automatic ka24de-T ??

[GatorS14]

whats up everyone? I can post ! ive been trying to since the old board.

Do any of you have automatic ka turbos, i heard the stock auto/transmission is good up to like 400hp(please correct me if im wrong) but before i purchase a turbo kit can anyone tell me what else i will need?(maybe transmission cooler?)im probly going to go with the nsport unless greddy decides they wanna make money.

[Good240]

I think you would be alright if you took all the normal precautions of installing and running a turbo kit along with an additional transmission cooler. I never heard about the auto's power holding but the manuals are usually listed right around 400HP/Ft.LBS torque.

I've seen several Turbo SR20DEs inside of auto S13s/S14s but I'm confident the Turbo KA is very compatible and reliable with the auto 4spd.

[Anand]

just a thought but why would you put a turbo in an automatic??? That just doesn't sound right...sorry..don't mean to offend you or anything

[RWDnot RICE]

well wouldn't a turbo plus an auto mean no lag..?i mean i have ridden in a volvo turbo that was an auto and there was very little lag since the auto shifts so fast.i will be putting a turbo on my car eventually after i graduate and i don't plan to get rid of my auto. besides if i want to have drag race someone or something, i can just take off the over drive and go, that thing shifts much faster than i ever could and without missing!

[QUICKFLOW240]

I had an auto and looked into turbocharging it, but I was told that you can't boost more than 6 psi and it would still damage the transmission.

[RWDnot RICE]

told by who..?

[QUICKFLOW240]

http://www.turbokits.com

[Sil14]

I hv a 1998 240sx auto...i am planning to put a turbo on it too....and i also worry about the transmission....so does anyone know it's limits?

[numatik]

I'm thinking of going turbo on my KA auto as well. I think there is a transmssion cooler already built in. I'm hoping it will hold to around 300rwhp.

[Zebrahead]

A turbo lags because the engine is slow to supply exhaust gasses to spin the turbine at low RPMs, it has NOTHING to do with the transmission. Stock turbos are typically pretty small on most cars, so there is very little lag. Bigger turbo's have bigger turbines that take my exhaust to get spinning, so power doesnt' kick in until higher RPMs.

Some cars have two turbos, a small one for lower RPMs that disengages and allows the bigger turbo to kick in for the REAL power. I'm sure setups like that are way out of normal people's reach, price-wise.

Nick.

[Good240]

The lag of the turbo might be covered up by the delay of and auto downshift but when in low you'll feel lag like the manual cars. At least you should.

[CurlyStooge]

A turbo lags because the engine is slow to supply exhaust gasses to spin the turbine at low RPMs, it has NOTHING to do with the transmission. Stock turbos are typically pretty small on most cars, so there is very little lag. Bigger turbo's have bigger turbines that take my exhaust to get spinning, so power doesnt' kick in until higher RPMs.

Some cars have two turbos, a small one for lower RPMs that disengages and allows the bigger turbo to kick in for the REAL power. I'm sure setups like that are way out of normal people's reach, price-wise.

Nick.

I hate to be an ***, but your wrong. I'm not too up to date on my Nissan knowledge, but Im confident on my turbo knowledge. The reason turboed autos are faster than turboed manuals is because when you shift a manual, you have to take your foot off the pedal, which lowers the amount of exhaust gasses, which drops the psi majorly. Watch the boost gauge of a turbo manual, youll see it drop significantly, then go watch the boost gauge of an auto, it will still drop while shifting, but not nearly as bad. So your wrong, it has quite a bit to do with the transmission. (lets not forget the very obvious gearing). I wouldn't say that the auto would be any faster than the manual, but it would definately make up for the lag of an auto while its torque converter is winding up. This is in very plain english and should be quite obvious to anyone.

[numatik]

preach on brother!thats what I like to hear

[S13Drifter]

THis guy has an auto 240sx KA24DET and has only added a heavy duty transmission cooler.

http://www.importcargarage.com...X.htm

BTW Some were else he said that his car ran 12.4 at the 1/4 with only 320hp and i have seen higher HP KA manuals run slower.

[CurlyStooge]

THis guy has an auto 240sx KA24DET and has only added a heavy duty transmission cooler.

http://www.importcargarage.com...X.htm

BTW Some were else he said that his car ran 12.4 at the 1/4 with only 320hp and i have seen higher HP KA manuals run slower.

maybe i should keep my auto then and not swap it out, hmmmmm. I'll probably turbo it first now, and see what happens, then if it isnt want im hoping for, ill put in a manual and see where that goes.

[Jeff240sx]

I have a turbo auto s14. I am running 4.35psi, untill my new spring comes in. Auto's don't reduce turbo lag at all, infact, by having 4 gears, I drop out of boost rpms during the 1-2 shift. And don't tell me that you can brake boost at the light. My tires break at 2300rpm. Turbo doesn't even START spooling until 3k. I have sticky z-rated rubber, and fresh pads and rotors in the rear, so that doesn't have anything to do with it anyway. Also, my blow off valve blows during the auto shifts, because the engine is no longer working, and cannot use the air it is being fed, so it backs up, and out the bov. It doesn't make a diff, besides having 1 less gear, between auto and manual. That is why I will have a manual by December.Stop posting Misinformation, because someone else will believe you. If you don't like what I am saying, IM me at Sleek S14. I'll get back with you if I am in class.-Jeff

[CurlyStooge]

yes, and I'm sure you arent using a high stall torque converter and I'll bet you'r still using paperthin wheels. If you break traction at 2500rpm then you'r either using papercutters or really ****ty tires. Do you have an LSD? You'r bov could also be ****ed up, there are ****ed up BOVs that leak. I've been in multiple (not 240s, but it's still an auto car) automatic turbo cars and when you push them and theyre in proper working condition, the BOV doesn't sing til you let off. Please don't post misinformation, other people may beleive you.

[Jeff240sx]

Are the cars you were in stock turbo, or aftermarket? Because there is a huge difference in the BOV that will be used. Even VG30ET motors come with a pop-off valve, that doesn't sing. But anyway. And how many people, right now, have a high-stall torque converter in their 240sx? You're an *** man. These are people that are going to slap a turbo onto an auto car, and you and others are saying with the same setup, the auto will be faster. NO! It will always get stomped by a better geared 5speed. Untill you get a couple thousand dollar rebuild from Level10 or someone. But why? Just get a manual.Think before you type.-Jeff

[S13Drifter]

Are the cars you were in stock turbo, or aftermarket? Because there is a huge difference in the BOV that will be used. Even VG30ET motors come with a pop-off valve, that doesn't sing. But anyway. And how many people, right now, have a high-stall torque converter in their 240sx? You're an *** man. These are people that are going to slap a turbo onto an auto car, and you and others are saying with the same setup, the auto will be faster. NO! It will always get stomped by a better geared 5speed. Untill you get a couple thousand dollar rebuild from Level10 or someone. But why? Just get a manual.Think before you type.-Jeff

I know a few people on these boards that have high-stall torque converter in their 240sx. I have never seen a race to race auto vs manual with same step up. But I would think that if i guy in an auto and a guy in a manual did a race with the same turbo car other than auto and manual the guy in the auto would win more times. Why, the difference that the speed the auto and manual would be made up becuase of mistakes of the driver in the manual. I have seen many many times guy's in the slower car win because of driver error. With an auto you wouldn't screw up as much and prabably win more time's becuase the cars would be about the same speed. And Jeff why do you have to be an *** we all say what we think, i know most people don't give other a hard time when they make a mistake. You want to flame, go the the Ring.

[Turboinit]

i have a 98 240sx thats been turbo'd at 6spi with an auto transmission. the place i had it installed (force fed industries in oh) reccomended a transmission cooler and a high stall torque converter if i wanted to raise the psi with those the transmission could handle 400hp. I agree with s13drifter the automatic would probley be more consistent than a manual transmission unless you can always shift perfectly

[CurlyStooge]

Are the cars you were in stock turbo, or aftermarket? Because there is a huge difference in the BOV that will be used. Even VG30ET motors come with a pop-off valve, that doesn't sing. But anyway. And how many people, right now, have a high-stall torque converter in their 240sx? You're an *** man. These are people that are going to slap a turbo onto an auto car, and you and others are saying with the same setup, the auto will be faster. NO! It will always get stomped by a better geared 5speed. Untill you get a couple thousand dollar rebuild from Level10 or someone. But why? Just get a manual.Think before you type.-Jeff

your pathetic. You need to refer to yourself as an ***. Even stock auto cars are faster that stock manuals when turboed. Ask 99% of supra owners or 300zx owners, theyll admit it. Before and after mods, the autos are faster, until you get an enormous turbo with major lag that has to be launched, in which case youd need a nice clutch to handle the launches, which would cost about the same as a high stall torque converter. The only exception is AWD cars. Don't be stupid.

[UnderPressure]

enough of that ****. on to the important stuff. . . 1)chicks dont dig autos2)you lose total control of the engine with an auto3)it would be ALOT harder to drift with an auto. . . no clutch4)anyone can drive your car when your drunk @ a party. . . dont let cheerleaders drive turbo cars!

[Emperor240]

man yall hostile as hell on this subject. i have a '90 240SX stick and i love the fact that its a stick. its true that an auto is more consistant with its shifts, but if you are a real racer (not drag racer) you like sticks better. the reason i say this is becuase you can controle your speed better in a stick around turns (if you know how to drive a stick), if you only want to drag a auto is better if you set it properly because you cant miss a gear and you dont loose power flow. the only disadvantage to autos is that the nissan autos (in the new cars) weigh like 100lbs more than the manuals. turbo lag is the time it takes a turbo to initially spool, so an auto and a stick with the same turbo will have the same initial turbo lag, and if the person in the stick nows how to power shift, they can keep some of the boost going. but any rate dont **** your car up doin nothin. keep it real

[Emperor240]

by the way my mods are comming soon (how soon as soon as i can get the money), but i do know what im going to do to the car.

[boke_as_hell]

I asked JWT the same question and they told me to check out level ten. I think their website is http://www.levelten.com

[2s4x0]

One Question. Why do hardcore drag racers use auto's.........? No need for me to answer you all should know.

[npaulseth]

A turbo lags because the engine is slow to supply exhaust gasses to spin the turbine at low RPMs, it has NOTHING to do with the transmission. Stock turbos are typically pretty small on most cars, so there is very little lag. Bigger turbo's have bigger turbines that take my exhaust to get spinning, so power doesnt' kick in until higher RPMs.

Some cars have two turbos, a small one for lower RPMs that disengages and allows the bigger turbo to kick in for the REAL power. I'm sure setups like that are way out of normal people's reach, price-wise.

Nick.

Show me an example of a setup like this.

[guyaverage]

1993-up Rx7's.

[Red-KAT]

Just get a transbrake you will be good...

[WDRacing]

Enough bickering about why not to turbocharge an auto...anyone who says you can't is ignorant, anyone whos says a manual is faster is ignorant. The only reason I can think of where a manual is preferred would be road course or drifting. Auto's are better for drag and better for daily driving depending on traffic. This a thread about how to turbocharge an auto and what would be required. The thread says nothing at all about giving your opinion on why a manual is better. Stay on topic for christs sakes.

The KA24 transmission is the same as the Skyline GTS-t which I have personally seen go over 400whp.

If you don't want lag use the proper size turbo...nuff said there. If you want to run a bigger turbo for more power then upgrade you stall converter.

Please keep your unproven opinions and theories to yourself.

For those who think that a manual is best, ask Ivan what transmission is going into his car...

WD