4A-GE red top in 6G ST HAtch Options

[teal_terrorGT]

Ok so today I went out and bought me a red 94 st 5 speed with a blown motor. And while I was at it I got a 4AGE redtop with it for 275 out of a prism GSI ...anyone did the swap before and how is the wiring.


I have a set of cams for it and a lightened flywheel.

so give me the scoop please

[blueskycelica]

I am in the process of doing the same head swap. There is a ton of info on the 7-age engine all over the place. I am getting new hks cams, new pistons, rings, 4-age ECU, valves, and new bearings. From everything I know about the 7-age it's supposed to be a very good high rev engine with better torque than the 4-age because of the bigger block. I should be done within about 8 months I hope(pending money situations). Let me know how yours turns out.

[soulshadow]

I am in the process of doing the same head swap. There is a ton of info on the 7-age engine all over the place. I am getting new hks cams, new pistons, rings, 4-age ECU, valves, and new bearings. From everything I know about the 7-age it's supposed to be a very good high rev engine with better torque than the 4-age because of the bigger block. I should be done within about 8 months I hope(pending money situations). Let me know how yours turns out.

Actually the block wont be able to withstand constant long high revs such as the 1.6L block because of oil issues, but it does produce more power in the long run.

[Kwanza26]

Actually the block wont be able to withstand constant long high revs such as the 1.6L block because of oil issues, but it does produce more power in the long run.

It's not so much the oil issue (this isn't a Honda motor) as it is the wimpy 7A rods. It's that whole oversquared undersquared motor thing I go on about when people talk about building 5SGE's... look it up... ;]

To swap a redtop... I'm gonna assume you mean smallport? You need the full engine harness, the ecu, all of the attached sensors, some detached ignition parts, and a lot of know-how in regards to wiring. Basically, you find diagrams for both and mesh the 4AG engine harness into the Celica body harness. Could be pretty easy or a nightmare depending on how different the engine harness is... but don't ask me... I don't do wiring.

whats the redline on the 4age 20v?? the 7afe is 6200

i rev to 7500 (redline is 8000) with boost with no problems but my bottom end is balanced with beefer rods and pistons

20V stock redline is 7800 with 8200 fuelcut on the silvertop and I think 8000 on the blacktop.