Start Of My 1.8l Turbo System

[ChrisJ]

You have MUCH to learn Scott, much to learn. Compression ratio has nothing to do with the numbers you are looking at. I would have more concern about KR, my bottom end and my pistons when talking about compression ratios.

1psi = 10hp is rarely the case either. 8-12hp is a decent figure, but not always correct.

The reason I'm staying out of the 1.4T and the 1.8T stuff is I've been down this road before, and it gets very expensive. I went through three 41TE transmissions in my PT Cruiser and the 4th was on it's way out with less than 50k miles, I don't want those headaches again. Granted, that little 2.4l got me well over 400whp but still lol.

I think the drivetrain is what's going to bring this project to a grinding hault to be honest. Much respect to the gentlemen who make it work somehow, I'll keep watching this thread for updates. Good luck guys

How does "1psi =10 HP" ever work? For example how could that rule apply to a 100cc engine the same as it would to an 8 liter one?

 

[Camaroboi13]

How does "1psi =10 HP" ever work? For example how could that rule apply to a 100cc engine the same as it would to an 8 liter one?

It doesn't which is why I said it won't always work. It's been a general rule of thumb for a long time but as you stated there are no specifics behind it. The efficiency of the motor also comes into play but we won't get into that either. Let's just see someone build a 1.8T and find out what he/she comes up with.

 

[Scott1_2]

I figured you go small psi less problems with drivetrain like i said I'm still new but to get my sonic to beat a stock fiesta st would make me happy so around 200hp

My main thing i want Is fuel economy i would like to get around 50mpg i get 42 right now.


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[$ub$onic]

I figured you go small psi less problems with drivetrain like i said I'm still new but to get my sonic to beat a stock fiesta st would make me happy so around 200hp

My main thing i want Is fuel economy i would like to get around 50mpg i get 42 right now.


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IMO anything above a couple psi is going to lead to longevity issues.

With that said, even a .5 psi would make a difference. Just letting the engine not have to work to get air I think would lead to a nice mpg bump is done correctly

 

[Scott1_2]

Exactly, iv had my sonic a little over a year now and already put 37,000 miles on it the highest iv gotten was 42 so just a bit more would be nice


Also to just pass a 1.4l stock lol but mostly gas milage


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[Scott1_2]

http://www.cruzetalk.com/forum/35-1-8l/9288-i-heard-you-guys-want-turbo-kit.html


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[$ub$onic]

http://www.cruzetalk.com/forum/35-1-8l/9288-i-heard-you-guys-want-turbo-kit.html


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I don't think the cruze kit will fit the sonic to well. Only a guess since there is 2 different header deigns

 

[Scott1_2]

Are you talking about the luw and lwe engines?


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[SonicSteve]

Well mayhe but i doubt its much different...

 

[$ub$onic]

Well mayhe but i doubt its much different...

I'm sure you could make it work