Golberg
23rd June 2008, 09:18 PM
I've put my guide on a couple of other sites but I'm sure it'll be appreciated here too.
I spent quite some time gathering bit and pieces of 4A-C and 4A-GE cooling systems. I currently have a complete water system(apart from radiator) for an AE71 4A-C, AE93 4A-GE, and a JDM AE86 4A-GE and part of an AE82 4A-GE system.
The aim of this guide is to show the similarities and difference between each of the systems and to give tips about what can be used in different configurations.
Alternator Bracket:
There are 2 main different types of alternator bracket for the 4A-GE the FWD one bolts on at the bottom of the block and sits the alternator relatively high. And adjuster strap is mounted to the front water outlet from the head. The RWD one on the other hand bolts to the same place but sits the alternator lower and has an adjuster strap mount on itself. It also has one extra bolt, sitting on top of the RWD engine mount. Why does this matter? You cannot run a RWD water pump and rear housing without it, otherwise the inlet will be blocked by the alternator.
http://i260.photobucket.com/albums/ii10/Mighty_Duckster/4A-GE%20Water%20Guide/alt_bracket.jpg
Harmonic Balancer:
RWD Harmonic Balancers are different to the FWD AE92 version. The inner part of the pulley has a greater diameter on the RWD version. What this means it that the alternator will more than likely be pulled closer to the block on a RWD engine but I can confirm that the standard AE92 4AGE harmonic balancer works just fine with the RWD alternator bracket and strap.
I have just acquired an AE86 one so I will take some comparison shots when I take my AE92 one off.
I spent quite some time gathering bit and pieces of 4A-C and 4A-GE cooling systems. I currently have a complete water system(apart from radiator) for an AE71 4A-C, AE93 4A-GE, and a JDM AE86 4A-GE and part of an AE82 4A-GE system.
The aim of this guide is to show the similarities and difference between each of the systems and to give tips about what can be used in different configurations.
Alternator Bracket:
There are 2 main different types of alternator bracket for the 4A-GE the FWD one bolts on at the bottom of the block and sits the alternator relatively high. And adjuster strap is mounted to the front water outlet from the head. The RWD one on the other hand bolts to the same place but sits the alternator lower and has an adjuster strap mount on itself. It also has one extra bolt, sitting on top of the RWD engine mount. Why does this matter? You cannot run a RWD water pump and rear housing without it, otherwise the inlet will be blocked by the alternator.
http://i260.photobucket.com/albums/ii10/Mighty_Duckster/4A-GE%20Water%20Guide/alt_bracket.jpg
Harmonic Balancer:
RWD Harmonic Balancers are different to the FWD AE92 version. The inner part of the pulley has a greater diameter on the RWD version. What this means it that the alternator will more than likely be pulled closer to the block on a RWD engine but I can confirm that the standard AE92 4AGE harmonic balancer works just fine with the RWD alternator bracket and strap.
I have just acquired an AE86 one so I will take some comparison shots when I take my AE92 one off.