Delco Nismo, 1984 300ZX VG30ET Turbo

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Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Mon Jun 03, 2013 11:55 pm

Hello all,

Well it's about time I finally got my @ss into gear and joined the Delcohacking site. I have been working on a delco conversion of a 1984 50th Anniversary edition Nissan 300ZX for over two years now. Yeah that's been a while, lucky it's a hobby and not a daily ride.

Originally a N/A automatic, there has been a few changes. The previous owner started by dropping in the Turbo engine, and that is about as far as he got. The rest of the work has been done by myself with the help of Antus, Ross from the garageofawesome.com.au and much technical support from VL400.

The project has reached the point where it has been able to drive down the local servo for $20 of fuel and 32 psi in each tire. More work to go, and I will cover the mods so far in additional posts.

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And better photos as they become available!!

Cheers, g0speed
Last edited by g0speed on Tue Jun 04, 2013 12:54 am, edited 1 time in total.

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby Holden202T » Mon Jun 03, 2013 11:58 pm

I have heard alot about this from Antus, good to see its finally driving ;)

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Tue Jun 04, 2013 12:08 am

First modification, automatic to manual conversion:

3x Borg Warner T5 manual transmission were sourced from the united states of awesome. Turns out only one fit in the car, who would have thought..? :lol:

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**Note : Coopers bottles for scale purposes only!!

Custom one piece tailshaft made from the old two piece. Turns out the AU 2+2 is about 25 cm longer than the US release, and the US tailshaft had to be lengthened and strengthened. R200 Turbo diff came in the same shipment and was swapped in as the N/A ratio = 3.7:1 vs the Turbo = 3.54:1

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Tue Jun 04, 2013 12:17 am

Rear end:
Tokico HP shocks, Eibach dynamic springs, nolathane bushes, heavy duty sway bars, and reconditioned brake calipers
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Front end:
Tokico HP shocks, Eibach dynamic springs, nolathane bushes, heavy duty sway bars
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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby antus » Tue Jun 04, 2013 12:28 am

Welcome aboard! Good to hear the car is running and see this thread appear!

:turbo:
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Tue Jun 04, 2013 12:45 am

Here's some mods that are directly Delco related. The intake manifold, collector, plenum and trottle for the 1984 300ZX VG30ET was replaced with the equivalent from a ~1992 Maxima VG30E.

The driving factor for this was a switch from top feed low impedance injectors, to a fuel rail high impedance injectors that can be driven directly from the Delco with no driver box required.
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Instead of using the HAL effect crank sensor, we have been working with VL400 to modify his ignition module to operate off the OEM Nissan optical crank angle sensor in the factory distributor.
A few modifications were made to the original design, but we now have a working prototype. Does anyone want to delco a Nissan VG, RB, SR or CA engine and use the factory distributor..? :thumbup:
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We tried to use a single LS1 coilpack and distribute the spark via the standard distributor, we failed but in hindsight I suspect it might have been a result of the spark plugs. But we will never know because now we have 6x LS1 coilpacks running fully sequential ignition from VL400's custom ignition module. Very awesome!
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Left-hand bank of 3 coils pictured
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Lastly this 'hot water bit' was swapped in from a late 80's Navara 4x4, which also has a VG30E. This particular part gave us the water temp sensor needed for the Delco, and the water temp gauge sender that was lost in the manifold swap. A new inline filler seen in the picture was needed to replace the original filler located in the 'hot water bit' that was replaced.
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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Tue Jun 04, 2013 12:51 am

Custom center console, showing AFR meter, ECU arm and engine start button. Battery isolation and orange strobe 'error' light for the Delco (seen hiding in foot well on left)
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And the red cable seen in the above pic leads back to the rear of the car where the battery has been relocated
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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby Holden202T » Tue Jun 04, 2013 6:27 am

lol I love the massive check engine light :) wont miss that in a hurry!

a lot has been done, hopefully the results make it all worth it :)

ps. your ignition module looks like its had a few running modifications I don't have on mine hehe.

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby delcowizzid » Tue Jun 04, 2013 10:55 am

great project cant wait to watch this progress
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: Delco Nismo, 1984 300ZX VG30ET Turbo

Postby g0speed » Tue Jun 04, 2013 11:34 am

Thanks for the support guys!

And the massive error light is not for comical effect, the theory is that at the track you have eyes for nothing but the track. No time to watch gauges and dials.

We plan on routing anything and everything we can through the delco and have a single point of warning for errors.

That would be a bright strobe light, get yours from jaycar for $19. They are self strobeing so just hook it up the 12v and ground it out to the delco error line.

It was very funny however when the tune was running so rich it filled the shed with smoke, and all you could see was a bright orange strobe flashing thru the smoke. Looked like something from a sci-fi movie :lol:

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