This goes with that.

[dale30]

I know its probably covered here somewhere but i coudnt find it. I did find which oil pump to use..

Building 2 4AGE's for speedway
1 small port
1 big port

These engines must be standard including computer.

So im assuming that theres all different cams and bits and pieces that can be mixed and matched from different models ( blue top black top silver top etc: ) to gain some advantage over the others.
Seca runs 121hp at 7500 at the wheels but is a bit slow of the mark from about 3000

Also we run in 2nd gear so which box has the tallest 2nd gear.

[mattysshop]

when you say they must be standard...

honestly i would use a smallport motor.. they don't seem to have the bottom end the bigports do (odley enough!) BUT.. the proven reliablilty of the internals (bigger bigends and small ends of the rods), the inlet manifold is much better, higher compression pistons..

i personally havn't done a direct back to back comparison.. but in theory the bigport cams give a few more kw's than the smallport cams.. the bigport cams have 7.56mm lift & 240 duration (advertised), and the smallport cams have 7.1mm & 232 duration.. they have slightly different opening/closing times also..


for gearbox - you COULD use a C52 from a GT starlet.. they have a slightly taller diff ratio... the Starlet turbo boys love using 4AGE C52/56/160's as they just shift through what seems like a 'close ratio' box.. so using that principal.. doing it the other way around.. you can give yourself a few extra legs in each gear, but it might not seem to accelerate AS quick..

i think they said that it's about 700rpm difference at 110km/h..

all you need to do is swap the bellhousings over.. with the rolla > starlet conversion there are a few holes to tap threads into.. obviously you won't need to do this..

hope that helps you

[oldeskewltoy]

These engines must be standard including computer.

Porting allowed?

[mattysshop]

the smallport ECU has a lower rev limiter in it than a JDM bigport also.. i think the ecu you want for the bigport the part number ends in 50, 51 is the common one we get here.. in a lot of the AE82 twinky's.. the 50 ecu has a limiter of 8100 or 8200.. i had one in my AE86 levin i imported a few years ago.. and we ran it in a mates AE82 twincam (stock bigport) after the 'learning' it then took off past 8k all day no worries..

don't worry if the ecu can or can't run it.. you will be suprised.. i was running a stock AE82 twinky loom & ecu, on a rebuilt and tickled up smallport, with 20V tps & quad throttles.. no cold start injector.. and the map sensor barley had a vac signal.. honestly.. although a little on the rich side on cruise.. it went just fine..

as seen here..

http://www.youtube.com/watch?v=gkZnY...eature=channel

[dale30]

Porting allowed?

Unfortunatly no porting

Have to use the bigport cause thats what i got.

[dale30]

the smallport ECU has a lower rev limiter in it than a JDM bigport also.. i think the ecu you want for the bigport the part number ends in 50, 51 is the common one we get here.. in a lot of the AE82 twinky's.. the 50 ecu has a limiter of 8100 or 8200.. i had one in my AE86 levin i imported a few years ago.. and we ran it in a mates AE82 twincam (stock bigport) after the 'learning' it then took off past 8k all day no worries..

don't worry if the ecu can or can't run it.. you will be suprised.. i was running a stock AE82 twinky loom & ecu, on a rebuilt and tickled up smallport, with 20V tps & quad throttles.. no cold start injector.. and the map sensor barley had a vac signal.. honestly.. although a little on the rich side on cruise.. it went just fine..

as seen here..

http://www.youtube.com/watch?v=gkZnY...eature=channel

whats a JDM bigport

[GEMTA22]

You mentioned the Seca runs 121hp at 7500 at the wheels.

Can you list the mods done please ?

[dale30]

when you say they must be standard...

hope that helps you

The rules say everything must be standard, doesnt say which version of age so as long as all bits are genuine toyota parts ...all should be well.

Im putting the bigport into an XT130. will go smallport when the wreckers that sponsors us gets one in.waited 12 months for this ae82 to come in.

So if i get what you was saying..i should use the computer from the ae82 in the 100kw seca.?

[dale30]

You mentioned the Seca runs 121hp at 7500 at the wheels.

Can you list the mods done please ?

Is that to much????

It is supposed to be stock..just had rebuild so will be bored and good valve job...

[mattysshop]

JDM bigport = Japanese Domestic Market, bigport..

try and locate an ecu for a bigport with the last 2 digits on the part number 50.. that is a JDM ecu for some reason they have a slightly higher limiter..

that with the slightly different ratio in the box.. should have you pulling a bit extra speed in the gears

you can plug this ECU straight into an AE82 loom no worries (NOT the one with pink injectors and the air temp sensor in the air box, the slightly earlier version, think they have cream/beige injectors and no air temp sensor)

i have swappped both the 50 ecu and an ordinary AE82 twinky ecu over with eachother.. and oddley you can notice a slight top end difference.. for the most part they run the same.. but the 50 ecu lets it rev out a bit more

the JDM 50 ecu has an extra wire going to it, which is a speed sensor from the JDM car, in my case it was my Jap AE86 i brought in.. the Aussie ecu did not have this.. it didn't cause the car to run any different only that my little ding ding speed chime didn't work anymore.. probly a good thing anyway..

one thing we didn't test was if the 180 speed limiter was still there in the JDM ecu equipped AE82.. it was DEFINITLY present in the AE86.. i am pretty confident it would be there though... the AE82 has no speed sensor input..

hope that makes sense

[mattysshop]

it's just that the 100kw motor seems to be more reliable at constant high RPM applications.. the bigport bottom end (speaking about the early 3 rib designs in the ae82's) can be thrashed also.. but i've seen them fail quickley when constantly pushed at high RPM (drifting in 2nd & 3rd gears holding it at 7500-7800rpm for the whole length of the circut!) where as the smallport, with it's beefier rods, better crank, better oil system altogether (drain and pumping) seemed to survive anything i threw at it!