MicroSquirt.com read only forum (Jan.15,2018)

Hey Dave,

After thinking about all the pro's and con's of the gas system from the converters to the plenum, I was thinking I could do this better than GRA and design my own throttle body controlled by MS like in an injection system. What do you think?

Cheers,

Shaun

Hey Dave,

I understand what you are saying completely. I have read into it a quite a bit and I agree with you completely, LPG in Australia is pretty much rubbish but you can buy 100% propane, not from petrol stations, but at outlets which allows car fill-ups. I am trying to remeber the name of the ...

Hey davezed,

To get the performance of the N/A LPG engine compression needs to be brought up quiet a bit 11:1ish. The octane rating on LPG is much higher ~ 106 - 120 (I have read sources that state both so I assume somewhere in between is believable).

I heard that about the Melbourne GRA as well ...

More power is to be had with a LPG only setup than with a petrol only setup. Only if the engine is rebuilt to suit though. Just add a hairdryer (I love that)

Yes, that is what I meant about boost and vacuum. You knew what I meant.

I feel much more comfortable to use the MS - II because it seems to ...

Hey Davezed,

The hairdryer (lol) has had alot of money spent on her. Although, the most important thing is the tune and a good dyno tuner is the single most important ingredient. I will not be starting the engines life on a MS - II system. Instead of have gone with a Haltech IG5 to get it going.

I ...

Hi davezed,

I am looking at producing 550 - 600hp out of my engine. To explain my setup further it is a 4.0Ltr OHC TFI ford engine with forced induction. So the N/A flow rate of the throttle body becomes redundant as the turbo will force air through it, which is why I have gone down the 2 ...

Hi davezed,

Hopefully I won't need to run the extra fuel bit that you are talking about but I would to know more about this extra gas under acceleration.

I will be running 2 fuel lines to 2 B2 converters to 1 s480 throttle body so it should supply enough fuel. I can still moddify the throttle body ...

Well my setup consists of a Gas Research Throttle body, which is effectively a a LPG carby, turbo and will use the standard tfi ignition.

I was planning on using all the sensors anyway just for the information.

Cheers Megascott

No one has disagreed with keithmac so can I take this as gospel???

That is what I was hoping. So the fuel calcs are completely independent of the ignition timing.

So I could build another MS - II and just not run any of the wires for the EFI side of things in the loom and it work exactly the same as an ignition only computer. Excellent.


Cheers,

Shaun