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| Timing question.... Again. https://www.ausmini.com/forums/viewtopic.php?f=2&t=91992 |
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| Author: | bluewhitecoopers1968 [ Tue Mar 01, 2016 4:18 pm ] |
| Post subject: | Timing question.... Again. |
Hey all, I have quite a big cam in my engine, 1340, Dellorto, 286i. The cam was put in when I was doing Hillclimb sprints etc but now I'm doing more runs and cruising. I intend to swap the cam out next time the engine needs attention but for the moment I'm just trying to make it more happy at lower revs. Question is, if I retard the timing a couple of degrees, will this give me a bit more torque at lower rpm? |
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| Author: | fordboat [ Tue Mar 01, 2016 4:25 pm ] |
| Post subject: | Re: Timing question.... Again. |
Advancing cam timing will improve your bottom end, retarding the cam will do the opposite. |
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| Author: | drmini in aust [ Tue Mar 01, 2016 4:32 pm ] |
| Post subject: | Re: Timing question.... Again. |
What he said above. You could also increase rocker clearance a bit, to reduce duration . I run .022 intake, .024 exhaust on my 282 cam with 1.5 rockers. No they are not noisy. |
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| Author: | bluewhitecoopers1968 [ Tue Mar 01, 2016 4:35 pm ] |
| Post subject: | Re: Timing question.... Again. |
So if I throw in some octane boost and advance a bit and increase Rocker clearance on inlet and exhaust a couple of thou? |
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| Author: | fordboat [ Tue Mar 01, 2016 5:11 pm ] |
| Post subject: | Re: Timing question.... Again. |
Don't bother with octane booster don't advance ignition timing. Cam timing and ignition timing are two separate things. Shim as doc suggests. |
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| Author: | fordboat [ Tue Mar 01, 2016 5:13 pm ] |
| Post subject: | Re: Timing question.... Again. |
Oops I mean clearance as doc suggests |
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| Author: | SuperCooper [ Tue Mar 01, 2016 10:09 pm ] |
| Post subject: | Re: Timing question.... Again. |
Richard. A stealth black box may help with adjusting timing and improving low torque. You can adjust more accuratley and monitor results. DrMini has some experience with this. I am looking at doing this. |
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| Author: | Morbo28 [ Wed Mar 02, 2016 7:24 am ] |
| Post subject: | Re: Timing question.... Again. |
Just before you do anything, make sure you have a clear idea of cam timing vs ignition timing as suggested (eg by ford boat). Still sounds like they're being talked about interchangeably. |
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