Boost on 3.8

[Kamkaze]

Non gdi I am not sure if anyone has turboed the gdi 3.8 in a coupe yet but they do have a tuning solution.

 

[Philth]

GDI is a completely different world.

 

[Kamkaze]

I understand that, But they are already tuning them with very good results so I'd imagine it won't be long before they are adding turbos and tuning them as well. Are all Genesis Sedan 3.8's gdi or are the earlier ones different?

Just went and did some more looking around, apparently there are several 3.8 GDI turbod coupes in Korea, and both Btr and SFR said they can tune for it. Also Turnokits.com is working on a turbo kit for the GDI 3.8 coupe, their non GDI kit has made some great numbers.

 

[Potty_Pants]

(just me)

I have complete confidence in stock Hyundai engines... however absolutely none in aftermarket boosted Hyundai engines.

I want reliability and fear there would be little with an aftermarket boosted Hyundai engine or how the trans holds up.

ppp

 

[Kamkaze]

Like I said the 3.8's in the coupes are doing very well when built right.

 

[Top Gear]

I've thought about this a good bit since I got my Coupe last year. Some guys are even doing twin-turbos on the 3.8 Coupes, but at that point, you're deciding it's not a daily driver anymore, it has no warranty, it will be broken down sometimes, it will smoke, it will never be "perfect", someone will always be faster. Why? Because these engines are already engineered to the Nth degree. If you want a race car for the circuit or shows, or just have money to burn for showing off, then go for it, but if this is your only car, wake up

The Coupe R-Spec/Track 3.8 engine has more robust computer settings and a more aggressive CAI and exhaust, not to mention being mounted in a far lighter and better balanced car than the Sedan with better suspension, brakes and tires - it's a sports car. The stock engine block will take FI up to a point, the point when we should have bought a faster car to start with, speaking generally. Better to have one designed for it from the start, and that means a full rebuild.

So what? On a good day I can pull 4.6 sec 0-60, easily cruise past 160 into the rev-limiter, take corners as fast and smoothly and safely as any regular production car, and flash the curb appeal of a Supercar. What else is there, in a world of fast cops and slow minivan freakouts?? If I wanted to race for real on the track, well that's a whole different dimension of money pit

 

[StangKiller]

4.6 seconds 0-60? That's impressive if your car is stock. I'd like to see evidence of this.

 

[Philth]

Sounds like Edmunds tested it at 5.3 sec for the R-Spec coupe.

 

[Top Gear]

Yep. Posted test times vary, as do the models, and drivers. The Edmunds video is particularly slow. Nevertheless, it comes down to power, weight, transmission, traction, fuel, air temperature, and practice - the same evidence you would use. Believe me or don't. It's not my problem.

The point is that boost is wholly unnecessary on a 3.8 R-Spec/Track Coupe for nearly all real-world situations (but it would be cool!). The Sedan is another matter, though. You're carrying some 1,100 more pounds with a slightly detuned engine (by comparison). The weight balance and traction is not as good, and the slushy transmission costs you a few tenths. So, if you want to take on even a 3.8 Coupe, not to mention much faster cars, you've got a lot of work to do besides bolting on a boost kit.

 

[StangKiller]

Yep. Posted test times vary, as do the models, and drivers. The Edmunds video is particularly slow. Nevertheless, it comes down to power, weight, transmission, traction, fuel, air temperature, and practice - the same evidence you would use. Believe me or don't. It's not my problem.

The point is that boost is wholly unnecessary on a 3.8 R-Spec/Track Coupe for nearly all real-world situations (but it would be cool!). The Sedan is another matter, though. You're carrying some 1,100 more pounds with a slightly detuned engine (by comparison). The weight balance and traction is not as good, and the slushy transmission costs you a few tenths. So, if you want to take on even a 3.8 Coupe, not to mention much faster cars, you've got a lot of work to do besides bolting on a boost kit.

That's funny - def calling you out as I don't believe the coupes can run anywhere near 4.6 seconds stock with any driver in perfect conditions. I have made quick work of a couple different coupes with the 3.8 - wasn't even close...

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[Potty_Pants]

I would be interested in seeing 4.6 0-60 with the coupe 3.8.

the coupe weighs around 3500lbs unless I'm mistaken.

my bmw was 3500-3600lbs w/ 3.0 TT with 300/300 German horses it was every bit of a 5 second car stock.


ppp

p.s. best times I could find... 2013 Hyundai Genesis Coupe 3.8 R-Spec 0-60 mph 5.0 Quarter Mile 13.5

 

[Philth]

LOL

http://youtu.be/LRSYV3cA3V0


Neither car (sedan or coupe) is "fast", Top Gear.

 

[StangKiller]

Curb weight of the coupe is 3433-3563 lbs. for the manual and 3483-3613 lbs for the automatic. Curb weight for the rspec sedan is 4,046 - 4,154 lbs. That's a difference of 591-613 lbs if we compare the manual coupe to the rpsec sedan, not 1100 lbs. Op obviously doesn't know what he is talking about.

 

[Potty_Pants]

Bottom line truth be told prob closer to 5.6.......

 

[Top Gear]

I hate feeding the trolls, even on this site, but the 2012 3.8 R-Spec Coupe weighs 3200 pounds and has horsepower well over the 307 rating. These specs were generally not published by Hyundai. If you knew about the Coupes, you'd know that. It's old news. Even stock, at "307" HP, my car would do 4.8 or .9 all day long, but mine is not exactly stock.

Focus instead on your own specs instead of trolling me. Your 4-door family truckster weighs at least 4200 pounds, so that's a 30% increase over mine, and it does not have the balance or traction to match mine. How is your 3.8 going to cope? Even the celebrated 5.0 V8 R-Spec would need 40 more horses over the stock 429 to beat a 3.8 R-Spec like mine, especially when the road turns, or after we get to 60, but even at 0-60. If you're not in the 5.0 R-Spec, it's simply no contest.

Disagree? Fine. Take on a 3.8 Coupe like mine where you are and see what happens. The sedan is a great luxury car, but it's not a great sports car.

 

[Philth]

Your coupe is not fast. And let me be clear, the sedans are not as well. I don't care what "underrated" horsepower it has.

 

[1FstYota]

How the hell you get 3200 from? Its spec says 3492 plus an average 200lb driver thats close to 3700.

A corvette c7 weights 3300 thats with fibrglass body panels etc...

 

[Philth]

And let me clarify, a mid 13 second car is not fast by any means.

 

[scottdk]

And let me clarify, a mid 13 second car is not fast by any means.

+1

 

[StangKiller]

I hate feeding the trolls, even on this site, but the 2012 3.8 R-Spec Coupe weighs 3200 pounds and has horsepower well over the 307 rating. These specs were generally not published by Hyundai. If you knew about the Coupes, you'd know that. It's old news. Even stock, at "307" HP, my car would do 4.8 or .9 all day long, but mine is not exactly stock.

Focus instead on your own specs instead of trolling me. Your 4-door family truckster weighs at least 4200 pounds, so that's a 30% increase over mine, and it does not have the balance or traction to match mine. How is your 3.8 going to cope? Even the celebrated 5.0 V8 R-Spec would need 40 more horses over the stock 429 to beat a 3.8 R-Spec like mine, especially when the road turns, or after we get to 60, but even at 0-60. If you're not in the 5.0 R-Spec, it's simply no contest.

Disagree? Fine. Take on a 3.8 Coupe like mine where you are and see what happens. The sedan is a great luxury car, but it's not a great sports car.

Wrong again- curb weight is posted on Hyundai's website - you should check it out. The difference is 14.6% (600/4100), not 30%. It's amusing that you are still arguing this point when the specs are published by Hyundai.

Also, there is a difference between trolling and calling out b.s. Take your car to the track and show me the slip and I will gladly concede the point. Btw the 5.0 pulls much harder than the 3.8 in the coupe, especially after 60.

And I would gladly put my 450hp "family truckster" up against your coupe any time.