 Turbo 20v 4age |
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 Jul 19, 2004 - 1:00 PM
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 Enthusiast  Joined Aug 19, '03 From Buffalo,NY Currently Offline Reputation: 0 (0%)  |
My friend and i are working on his St celica and we want todo a 4age 20 v swap.
so im trying to source the parts to make a turbo charged 20 v. we plan on doing this forged pistion's forged rods apr studs better head gasket(Havent foudn one yet) but the problem is the turbo setup dotn know what turbo togo with? im thinking a t3/t4 or just a t3 another problem is to find a excuasht manifold. would it have to be custom? thanks |
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Jul 19, 2004 - 1:27 PM
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 Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
Lots of people go with the T3, unless you plan to make a lot of horsepower.
You'll most likely have to build a custom exhaust manifold, or find one somewhere...if it'll fit a 16 valve 4A-GE, it can be modified to fit the 20 valve 4A-GE. I'm assuming that you're going to go with a AE111 4A-GE right? Are you going to use the 20 valve's ECU, or go standalone? Are you two doing the swap yourselves? I highly suggest reading through the following links before you start this project, as it's going to be very difficult. It'd be sweet to have a 20 valve 4A-GTE though.  http://www.turbocorolla.com/home/default.htm http://www.billzilla.org/carindex.htm http://www.club4ag.com/technical_main.htm -------------------- New Toyota project coming soon...
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Jul 19, 2004 - 2:14 PM
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Enthusiast Joined Aug 19, '03 From Buffalo,NY Currently Offline Reputation: 0 (0%) |
plan on using stock ecu, using a silvertop 4age. and thats what i thought about the excuaht manifold something custom. thanks for the link |
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Jul 19, 2004 - 3:03 PM
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Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
Why silvertop? The AFM will be far worse for boosting the engine than a MAP setup(like the blacktop has) would be. Plus, you'll be replacing most of the components(rods and pistons) that were lightened when Toyota introduced the blacktop 4A-GE anyway. And it's only a few hundred dollars more...you'll already be spending thousands for everything else.
 Are you going to do the swap yourself? -------------------- New Toyota project coming soon...
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Jul 19, 2004 - 4:12 PM
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Enthusiast Joined Aug 19, '03 From Buffalo,NY Currently Offline Reputation: 0 (0%) |
not doing the swap my self , he works at a toyota dealership so he has connection though toyota mecahnic's. we are jusr sourcing the part's togethere. the black top is about 1600 and far way to much .. unless you can find a cheaper black top? i dident know about that afm setup though.. that really sucks.. |
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Jul 19, 2004 - 7:04 PM
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 Enthusiast Joined Jan 29, '03 From San Diego, CA Currently Offline Reputation: 0 (0%) |
Looks like im not the only one who is planning on doin this.
-------------------- Chris Malaqui
Non-running Celica |
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Jul 19, 2004 - 8:03 PM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
I believe the 20V internals are already forged. What you need to do, is either swap in 4AGZ pistons or go with an aftermarket turbo set. That's about it. I personally would worry more about the actual swap than things like forged internals and which turbo to go with. Handle things according to when they come up... instead of going straight to the "fun stuff". It's like throwing a victory party before the competition starts...
Anyways... the silvertop is AFM... but you can still go with a MAP set-up on that motor. It's just a matter of parts and wiring. If you're looking for a lot of power... go stand alone on MAP. This post has been edited by Kwanza26: Jul 20, 2004 - 1:25 AM -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Jul 19, 2004 - 8:10 PM
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 Enthusiast Joined Jan 8, '04 From LA Currently Offline Reputation: 0 (0%) |
Yeah, get the blacktop. It'd be pretty weak to go silvertop
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Jul 19, 2004 - 8:28 PM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
Actually... it really doesn't matter too much (black or silver) if he's gonna go turbo... in exception to one uses AFM and the other MAP. The real differences between the Blacktop and Silvertop... head variations, compression and VVT. The VVT system engages slightly different, and allows correction throughout the entire rpms band. The other differences is the cams are slightly more agressive and the compression is higher. The head is also slightly different along with slightly larger ITB's... but that's all little differences that would only mean a few horses in a turbo set-up, assuming you keep everything stock. The silvertop can be made every bit as good as the blacktop. -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Jul 19, 2004 - 8:48 PM
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Enthusiast Joined Aug 19, '03 From Buffalo,NY Currently Offline Reputation: 0 (0%) |
^thanks for the info
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Jul 19, 2004 - 9:01 PM
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Enthusiast Joined Jan 8, '04 From LA Currently Offline Reputation: 0 (0%) |
No, it'd be only a few hp in an NA engine, once you turbo it, every little difference becomes a LARGE difference in hp; you gain more hp every psi level |
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Jul 19, 2004 - 9:19 PM
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 Enthusiast Joined Dec 27, '02 From Sleep in Warren chill in clinton twp, works/school in detroit Currently Offline Reputation: 1 (100%) |
keep it simple blacktop 20v
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Jul 20, 2004 - 12:23 AM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
They are very small advantages that do not justify paying more than twice that of a Silvertop. Under forced induction, those small advantages are nullified because they're used for an n/a set-up (ie: higher compression, larger ITBs, VVTi)... This post has been edited by Kwanza26: Jul 20, 2004 - 1:25 AM -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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