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Timing........ https://ausmini.com/forums/viewtopic.php?f=5&t=7199 |
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Author: | sg [ Sun May 15, 2005 1:32 pm ] |
Post subject: | Timing........ |
Fellow members, is there a rule of thumb as to what setting the timing should be at on Slidey's 1310??????? or any model for that matter?. I may be incorrect but i thought at one stage i was told that anywhere between 10-15 degrees advanced ![]() Reason for the Q is that i was told that Slidey's timing was 2 degree's retarded........... opinions anyone? |
Author: | 9YaTaH [ Sun May 15, 2005 2:04 pm ] |
Post subject: | Re: Timing........ |
sg wrote: Fellow members, is there a rule of thumb as to what setting the timing should be at on Slidey's 1310??????? or any model for that matter?. I may be incorrect but i thought at one stage i was told that anywhere between 10-15 degrees advanced
![]() Reason for the Q is that i was told that Slidey's timing was 2 degree's retarded........... opinions anyone? all depends on the type of cam fitted....if standard, do it by the book...if the profile has changed then zero it in via the instructions provided by the cam manufacturer.... now, standard or pulsar dissy..... ![]() ![]() ![]() search on timing or camshaft for extra discussion |
Author: | sg [ Sun May 15, 2005 2:24 pm ] |
Post subject: | |
Standard dizzy 9Y........... will do search now... |
Author: | drmini in aust [ Sun May 15, 2005 3:52 pm ] |
Post subject: | |
I don't bother with static timing figures any more. Fuels have changed, cams are not stock, many heads have different chamber shapes, and most dizzys have 30 years of wear. I advance them until they either ping, or feel a little rough- then retard until they are running sweet. Could be anything from 30-35* total advance. If it kicks back during starting, I retard a little more. ![]() When you get it right, put a mark on the crank pulley and another on the timing cover (or a bit of sheet metal). These marks set to line up using strobe timing light, with motor running at 4500rpm (ie full advance on all except an S dizzy) ![]() |
Author: | 9YaTaH [ Sun May 15, 2005 5:42 pm ] |
Post subject: | Too true.. |
drmini in aust wrote: I don't bother with static timing figures any more. Fuels have changed, cams are not stock, many heads have different chamber shapes, and most dizzys have 30 years of wear.
I advance them until they either ping, or feel a little rough- then retard until they are running sweet. Could be anything from 30-35* total advance. If it kicks back during starting, I retard a little more. ![]() When you get it right, put a mark on the crank pulley and another on the timing cover (or a bit of sheet metal). These marks set to line up using strobe timing light, with motor running at 4500rpm (ie full advance on all except an S dizzy) ![]() Doc...I have heard and seen this work quite a few times now....just turn the dissy till the revs die, back a tad, check it aint pinging...make a mark. Set and forget....unbelievable ![]() |
Author: | sg [ Sun May 15, 2005 5:47 pm ] |
Post subject: | |
drmini in aust wrote: I don't bother with static timing figures any more. Fuels have changed, cams are not stock, many heads have different chamber shapes, and most dizzys have 30 years of wear.
I advance them until they either ping, or feel a little rough- then retard until they are running sweet. Could be anything from 30-35* total advance. If it kicks back during starting, I retard a little more. ![]() When you get it right, put a mark on the crank pulley and another on the timing cover (or a bit of sheet metal). These marks set to line up using strobe timing light, with motor running at 4500rpm (ie full advance on all except an S dizzy) ![]() Very interesting Doc.... will try that one... |
Author: | drmini in aust [ Sun May 15, 2005 6:40 pm ] |
Post subject: | Re: Too true.. |
9YaTaH wrote: drmini in aust wrote: I don't bother with static timing figures any more. Fuels have changed, cams are not stock, many heads have different chamber shapes, and most dizzys have 30 years of wear. I advance them until they either ping, or feel a little rough- then retard until they are running sweet. Could be anything from 30-35* total advance. If it kicks back during starting, I retard a little more. ![]() When you get it right, put a mark on the crank pulley and another on the timing cover (or a bit of sheet metal). These marks set to line up using strobe timing light, with motor running at 4500rpm (ie full advance on all except an S dizzy) ![]() Doc...I have heard and seen this work quite a few times now....just turn the dissy till the revs die, back a tad, check it aint pinging...make a mark. Set and forget....unbelievable ![]() It's called `power timing'. Very easy to do with V8s in inboard boats, you can reach back, & turn the dizzy while you're driving.. ![]() Getting back to Minis.. Whatever dizzy advance you have, you need to run the motor fast enough for this so it's finished the centrifugal advance. Alfas 4 cyls use 5,200 rpm.. ![]() ![]() Cooper S used to advance all the way to 7,000. ![]() |
Author: | gafmo [ Sun May 15, 2005 6:45 pm ] |
Post subject: | |
Its an Art...And I Think I'm getting thier...But as you have said it fine tunning specialy with the fuel we use now adays...I know when Morris has the crap fuel in it now...he liks to ping...but when it the good stuff He's spot on ![]() |
Author: | Mick [ Sun May 15, 2005 7:16 pm ] |
Post subject: | |
So if the cooper dizzys advance all the way up to 7000 rpm, what is the best way people use to set them? I've been using the book so far, but I am interested to see if I can squeeze a little more from the girl.. |
Author: | drmini in aust [ Sun May 15, 2005 7:26 pm ] |
Post subject: | |
Mick wrote: So if the cooper dizzys advance all the way up to 7000 rpm, what is the best way people use to set them?
I've been using the book so far, but I am interested to see if I can squeeze a little more from the girl.. Most owners I know (of stock ones) still set them static. But as I said, the stock advance curve in them is now probably not the best for the fuel in use. I'd advance it as I said above, then see what that comes back to with a strobe light at idle. Don't be surprised if it's a long way from the factory spec.... ![]() |
Author: | gafmo [ Sun May 15, 2005 7:28 pm ] |
Post subject: | |
AS per Dr realy...It the way I have been showen If she kink back after re build...Advance it Clock wise...If she Pings retrat it...Just make sure you have the best fuel you have I have no idea at this atge how to use a timming light ![]() |
Author: | sg [ Sun May 15, 2005 7:44 pm ] |
Post subject: | |
Guys....... great thread, great replies.... keep it coming i'm learning a lot out of this ![]() |
Author: | Chris [ Sun May 15, 2005 8:32 pm ] |
Post subject: | |
Any lucas dissy that has not been rebuilt 5 minutes ago will have a questionable timing curve unless it has some mods done to it. Even new the base plates were all over the place and point bounce could also be a problem. The machines to set up the curve are I guess pretty hard to find these days so it is hard to find out exactly how a lucas dissy is performing. Get a Pulsar. I haven't looked but I wonder if it would be possible to fit the pulsar guts in a lucas housing????.says he thinking.. |
Author: | Stuartminidlx [ Sun May 15, 2005 10:04 pm ] |
Post subject: | |
once i have my 45 dcoe and i find a pulsar dizzy to convert i will be getting a full dyno tune (at a discount price) to get mine perfect. |
Author: | drmini in aust [ Sun May 15, 2005 10:25 pm ] |
Post subject: | |
2 out of 3 of our Minis have Pulsars in 'em now. 1360 A series & now the 1293 A+. When I trip over another dizzy I'll grab it for the 1132 Clubbie. ![]() Lucas these days are good only for donor drive dogs.. ![]() |
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