Wind it back if they didn't, or you'll break something- max advance (vac disconnected) should be around 30* when centrifugal advance is all in.
This applies with a Nissan OR a Lucas.
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| dyno results https://www.ausmini.com/forums/viewtopic.php?f=2&t=29180 |
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| Author: | mattsmini1971 [ Tue Mar 13, 2007 6:12 pm ] |
| Post subject: | dyno results |
hey guys had the mini on the dyno today and was'nt very happy with the results. 39bhp and 91nm of torque at 3000rpm. all this was with a nissan dizzy and the advance was 55degrees advance at 3000rpm which isnt very good is it. |
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| Author: | slinkey inc [ Tue Mar 13, 2007 6:14 pm ] |
| Post subject: | |
Dude, set up way wrong! |
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| Author: | drmini in aust [ Tue Mar 13, 2007 6:16 pm ] |
| Post subject: | |
Wind it back if they didn't, or you'll break something- max advance (vac disconnected) should be around 30* when centrifugal advance is all in. This applies with a Nissan OR a Lucas.
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| Author: | slinkey inc [ Tue Mar 13, 2007 6:18 pm ] |
| Post subject: | |
Just re-read your post....at 3000rpm!?!? Max advance should be about 30 degree BTDC, some books give different figures but this one isn't bad for a naturally aspirated motor running good fuel. I don't think this has anything to do with the Nissan Dizzy, you can over advance any dizzy. And if that's 55 degrees BTDC at max, that sounds like way too much! I'm running 20ish (D4R85 dizzy at 5 degrees at around 700rpm) max advance on my car as a safe figure until I go the dyno next week. But my car is boosted (low boost) so it's a bit different for igntion timing. <edit> Doc, you typed in jsut before me. 
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| Author: | mattsmini1971 [ Tue Mar 13, 2007 6:19 pm ] |
| Post subject: | yep |
im gioing to send it to grapham russel and get a regraph done. |
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| Author: | mattsmini1971 [ Tue Mar 13, 2007 6:20 pm ] |
| Post subject: | at idle |
at idle its around 25 degrees |
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| Author: | slinkey inc [ Tue Mar 13, 2007 6:21 pm ] |
| Post subject: | |
I'd say no more than 10 degrees, you will blow ur motor up sadly. |
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| Author: | drmini in aust [ Tue Mar 13, 2007 6:21 pm ] |
| Post subject: | |
Regraph good but the 30* max advised still applies. All the regraph does is pull up the bottom end torque, over 3500 there is no difference. Yes I have 2 running--- 
is that with the vacuum line on? Always set timing with it off.
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| Author: | mattsmini1971 [ Tue Mar 13, 2007 6:23 pm ] |
| Post subject: | oo |
i thought i had to get the weights and or springs changed? |
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| Author: | drmini in aust [ Tue Mar 13, 2007 6:26 pm ] |
| Post subject: | Re: oo |
mattsmini1971 wrote: i thought i had to get the weights and or springs changed?
The weights are the same, he modifies the advance plate to limit advance, and plays with the spring tension. he says...
I did my own 2, I just mod the plate.
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| Author: | mattsmini1971 [ Wed Mar 14, 2007 6:55 pm ] |
| Post subject: | dizzy |
hi all got the timing set properly thanks to dr mini. starts easier now and is way smoother throw the rev range. im sending the dizzy away to get modified to suit the mini and will be back to the dyno. thanks again dr mini. |
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| Author: | Spaceboy [ Wed Mar 14, 2007 8:53 pm ] |
| Post subject: | |
crappy nissan dizzys belong on crappy nissans |
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| Author: | slinkey inc [ Wed Mar 14, 2007 8:56 pm ] |
| Post subject: | |
Crappy BMC dizzy's to stay on crappy BMC engines. |
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| Author: | mattsmini1971 [ Wed Mar 14, 2007 8:57 pm ] |
| Post subject: | mmmm |
i was told id start a fight. |
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| Author: | slinkey inc [ Wed Mar 14, 2007 9:13 pm ] |
| Post subject: | |
Yeah it's all been done before. I once got to argueing with a bloke on here telling me the Nissan dizzy would blow my car up. Yet his info was all heresay. He'd never used a Nissan dizzy. A warn out dizzy on any discription is crap and bad. Either Nissan or BMC. Hope your dyno issues work out for the best. |
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