Hi everyone!
I’ll try to keep it short. I have NA Manual Supra. It needs to go turbo. I have two complete Soarers which I can use as a donor car. One is a 1jz non-VVTi auto and the other is a 1jz VVTi r154 manual. I’ll be keeping the r154 regardless of which engine I use. My aim is to have the car around 600bhp in the not too distant future.
My question is quite simply; which engine should I use?
Reliability, aftermarket support for big power, ease of conversion, ECU options and VVTi mapping and cost are all factors which I'm having to consider.
Things to note:
• I’ll be putting in the engine with a friend but will be looking to get the wiring done elsewhere.
• I don’t know where I can take the car to get the VVTi wiring sorted.
• I’ll be keeping the R154 and A02b diff, which means if I use the non VVTi engine I’ll have to get rid of 2 non-running cars.
• Mileage is considerably lower on the non VVTi.
• Initial cost of putting in the VVTi would be bit lower overall (I think) as the non-VVTi Soarer can be sold as a full running car.
I really love the way the VVTi drives at stock power levels and this was my engine of choice. This only changed as I found out the wiring is more difficult to do and there’s not much information available on that. Also, it seems people get big power more easily with the non-VVTi and big power VVTi builds are significantly less common and less well documented.
I’d really appreciate any help, especially from those who have experienced the associated problems with these conversions before. I’ve been looking for information online for quite some time now however I can’t find anything that is solid or recent.
Many thanks!