?f=52&t=4532&p=12060&hilit=bushings+timing#p12060
viewtopic.php?f=70&t=967
viewtopic.php?f=70&t=1015
viewtopic.php?f=70&t=4683
viewtopic.php?f=70&t=875
viewtopic.php?f=70&t=9921&p=38008#p38008
http://garage.grumpysperformance.co...ibutors-wont-seat-on-intake.12538/#post-63674
READ THE RELATED THREADS
viewtopic.php?f=48&t=873&p=1367&hilit=clamp+distrib#p1367
viewtopic.php?f=54&t=6479&p=20555&hilit=pump+drive+shaft#p20555
viewtopic.php?f=54&t=123&p=19025&hilit=pump+drive+shaft#p19025
viewtopic.php?f=32&t=36&p=44&hilit=pump+drive+shaft#p44
WATCH VIDEO
read the linked info
https://www.onedirt.com/tech/engine...fusion-out-of-distributor-gear-compatibility/
As Im sure you know the lower distributor body forms one wall on an internal oil passage and the gear on the cam drives the distributor and the internal blade inside the distributor gear is semi interlocked with the oil pump drive shaft.,
Im sure you know the oil pump drive will only slide inside the distributor gear in two locations where the two ears on the oil pump drive line up with the blade inside the distributor gear.
obviously you can pre align the slot to accept the slot inside the distributor gear in the base of the distributor to allow the distributor get the rotor to face any direction when seated
remember the oil pump drive only seats in two locations 180 degrees apart but it can be lined up anyplace you want with a 18" long large flat blade screw driver prior to installing the distributor from the top of the engine rather easily before you re-seat the distributor, but as the distributor gear teeth mesh the distributor will turn the rotor about 15 degrees
you should be trying to get about a .020-.050 clearance between the fully seated distributor and the oil pump drive shaft,
If you find its the length of the oil pump drive shaft thats preventing the distributor from fully seating, those oil pump drive shafts are available in several lengths and you might need to grind or machine off a bit of length to get the ideal fit/clearance.
http://www.hawaiiracing.com/?page=shop/ ... 66efce1a0d
your current distributor can usually be easily modified by a local machine shop with a lathe for an adjustable slip collar by carefully machining off the current one and adding a slip collar, if you need to make distributor gear to cam gear engagement or oil pump drive shaft length changes
the tall deck block requires a longer reach distributor shaft thats about 0.28 longer thus the need for the adjustable collar on the distributor adding the extra reach to get the oil pump drive and drive gears to properly align and mesh.
if your building a TALL DECK BLOCK, some intakes for a standard deck height can be used WITH intake spacers,
but in many cases the stock distributor must be modified by machining off the existing locating collar and installing an adjustable sliding height locating ring
http://www.summitracing.com/parts/drt-62220001
THERE ARE slide collars available in the aftermarket for less than $20 and almost any chevy distributor body can be machined to remove the original collar and install a sliding collar. almost any good machine shop with a lathe can do the required mods.
STEP #1 is ALWAYS verify TDC and your timing tab and damper reflect REALITY, and if you failed to get the cam degreed in it could be indexed incorrectly causing major problems
a few minutes reading links and sub links will help here!
viewtopic.php?f=52&t=90
viewtopic.php?f=70&t=2798
viewtopic.php?f=52&t=4532&p=12060&hilit=bushings+timing#p12060
viewtopic.php?f=70&t=967
viewtopic.php?f=70&t=1015
viewtopic.php?f=70&t=4683
viewtopic.php?f=70&t=875
viewtopic.php?f=70&t=9921&p=38008#p38008
http://garage.grumpysperformance.co...ibutors-wont-seat-on-intake.12538/#post-63674
READ THE RELATED THREADS
viewtopic.php?f=48&t=873&p=1367&hilit=clamp+distrib#p1367
viewtopic.php?f=54&t=6479&p=20555&hilit=pump+drive+shaft#p20555
viewtopic.php?f=54&t=123&p=19025&hilit=pump+drive+shaft#p19025
viewtopic.php?f=32&t=36&p=44&hilit=pump+drive+shaft#p44
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