Created by: | Orig. Posting Date | User Name | Edit Date |
| Aug 27, 2018 07:45AM | Alex | |
| Aug 15, 2018 07:21PM | Minimike1 | |
| Aug 15, 2018 11:24AM | Jemal | |
| Aug 15, 2018 09:39AM | Minimike1 |
Posted:
Aug 27, 2018
07:45AM
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Total posts: 10237
Last post: Apr 9, 2024 Member since:Mar 24, 1999
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The 731 cam needs timing in with full lift at 110° ATDC.
Ignition timing will depend on the state of the entire engine and should be dialled in on the rollers.
Ignition timing will depend on the state of the entire engine and should be dialled in on the rollers.
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Total posts: 6909
Last post: Apr 13, 2024 Member since:Feb 26, 1999
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Thanks Jemal. Not sure where I had the brain fart but --- Doh, of course.
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Last post: Sep 15, 2023 Member since:Nov 3, 2011
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Hi Minimike
Cam timing is not the same thing as ignition timing... cam timing is "set" (or mostly verified) when building the engine. It refers to the specific timing between the cam and crank... exactly when the valves open and close.
Ignition timing may change for different cams, compression ratios, fuel quality, etc. Certainly it should run at 8 BTDC, then optimize from there.
Cam timing is not the same thing as ignition timing... cam timing is "set" (or mostly verified) when building the engine. It refers to the specific timing between the cam and crank... exactly when the valves open and close.
Ignition timing may change for different cams, compression ratios, fuel quality, etc. Certainly it should run at 8 BTDC, then optimize from there.
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Total posts: 6909
Last post: Apr 13, 2024 Member since:Feb 26, 1999
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Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
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Does a 731 cam install require different timing in a 1300 than a stock cam? I've got it at 8 BTDC. Wondering if I've missed something.
