Street Fire Ignition Control

[GJM85]

Street Fire Ignition Control

 

I'm having trouble finding anyone who will regraph distrbutors in my area. So... the question is, does anyone know if running this ignition control would be a suitable substitute for a regraph of a 5k electrionic dizzy?

 

I'm thinking of running an early breaker points dizzy with the adjustable stater plate (which I have), fitingt a Hot Spark ignition module to replace the points and using the Street Fire to control the ignition, as opposed to having my 5k electronic dizzy regraphed.

 

Anyone?

Edited July 23, 2011 by GJM85

[kickn5k]

So that controls the whole curve and does cdi?

What's it worth and do you have to run an MSD coil?

Being an MSD product it will be good quality. Just depend if it fits into your budget.

We have a couple of good dizzy shops in Vic. Google "ignition torque" or "performance ignition/scorcher". They should be able to help and post interstate. That's if you choose not to go the MSD.

 

Stu.

[GJM85]

It's $150 through MSD in the US. Then you've gotta factor in the exchange rate and postage cost.

It's between $215 & $300 here in Aus. There are instructions available on the link i posted and it appears to be a very easy install to a standard points dizzy.

The low end multi spark function would awesome for low end performance.

Edited July 23, 2011 by GJM85

[kickn5k]

That's cheap at all those prices. The low end multi spark would be awesome. I'd expect to pay atleast $250 for a regraph of your leccy dizzy. Seems like a good thing.

 

Stu.

[GJM85]

Found one on boost cruising for $140. Going to pick it up right now.

[styler]

Its an ignition box that improves spark and adds multispark discharge - CDI

and sometimes rev limit which is useful but it doesn't do the actual ignition

timing, although it is good its only going to improve the effectiveness

of the current curve, which may be fairly mild if stock.

 

Electronic dizzys only relate to the pickup - ie the sensor part, the rest is mechanical and uses

weights, pins and cams to rotate the shaft ie twist it when in motion to provide

variable advance as the unit spins, the more rpm the more the shaft unit twists ie advances.

 

In a dizzy recurve you try to make the most powerful curve, without detonation and interesting that

sometimes it can be more mild than the most aggressive curve without detonation.

 

Its in 3 parts.

 

The Initial (Min)

The Ramp (Min to max)

All In (Max)

 

Min has to be low enough so the engine doesn't detonate when starting or use reduction starter

The ramp is as fast as possible without detonation

The max as high as possible without detonation

 

The fun is that all 3 are linked and so changing one changes the others and may put it out,

it takes a while changing springs, weights and travel and base timing to get all 3 parts working together

but it really is a good modification for a worked motor.

 

Performance ignition places have a dizzy machine and loads of weights/springs to play with and they

just get your engine specs and make a curve to suit.

 

Yeah there's no way a more powerful ignition system would be comparable to a dizzy regraph in terms

of performance, they are just 2 different things altogether.

 

Also you are probably going to need a new coil to suit the aftermarket ignition box.

Edited July 24, 2011 by styler

[Twinky]

Your best bet is to try to find an ignition only ECU. Lock the dizzy and then you can have whatever ignition curve your heart desires.

[Boosted]

Problem being Ignition only ECU's are rare as rocking horse poop, trust me I've looked. You've got the Megasquirt option which is cheapish, but for a reason, though some people are having success. Spoke to Haltech and they used to do an Igntion Only computer, which would be pretty old now if you could find one. They recommended the E6X before they bought out the new line of ECU's, but even then it was a $1K purchase + maps or tuning. The with the cost of webers, you start to wonder why you don't just buy a set of throttle bodies and move on from the Nostalgic look ?

Jaycar do a programmable ignition, but the map resolution ain't greta and it can only work within the limits of the rotor timing with the post in the dizzy cap, about +/- 20º or perhaps less.

So ... yeah... options aren't great.

[Twinky]

Hehe... Funny you say Haltech. I actually have an E6 that's going on my 5k.

If you look on ebay there is an E6A and E6X for sale around the $600 mark.

[ke70dave]

there was a bloke selling a wolf 3d for $400 the other day.

 

just need to keep a look out.

 

also nothing wrong with mega squirt, I've helped my mate tune his RX7 on one, 320hp (measured on dyno at wheels) on E85 petrol. so it has the goods to tune the little 4k :wink:

 

in fact for a while there we ran it as an ignition only ecu, just had the carby doing its thing, programmable ignition. worked well.

Edited July 25, 2011 by ke70dave