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Ignition Coil --(Dustin)

 
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hod rodder


Joined: 04 Oct 2001
Posts: 15499

PostPosted: Sat Aug 12, 2000 3:12 am    Post subject: Ignition Coil --(Dustin) Reply with quote

What sort of coil should i be using is it worth the wile of upgrading to an electronic dizzy or just staying with the points ?????
current set up
twin 40mm IDF webbers
Ported & Polished and Shaved Head
Stage 4 38/70 Crow Cam 3000 - 7000 power band
Re-Graphed Dizzy
Stock 1600 bottom end (Re-building a blue printed and balcened 1600 bored 120')
Extractors & sports exhuast
any advise
stick with the stock ignition set up ???
can u safely bore a gemini block to fit the 2 lt pistons i think its 200 tho ????
will the bores barrel ???
is 120 as far as u can go ???

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hod rodder


Joined: 04 Oct 2001
Posts: 15499

PostPosted: Sun Aug 13, 2000 4:52 am    Post subject: Re: Ignition Coil --(Adam Gibson) Reply with quote

Er, I wrote a long and elaborate response then accidentally cleared it, so instead you can get the short version.
In your modified engine a coil upgrade would probably be worthwhile on the condition that you upgrade the rest of the system at the same time, for in a standard gemini ignition the points are the weak link, hence the ballast resistor. If you thoroughly upgrade the entire ignition system then you may want to consider upping your spark plug gap, which should increase the burn rate and percentage combustion. Just play around with it, go nuts.

As for boring a gemini block, try making it watch "who wants to be a millionaire" or "Judge Judy" that could bore anything to death.

or

As for boring a gemini block, to bore for two litre slugs we are talkng 197 thou, er, you asked "can u safely bore a gemini block to fit the 2 lt pistons" that REALLY REALLY depends on what you mean by 'safely' cos, well you can and lots of people have and do...... er, of course there is two ways to go about it, bore to 197 thou over, fit a standard monotorque gasket and bolt it all back together again.
The other route is to bore to 197 thou, o-ring the block and fit a custom copper gasket and use brand new head bolts.

Er, either way you go you may or may not end up losing a headgasket, but well if you choose the shoddy route expect to lose a headgasket, if you do it properly be prepared for it happen but it is not much more likely than losing a headgasket on an hot stockish engine.
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