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Old 08-15-2006, 11:31 PM   #1 (permalink)
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My spare motor: plans.

Okay so as some of you know, I've got a spare redtop that's been rebuilt.

It currently has a port & polished head, balanced bottom end, new factory pistons/rings/gaskets/etc.
Never been run. Sitting sad and lonely on the engine stand.

Based on how my current engine goes, there's no point in putting this one in, without an aftermarket computer.
The factory engine already feels like it needs to rev higher.
So I'm going to buy the Apexi Power FC to run it.
More than likely, this will be my first purchase of the lot... I can run it on my current engine, and let it rev like it should.

Since I'm going to have an aftermarket computer for my 'racey' motor, there's no reason not to do all of the things that you cant really do with a standard computer.

Like getting the cams reprofiled, higher compression, harder valve springs, lighter/stronger pistons/rods.

Basically, I want to build the engine to be capable of widthstanding 8500rpm without a sweat, and also making some usable power at that sort of revs. 9000rpm would be nice for bragging rights, but I doubt I'd still be making power there, and I'd rather not stress the engine that much I suppose.

My current shopping list of parts I think I will need is:
Revised valve springs to widthstand higher RPM range (TRD or TODA items most likely)
Apexi PowerFC ECU (Plug and play with the redtop)
Larger injectors to cope with higher RPM/HP (Any idea on what top feed injectors would be suitable? I know that celicaRA45 is running supra injectors)
An upgraded fuel pump... Necessary? perhaps.
TRD bearings for mains & Big ends.
Revised cam profiles... Most likely reground factory cams. (Since I've got two sets)
Light weight custom forged pistons with 12:1 compression. ($$$ ouch)
Strong rods, capable of sustained high RPM forces... the last thing I want, is a piston flying through the head. (Probably more $$$ ouch)
Bottom end rebalanced, for lighter pistons/rods/etc

Okay, now I'll be honest, and say that I'm not entirely sure what parts of the above list is necessary, and whether or not some of it is overkill for my application.

I dont know what sort of HP an engine like above would be capable of, and I dont think there's any way to really know until you do it.

However I'd imagine it would be worth maybe 20-50 HP. in conjunction with bolt on bits like intake/exhaust/etc. Seeing as how the engine is so highly strung already, I can imagine that results wont necessarily be as good as you'd hope.
125hp per litre is a lot for an NA engine!

I'd be happy if it pushed the current powerband up another 1000rpm, and made it so that I could reliably keep it at that sort of RPM all day long if I wanted.

So, anyone have any thoughts?
This is a fairly long term plan of course.
I've got a few suspension issues that I need to sort out, before I bother aiming for more HP, or starting on this.
I know that celica RA45 AKA glenn would have some useful input, but I've been having trouble getting hold of him.

Last edited by Roman; 08-15-2006 at 11:38 PM..
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Old 08-16-2006, 07:22 AM   #2 (permalink)
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WOW!!!

Sounds like some nice upgrades but its all over my head dont know THAT much about what you can and cant do with BEAMS yet!

I'm definately gunna invest in a EMS for mine in the near future but until more info comes to hand on what can be done maybe not much else.

I thought about other smaller things like fuel pump, new alternator, lighter power steering pulley and alternator pulley

Id love to bolt on some quad throttles but dont know much about them yet and not sure if you could do just that mod and thats it, hence I dont know much about them yet!

I guess thats what were all here for thou ay, finding out more about BEAMS!!
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Old 08-16-2006, 08:15 AM   #3 (permalink)
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thoughts would be talk to glenn, he has all those parts or can have them made for you through his contacts in australia. Its gonna cost you some grip though.

I believe he has the valve springs, cams, pistons, and Rods for sale.
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Old 08-16-2006, 07:46 PM   #4 (permalink)
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Okay, so I've just talked to Glenn.

Basically, the consensus is this:

Standard rod/stroke ratio is only good for 8000rpm.

Custom pistons/rods are needed, with longer rods, and the gudgeon pin moved further up the piston.

So I've got two options really... Get a powerFC, maybe some cams, keep powerband under 8000rpm.

Alternatively, spend a lot more $$$, make the engine capable of sitting on 8600rpm all day long, have an engine that's a bit more serious.
According to him, this would require:

A lightened crank, approx. 2kgs worth of material removed
custom rods/pistons with 12.5:1 compression, and revised rod/stroke ratio
TODA blank for intake cam, billet cam for exhaust side
custom springs/retainers
An ECU that can control VVTI
7MGTE injectors

If I decide to go down that path, it's a lot of $$$ invested. It would take me at least another year to save for all of the parts & labour required.

If I'm going to go for that sort of RPM, I think I'll need some supporting mods too... Like perhaps an oil cooler for the gearbox, and other things like that which you dont think about!
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Old 08-16-2006, 11:03 PM   #5 (permalink)
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Yeah, the prices are high, but the benefits are outstanding and your motor would kick ***!
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