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Home > Help Needed / General Tech Chat > Max. ignition advance

TurboHarry

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263 Posts
Member #: 115
Senior Member

Austria, near Vienna

Just for interest: How much maximum ignition advance do you use at how much boost (intercooled) and at which CR?
Thanks! Harry

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm


Jimster
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9408 Posts
Member #: 58
455bhp per ton
12 sec 1/4 mile road legal mini

Sunny Bridgend, South Wales

CR about 7.9:1 maximum advance is 58 degrees, with boost retard at - 10 degrees at 180 kpa

Team Racing

On 15th May, 2009 TurboDave said:

I think the welsh one has it right!


1st to provide running proof
of turbo twinkie in a car and first to
run a 1/4 in one!!

Is your data backed up?? one extra month free for all Turbo minis members, PM me for detials


wil_h

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9258 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

CR 7.3:1, boost 18psi (intercooled) max ignition advance 25 deg.

However, when my bro gets the mapable ignition finished we'll run more than that lower in the rev range.

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Turbo Phil

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4642 Posts
Member #: 20
My sister is so fit I won't show anyone her picture

Lake District

Jim 58 deg ... ??? are you sure ??

Phil. *smiley*

WWW.TURBO-MINI.COM


AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

yes he is...

Isn't boost retard great!

I'm using 7-8:1 (just for you mark!) and about 16 degrees total as my dizzy is shot and the whole engine isnt set up!

alex

AlexF


turbodave16v
Forum Mod

10980 Posts
Member #: 17
***16***

SouthPark, Colorado

Think harry means max advance under boost conditions Jim... That's the figure you're running under light throttle cruise surely?

What ign system you going for Wil?

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



wil_h

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9258 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

It's my bro (Ben-H) who's sorting it. he's built a Mega Squirt system, you'll hve read his posts about it on here.

It's currently working in his NA mini.

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


TurboHarry

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263 Posts
Member #: 115
Senior Member

Austria, near Vienna

If Jimster had this advance under boost and full throttle he would need a lot more head gaskets and pistons. *smiley*
Dave, what is your max advance?

Bimmer Twinky headed and turboed A-Series:
http://www.minifreunde.at/harry/projects.htm


turbodave16v
Forum Mod

10980 Posts
Member #: 17
***16***

SouthPark, Colorado

I honestly can't remember Harry...

I think it ended up at 5000 rpm at something like 26/27 degrees at 1.1 bar...

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY


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