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#26 | |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,250
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Re: 30deg initial timing!?!?!!
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Regardless: The oil-pump-driving slot end below is bi-directional, true, but there is a small dimple machined into one side of the cam worm gear so you can tell one side from the other. Also it is wise to bump your rotor to point at Cylinder #1, then mark the rotors' relation to the block, both on the block itself and also on the distributor rotor plate before you pull it, so you can get back to the same marks on re-install.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 05-16-2015 at 03:37 PM. |
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#27 |
Registered User
Join Date: Feb 2013
Location: alvin, texas
Posts: 622
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Re: 30deg initial timing!?!?!!
I would think the engine would be hard to start with 30 degrees initial timing.
I know on the ones where I've ran a lot of initial timing they started a lot better if the ignition and starter were on separate switches so you could get the engine spinning then fire the ignition. that's what we did before you could get ignition boxes with a timing retard during starting feature
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1967 C10 lwb two tone, 305 & rat fink style floor shifted 700r4, 20" steelies 2004 2500HD utility bed aka Brutus |
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#28 |
Registered User
Join Date: Apr 2012
Location: Henderson Nevada
Posts: 804
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Re: 30deg initial timing!?!?!!
I think you have the wrong balancer installed. Have you ever checked the timing before since the engine was installed and was the timing on then? I say this because I installed the wrong balancer and at idle my timing mark showed at 12 position when I put the light on it.
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1972 cheverolet K5 CST Blazer 350/auto/AC/PS/PB/Aux Batt From Medford, Oregon |
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#29 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,936
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Re: 30deg initial timing!?!?!!
If you have a 350 out of a later model rig that had a long water pump (1973ish to 1985ish), the timing tab was pretty much directly behind the long water pump at the 12 o'clock position. So when you timed your rig you were actually shooting the timing light behind the water pump.
These old trucks with a short water pump had the timing tab offset to the drivers side. So if you have a later model balancer with an older timing tab (or vice versa) it can throw your timing waaaayyyy off. Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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Last edited by GASoline71; 05-16-2015 at 12:19 PM. |
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#30 |
Registered User
Join Date: Jun 2009
Location: Hampton Roads VA
Posts: 333
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Re: 30deg initial timing!?!?!!
I'm having a hard time finding a piston stop locally To check my TDC. I have decided to just set it to where it runs right and enjoy it.
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Brad 72 Blazer CST 350/350/205 ![]() ![]() |
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#31 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,594
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Re: 30deg initial timing!?!?!!
I'm still curious what your idle rpm is?
I've never bought a piston stop. I've just knocked the porcelain and electrode out of an old sparkplug, threaded it inside and used a piece of ready rod and a lock nut and made my own. Works great. |
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#32 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: 30deg initial timing!?!?!!
You really don't even need to be that "exact". You'll need a helper for this. Just slowly turn it over by hand until you feel the pressure build in cyl No. 1 with your finger over the plug hole. You'll feel a slight pop. That should get you within a few degrees of TDC to see if the balancer/timing tabs are wrong... I mean, 30* is A LOT. You should be able to spot what's off. Like others have mentioned, I suspect a balancer/timing tab mismatch issue. My guess is that you're using a 2 O'clock timing tab with a "newer" 12 O'clock style balancer.
Even easier... try this... Try to shoot your timing light straight down from the top of the motor, either in front of, or behind the water pump, I'd be willing to bet your initial is 8-12* when trying it that way.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#33 |
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Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: 30deg initial timing!?!?!!
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#34 |
Registered User
Join Date: Jun 2009
Location: Hampton Roads VA
Posts: 333
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Re: 30deg initial timing!?!?!!
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Brad 72 Blazer CST 350/350/205 ![]() ![]() |
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#35 |
Registered User
Join Date: Jun 2009
Location: Hampton Roads VA
Posts: 333
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Re: 30deg initial timing!?!?!!
Got playing with her today and found TDC using the redneck rope method
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Brad 72 Blazer CST 350/350/205 ![]() ![]() |
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#36 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,594
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Re: 30deg initial timing!?!?!!
Now you get or make a real piston stop.
Those redneck calibrated ropes, screwdrivers, fingers or pencils are notorious for being off 10 to 15 degrees. And turn your idle down to 650. At 800 you're starting to advance the weights in the dizzy. |
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#37 |
Registered User
Join Date: Jun 2009
Location: Hampton Roads VA
Posts: 333
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Re: 30deg initial timing!?!?!!
the rope was good enough for me to know my mark was not off my 30 deg.
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Brad 72 Blazer CST 350/350/205 ![]() ![]() |
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#38 |
Registered User
Join Date: Jun 2009
Location: Hampton Roads VA
Posts: 333
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Re: 30deg initial timing!?!?!!
So any ideas on whats going on??
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Brad 72 Blazer CST 350/350/205 ![]() ![]() |
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#39 |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: 30deg initial timing!?!?!!
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#40 |
Registered User
Join Date: Feb 2013
Location: Fort Collins, CO
Posts: 26
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Re: 30deg initial timing!?!?!!
Hook a vacuum gauge up to the manifold port on the carb and check the timing unless you have a huge cam. You adjust the timing to where it makes the most vacuum and it should be set correctly or very close.
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