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pristic

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Sydney AUS

8th Jan, 2008 at 12:10:11pm

Hi,

My valves were leaking so the head came off.
New guides fitted and valves recut.

New gaskets and all back together. While head was off, marked top dead centre...

Now, the advance is 43deg... anything less and it runs pretty crappy... 43deg and itll light up the tyres at 7psi (9.5compression)

For some details, its a ported 202 by GR, RE13 cam, T2 hiflowed, and not intercooled yet. The dizzy is a pulsar ET Turbo one modded to suit (again by GR) its an 1132.

Is that too much advance? The engine seems to want that.

Pete

Edited by pristic on 8th Jan, 2008.

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Bat

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Bermingum

8th Jan, 2008 at 12:16:11pm

Hi,
*surprised* Way too much!
A N/A motor would only run 34max!
You need to retard the timing when on boost.
How are you getting the 43deg, what advance curve is the dizzy giving?
Is 43deg with vac adv connected?
Cheers,
Gavin :)

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pristic

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Sydney AUS

8th Jan, 2008 at 12:28:26pm

Yeah, its with vac advance connected
If its retarded, it runs crap. Wont go basically...
Dont know the advance curve, Graham Russell modifies the pulsar dizzy;s that we run to suit the motors.

He was suprised at the 40+advance too.

Peter

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robert

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uranus

8th Jan, 2008 at 01:35:23pm

peter ,test it with the vac advance unconnected , that will give you a figure to compare with others , i think theres about 15 edegreees in the vac ,so that would put you at 28 ish ? that sounds about right !
regards robert



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Turbo Tel

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Delaware, USA

8th Jan, 2008 at 03:05:36pm




On 8th of Jan, 2008 at 01:35pm robert said:
peter ,test it with the vac advance unconnected , that will give you a figure to compare with others , i think theres about 15 edegreees in the vac ,so that would put you at 28 ish ? that sounds about right !
regards robert





I think Robert is correct, your real advance is in the 28 degree area, when you free rev the engine its not under load so 40 odd would be expected.. Driving without the vacuum pipe connected should feel fine, the vacuum advance is just there to advance the ignition when not under load to save fuel and emissions.

website:- http://www.terryhunt.co.uk


pristic

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Sydney AUS

8th Jan, 2008 at 08:58:21pm

Ah ok! Sounds good!!

Thanks,
Peter.

PS: Ill get it tested with the same light and vacuum advance disconnected and let you know what it reads

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turbo hogster

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stowmaket suffolk

9th Jan, 2008 at 04:12:37pm

dont forget the macanical advance as well this will bung some more on top of the 28.

best bet run no vac and lock machnical for now and set at 26 deg and no more.

always looking for them bigger bunches of bannanas

Turbo Tel

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Delaware, USA

10th Jan, 2008 at 09:32:36pm




On 9th Jan, 2008 turbo hogster said:
dont forget the macanical advance as well this will bung some more on top of the 28.

best bet run no vac and lock machnical for now and set at 26 deg and no more.


10 degrees of static advance, plus 18 degrees of mechanical advance (turbo dizzy) and you get 28 degrees. add the vac advance (if any) and you have your "total" advance.

website:- http://www.terryhunt.co.uk


pristic

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189 Posts
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Sydney AUS

11th Jan, 2008 at 05:00:28am

Thanks Lads. Yeah, looks like it was vac advance throwing us off.

Ah... now I need k-lined guides and stainless steel valves... then up ze boost :)

Oh, and have to fit the intercooler too :)

Peter.

1132cc Turbo ~120 bananas ATW - Fun Fun Fun

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