GH Sigma EFI 351 V8

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13bsigma
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Re: G spec GH

Post by 13bsigma »

i just did the 12 wires for my microtech digi. . . lol.. :| good luck with that one!!!
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

Nah it should be fairly easy, I done an LT10s on an SR20det a few months back and it worked this one is pretty much the same apart from the sequential ignition
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

had a play today and put the tank sump on

Why did i opt for this over a surge/swirl tank or a fuel cell....well i dont like the idea of fuel system components in the boot on a street car and theres no room underneath for a surge tank plus i like the look

even with an external surge it will still have a tiny pickup tube and have problems supplying enough fuel

before doing any work on a fuel tank make sure it is professionally cleaned, i got mine steamed cleaned at my local radiator shop

heres the sump, made by competition engineering has two 1/2" ports
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once you decide where you want it you need to drill some 2.5" holes a template is provided, mark and drill the pilots holes then run through with a hole saw

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look fuel tank + flame and no boom boom, like i said get it cleaned well and it will be 100% safe to cut/weld
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Oh heres that tiny pickup tube
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welded
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I had to cut and fold the sump to follow the profile of the tank, a sump to suit a mustang is already the correct shape
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painted...yeah i know i said i was going to powdercoat it but meh its still sexy
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-10 feed -6 return
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all in
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Last edited by amgis_obrut on Mon May 02, 2011 7:38 pm, edited 1 time in total.
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
astronturbo77
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Re: G spec GH

Post by astronturbo77 »

looks very good mate! can wait to see a efi clevland, especially with a microtec
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81GL
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Re: G spec GH

Post by 81GL »

yeah... i like that. heaps better idea than a surge tank in the boot :think: .

Whats the legal side of cutting and modifying the tank? do you have to go through anything extra?
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

81GL wrote:Whats the legal side of cutting and modifying the tank? do you have to go through anything extra?
needs to meet ground clearance and dimension adr's, it may effect the vehicle’s departure angle but who knows its not something that needs o be certified, all i can do is drive it and see how the fuzz take it

A boot mounted fuel cell/surge tank needs to be certified, boots need to be fully sealed from the passenger compartment and drains need to be incorporated into the install in case of fuel spill/leak
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

just seeing if it fits in the bay

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GC75
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Re: G spec GH

Post by GC75 »

:thumpsup: :thumpsup: :thumpsup: :thumpsup:
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ISKA8
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Re: G spec GH

Post by ISKA8 »

:o :o :o thats tuff !! :thumpsup:
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Astron Boy
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Re: G spec GH

Post by Astron Boy »

Mmmm, that is sweet.

Top job.
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DanTurboLancer
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Re: G spec GH

Post by DanTurboLancer »

Great job on the Fuel tank Mick!!
Ha if you get pulled over for the fuel tank, that will be the least of your worries with what you are doing under the bonnet ;)

Atleast it will be black and harder to spot!

Also if you dont already have it, I have a copy of Microteck LT series wiring diagram book.
I can send you, or anyone else a copy.
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

cheers Dan

I dont think i'll cop much grief with the tank, though i think you may be right about the engine bay mods :)
funny thing is, I was driving this every day and passing a lot of cops even got pulled over for a breath test and they dont even care to question me about it :lol:

Thanks for the LT manual offer and yes i do have one here, though John from Microtech has drawn up a wiring diagram for me as its a somewhat unique configuration


Got that purple people eater going yet ??
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
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turbosigma
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Re: G spec GH

Post by turbosigma »

Fuel tank :thumpsup: - Install tow bar, may hide it a bit.
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DanTurboLancer
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Re: G spec GH

Post by DanTurboLancer »

^^^ thats not a bad idea, all looks pretty neat and hidden away fitted in the car but.

Ahh you know John?
He built and tuned my mates RX7
And Justin built my engine and will be tuning it.

Still collecting parts for the gay pride ship.
I want it up and running for next Mardigra but ;-)
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

DanTurboLancer wrote:^^^ thats not a bad idea, all looks pretty neat and hidden away fitted in the car but.

Ahh you know John?
He built and tuned my mates RX7
And Justin built my engine and will be tuning it.

Still collecting parts for the gay pride ship.
I want it up and running for next Mardigra but ;-)
good stuff i hope you got room for me and my orange bandanna

i dont think a towbar would fit now with the exhaust the way it is
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

time for an update

well theres been a lot done since my last progress report and its now running with the EFI
it now has

*ported heads, comp cams valve train, comp cams 280h cam, comp SS roller rockers
*36-1 trigger wheel, custom magnecor ignition leads,
*had to re route the brake lines to clear the ignition coils
*cut the front of the intake plenum and change the angle of the throttle body to clear the bonnet
*re routed engine bay wiring, move battery to boot
*wire in microtech
*new 85 amp alt (sigma alt with V6 commo internals)
*shift light in tach face, its a single 10000 mcd 3mm led and its bloody bright controlled by the ECU
*water pump warning light in temp gauge face
*rebuilt manualized trans with kevlar bands rabestos clutches (1 extra) 3000 rpm stall
* Hurst Pro-matic shifter in modified factory consul

Still needs a few things done then its off to Castlehill Exhaust to get tuned

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GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
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77galantv6
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Re: G spec GH

Post by 77galantv6 »

nice update, fair bit of work since last one.
any hopes for power outputs?
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ghuphill
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Re: G spec GH

Post by ghuphill »

cars coming up real good mate, wheel stands soon to come :thumpsup:
Last edited by ghuphill on Sun Oct 09, 2011 9:40 pm, edited 1 time in total.
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A112H
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Re: G spec GH

Post by A112H »

Very nice, been a while coming but a big change.
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turbosigma
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Re: G spec GH

Post by turbosigma »

Top work Mick.

Going to steal the microtech hand controller idea.

Just need to remote mount that 42r now. :P
mstrrab1992
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Re: G spec GH

Post by mstrrab1992 »

is that even legal??
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C_Fernance
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Re: G spec GH

Post by C_Fernance »

Yep. Registered and Engineered too I believe.
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

turbosigma wrote:Top work Mick.

Going to steal the microtech hand controller idea.

Just need to remote mount that 42r now. :P

lol its like Mitsubishi designed it for the controller, dont have the GT42 any more though I wish i did theres a heap of room on the drivers side :)


mstrrab1992 yep its legal registered and engineered, The next engine swap im planning will push the limits but I have the OK from my engineer and it JUST fits in to the RTA guide lines by a few cc's, its a smarter option and one that I should have gone with from the beginning, good thing is the Microtech is already configured to run the planned engine.... funny that ;-)
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81GL
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Re: G spec GH

Post by 81GL »

Looks angry! love it.
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

81GL wrote:Looks angry! love it.
sounds angry too

cheers
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
mstrrab1992
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Re: G spec GH

Post by mstrrab1992 »

i take my hat off to you, job well done ;)
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milotan
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Re: G spec GH

Post by milotan »

Just interested in what engine you should have done?
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

milotan wrote:Just interested in what engine you should have done?
the one that i might be doing :thumpsup:
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
mstrrab1992
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Re: G spec GH

Post by mstrrab1992 »

Lol youre crazy :)

in a good way.

ill be surprised if u dont put the 302 on ur lawn mower if u put the new donk in LOL
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amgis_obrut
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Re: G spec GH

Post by amgis_obrut »

well siggy is on a diet now its waaaayy to fat, so im stripping all the stuff that makes it comfortable (kind of)

I'll edit this post with a list of mods/removed bits and what they weigh

so far i have remove the sound proofing and under felt that was 22kg

drivers seat 18.5kg
passenger seat 17kg
Im tossing up what seats im going to fit, theres 3 reasons im swapping seats

1 drivers seat is broken

2 need fixed back seats for racing

3 std seats are heavy mofos

I have a choice of two seats one is 7kg without rails (on right) and the other is 9kg with rails (middle)
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GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
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