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| how much initial timing https://slantsix.org/forum/viewtopic.php?t=40039 |
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| Author: | thedeputy [ Fri Apr 30, 2010 11:18 am ] |
| Post subject: | how much initial timing |
I've put a "new" 225 in my 68 valiant. It's a stock 225 from 1975 (I think) it has the peanut style head, so without spark plug tubes. I've also converted it to a two barrel super six intake/exhaust manifold, and made an upgrade to electronic ignition, with a five prong ecu. What is the best initial timing I should give it at first start up, so I know it will run good? Thanks, Antoon |
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| Author: | Reed [ Fri Apr 30, 2010 1:33 pm ] |
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Oy. What cam are you running? How many degrees advance does the distributor mechanical advance governor allow? How many degrees advance does the vacuum advance pod on the distributor allow? What is your compression ratio? Has the timing mark on the vibration dampener been verified to read true TDC? Has the timing chain stretched? If you don't know the answers to these questions, I would say ballpark it and run 8-12 BTDC. If it pings, back it off two degrees. |
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| Author: | thedeputy [ Fri Apr 30, 2010 11:38 pm ] |
| Post subject: | |
THe awnser to all your questions. I have no idea. All I know the 225 is in stock, non-overhauled form, from a 75 van. The ignition is a stock chrsler one, including an original used five pin ecu. I've now put it at approximately 12 degrees, which is where the distributor has been all its life, because of the bolt mark on the distributor hold down area. Antoon |
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| Author: | 65 dartman [ Sat May 01, 2010 3:53 am ] |
| Post subject: | |
As I understand it, the only mods you made was adding the Super Six and changing the electronic box to a 5 pin one. If it was a running driving vehicle that the motor came from and you have not disturbed the timing by moving the distributor, I would say just go ahead and fire it up. Don't know if you recall my oldest son lives near Amsterdam. He is currently on temporary duty by his company at Palma di Mallorca and will return to Amsterdam on 5/5. He said he will be glad to get home! |
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| Author: | thedeputy [ Sat May 01, 2010 9:52 am ] |
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That's when that vulcano in iceland doesn't mess things up again,  lol.About the distributor, that did not came from this engine, I found that at a swap meet a long time ago. The ecu could belong with that distributor, but I can't remember. I think I'll just leave it at 12 for now. It will pobably fire up, but it might not run very strong, but I'll do some finetuning later. Any ideas on how to prime the carb with gas before the first start-up? Antoon |
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| Author: | 65 dartman [ Sat May 01, 2010 12:20 pm ] |
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Quote: That's when that vulcano in iceland doesn't mess things up again,
That volcano made a fine mess of travel in general. My son said trains were booked solid and rental cars were non e to be found. lol. Quote: About the distributor, that did not came from this engine, I found that at a swap meet a long time ago. The ecu could belong with that distributor, but I can't remember. I think I'll just leave it at 12 for now. It will pobably fire up, but it might not run very strong, but I'll do some finetuning later.
There may be a better way; I would probably pull the plug wire from the coil to the distributor and crank a little bit, checking to see if gas shoots from the carb when the throttle lever is moved. When gas is seen, reattach the coil wire and start it up - watch for any leaks!
Any ideas on how to prime the carb with gas before the first start-up? Antoon |
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| Author: | thedeputy [ Sun May 02, 2010 12:21 am ] |
| Post subject: | |
That's possible, but I want to avoid long cranking because the engine has been standing still for a couple of years, so I think I'll just fill up the bowl vent, and give it a squirt of brake cleaner down the barrels. That way it should fire up quickly and give a good oil pressure. Antoon |
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| Author: | radarsonwheels [ Sun May 02, 2010 8:43 am ] |
| Post subject: | Gas in carb |
Sometimes when I run out of gas in my swinger (no gauge happens a few times a year,I always carry a spare gascan) I just pour a tablespoon down the carb. This is usually enough to run for a few seconds and partially fill the float bowl. A little more cranking usually gets going with maybe one more stall out before all is good. If you are firing for the first time you can make a gravity feed like an IV to fill the carb then hook the rubber line back up to the fuel tank line. Or just set a motorcycle tank on a blanket on the roof with enough fuel for a complete break in cycle. When I broke in my last build ( smallblock stroker) I had the gas line stuck into a red gas can just drinking away like a juice box for a school kid. Astonishing how much gas that sucker drank at 2krpm for 15 minutes! The spoonful is the easiest. I say spoonful but really I just carefully pour a small splash down the carbs throat. Good luck |
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| Author: | thedeputy [ Sun May 02, 2010 10:46 am ] |
| Post subject: | |
Ok, Thanks for the tips, very helpful!! Antoon |
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