Hello again,
I am here again to share with you all my 1.5JZ Build into my S14. I previously shared my original 1JZ swap into the S14. I decided to make this specific thread about this swap for future reference of other members.
At any rate, to get everyone up to speed as to where I am now, here is the link for the original 1JZ swap:
http://zilvia.net/f/chat/376821-s14-1jz-build.html
With the JZ swap becoming more and more prevalent into the S-Chassis such combination of the 2JZ and the 1JZ are inevitable. Originally, the notion that the 1JZ Head flowed better than the 2JZ head, thus many people decided to combine the two: 1JZ Head, 2JZ Bottom End...
However, the 1JZ Head, which was flow tested, actually flows ~20cfm less than the 2JZ Head. The only other difference is in that of air velocities, with the 1JZ Head at a higher velocity.
1JZ: 2.5 Liter
2JZ: 3.0 Liter
Bore of the engines is exactly the same. The 2JZ gains the extra displacement through a slightly longer stroke, thus making the block slightly taller.
For those of you who did not read my 1JZ build thread; My engine developed rod bearing clearance issues due to detonation. I explored just rebuilding the 1J, however, I would have spent quite a bit of finances on new 1J pistons/rods, irregardless of detonation damage.
My final choice was to purchase a Used 2JZGTE, pull the head off the 2J and put my 1J head on there and party. This option allows me to re-cooperate the money spent on the engine by re-selling the 2J Head, Intake, Turbos, ECU, Wiring Harness, AC Compressor, Water Pump, Cams, Etc. This option seemed the quickest way to have my S14 driving again and the most economical.
Other big factors include:
- 1J Head has HKS 264 cams
- Converted wiring harness into my S14 adapted to 1JZ
- Single Turbo setup/Fuel Rail/Injectors
The documentation:
After running my finger through the 1J's oil. X__X
#1 Cylinder Rod Cap removed.
1J Ready to be removed.
Wiring harness removed, ready to be torn down.
2J Shows up.
Very clean engine, was previously mated to an automatic transmission.
Hahahahah
Friend who was apart of the engine shipping asked me after I received my engine if I got my "surprise." I was confused; a few days later I go to clean up the shrink wrap the engine was covered with when I discovered this Flesh Light. Thanks Mike Pollard xD. Hahaha.
2J Head/Turbos removed.
I will forever be amazed at how people convert these engines to a single turbo setup with the engine still in the car.
1J Head, the cams must be removed for head removal. Plenty of documentation is available through the FSM on how to go about this. Very straight-forward.
Detonation damage on the pistons is hardly noticeable. This is a good sign as I plan on building this engine on the side when time/funds permit.
I will be switching the water pipe that snakes around the engine to the 2J Block.
Garage with all the JZ love.
I will continue to update this thread. I will now switch my focus to the 2J and preparing it for maintenance parts and the 1J Head/Single turbo conversion.
- Gates Timing Belt
- New 2J Timing Belt idler pulley
- Front/Rear Main Seals
- Timing Belt Guide
- ARP Head Studs
- OEM Toyota 2JZ Head Gasket
- OEM Toyota 2JZ Oil Pump
- I will transfer the 2J Water pump, timing belt tensioner, and alternator, water pump, and power steering pullies over to the 2J.
That's all for now,
Alex