4age series

[Lamphant]

how many types of 4age's are they.....here in the caribbean (barbados) we only have/get 2 types which are the silver and blacktop (16v/20v) 4age's. i've seen in some other topics mention of blue tops and red-tops....... and was wondering what is the difference between these 4 "models" of the same engine

thanx

[Lloyd]

There is heaps of info around on the net about them. Do a google search for "4AGE generation" and see what you find.

http://www.users.bigpond.com/vidore/toy ... engine.htm

http://www.billzilla.org/4agstock.htm

Have a look in the tech section at www.club4ag.com too

[SIKTOY]

Not to mention the sticky at the top of this section ( Toyota Engine Stats - All you EVER wanted to know)

Pulled straight from there:

Engine Type Valv/Cyl angle Year Disp. BHP Torque [lb ft] Bore [mm] Stroke [mm] CR other remarks


4A-GE DOHC 4/50 83- 1587
4A-GE DOHC 4/50 85-86 1587 112@6600 97@4800 81 77 9.4:1 (Bluetop)
4A-GELU DOHC 4/50 86 1587 130@6600 110@5200 81 77 9.4:1 (Bluetop)
4A-GELU DOHC 4/50 86 1587 124@6600 105@5000 81 77 10:1 EU, (Bluetop)
4A-GELU DOHC 4/50 86 1587 120@6600 102@5000 81 77 9.4:1 (Bluetop)
4A-GELU DOHC 4/50 86 1587 115@6600 98@4800 81 77 9.4:1 cat, US version (Bluetop)
4A-GEC DOHC 4/50 88 1587 116@6600 110@4800 81 77 9.4:1 (Redtop)
4A-GEC DOHC 4/50 89-90 1587 116@6600 100@4800 81 77 9.4:1 (Redtop)
4A-GELC DOHC 4/50 88 1587 112@6600 100@4800 81 77 9.4:1 (Redtop)
4A-GELC DOHC 4/50 89-90 1587 115@6600 100@4800 81 77 9.4:1 (Redtop)
4A-GELU DOHC 4/50 90 1587 138@7200 109@6000 81 77 9.4:1 (Redtop)
4A-GE DOHC 4/50 90 1587 130@6800 102@5800 81 77 9.5:1 (Redtop)
4A-GE DOHC 4/50 91-92 1587 130@6800 105@6000 81 77 10.3:1 (Redtop)
4A-GE DOHC 5+VVT 91-95 1587 165@7800 120@5600 81 77 11.0:1 AFM, VVT (Silvertop)
4A-GE DOHC 5+VVT-i 95+ 1587 170@? 81 77 11.0:1 MAP sensor, VVT-i (Blacktop)

[Alex B]

cept blacktop not VVT-i like that says.

[Mr Revhead]

and silvertop not 11:1 compression....

check and double check
the misinformation on these engines on the net is astounding.

[Lamphant]

thanx alot guys, i didn't kno that there were dat much different types of 4age's out there. but by the way tings look it seems as tho the silvertop is the way to go in terms of torque........

but which 4age series do yall guys prefer. we here in the Barbados only get the silver and blacktop, so there ain't much to choose from

[Mr Revhead]

what do you intend to use it for?
racing? are you going to rebuild it at all? or just run it in a road car?

[Lamphant]

most likely racing it. i kno that de 20valve is probably best kept naturally aspirated and stuff, but de flow characteristics of the head shows that it could be useful if FI, but de engine is goin to be used as a street racing, daily commuter

[Mr Revhead]

then the best one is the silvertop. they go fine turbod, with lower comp pistons.
if you can afford it, a blacktop with silvertop rods would be good. or rebuild a silvertop with blacktop pistons and head.
for a racer you would be better off with the silvertop rods

[Drifter4ag]

those stats are a load of tripe

[Mr Revhead]

that about sums them up

[Lamphant]

so i guess that the blue and redtop engines are jus "economy" 4age's so to speak then

[Alex B]

why do you say that? They are just older technolody...

[Lamphant]

older technology? they were the first 4age series? explain dis a lil further cause i kinda "lost"

[CozmoNz]

they were...

but the non tvis redtop makes 100kw, which is what most 20v blacktops are making... some technology aye

que redmist, whats that word again? Hem who?

[RedMist]

*enter stage left*
Actually the small port has little to do with Helmholtz. It's to do with flow and velocity. The smaller the port the larger the velocity, the more fuel stays in suspension. But that's been covered a million times before.

My pick has always been the 16 valve non tvis redtop for power and a good span of torque, however its all application dependant. Bigports may be better for power at 10k RPM. Blacktop perhaps turbo?

Saying the above I'm hoping to get good power from my new Blacktop, surpassing my smallport.

[Drifter4ag]

anyone done back to back head swap with turbo app ?
ie big to small port .. dyno each way ?

[crnkin]

matt thats what im looking at doing, cept with a p+p smallport (stock valves rarara) and a stock bluetop, the P+p is gonna be fairly simple, similar to clints. Is a wee way off tho, either late this year or early next, if any difference i expect the bluetop to go higher, but im hoping money spent will come through on the day