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willy
 Post subject: Vacuum Advance
PostPosted: Wed Jul 07, 2004 5:04 pm 
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1360cc
1360cc

Joined: Mon May 03, 2004 6:46 pm
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Location: ADL
The vacuum advance on my distributor is punctured. This is letting in air for the dizzy?? or so i am told.
something like that.
Is it worth spending 60 bux for a new one? While its on the dyno, this is what he found and he said to get back to him as he can do more tuning once its fitted.

Let me know.
WIll.
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thommo09
 Post subject:
PostPosted: Wed Jul 07, 2004 6:13 pm 
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998cc
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Joined: Tue Mar 16, 2004 3:07 pm
Posts: 1053
Location: Adelaide, SA
well if theres not as much vacuum occuring then you probably wont be getting as much advance......you might get more power at higher revs if you get it fixed dude
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drmini in aust
 Post subject:
PostPosted: Wed Jul 07, 2004 7:11 pm 
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The vac advance thingy only works at part throttle. It's an economy device, nothing more.

At the risk of getting flamed, I will state: "real performance engines don't need vac advance to get power".
examples:
Morris Cooper S
99% of real race Minis
Fiat twin cams
Alfa twin cams

etc etc.

I have now donned my asbestos suit, so flame away! :lol:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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gafmo
 Post subject:
PostPosted: Wed Jul 07, 2004 7:18 pm 
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the King of Bling
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Correct again My Alfa 75 2.0 Twinspark. Two Dizzies Two Coils and ten Leads the Dizzies do not have Vac Dizzies.
Also less pipes in the engine bay

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thommo09
 Post subject:
PostPosted: Wed Jul 07, 2004 7:34 pm 
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998cc
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Location: Adelaide, SA
well there you go! i always thought it was used to advance the timing at higher revs and lotsa throttle.....once again i am learning from the master
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998_Clubman
 Post subject:
PostPosted: Wed Jul 07, 2004 7:39 pm 
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848cc
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Joined: Tue Mar 16, 2004 5:55 pm
Posts: 391
Location: Redcliffe, Brisbane
ive got a vacume dizzy, came off my 998 clubby , its like brand new, only done about 5,000 kms.. i paid $240 for it, ill sell it to you for $100

its perfect, still looks like new :wink:

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willy
 Post subject:
PostPosted: Wed Jul 07, 2004 8:10 pm 
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Location: ADL
Well its back from the dyno. He replaced the vac advance on it with a reconditioned one... 60 bux.
Runs so much better... made the world of differece.

Will post up the "bragging rights" when i go back there to pick up the printout. Left it behind :x
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min13k
 Post subject:
PostPosted: Fri Jul 09, 2004 5:32 pm 
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mechanical advance is beter if i'm not mistaken
makka

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drmini in aust
 Post subject:
PostPosted: Fri Jul 09, 2004 7:11 pm 
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Location: near Baulkham Hills, NSW
All Minis have 20-30* mechanical (centrifugal) advance at crank, even if the vac advance is not working..... 8)

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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