Speed Force Racing Smart car turbo system

[sandalscout]

Originally Posted by HerrZ

i didnt ask where the computer is.

No, but SmartJoeMN who's quoted in that reply asked about them.

Looks like a cool system, the only concern I'd have is how long it will hold up due to this engine being a fairly high compression ratio compared to fctory turbo engines, but I suspect that it'll actually be okay.

[SergMadness]

Originally Posted by geosynch

OK, I confess I find myself getting more and more interested here. For me a turbo would come after a body kit, which has been on hold since early this year (the toy money has temporarily dried up). But, planning is half the fun. I have questions…
geosynch

1. Turbo is usually much quieter than a comparable naturally aspirated car making more hp....in fact given the choice you can usaully fly under the radar with a boosted car with a large exhaust vs the same exhaust without the turbo.....the turbo itself muffles ALOT of noise and the Dodge SRT-4 actually doesn't have a muffler because it has a turbo...true story lol

2. As you become more involved with cars you will probably learn enough to start taking the system off yourself and probably put it all back in by yourself....but its a pain...I feel you

3. Nitrous vs Turbo....if your a speed junkie and you want to feel the burst of power often the turbo will be much cheaper over the years.....if you only use the burst at the strip....nitrous is cheaper but limited...turbos build power smoothly whereas nitrous is a bit more of a shock. In small amounts nitrous is super safe...but it has its pitfalls....bottle refills, pressure drops, running purge lines, finding the right direct port system or limiting it to a small dry shot etc...

Given how stout these little engine seem to be the turbo route seems like a no brainer....

Bottle refills vary by area but you can spend a couple hundred a month in refills if you get silly....or maybe only $50-70 a month for one bottle a month...but say its $100 ---- in three years youll have almost spent what a turbo kit costs and the turbo kit would still be fine for quite a while longer and its ALL THE TIME.

So while nitrous certainly has its place...for street cars looking for more all around performance turbos make a lot of sense.

You can enjoy all your power all the time....not just in spurts

[SpeedForceRacing]

Originally Posted by HerrZ

thanks!.. of course.. the cost for a turnkey system?

The stage 1 kit retails for $3499 and the install time is about 8 hours.The stage 2 system retails for $3999 and the install is about 10 hours. So.......... depending on how much you pay for labor, you would be into it for anywhere from $4 to $5K! But the boost in performance is well.................simple incredible!

[SpeedForceRacing]

Originally Posted by sandalscout

No, but SmartJoeMN who's quoted in that reply asked about them.

Looks like a cool system, the only concern I'd have is how long it will hold up due to this engine being a fairly high compression ratio compared to fctory turbo engines, but I suspect that it'll actually be okay.

The best thing I can say is that time will tell the story. But I can say this much, a couple cars have seen 23psi of boost and havent skipped a beat.The car in the video is runnng 15+psi on pump gas and stock engine for quite sometime with no issues! We have 10k miles on our test car with no issues. And the car is constantly boosted running between 9-10 psi.Actually, it is hard not to boost this car with the turbo on it because the power is very usable, especially in a car that is way underpowered to begin with! LOL

[Gearhead]

A swap-out of the turbo system for the stock exhaust would be quick. As I had commented elsewhere, the performance fuel injectors and piggyback ECU can probably be left in place for smogging as they would have no effect without boost and you couldn't tell anything from a visual inspection. As for smogging every two years, if you have an '09 Smart in CA -- you won't need to worry about this until 2014/2015. For many people, they probably would have moved on to a newer car by then!

[Mike T]

Originally Posted by sandalscout

..the only concern I'd have is how long it will hold up due to this engine being a fairly high compression ratio compared to factory turbo engines, but I suspect that it'll actually be okay.

Well in the case of the European smart 451 naturally aspirated engine, the CR is over 11:1. In the European 84 and 98 HP Turbo applications, the CR is reduced to 10:1, which happens to be exactly what the stock USA/CDN 451 comes with.

[sandalscout]

Originally Posted by Mike T

Well in the case of the European smart 451 naturally aspirated engine, the CR is over 11:1. In the European 84 and 98 HP Turbo applications, the CR is reduced to 10:1, which happens to be exactly what the stock USA/CDN 451 comes with.

Thanks for that, didn't realize the CR was the same for the turbo versions. I assume that the CR was reduced in the US versions due to less strict fuel requirements in the US versus Asia and Europe. I know that's fairly common practice. Most US model Mitsubishi turbo engines that I'm familiar with are in the 7.8-9.0 CR range.

Does the 3B2 have oil squirters?

[geosynch]

Originally Posted by SergMadness

2. As you become more involved with cars you will probably learn enough to start taking the system off yourself and probably put it all back in by yourself....but its a pain...

Thanks for your response. I used to enjoy working on my cars, motorcycles and bicycles. But as I've gotten older and grumpier, money became easier to come by than time.

Turbo lust will linger for a while. I'll probably give in some time in the next 12 or so months.

Best,

geosynch

[Periclaws]

Originally Posted by SergMadness

New tune with slightly more aggressive maps (with huge payoff lol)

A little ignition advance goes a long way

So how would this be delivered to the customer,do you flash the piggyback computer?

[erkinak]

Nice setup! any dyno charts ?