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Build The Ultimate Starfire - Yes, Starfire

Started by _BRN 084_ , Feb 13 2008 09:58 PM

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#26 _Bomber Watson_

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Posted 14 February 2008 - 10:30 PM

Greg.

I'll send you a Starfire and a 50 dollar note if you build me one like you said....

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#27 rodomo

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Posted 14 February 2008 - 10:42 PM

Does it matter that the pushrods will be running up and down in the ports and the top (and maybe the second) ring will be running in the deck plate? :blink:

Cancel that

The pushrods will run diagonally through the head like a Ford Crossflow

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#28 _82911_

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Posted 14 February 2008 - 11:15 PM

Canted valves mate!
Single compression ring on the latest SVO pistons.
Hey bomber.... add acouple of zeros and I'll think about it. :spoton:

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#29 _BRN 084_

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Posted 15 February 2008 - 10:54 AM

Some of you guys have some crazy ideas! Far out.

Seriously though, how far could a Starfire be bored without the need for sleeves? 90thou? I'd still want decent amount of wall, as with boost it's gonna need to be pretty strong.

Much like Comm VC I'm thinking cut down VK manifold, custom turbo manifold (someone has already offered to do it for me!), turbo around a GT30 or thereabouts, quality ported head and valvetrain, after market ECU and good ignition, keep the rods and prep them, ACL dished pistons and away you go. Will be interesting to see how it goes.

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#30 rodomo

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Posted 15 February 2008 - 11:08 AM

What type of fuel system are you thinking?
Carby? E.F.I?

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#31 _BRN 084_

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Posted 15 February 2008 - 02:25 PM

In this day and age, I think EFI is the obvious choice, although I have been investigating LPG set-ups as well. If I use the VK manifold, the fuel rail is easy to cut down, and the computer could either be an aftermarket unit like a Microtech, or a suitably tuned Delco. The LPG system would be a bit harder to set-up initially, although there is the benefit of the $2000 government payment, and the lower running costs in the long-term.

As much as I love to see a good carby engine, I think if you're going all out an EFI system is the better choice.

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#32 FastEHHolden

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Posted 15 February 2008 - 02:42 PM

Imagine admitting you owned one!

Imagine getting beaten by one!!

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#33 rodomo

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Posted 15 February 2008 - 04:22 PM

In this day and age, I think EFI is the obvious choice, although I have been investigating LPG set-ups as well. If I use the VK manifold, the fuel rail is easy to cut down, and the computer could either be an aftermarket unit like a Microtech, or a suitably tuned Delco. The LPG system would be a bit harder to set-up initially, although there is the benefit of the $2000 government payment, and the lower running costs in the long-term.

As much as I love to see a good carby engine, I think if you're going all out an EFI system is the better choice.

So the computer will only control fuel in this application?

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#34 _BRN 084_

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Posted 15 February 2008 - 04:36 PM

Basically, yeah. If I went the aftermarket computer route, then things like multi coil ignition would be investigated, although engineers have an intense dislike for aftermarket ECUs, so the Delco would be the most legal avenue. And with that being the plan for the car, it makes the most sense.

Edited by BRN 084, 15 February 2008 - 04:37 PM.

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#35 _mervex_

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Posted 15 February 2008 - 04:39 PM

Seriously,why not cut down a (spew) 250 falcon head and turn it around.must be plenty of them lying about.

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#36 Heath

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Posted 16 February 2008 - 01:33 PM

I imagine securing the 250 head to the block would be the most difficult bit of the job...

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#37 rodomo

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Posted 16 February 2008 - 01:47 PM

Bugger it!
If we're gonna do that, lets go DOHC! :spoton:

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#38 _CHOPPER_

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Posted 16 February 2008 - 01:50 PM

I imagine securing the 250 head to the block would be the most difficult bit of the job...

The bolt holes are more or less in the correct position. Good to see Ford did something right.

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#39 _CHOPPER_

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Posted 16 February 2008 - 01:52 PM

I just wanted to join in the pissin' competition!

I don't care who joins in the pissing competition, just as long as everybody aims straight.

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#40 makka

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Posted 16 February 2008 - 05:10 PM

the biggest problem with the starfiers is that they use the same bore as a 173 so piston selection is made a bit harder, although I have hear of people boring a 173 to take 202 pistons.

when I get a place of my own in melb the building will begin, so I will be starting in around 3 months, now I have all the equipment that I need to build and modify engines

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#41 _mervex_

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Posted 16 February 2008 - 05:56 PM

all your own gear! cool,thats means you may as well cast your own alloy/unobtanium blocks for the starflier using the "zero gravity" phase only in inverse proportions, like Mclaren do!

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#42 _Bomber Watson_

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Posted 16 February 2008 - 05:59 PM

If it is the same sorta cast as a Holden six then theres no reason you won t be able to bore it out to 3.710" safely. thats standard bore of 3.650" + .060. Bit of a waste to go strait there though. Mind you its hard to get decent pistons in standard bore, so go 3.660" for starters.

.

Mervex, Makka already has a pile of unobtainium blocks laying around. They are 100,000 times stronger and only weigh 25 grams.

Cheers.

Edited by Bomber Watson, 16 February 2008 - 06:00 PM.

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#43 Heath

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Posted 16 February 2008 - 06:08 PM

I think 3.650" or 3.680" would both be safer options that wouldn't affect the power too significantly... depends on whether you want a handgrenade or not. Easy to get pistons for those sizes anyway

Edited by Heath, 16 February 2008 - 06:09 PM.

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#44 _Bomber Watson_

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Posted 16 February 2008 - 06:34 PM

Wrong. 3.680 yes. But you cant buy decent pistons in STD bore, that i have seen so far anyway. They start at +.010. Thats why i suggested he bore it to 3.660", then theres still a few rebuilds left in it if nothing blows up.

Cheers.

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#45 _purpleLC_

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Posted 16 February 2008 - 07:56 PM

What engine did the HDT rally gemini run??
It was a stroked starfire motor, why did they pick that over the twin cam Isuzu motors, must be some reason.

And whats the problem with the push rods etc,
I think in 2006 the race motor that was voted the best by
all the manufacturers (that race) was the chev engine running in the Corvettes.

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#46 _mervex_

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Posted 17 February 2008 - 05:57 PM

YEAH,stuff the starfire motor,cut 1 bank off a corvette motor,a la Triumph TR7
therefore the pushrods are no longer a problem(the corvette was OHC, right?)i wouldn't wanna make ANOTHER stupid comment!

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#47 _purpleLC_

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Posted 17 February 2008 - 07:23 PM

YEAH,stuff the starfire motor,cut 1 bank off a corvette motor,a la Triumph TR7
therefore the pushrods are no longer a problem(the corvette was OHC, right?)i wouldn't wanna make ANOTHER stupid comment!

Corvette C6.R
Valvetrain : pushrod with overhead
steel valves 2 per cylinder

Yep they still run pushrods in the old girls or rather
new girls!!

Edited by purpleLC, 17 February 2008 - 07:26 PM.

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#48 Heath

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Posted 17 February 2008 - 09:31 PM

But you cant buy decent pistons in STD bore, that i have seen so far anyway.

That doesn't sound right to me... what about people running a 179 +.060" etc?

You may be correct; I'm going 30thou over anyway so it's nothing for me to lose sleep over but I didn't think that would be the case.

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#49 _Bomber Watson_

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Posted 17 February 2008 - 09:42 PM

Heath, not sure mate havnt looked into it that far.

I know all the engines with 3" stroke have a different piston pin height to the big strokers, so thats something to keep in mind.

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#50 _The Stig_

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Posted 18 February 2008 - 04:57 PM

Hmmm...tad oversquare

4" bore, 3" stroke - that's exactly the same as the 302 Chev...only with half the cylinders
Would rev like the clappers, so I'd suggest beefing up the old pushrod valvetrain a bit :<_<: