4age 20v – Cooling conversion UPGRADE – V1/V2 to V4 – UPGRADE KIT ONLY

Description

4age 20v – Cooling conversion upgrade kit – V1/V2 to V4 – Upgrade kit only

For those who have either of our previous model cooling kits (V1 or V2) and wish to change to the latest version. This is not a full cooling conversion kit, it is only an upgrade from older models, to purchase our full 20V RWD cooling kit see here.

 

This upgrade kit is supplied with all the components of the new kit as seen here with the exception of the components for the rear bypass plate and the side block off plate next to the extractor flange.

 

Features and advantages

– Ease of fitment: This kit is very easy and quick to install on the engine using only basic tools. No custom modifications are required and no unpleasant surprises.

– Full bypass type cooling system: Helps to remove air locks and is intended to avoid any internal hot spots as well as also helping to stabilise the operating temperature.

– Original water flow: Despite many misconceptions all of our kits have always used the same water flow path of the cooling part of the engine as used from original.

– No external water pipes: Some rear wheel drive conversions use pipes extending all the way from the back of the engine to the radiator to transfer the water. These bulky, leak prone, more difficult to maintain and are prone to leave difficult to remove air-locks.

– Common thermostat: Pre-fitted inside the thermostat housing is the same type as fitted to 16V 4age engines and only genuine Toyota thermostats are used.

– Suits original hoses: Using the supplied parts in the kit the factory fitted AE86 / AE71 radiator and heater hoses are able to be directly used. For other models it’s able to be easily adapted.

– Water pump / alternator compatibility: Suits the original 20V water pump and the alternator / bracket from any model of 4age 20V.

 

Supplied parts

– Main thermostat housing: Assembled with the water inlet pipe, silicone joiner hoses and a genuine Toyota thermostat + seal fitted internally.

– Top water outlet.

– Top extension hose.

– Lower hose support.

– Various clamps and other components.

 

 

Parts options

– Heater use: This kit is available with the option of a heater provision. NOTE: A heater option can only be used when there is an existing barb / plug in the rear bypass plate. The heater compatible kit features a barb for the water feed outlet in the rear bypass housing, a return feed in the thermostat housing, a rubber joiner hose to the original heater pipe and the relevant clamps. These parts completely clear the OEM knock sensor which is critical for the use of the original ECU.

– Custom options: For those who require a different size heater water feed or something different such as a turbo water feed then please make a note in the “comments” box that can be seen during the checkout and then send an email with the relevant request. Many different size barbs are kept in stock.

 

 

Installation guide

Click to view the guide on how to install this kit.