Toyota 22R Engine conversion

Rovohn

Rovohn

Member
Just wondering,has anyone put a Toyota 22R and 5speed box in a 4cyl P6?
being on the west coast of Canada P6 parts are somewhat hard to come by as are mechanics who are familiar with Rover’s eccentricities.
The 22r is a great little engine and parts are really plentiful and cheap and it’s got a 5 speed as well
Cheers,John
 
The engine bay is pretty spacious, but the transmission tunnel is quite tight. The auto box trans tunnel is wider. Other than that I don’t see a problem.
 
So you want to swap a 1950s designed 2.0 producing around 100bhp, for a 1970s designed 2.4 producing around 109bhp?

Sounds like a lot of work for very little reward
 
chrisw said:
So you want to swap a 1950s designed 2.0 producing around 100bhp, for a 1970s designed 2.4 producing around 109bhp?

Sounds like a lot of work for very little reward
Click to expand...
The reward is cheap to find parts and easy to work on,as I said there are few people in Vancouver who even know what these cars are,let alone have the knowledge to work on them.
The horsepower is irrelevant it’s not a race car,I just want affordable reliability
John
 
Go for it if you have the parts and your Rover engine is knackered. And let us hear and see photos of it.
regards, Barten
 
If you are willing to go that far there are MANY usable engine/gearbox combos available. Miata 1.8 with a turbo and 5speed comes to mind.If you keep the boost under 10psi they are nearly bullet proof - have one in the thing below, at 8psi it gives 215hp AT THE WHEELS, rev limited at 7200. Engine never opened. Done a couple of track days , no issues, approaching 100kkms. Easiest would be engine from a Miata SP (factory turbo fitted), but dont know if they ever reached US. Drawback is intercooler too small. Many of the great current engines are only east-west designed, so that cuts them out .
7mMJ9E3.jpg
 
The 22r is a very old engine choice. If parts availability is important and your not doing the work yourself i'd be looking at a more recent engine. A carb engine swap would physically be easier but tuning it to the car won't be as the carbs are setup to meet emission requirements in the vehicle they came in and most parameters can't be changed. ie. youd need a new carb as well (and tuning) which kinda defeats the purpose to some extent. Don't be afraid of injection it's actually simpler than a carb in most ways and far more easily tuned. Somewhere on here there are engine swaps of the kind you are after. They will give you an idea of the extent of the work and likely problems. Note that variations in an engines stroke for the same capacity affects such things as low down torque and particularly pickup. They are both important to the cars drivability in traffic and what gear ratios you use. Finally, make sure your engine choice is easy to work on IN the car ie you can get to things like the oil filter and spark plugs without dismantling everything around them.
 
It might be easier and cheaper to do a fuel injection conversion on a TC motor.

I like the idea of a six speed Miata manual gearbox though.
 
I like 6 speeds as well (have 2 - subaru turbo, Mazda3), but the miata 6 speed is bigger than the 5 speed, may not fit easily.
 
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