7afe vs 4age

[no_8wire]

Aslo what cars came out with teh 7afe? just the 1.8 93+ corollas?

[no_8wire]

A pic of the lovely 7agte...

[no_8wire]

More info from the same people as before...
http://www.turbofast.com.au/mr2.html
The Engine Block: 7AF-E 1800cc fitted with oil cooled pistons.
Cylinder Head: 4AG-E20 20 valve head
Pistons: 4AG-ZE Supercharged.
Conrods: ARGO Custom rods with 3/8" ARP bolts.
Crankshaft: Standard 7AF-E
Compression Ratio: 8.9:1
Boost pressure: 18 lb
Power: 300hp at 7000 rpm
Turbocharger: Garrett GT25 twin ball bearing, 290HP model.
Intercooler: Water to air using a separate radiator to cool the intercooler coolant.



The engine fitted into the AW11 MR2 without any problems.

Only major problem assembling the engine was the timing belt. We used the 20v belt and had to reduce the cam belt idler pulley diameter by 4mm and lengthen the adjustment slot. The timing cover had to be modified so the idler pulley would not touch. The crankshaft timing belt pulley had a new keyway cut, to correct the cam timing which was out due to the belt length and the 14mm higher deck height of the 7A block.

Intercooler coolant radiator is from a Suzuki 4WD and is mounted under the gearbox at a angle of 15% to direct air into it from under the car.

Fuel injection is Autronic Smc sequential, replacing the original ECU, the injectors are from the Turbo Sport Celica

Boost starts at 1000 rpm, maximum boost is achieved at 2700 rpm. The engine pulls strong from 1500 rpm to 3200 rpm, and from 3200 rpm to 7400 rpm. hang on.


think thats enough info to insprie you guys?

[Mr Revhead]

thats a pretty high $$$ one though.

7afe also came in caldina and carina

[no_8wire]

I dont see how you could get it down any cheaper.
You need aftermarket ecu, rods, and turbo? Guess it is a expensive turbo though

[vvega]

the last caldena one is the one to have
apprently there differnt

v

[no_8wire]

different as in better/stronger?

[Mr Revhead]

yeah 2 versions of the 7afe, i havnt looked to the differences between them.

no8, theres many combos you can use, that one has had some $$$ thrown at it. not counting ecus i reckon you can have a 7age tunning for only a coupla grand. 7afe short blocks are under $500. the other 4age parts are cheap and easy to get.... the more i think about it the more i think i should do it!

[no_8wire]

That equals two of us...
Think about it...no need to stuff around with mounts...use the 4age loom with the new ecu...

this is looking good!

[ezy10s]

Come on Rev come to the dark side- you love it

[Bazda]

hmm
I have vvegas old engine.
I changed the rods to some custom H beam ones.
Running the 8.0:1 pistons in this engine brings the comp ratio to 7.6:1, so I have to skim about 0.3mm off the deck to bring it to 8.0:1 using a blacktop head and 0.5mm trd metal gasket.

cambelt is a standard bluetop one, using a 16v head then you would have to use a porsche 944 belt.

If someonegives me the volume of the 16v chamber I can work out the comp ratio quite easily when putting a 16v head on a 7afe.

[vvega]

arrhhhh my baby

and look here is its swirl pot

v

[Bazda]

woohoo its done

[vvega]

lol if i was cheese i would be the really aged stuff
good things take time

v

[no_8wire]

So are the 7afe rods any different to the 4age ones? or is it the crank that is different?

[Bazda]

its the crank thats the bgi difference

[Truenotch]

I think it's the crank thats the only difference as far as measurments go? 4age rods and pistons are just stronger and higher comp.

[vvega]

rods are longer
block is taller

[Truenotch]

I stand corrected....

All hail the wise and knowlidgable vvega

[matt dunn]

Do they have the same big end bearing size?