Can you swap 1.8L Gen-3 engine to a Gen-2 (2008) prius?

I rather just rebuild a wreck vehicle than do a disimilar engine swap . The 1.8 l has several engineering improvements that include electric water pump, redesign cold air/egr flow, different throttle body sensor design, and etc

 

going to need a different transmission mating too.............. aka ecvt

 

Swapping in a Prius C engine would be a lot more practical. Probably the same power, but makes sense if the original engine has to be replaced.

 

Why not just bore the cylinders out and use the 1.8 pistons and use a cam shaft with increased duration and velocity stacks then spend 1000's of hours trying to tune it properly. lol No but seriously this would probably be easier than swapping engines, and would produce more power for less money.

 

just like this guy did to his echo. maximizing the VE (volumetric efficiency) of your engine will be the best way to get more power from it.

 

Oooh ITBs - Bet that would be fun! Doubt the Atkinson cycle would like it tho. Maybe after the Cams and Cam gear swap - switching the Prius over from Atkinson to Otto Cycle but keeping the Prius pistons and a set of ITBs.....Bet the MPGs would drop significantly - but wheeeeeeeeee.... more HP!

 

What that video can't give is the whooshing sound those velocity stacks make when the throttle's opened. Ever since we did a through-the-hood intake on our Neon, I've found a new respect for the four-banger.

This is a dangerous game we're playing. At some point we're going to overdo what the CVT can handle... at which point we have no upgrade option. This is why I'm hesitant to get into any game of incremental increases with this car.

I think the best place to focus is handling: maybe a quicker steering ratio, better brakes and most of all, suspension. An independent rear suspension upgrade would be the cat's pajamas.

The car is peppy enough with the torque of the electric motors, just put a lid on the squashy handling and it'd be a much more fun car to drive. If you want HP, you gotta look elsewhere. This car isn't designed to handle HP.

 

it is essentially the same engine as the echo and yaris isnt it? the guy above is running mega squirt fuel injection on that thing the results of doing that and running this engine at 100% efficiency without a turbo would still be fuel efficient and fast. The cvt transmission would handle plus you would have unlimited gear ratios with it and if not, maybe some company out there will make stronger belts.

 

No Prius has a CVT, they have a PSD which emulates a CVT. No belts, no clutch, it never changes gears.

Toyota Prius - Power Split Device

 

So despite all the mounting issues and physical clearance (which might be surmountable with substantial fabrication skills), I'd say the largest problem is still getting the ECUs to talk to each other and coordinate the whole hybrid system correctly.

Individual throttle bodies probably wouldn't buy you a lot on a Prius, since the increased engine response is useless when you have the electric motor providing essentially instant response.

 

but don't our engines have reversion issues in the sense that burnt mixture is being sucked back into the intake and re burnt would it not be beneficial from a performance point of view and not a emissions point of view to increase VE and have the exhaust designed to suck out more burnt mixture rather than re burning it. Tuning your exhaust intake and cam timing would do this wouldn't it?

To be honest I am very new to performance tuning and don't know very much but this is my understanding. I would never modify my Prius but I would like to know if Prius's could be tuned to compete in an auto cross?

 

Check out the SCCA Solo II FSP prius. Also, there's a guy who shows up to Chicagoland autocross events and turns in extremely reasonable times in a Honda Insight.

 

oh that is too awesome... He should not have such wide tires in the rear of the car though, the contact patch is going to be the same regardless of what width you put on the car.

Heard this before?
"Only air pressure and weight (tire load) dictate contact patch size. Tire width has nothing to do with it. If you double the width of a tire you cut the length of the contact patch in half. You get the same contact patch **area** either way. This is described by the following equation reasonably accurately (maybe within a 5-10% error range?):
tire_pressure = weight / contact_patch_area
Therefore:
contact_patch_area = weight / tire_pressure
Fact or Fiction? Tire contact patch and air pressure.

 

Did you get your degree in automotive engineering from Google? They're not the best school for this kinda work. Might I recommend the University of DIY?

 

I am aware that 30% of the unburned mixture is pumped back into the intake, I am unaware that burned mixture is inherently pumped into the intake. EGR does so, but in a Prius mostly when not under load.

 

I base my decisions on the experience of professionals that do the guess work for me.

 

it would have to be pumped back into the intake in order to be re burned wouldn't it?

 

A wide but short patch will handle better, a narrower, longer patch will accelerate and brake better. The rear of any car has little braking effect, the Prius is FWD, so no accelerating with rear wheels.

 

On general, your car's exhaust is under pressure, since it is still expanding, while your car's intake is a partial vacuum, since it is behind the throttle plate, which is restricting air.
So no pump is needed for small amounts of EGR.

 

I am talking about valve overlap sorry so. I see that EGR recirculates some exhaust gas but what I want to know is would increasing valve overlap give the Prius better top end power?

when the piston is passing TDC (top dead center) on the exhaust stroke, both the intake and exhaust valves are open. Valve overlap increases the efficiency of the engine operation by allowing the low pressure caused by the exhaust gases leaving the cylinder to help the fresh charge of fuel-air mixture in the induction system to start moving into the engine.

Read more: http://www.answers.com/topic/valve-overlap#ixzz2M3Kylao0