1HZ + Turbo + A/W Intercooler

[Gun Runner 5]

x2.

Toyota engines seem to have a sweet spot of sorts between 2,000 rpm and 2,600 rpm, particularly six-cylinder ones. That range is also soft on fuel consumption.








Juan

I'm far more interested in longevity than speed.

 

[77cruiser77]

The Coquihalla is a notorious highway with several very long steep hills. within 30 miles you'll gain over 4000'. The speed limit is 75mph. This highway is one of many like it in western Canada and this one in particular has written off a number of Prados. I cruise around 60 mph keeping the rpms low but before turbo on this hill 60-70kph (mph?) was my max speed. Now if I did it I could manage 60 mph but without an intercooler I'd be watching my temps real close

My HJ61 did it no problem in 5th the whole way mind you

 

[JuanJ]

I'm far more interested in longevity than speed.

Hello Charles,

I agree.

A well treated engine will last longer, extra horses and all.

As for speed, owning a Cruiser is driving in the slow lane. Rosco/@roscoFJ73 summarized it best: patience and the right gear.







Juan

 

[Gun Runner 5]

The Coquihalla is a notorious highway with several very long steep hills. within 30 miles you'll gain over 4000'. The speed limit is 75mph. This highway is one of many like it in western Canada and this one in particular has written off a number of Prados. I cruise around 60 mph keeping the rpms low but before turbo on this hill 60-70kph (mph?) was my max speed. Now if I did it I could manage 60 mph but without an intercooler I'd be watching my temps real close

My HJ61 did it no problem in 5th the whole way mind you

For me high water temperature would be the limiting factor more so than high EGT's. On some of the longer inclines I would see water temps. approaching 210°.

 

[MountNGoat]

@1978HJ45, please provide some more details on the specific model intercooler, heat exchangers, and custom radiator that you are running!

 

[Gun Runner 5]

I received a number of emails / PM's requesting additional information on the components (including part numbers) that were used for my turbo / Intercooler installation. Most of the components were highly modified by Rob Smith to suit my application and are unique to my 77 Series (taking into consideration the amount of room in my engine bay as well as my refusal to consider a hood scoop). Since all of Rob's turbo installations are "custom built" and do not utilize outside kits, the components that worked in my application would probably only be suitable for a 77 Series with A/C and an ARB brush bar.