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Location:
Perth, WA
Registered:
May 2002
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Formula Atlantic 4A-GE
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Mon, 08 July 2002 06:31
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Just added up all the bits to biuld a Formula atlantic 4AGE, not including Block and head, dry sump or any labour..all genuine TRD items tho..
27 804 bucks in total... so for around 40k after its all said an done.. u too can have a bullet proof 240hp, 10500rpm screamer 
BTW, the crank is 9000 bucks alone.....
Mike
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Mon, 08 July 2002 06:57
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Haha, just the thing to take out the N/A 1800cc and under class at the next dyno day.
Hey, seeing as how the 7A-FEs were pretty even with the GEs, think how good a 7A-GE would go...... 76Kw??? Pfffft! 
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Location:
Perth WA
Registered:
May 2002
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Location:
Melbourne
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Mon, 08 July 2002 22:26
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you can pick up second-hand ones - generally out of NZ (there is a guy over there who builds them) "rebuilt" from about $Au15k
T
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Location:
Perth, WA
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Tue, 09 July 2002 00:15
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I thought it would be interesting just to add the bits up.
I am not going to use a 4A for my NA Sprinter, GenIII 3S-GE it will be 
Well, thats what i think.. what is the rev limit of the 3S when using stock rods and crank? I know the 3S will be a lot easier and user friendly to get a NA 220hp out of, cost half as much as a 4A, but will it rev? I want at least 8500 worth of revs.
Cheers
Mike
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Location:
Perth WA
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Tue, 09 July 2002 12:52
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Daniel,
Thats the next project that I'll be undertaking sometime next year. The 7A holds a lot of prospect, despite the long stroke of the motor. We've been doing a lot of work with a hybrid Honda 2.0l Vtec Motor, and with a bore/stroke of 85/89mm, the bloody thing still revs up to 8500rpm very strongly. With careful engine preparation and machining, a 7AGE should be able to rev as well up to 8500 or so!
The rods that were used on the 2.0l VTEC motor are stock B20B ones (CR-V), linished/polished/balanced/shotpeened. They are quite similar to the 7AFE rods.
MIKE==> The 3SGE should be pretty good to about 8200rpms...
Cheers
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Location:
Melbourne
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Tue, 09 July 2002 22:34
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gen3 3sge bottom end apparently good for 9k rpm. change cams, port, fit quad t/b's and aftermarket efi for approx 240hp. (i'll be trying it soon to see if it works!)
7age - i know of someone who has built quite a few - they are quite expensive to build, will make 250hp though, but are fragile - go BANG bigtime over ab out 8k rpm.....
you will need a 7a block and crank, custom rods and pistons, ported 20v head, custom flywheel, cams, and lastly - deep pockets.
T
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Location:
Perth, WA
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Wed, 10 July 2002 00:34
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Toby,
Just what I wanted to hear
My plan was a GenIII 3S, with the stock shim under setup, fit BIG cams, valve springs, clean up the porting a bit, quad 45-48 throttles, a set of high comp forgies along with a full rebiuld.
Do you say 9000 with stock pistons? and if the stock pistons ar eok, a quick head skim should get the compression ratio up to 11:1 or there abouts.
Cheers
Mike
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Location:
Melbourne
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Wed, 10 July 2002 03:13
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mike,
form what i have picked up the c/r is around 11:1 already (in reality prob 10.5:1..)
no need to fit the forgies - why spend money when you don't need to.
T
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Re: Formula Atlantic 4A-GE
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Wed, 10 July 2002 06:43
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I'm only doing a 16v job.
And I wont be taking it about 7500 rpm because the 7a's bottom end isnt strong enough to cope. Although i take mine to 6500rpm and haven't had i bit of trouble... yet...
A 7AGE isn't that expensive, if you keep your eyes open, you can come across a 4a now and then, theres enough of them flowing thru the toymods for sale section.
I already have both and am on my way !
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Hmm.... Sounds like turbo power isn't enough, eh?