Supercharging or turbocharging?

[ZBSadler]

I'm trying to decide which I should do. I have a 88' Dodge daytona 2.5. I know it will be a lot of trouble to turbo it so I was wondering what it would take to supercharge it and how much it would cost. What superchargers are made for the 2.5?

Thanks,
Zack

[gti_7]

Quote:

Originally Posted by ZBSadler I'm trying to decide which I should do. I have a 88' Dodge daytona 2.5. I know it will be a lot of trouble to turbo it so I was wondering what it would take to supercharge it and how much it would cost. What superchargers are made for the 2.5? Thanks, Zack

In terms of coversion, your looking at about the same about of work for both.. you'll have to change your fuel system regardless of what you choose.. where you will save time, not money is with the install of a supercharger, of which if your lucky enough to find one [B&M] you'll just have to plumb it in ontop of the engine and not have to worry about attaining the proper exhaust manifolds and other connections exclusive to a turbo.. oil/ coolant etc.. as most superchargers are self lubricated.

In the case your not able to locate a B&M supercharger [made for the 2.2 carbs of the mid 80's] you'll have to source out the more common of superchargers and find an Eaton supercharger from various makes and models.. make sure you find one however that will best suit your power needs and engines displacement..

the third option and probably most expensive but easiest to install [as the other two are all on your own type set ups that will require a fair amount of fab work] would be to purchase a centrifugal charger from various vendors such as vortech, paxton etc.. keeping in mind that these units make their power in a linear power band. what that means is, the faster you rev your motor, the more air they push. Again in engish that translates into, these units make their most power at the end of your power band, whereas with a turbo or roots type units you can adjust them to make power where you need it most.

I would strongly suggest you do a lot of research and ask a lot of questions before you start to buy parts.. otherwise you'll end up fustrated and would have spent a fair amount of money and time on a project you could potentially loose interest in..

best of luck in your quest!
bernard

just a thought, but easier still.. try finding a G60 unit from a vw corrado .. they are self contained units.. might find it easier to work with.. keep in mind they can be expensive to repair and buy, and their reliability is not as solid as one would hope them to be.. but they do offer an alternative..

[ZBSadler]

Thanks for the info. I'll look into it and hopefully find a solution. Probably going to go with the turbo but we will see. Thanks again.

[QKsilverF1]

why not just swap a turbo motor in??

[ZBSadler]

I would but I can't find a 2.5 turbo around here and I don't really feel like swapping to a different size engine because I've been down that road before and it sucks. Besides I already have a turbo for the car. The turbo I have is an IHI turbo that came off of a ford probe GT that has been completely rebuilt and has no miles on it. I'm thinking about selling that turbo and buying a T3 but I haven't decided yet. It is a pretty big project but I think I can make it all work out.

[3rdGen3.0]

Quote:

Originally Posted by ZBSadler I would but I can't find a 2.5 turbo around here and I don't really feel like swapping to a different size engine because I've been down that road before and it sucks. Besides I already have a turbo for the car. The turbo I have is an IHI turbo that came off of a ford probe GT that has been completely rebuilt and has no miles on it. I'm thinking about selling that turbo and buying a T3 but I haven't decided yet. It is a pretty big project but I think I can make it all work out.

2.5's are fairly easy to come by... 2.2's are even easier and are almost a direct bolt in...

you'll spend less money and less frustration by swapping... unless you really want to supercharge it...

[QKsilverF1]

yeah also youll get more performance from going to a turbo motor, for less money

[Turbo88]

TURBO ALL THE WAY!!!!!!! Like gti 7 said u have to do the same amount of work regardless. But with a supercharger you can only do so much with. but with a turbo you can do a lot more and its less stress on the engine. Remember superchargers thanks power to make power and turbo make power to make power. supercharger put a lot of stress on the main pull and only give u an instant boost and suck at top speed and aren't as durable. Besides turbo are so much fun to play with!!!!.

Turbo88

[supercharger2.2]

i don't know about them sucking at top speed i have been clocked at 145 mph at 4200 rpm in 5th with lots of power to go... i'm just afraid the car will fly away if i go any faster... and that is with a little carb and a 3.5 psi pulley... i can still put a 38/38mm carb and go to the 8 psi pulley

[DaytonaTurbo87]

The only thing is that if you go with the supercharger on the 2.5, you'll have to ditch all the fuel injection stuff. I think msd makes a mechanical distributor for the 2.2/2.5, you'd need that because the computer normally controls ignition timing. I guess you could use a larger throttle body and use a stand along fuel injection engine management system, but you'd have to come up with your own custom fuel maps and stuff. But IIRC, B&M made two supercharger for the old carbed 2.2, a small one and a big one that flowed more air. I think either would work fine with the 2.5 with a decent carb. A supercharged daytona would be cool and unique, that's for sure.

[supercharger2.2]

here ya go just for fun
http://videos.streetfire.net/player....E-6C03356DD1E1

[moparzrule]

With the technology of centrifical superchargers there is an extremely small amount of drive pulley HP loss, it's so small that a turbo's restriction in the housing is about the same if not more.
That being said, I would still go turbo. There are so many turbo cars out there just keep looking. You can literally pull one engine out and plop it in your car, you'll have to change the wiring harness and ECU too but thats not that hard. This will be way easier than fabbing up a supercharger setup. And also as someone mentioned a supercharger like a centrifical will not give much improvement in low end torque like a turbo will.