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TWIN GAS RESEARCH

Started by _JNR_ATE_ , Jul 29 2006 06:41 PM

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#1 _JNR_ATE_

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Posted 29 July 2006 - 06:41 PM

Hey guys, im awaiting some good tax money coming back and really wanna explore the Twin Gas research gear for a 308.

Has anyone got straight twin gas research theres?

Need as much info as possible, what i have to what i need to change.

I have a pre pollution quaddy, performer manifold, re-curved dizzy set for premium, L34 heads with stellite seats for gas, and my cam which is picked in regards to my stall, 3.55 diff ratio and head work with 9:8:1 compression

Do the gas research complete kits come with a tank and all lines aswell.

Obviously gas leads, plugs and so on need changing aswell, anythign i forgotten?
Anyone give me some help at all.

Cheers
JNR_ATE

Edited by JNR_ATE, 29 July 2006 - 06:47 PM.

#2 knoath

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Posted 29 July 2006 - 09:58 PM

Hey JNR ATE, I don't think a tank is included in a kit, nor will the lines... you may get the fittings, but the flexible line is about $5 mtr and any conversion place will sell you that and the fittings.
You may get the lock off solenoids with it, but the filler neck you'll probably have to buy too.
Basically you'll get the two throttle bodies, the manifold ram to suit, two converters (prob B2) and the little 'brain' box to wire it all up.

Hope this helps.
:spoton:

#3 _Toranamuk_

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Posted 30 July 2006 - 10:49 AM

Contact Gas Research Australia direct yourself, they do sell complete kits to suit most vehicles from the filler cap, all lines, fittings, solenoids etc etc.

They can supply air filters & elbows, but these don't come as part of the kit.

They will go through your requirements with you as to what size mixers you will need for your engine & what options you want for your car.

The kit can start with a twin mixer, twin converter set up, then be upgraded as you go, if you require enrichment solenoids (like an accelerator pump).

If you do your own tuning it would pay to buy a tuning kit as well. It has several progression jets for tuning your light cruise mixtures, & 2 stage or 3 stage metering rods for tuning mid to full throttle.

If you get stuck or arent sure of anything GRA are easy to deal with & will be very helpful.

I've fitted several to various model, including some tough stroker toranas.

#4 knoath

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Posted 30 July 2006 - 05:00 PM

Oops, clearly i don't know enough! Sorry if I misled you.
I'm sure the guys at Gas Research will help you no end.
Good luck!

#5 davelh

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Posted 30 July 2006 - 06:02 PM

looking at doind a similar setup when i put the chev in, let us all know how you get on
cheers
dave

#6 _Aidan_

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Posted 30 July 2006 - 06:36 PM

I went an impco setup, purely due to cost. Its a single condenser/ with the carby and mixer in one as far as I know. 4 barrel 425cfm carby on a holley square bore. If I were to do it again I would go gas research and save the extra coin

#7 _The String_

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Posted 30 July 2006 - 06:43 PM

I've only got a single carb Gasresearch setup, but I reckon it rocks!
Got it done at Gasresearch in Melbourne back in 2001, all I got changed was an electronic dizzy to replaced my old twin-point one.
Same edelbrock performer manifold, same cam, same heads.
I haven't had it tuned since, probably should soon.....

#8 _devilsadvocate_

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Posted 30 July 2006 - 06:57 PM

I went an impco setup, purely due to cost. Its a single condenser/ with the carby and mixer in one as far as I know. 4 barrel 425cfm carby on a holley square bore. If I were to do it again I would go gas research and save the extra coin

I think you mean convertor(or can be called evaporator)......is your setup dual fuel at the moment Aidan?

#9 _JNR_ATE_

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Posted 30 July 2006 - 09:21 PM

Hi, thanks for your help so far, i want straight gas and twin throttle setup, wil speak to my cam man tomorrow and make sure its within range for what i need. I know the heads can handle anything i throw at them within reason and was hoping to use the performer manifold aswell.

My dizzy has been graphed at 14 degrees, do they change it themselves or will i need to get it done.
Anyone interested in a rebuilt, jetted pre pollution 680 quaddy after it goes on.

Cheers
JNR_ATE

#10 YiriSS

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Posted 31 July 2006 - 08:38 PM

in regards to the twin gas , take the car to gas research at dandy south

and the ignition , they will recommend you take the dizzy to ICE at cheltenham

you wont go wrong

#11 YiriSS

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Posted 31 July 2006 - 08:38 PM

in regards to the twin gas , take the car to gas research at dandy south

and the ignition , they will recommend you take the dizzy to ICE at cheltenham

you wont go wrong

#12 _chief_

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Posted 01 August 2006 - 06:10 AM

I had a twin Gasresearch set up on a 351 clevo I used to have. It had a progressive linkage setup on the throttle bodys so I used to try to use 1 as I was driving it every day. It was very UN-ECONOMICAL. The thing went through so much gas. I got it tuned and it still didn't fix the issue. I sold it off and put a holley 750 vac sec on and it used nearly the same $ worth of fuel. I had heaps more power and response on ulp. They are a good gas system for tuning but I paid $2200 for the system in 2000 and I was not happy with the overall package

#13 _jap-xu1_

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Posted 01 August 2006 - 06:52 PM

gas research has been sold to a mob in qld and they are deadset useless.
you can find a guy in vic who is known as the "gas man" who used to work at the "real" gasresearch and he will set you up with a proper setup.
the new mob are just small time mechanic mob who are looking for an easy dollar.

help you they will not.

#14 _JNR_ATE_

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Posted 02 August 2006 - 02:37 AM

Lol, well that didnt help me choose at all. At current, because i dont have anything, for the twin throttle body setup, new tank and all the gear, fitted and dynoed was $3500,

Goin to speak to them on saturday, cant get it fitted till about december anyways.

Cheers
JNR_ATE

#15 _devilsadvocate_

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Posted 02 August 2006 - 07:27 AM

Just to throw something else in here, who has experience in going straight gas (not dual fuel or simply a mixer sitting on top of an old carby)with conventional mixers on big motors, like the impco systems. Ive never heard anything bad about them, other than some putting them down as "barbecue rings".
GR are way too expensive and have too many moving parts(making them as difficult to set up as triple carbies) in my opinion and Ive seen nor heard any evidence to suggest that they really are better(other than from GR themselves).

Edited by devilsadvocate, 02 August 2006 - 07:28 AM.

#16 _Toranamuk_

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Posted 02 August 2006 - 11:50 PM

I'm not surprised at some of the comments being made about the GRA systems being un-economical,

I have fitted several kits over the years, & tuned a lot of engines for customers that have had "experts" fit & set up their systems.

Most suppliers only purchase an "engine" kit from GRA. The kit is basic & comes with no progression jets in the cruise supply lines, & a basic 2 stage metering rod that is usually on the rich side.

The majority of tuners/fitters don't seem to be aware of what tuning parts are available or what is even required to set a system up.

Because the systems come set up rich, the engine feels lazy can give the feeling of being lean, tuners will try & richen the system, & makes the engine feel even more lazy/gutless, & so the cycle begins again.

The secondary mixer can be changed to be later opening but then come on suddenly, or set up as a 1 to 1 non progressive set up.

Tuning is everything, & it seems that there's not many people who have bothered to understand what is required & how to go about it correctly.

I did not know GRA had been sold off, & i hope it doesn't go down hill. It is a good system, but definitely misunderstood.

Seen a system on a commodore in Adelaide a few years ago that used 2 600 Holley base plates with 425 impco mixers & L converters mounted to a "pyramid" type plenum chamber & bolted to an Edelbrock torquer manifold.

The owner was full of praise for it at the time, & it ran respectable times at the street meets i seen it at.

I simply believe that these systems are good, & that poor setup & poor tuning has given it a bad reputation.

#17 _JNR_ATE_

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Posted 07 August 2006 - 08:51 PM

I just came from Rapid Flow/Gas Research in Hoppers Crossing , melb.
Im getten the under bonnet twin carb, twin converter setup. unfortunately they dont reckon swapping the fuel tank for the gas tank is gunna be any great benefit because of ground clearance so its goin in the boot.

86 litre tank if i remember, booked in for the 18th sept which was earlier than GR in dandy quoted me and cheaper aswell.
Its not cheap but is the best alternative to $1.50/ltr

$3300 incl GST, fitted Dynoed the lot.

If i remove my fuel tank completely, as there will be no more fuel pump and stuff. How do u reckon i would go with dropping the exhaust straight over the diff.
Or even slightly under the diff so its the 6 inches past a open door or window rule.
For legality i mean.

Cheers
JNR_ATE

#18 _Toranamuk_

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Posted 08 August 2006 - 12:56 AM

Let us know how your system goes, hopefully they tune it properly for you.

Ask them if you can for what progression jet they've fitted to the idle circuit, & to show you where it is in the hose, & what metering rods they've used for the "main jet".

The higher the No the thicker the metering rod & the leaner the mixture will be, ie- a 55 rod is leaner than a 45 rod.

As for Vic exhaust laws i'm not sure, but in SA the exhaust must exit 40mm past the rear most body seam (the rear panel joint in a sedan & hatch) & cannot exit to the left (45* to left from rearward is maximum).

TOO MANY RULES !!!!!! :cry:

#19 mikew

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Posted 09 August 2006 - 12:05 PM

Hmmm.... I'd have another talk to them about options for mounting a tank or two smaller tanks under the boot. They may be trying to discourage you because it's easier for them to just put the tank in the boot.

I really miss my boot! The tank and hoses etc take up a lot of space! If I had my time over I'd try to keep the tank out of the boot.

Mike

#20 _Aidan_

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Posted 09 August 2006 - 06:35 PM

I went an impco setup, purely due to cost. Its a single condenser/ with the carby and mixer in one as far as I know. 4 barrel 425cfm carby on a holley square bore. If I were to do it again I would go gas research and save the extra coin

I think you mean convertor(or can be called evaporator)......is your setup dual fuel at the moment Aidan?

its straight lpg

#21 _JNR_ATE_

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Posted 10 August 2006 - 08:02 AM

Thanks Toranamuk, wil have to write all that info down, lol
Am gunna get em to dyno before the gas is fitted and then compare with the after figures, i know the fuel per km ratio, so the gas will be known soon aswell.

Cheers
JNR_ATE
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