i am currently looking for an automatic car with a good ammount of tq like the 2.4 liter that can be turboed with no problem. i have a celica right now that cant be turboed due to its vvtl-i causing misfires and back fires and a huge power loss in hiogh rpms. so i need a car that i can tune easily and boost easily, is this a good choice?

 

Right now, no.

Later down the road. Yes.

Give about a year before full support is available afterwords.

 

How about the G35???????

 

well the deal isnt gonna go thru like i wanted or else i would get the g35 but they want 550 a month for that car which is way more than i wqanna spend 400 is my max since i want money left over to turbo the car i get.

 

just get a used audi A4 1.8t they are not that much they are auto thay are turbo and they have AWD

 

so, right now there is no turbo kit that will fit it? i was thinking the 2.2 kit would fit but i guess not

 

sorry i dont like audi's

 

Sabb

 

Get a couple year old S4 with the 2.7 TT and you would be ready to go. I was about 5 min away from getting one but it was just a little to expensive at the time. But the amount of after market parts for it is insane. Goapr.com

 

so, does anyone know if this vvt will make this engine hard to turbo?

 

it should not look at all the turbo hondas with vtec

 

A turbo kit designed to fit the 2.2 WILL fit. Same exhaust port configuration on the head, same exhaust. Additionally the 2.4s rod to stroke ratio would be better suited to boosting than the 2.2 even, as the rod is shorter (and forged steel- the 2.2 is only powdered metal).
Only issue might be the higher compression ratio (10.4) that might limit boost levels somewhat, but it's still not so bad.A decent intercooler will help. And dont let anyone scare you with the fact that the piston "is only" of the hypereutectic variety- thats all the LSJ is using as well and it seems pretty good! The only concern would be getting the correct tune.
WHO'S GOING TO BE THE FIRST TURBO 2.4 VVT???!!!
WopOnTour

 

I'm going supercharged 230-250 stock

 

10.4 is very high comp to be great with boost. its not impossible but harder to tune and more chance of the big bang effect. hypercraptectic pistons are junk... they are full of silicon to prolong life and for environmental control reasons. knowing first hand how weak these pistons are. i would be very scared to run boost over 9 #. but i think that 6-7# would be assuming u have a good tune and very reserved timming any knock and kabooom at high rpm/boost

 

The 2.0 LSJ in the supercharged SS is 9.5:1 with hypereutectic pistons- seems to work well enough for IT -even at 16-18psi! It's all in the execution. And btw the silicate concentration has NOTHING to do with environmental issues!- OMG
WopOnTour

 

hypercraptectic pistons when used as they were intended to be, hyper pistons provide excellent trouble free performance while aiding in reduced emissions numbers. Unless the intended use involves high compression / big NOS / high boost or sustained high RPM, opting for forged pistons is a waste of the extra dollars spent. In the hands of a careless driver that does not pay attention to oil changes or is perhaps prone to getting on it a bit before the engines properly warmed up, forged pistons will usually wear out / fail long before a hyper one would. It has to do with how tight they are able to fit a hyper piston as opposed the wide clearances needed for a forged unit.

Hyper pistons have a high silicone content to aid in the casting process, it sure doesn't help with durability though. If you do a cross section of a hyper piston you will often find silicone pockets, basically looks like swiss cheese

i've worked in a mustang performance shop for a couple years i'm sure the quality of the mustang pistons is much lower, and a mustang piston is much larger which adds to its weakness.

that being said, i'm saying running 6-8psi is safe, run more if u'd like i've seen guys run 12psi on stock mustang motors, some fail, some don't.

i've never seen or worked on a 2.0 compared to a 2.4. everything i state even the emissions statement was correct so go and OMG yourself.

and 10.4 : 1 is very high for a boosted ap, has anyone boosted a 2.4 VVT motor cause the 2.0 doesn't have VVT does it???

WopOnTour what are you laughing about? have you ever boosted a 2.4? what mechanical back ground do you have?

 

well i do feel kinda dumb now thinking that the vvt would be bad for boosting since , 1: the twin turbo supra has vvt and its one of the best engines around. 2: all the honda turbo fine with v-tec so i have nothing to woory about, but i dont really understand this piston thing you guys are talking about, i need to make sure because i will be buying the car this week

 

the 2.4 is the only vvt motor in the cobalts

and the vvt that is used is variable cam timing , not a change in valve lift like vtec


it is alot harder to boost a the vvt motor , because of the cam changes arent as predicable , like the change to vtec is

it is possible , but harder

 

how does the supra use the vvt so well?

 

any other input?

 

GM will be using the 2.4L in a lot of cars. The aftermarket will be huge in a year or so

 

Cars like that and the new EVO IX and possibly the upcoming Turbocharged ECOTEC use VVT properly because they're designed to. It's difficult for the aftermarket to properly tune it since the programs that run everything and tech data are not available for the ECU to look at.

 

i see so i would need a vvt controller to effectively turbo this car then, is that what u are saying?

 

Some company needs to figure out how to properly alter and control the VVT to tune it to work with forced inducation properly. What a lot of after market companies do with VVT engines they no one has properly hooked into the system is they just disable it.

 

wouldnt disabling it kill hp? or would it just kill gas mileage? or both? i dont care about the mileage but if it hurts hp then i would wait until i can get it tuned