- Joined
- Mar 23, 2006
- Messages
- 1,147
- Points
- 1,663
Hi guys,
I think this question has been asked quite a lot of times already and still seems a little bit unclear about top overhaul or full overhaul for 4AGE 20V.
Basically, I was told that top overhaul is top overhaul which means removing the head only (engine still attached to the car) and working on the head only. Most workshop also provide top overhaul + piston ring changes without actually dropping out the engine, not forgetting grind valve. Apparently, they'll just pop out the oil pan and remove pistons, conrods, bearing and etc from the block to change piston ring while the block is still in the engine bay.
As for full overhaul, they basically drop out the engine and replace every single thing in the engine which are worn out and "best replaced". Only necessary if piston is damaged and requires reboring onto the block, or engine is seriously terrible condition. A compression check will roughly tell if you need a full overhaul or just a top overhaul.
So seeing that my engine is consuming quite a bit of engine oil and also spitting out white smoke (noticeable via my rear view mirror) so I guess its time for overhaul. So, hoping that my pistons are "ok" and also no problem with the block, the best way for me is top overhaul with piston ring changed. FYI, I've already tried changing to "engine kosong" before which costs about RM1.3k for the engine alone.
So I called up and meet up a few guys/foremans and they quoted me about RM1100+1300 for the job including workmanship and parts as well (with TRD 0.8mm metal gasket). Some workshop also included new conrod, bearings and polished intake/exhaust ports for the same cost. Some only provide workmanship whereas the parts must be provided by customers.
Basically this is the rough rundown for 20V BT (all using original OEM parts unless specified):
Workmanship + Grindvalve: RM350-500
Top set: RM200-230
TRD 0.8mm Metal head gasket: RM250-280
Conrod, main bearing, engine bearing: RM150-200
Polishing inlet/exhaust ports: RM200
Time required: 2-4 days
So the reason for this topic is to hear from you guys about this and also doing an overhaul guide for our beloved 20V engines. If you guys have experienced with better pricing and service, please do not hesitate to post it here. Workshop owners/runners can also post your pricing here for reference.
Update: Toyota 4AGE 20V (or any other Toyota) Parts Reference (http://www.toyodiy.com/parts/)
I think this question has been asked quite a lot of times already and still seems a little bit unclear about top overhaul or full overhaul for 4AGE 20V.
Basically, I was told that top overhaul is top overhaul which means removing the head only (engine still attached to the car) and working on the head only. Most workshop also provide top overhaul + piston ring changes without actually dropping out the engine, not forgetting grind valve. Apparently, they'll just pop out the oil pan and remove pistons, conrods, bearing and etc from the block to change piston ring while the block is still in the engine bay.
As for full overhaul, they basically drop out the engine and replace every single thing in the engine which are worn out and "best replaced". Only necessary if piston is damaged and requires reboring onto the block, or engine is seriously terrible condition. A compression check will roughly tell if you need a full overhaul or just a top overhaul.
So seeing that my engine is consuming quite a bit of engine oil and also spitting out white smoke (noticeable via my rear view mirror) so I guess its time for overhaul. So, hoping that my pistons are "ok" and also no problem with the block, the best way for me is top overhaul with piston ring changed. FYI, I've already tried changing to "engine kosong" before which costs about RM1.3k for the engine alone.
So I called up and meet up a few guys/foremans and they quoted me about RM1100+1300 for the job including workmanship and parts as well (with TRD 0.8mm metal gasket). Some workshop also included new conrod, bearings and polished intake/exhaust ports for the same cost. Some only provide workmanship whereas the parts must be provided by customers.
Basically this is the rough rundown for 20V BT (all using original OEM parts unless specified):
Workmanship + Grindvalve: RM350-500
Top set: RM200-230
TRD 0.8mm Metal head gasket: RM250-280
Conrod, main bearing, engine bearing: RM150-200
Polishing inlet/exhaust ports: RM200
Time required: 2-4 days
So the reason for this topic is to hear from you guys about this and also doing an overhaul guide for our beloved 20V engines. If you guys have experienced with better pricing and service, please do not hesitate to post it here. Workshop owners/runners can also post your pricing here for reference.
Update: Toyota 4AGE 20V (or any other Toyota) Parts Reference (http://www.toyodiy.com/parts/)
Last edited: