7agze to 7agte?

[the boffin]

Want to get more from my ae86 7agze.
Engine spec as present, hopefully about 220bhp+, wanting advise if I can change to turbo easily, what size T3 or other? What power am i looking at getting? Will 4agze ecu setup be adequate?
Dave

7agze
1800cc 7afe block 1996 celica st overbored & decked
Oil cooler pistons jets machined in
Arias 81.5mm oversized forged pistons
Pauter forged rods w/oil feed to small end
Arp bolts
Argo race bearings (machined for oil feed)
Argo HV oil pump
4age big port head polished & ported
HKS 1.0mm steel head gasket
NA inlet manifold
Celica GT 55mm throtthle body
Blitz sus air filter
Supra 1ggze/previa sc14 1435cc supercharger w/sc12 125mm small pulley fitted
HKS adjust cam gears
Porsche 924/944 1986 117x19mm timing belt
AE92 4agze dli & ecu
PFC HKS f-con & gcc
HKS super header 2 s/s 4-2-1 manifold & super drager exhaust
Samco sport silsicon hoses
Earls s/s braided fuel & oil lines
HKS intercooler
MOCAL 13row oil cooler
Walbro 255lph fuel pump
custom 50/60mm s/s tig welded pipe work
Fensport oversized pulley kit
HKS vac mod
HKS ssqv recirculating dump valve
FSE adj fuel press regulator w/guage
Koyo racing alloy rad & twin 10" PACET fans w/thermostat
Cusco puke tank
alloy water pump pulley

[Uzelac]

What CR are you runing at the moment ?

I'm not really an expret, but going from supercharger to turbo isn't really a problem. T3 or something in it's class is way to go.

[the boffin]

What do mean by CR?

[irishtwincam]

compression ratio

You should dyno car as is so you've got before and after figures.

[the boffin]

Must try fine out cr unless someone knows, 7a block with
Arias 81.5mm oversized forged turbo pistons
and 4age big port head.

Lad that built engine wkd said he doesn't recommend rolling roads as the stress is never the same as the load on the open road. Seen too many expire after a session.

[Sam-Q]

I can work out that compression ratio if you quote me what the CR is meant to be when installing in a 4A bottom end. What do Arias state?

also what do you mean by rolling roads?

[Jimmi The Kid]

Thats alot of work, when a stock 4A-GZE or a 20v with GZE pistions easely put out 500hp with a T70 china turbo. Have even seen one with 680hp and only modifications are a portet head and all internalls unless the cams, are OEM Toyota parts.

[robokill]

CR needs to be known. To give an example,

standard bluetop engine ha 10.4 standard gze late model 8.9. So if you have "turbo"pistons its probable between 8.5 and 9.5 calculated with a 1mm head gasket.

Remember that a compressor can run trough the entire power band while a turbo won't do a thing at low or very high RPM. Hows your rear end holding up with that amount of torque? And what about the gearbox still t50 or do you have an upgrade?

With more power you will need to have those covered as well.

I would toss away the standard ignition system and the HKS fcon and go full management like MS/Omex or anything nicely programmable.


Apart from everything looks like a solid little engine you got there