Going Forced Induction
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You are currently reading a thread in /o/ - Auto
In about a week I will be getting a supercharger for my 5.7L manual Challenger, should be about 500whp up from ~320. Anyone have a "relearning" period on their car after a decent power bump, avoiding wheel slippage and such? As it stands now when it rains pretty much touching the gas when taking off will cause minor slipping (summer tires), I am guessing that will persist through all the gears with boost.
>>14082782
theres a reason DD's don't tend to have 500 hp, just fyi. you'll have to be super gentle on the throttle.
also, summer tires should normally be better than all-seasons in rain
>>14082819
If you remap the throttle vs speed in the ECU it can remain very streetable, just make sure the tune is solid
twin screw or centrifugal?
>>14082906
Twin screw.
dodge a shit
>>14083147
Challenger is based aesthetically stfu
>>14082782
Sell your current Challenger and get a Hellcat instead
>>14083123
Just leave traction control on until you get more familiar with it, When i single turboed my FD on rcomp tires i pretty much had to stay out of boost in the rain until i got pretty comfortable with letting it slip somewhat. If you're really concerned consider putting a bigger pulley on as a sort of stepping stone.
>supercharging
>not sleeving and stroking to 7.2
s m h t b h
>>14082782
I think that you may find 500hp to be particularly underwhelming in a car of its size.
You are going to have to upgrade the rear end if you want to push it any further. You are only going to do 8 lbs of boost right? Unless you forge the internals the max I would go is 8 lbs
>>14083154
>pigfat
>>14083626
Yeah after 8 pounds it becomes a very large money pit.
>>14083948
>>14083626
ha! a stock 3800 can take over 20 pounds of boost
>>14083123
Go with a roots or you're shit
>>14087106
If Mad Max was real I would.
it's not going to spin that much. its heavy as fuck.
>>14082782
>Chrome Rimz
Confirmed boomer
>>14087412
>boomers
>on 4chan
>>14082782
Nice car, anon. I would've gotten the 5.7 premium edition but couldn't justify the price and got a mustank instead
>>14087412
It's what comes with the 20" wheel option from the factory. I would prefer black but I don't prefer it by over $1k it would take to replace them.
>>14087463
Just get some steelies from a charger, should go nicely with the supercharger whine
>>14087476
Best looking rims I've seen on a modern Charger so far.
>>14087476
Damn that's sexy.
>>14087489
I dunno man, matte gold Viper style wheels look dank.
>>14087501
Too niggy for me
>>14087476
May I ask the name of these rims?
>>14083626
The rear end in the Challenger is very similar in design to the old 8 3/4 offered in the 50s-70s albeit stronger and more advanced. A rear end replacement wont be necessary until he puts on some tall drag slicks and does a hard launch. 500hp is nothing for an 8.75, same plays true here.
Factory internals can take 8 psi with no major consequences if you tune it correctly. I suggest a new cam with a grind that will take advantage of the boost. One thing most people forget when dealing with new OHV engines is that what worked for 60s V8s will work even better on a new one.
Pic unrelated
>>14087529
Just police steelies
>>14087529
standart steel wheels from the cop spec Charger. Shouldn't be to hard to find or expensive.
I wonder what they look like on a 300
>>14087512
>too niggy
Only the color, otherwise I have to disagree
>>14087547
Probably like shit, they don't fit in with the design unless it was a black one and even then its a stretch
>>14087530
Hurst 300. Aww yeah
>>14087476
The cop chargers use 18" wheels, mine are 20" or I would.
>>14087620
That's fine, actually going to the cop wheels would be a benefit as it would include a larger sidewall giving an even better ride. Also, your tire options open up a bit and gibes you a more muscular look.
>>14087030
It's a smaller engine so of course the pressure will be higher
>>14087620
Do it faggot
Do it but don't go too high on the boost. 500 is a lot more fun than 300, pic related 6.4L
>>14082782
What supercharger? Twin screw, Roots or centrifugal?
Also, why not keep it n/a masterrace, and get a 426 stroker kit?
>>14087106
>same boost curve
>better efficiency
>more power
Roots a shit. Unless you want a blow sticking out of the hood, but in that case two twinscrew blowers might still be better.
>>14083192
>not 426ci masterrace
>>14083626
>>14083948
http://www.hotrod.com/how-to/engine/hrdp-1106-turbocharged-hemi-engine/
Stock 5.7's can take 10.4 PSI without problems. Gap the top piston ring a bit more, and add race gas (or more cheaper E85), as in
http://www.hotrod.com/how-to/engine/hrdp-1109-stock-gm-ls-engine-big-bang-theory/
You might get up to 14.5psi/bar. Careful tuning will yield ever more.
>>14087620
As long as the bolt pattern matches (and iirc it should), and you clear your brakes (which you most likely will) you can still use the 18's. Gotta find a creative way to get rid of the 20's though.
>>14082782
What you'll want to learn is where to buy new half axles and a differential.
>ex SRT owner who broke both stock
>>14087972
From a turbo yes, power comes on a bit differently with a S/C and boost is not equivalent between the two.
>>14088003
Boost is boost - and the strain on the rotating assembly doesn't come down low anyways, it's up top where failures are more likely to happen.
Besides, from what I'm reading ITT, the engine won't be the problem, the drivetrain will.
>>14088015
Yes up high is where the most power is to be made, but torque is what shreds trannys and rear ends. I know it all too well.
>>14088015
Except supercharger intake temps are always much higher than turbos, you can melt the pistons if you're not careful by running it too hard, don't even need to bend a rod.
>>14082782
Not really, there's a day or 2 until you're used to the new power but then you're pretty much good.
If you're not upgrading the clutch, be careful with your changes that you don't slip and burn it up.
>>14088015
Superchargers don't have turbine backpressure, so 1lb of superboost is going to do more than 1lb of turboboost. Turbos just make that much more boost when they get going.
>>14088047
>supercharger intake temps are always much higher than turbos
Unless you use an intercooler or meth injection, which you should for reliability's sake.
>you can melt the pistons
Open up the rings a bit, make sure your intake temps are low, and a 5.7 should hold 14 PSI.
>>14088049
The backpressure is only going to make those extra PSI of boost less effective, the engine should still hold the same amount of boost. Power output may be different, sure - the supercharger will make less because of the crank drive, unless you size your turbine way too small, and the backpressure becomes exccessive.
>>14083635
>pigfat
BAKA senpai DESU
>>14088026
How do you tell what level of torque is too much for your car? I'm wondering about long term damage when tuning my mustang.
>>14088462
There is no real set level as all rear end components have slight differences in metal build quality and finishing. The rule of thumb is drive it until it breaks, then replace it with something stronger. Example: When I hit 600 HP and 630 lb ft with the Plymouth, I grenaded an 8.75 rear with a fully aftermarket spool and gears after 30 passes. The first rear end lasted about 150 passes, 50 at that power. So now I have a Strange S60 because it is more than double the strength. I suggest beefing up your 9" or swap a Dana 60 in and it will not break.
