How To Set Timing Without Timing Marks
Jul 5th, 2008 Posts: 242 I was but installing new plug wires to the new benefactor on my 4.3 engine swap when I realized that there is no degreed timing scale anywhere. The engine came with electronic ignition that used a crankshaft position sensor to control accelerate. I've change over to Carb with vaccuum advance distributor, but now I don't have a marked calibration to gear up the advance. The new distributor: The damper has the TDC mark, but at that place is no calibration on the timing cover or cake. ------------------ IP: Logged PFF Organization Bot Posts: 2840 Plow the crank over until the No.one piston is at full stoke. (take the spark-plug out to encounter and brand sure the piston is at the top) One time that is done, driblet the distributor in the hole and first the engine. If you can't get it running, turn the engine crank some other 180 degrees and position the no.1 piston at full stoke. Again, drop the distributor down in the hole and start the engine. I now should exist able to idle on it's own, but and so yous have to rotate the benefactor to adjust the timing. Make sure the distributor is pointing at the No.1 postal service firing position. Once you have the engine running you lot can pigment a white marker on the harmonic balancer. Just make sure you have the engine at TDC before painting the mark. ------------------ 88 GT, loaded, 5-speed IP: Logged Posts: 2840 BTW, I was just mentioning how to become the engine running. I would be a skillful idea to get a timing marker tab for your engine for easier / visual timing process. You could get that at a junk thou if desired. ------------------ 88 GT, loaded, 5-speed IP: Logged Jul 6th, 2008 Posts: 4555 Set the timming enough to become it running (if you lot haven't already). Keep advancing the timming until it kicks back when starting, and so of grade retard it untill information technology quits. Drive it & make sure it dosen't ping nether load; if so retard it a lilliputian more untill it quits. IP: Logged Posts: 11689 All you really demand is a marked location for TDC. Many timing lights take a built a degree dial where you turn information technology until the TDC mark is lined up and and so read the dial for how many degrees of adjustment it took to go there. Autozone and other parts stores as well sell bolt on timing tabs if you lot want the degree marks. I am pretty certain you lot have the plastic timing cover, and many people have installed it on older engines, so you lot should exist able to install an older metal timing encompass with the tack welded timing tabs on it. The plastic cover uses far less bolts than the Metal one, but I believe the common holes between them are in the same location and could exist installed without effect. During the engine mockup stages, I e'er remove the timing encompass and detect TDC based on the marks on the timing chain. So slide the cover back on and make my confirmed TDC marking on the balancer and timing tab on the cover. IP: Logged Posts: 11159 I am also sure at that place is a part # for what you need, but, that said, to time a carb'd engine it is not much of a mystery. Figure out the #ane position for the distributor. #1 wire goes from that one to #1 cylinder. Rotate the assembly to TDC. You can cheque that 2 means. Look at your rocker arms to determine both valves are closed, or stick a spiral driver down the spark plug hole, or put some air into the spark plug hole to brand certain the valves are airtight. You lot now take a "basic" timing position and you tin can start the engine. Cull a vacuum port on the intake manifold. At that place should exist one at that place or on the carb body. Use a Large confront vacuum guage and with the engine idling, motility the benefactor until you go the highest vacuum. Something forth the line of 15 to 17 lbs/ft. You now have practiced timing. Try driving it. If you get ping it is too far advanced. Set up your carb idle excursion and do it all over again. Practiced luck Arn [This message has been edited by Arns85GT (edited 07-06-2008).] IP: Logged Posts: 14730 All-time way to locate the timing mark on an engine. ------------------ IP: Logged Jul 7th, 2008 Posts: 242 Thanks for the suggestions guys! I already had the engine set at TDC from when I pulled the original calculator controlled distributor, so when I installed the new vaccuum distributor, information technology is already inside a few degrees of existence correct. I simply need that degree scale to become it perfect. ------------------ IP: Logged Posts: 49601 Set the timming plenty to get it running (if you haven't already). Keep advancing the timming until it kicks back when starting, then of form retard it untill information technology quits. Drive information technology & make sure it dosen't ping nether load; if and so retard it a little more untill information technology quits. This is how I always have done it. Every engine runs slightly different and official specs are only an boilerplate. This method works no matter what kind of mods you brand and is far more accurate for your specific engine. I had a automobile one time that ran far ameliorate with timing over 6* off what spec was. IP: Logged Posts: 10079 Excellent data from all of you. IP: Logged Contact United states of america | Dorsum To Master Folio Advertizing on PFF | Fiero Parts Vendors
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How do you fourth dimension an engine without timing marks? by Egor
Started on : 07-05-2008 11:00 PM Replies : 9 Final mail by : heybjorn on 07-07-2008 12:06 PM Egor
Member
From: DALLAS surface area
Registered: Sep 2003
I put a different distributor, wires, and scroll on my boat with a four.3 yesterday and it just took about 10 minutes to become the engine running and timed, merely it had a timing scale to become by.
I need some aid!
Thanks, Egor.
____________________________________________
"Of all the things I have lost during my lifetime, I miss
my listen the most." fierogt28
Member
From: New-Brunswick, Canada.
Registered: Feb 2005
fierogt28 fierogt28
Fellow member
From: New-Brunswick, Canada.
Registered: February 2005
fierogt28 Tha Commuter
Member
From: S.E. USA
Registered: Sep 2006
HTH,
Paul fieroguru
Fellow member 
From: Champaign, IL
Registered: Aug 2003
Arns85GT
Fellow member 
From: London, Ontario, Canada
Registered: Jul 2003
Dennis LaGrua
Member
From: Hillsborough, NJ U.S.A.
Registered: May 2000
Crank the engine with your finger covering the #1 cylinder spark plug hole. When you start to fell pressure level and yous start to hear it leaking from effectually your finger you are on the compression cycle. Insert a dail indicator so information technology hit the top of the piston. Carank engine by mitt using a wrench on the bolt on the balancer and picket the dial indicator When the dial indicator no longer keeps increasing in reading and just starts to go the other way by a few thousnads, you lot are at TDC. Mark the reading on the dial indicator and put a chalk line on the balancer. Now cycle the engine ii roattions and finsih by hand to get to the TDC (highest reading) position. At present mark the balancer at the point where information technology aligns with the TDC arrow. I put a dimple in it with a hammer and punch and too use white out to paint a line. You've found the TDC position. But accurate way to practice it.
87GT - 3800SC Series III engine, iii.iv" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE " Egor
Member
From: DALLAS area
Registered: Sep 2003
Arns85GT suggestion to utilize a vaccuum gauge to set the timing would probably exist good except that this carb was never used on this 4.3 engine. The final two applications were on a 360 Contrivance V8 and a 460 Ford big block. It is not jetted for the iv.three yet.
Fieroguru's idea to change out the timing comprehend from the plastic 1 to the older metal cover, unfortunitly, is the way I'll probably have to go to become the timing scale on this engine. It'southward just a real p'er because I am ready to slip the cradle back in the car and do some driving except for this pocket-sized setback.
I've had more than trouble with these kinds of little things on this swap than on the big things. Plus, I but don't become the time to work on it.
Ane of these days!
Egor
____________________________________________
"Of all the things I have lost during my lifetime, I miss
my mind the most." rogergarrison
Member 
From: A Western Caribbean Island/ Columbus, Ohio
Registered: April 99
Originally posted by Tha Driver:
HTH,
Paul heybjorn
Member 
From: pace fl
Registered: Apr 2007
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