Engine haha, by august (hopefully) i will be 7aGe!!

y not just start with a 20valve engine?

haha, by august (hopefully) i will be 7aGe!!

Well, my dad and i will be converting my engine to a 7AGE. I am buying another 7AFE block from junkyard for approx 400. Then buying the parts needed from a 4AGE to convert it. Im hoping to do a 20V blacktop head conversion. That will allow me for 9000 redline with new rods and pistons of course. The only problem is the crankshaft. Im hoping i can use a 4AGE crank, if not then i have to have custom made. But i hear the 20V conversion is harder, so i might go with the redtop conversion. That will be 7500 redline. I will have approx 150hp with high comp pistons. Since id go redtop head, i could have possible 160 torque. Those are figures im hoping for from redtop if i do it. The figures for 20V, well i have no clue. Im assuming around same but lil better.

If anyone knows someone that has done this conversion let me know, i would like to talk to them, get a few questions answered. Iv been researching club4age and such.

Total cost to do all this, im estimating 3500, thats with my dad and i building, and having toyotal specialist place install.

can't use a 4age crank in a 7afe shortblock..... the problem with using a 20V head is that you'll have to use the 20V ecu if you want the vvt to work.....

read this about just a standared 4a-ge swap.... and using a modified 4afe ecu (so i have very very minimal wiring..... if you plan to use a GE ecu then plan on a long wiring job) http://www.cardomain.com/memberpage/219038/9

then, go to club4ag and go to the tech reference section and find 7age.... that should help you a bit..

also, if you want to keep power steering, you're going to need the pump, brackets, and lines from an ae92 gts (or from a 1/2 cut if you use a 1/2 cut)..... and the alt needs a bracket made to fit, or you'll need a 4a-ge alt.....

So to use the 20V head, i would need the 20V pistons of course, and the ecu of the blacktop for it to work properly correct? With the VVTI that is. Are there any other things that prevent or give me more problems then using a 16V head? Iv looked at research things people have done for this conversion, but either its older corolla they did it to, i cant find someone that has done it to a 93/97. Pic of the engine bay would help out a lot. To see what got moved around in process.

9000 redline on a 7a block!?!


sounds waaaaay too high, isn't the bore in the 7a a lot bigger than in a 4a?

actually he's right.... even a bluetop 4age with a limiter at 7200 rpm's still makes power up to 8,000 rpm's..... a smallport can go higher (and mine is limited at 7800 rpm's), and the 20V can go a bit higher (8,000 rev limited) and the blacktop, yet higher.... mind you, the rev limiter is there for a reason, but the 4age is known for being able to withstand higher amount of revving

if you want to make the 7a block rev that high, make sure a windage tray from a 4age will fit between the block and the oil pan.... that's half the secret of a 4a-ge's high revving.....

I would probably do reving to 8000, i doubt id go 9k. I mean the tach in the car now goes to 8000. and im sure power starts to drop after 8 anyways. Only thing im worried about is the ecu stuff. I mean how much you think the person installing would charge to have to redo the wiring harness in the car for the 20V ecu? also, anyone know where to find a 4AGE-20 Blacktop head at?

just using a 20v sounds better.. . just bore over... get some high comp pistons, and cams and you should be set.. . balancing the crank is a good idea too... making sure all the pistons are too will help in your redline reachin limits...

As far as i know you can take it up to about 9000. The bill s. guy in his project, his dyno went to 8000 and stopped. But he said he was gonna hope to go to 9000 in it.

I would have more performance gain doing the 7AGE, its more work yes. But i will have the low end torque of the 7AFE body, and the high end power of the 4AGE-20V.

fortunately for you the head is non interfering so you don't have to worry too much about the 5 valves per cyl killing your pistons if you have the right crank and rods in there..

My dad and i will be doing the work. He has rebuilt engines and does work. Now its been on harleys and older muscle cars like. But it will be a project for him and i to do. I figure about 5000 dollars should cover all the parts and hopefully cover labor for them to drop it in and wire it up, LoL.

Cause i will have .2 displacement more, and i will have more torque from the 7A block. And if done right will have better hp to.

hate to say it..... this should be done by someone who does their own work..... nobody in their right mind as a shop will build a 7age using a 20V head..... buy some books, take some things apart and do it yourself....