Turbo Kit possible

[Wise455]

I contacted the folks at endtankusa.com who advertise a turbo kit for the chevy cruze. They said they are very interested in making one for the sonic because they have had so many inquires about it but they need a sonic to build one on before they can make them available for shipping. They are located in Pennsylvania so if anyone that lives out there is interested and willing to help out these guys get one made so all sonic owners can order it that would be amazing. What does everyone think

 

[Red Sonic LT]

If I knew this wouldn't void my warrenty, I'd be all over this.

 

[american_tuner]

I will assume that the 1.8 has cast pistons. If boosting is in your cards 1st thing I would do is rebuild the motor. I will tell you by experience running low boost maybe OK but 1: it may not last and spin a bearing or worse throw a rod or 2: most people can not just keep it at low boost. It is addictive.

 

[american_tuner]

Last car I build on stock internals spun a bearing at 7 psi.

 

[mitdr774]

Last car I build on stock internals spun a bearing at 7 psi.

Positive manifold pressure didnt cause the bearing to spin. An issue with the oiling system or a componenet did.

I know of several Cavaliers with a turbo on them and an otherwise stock engine. Two of them are well over 100K with most of that being "boosted".

Quite a few OEM turbo or S/C vehicles didnt even use forged pistons.

 

[laborsmith]

The 2003 Cavalier (RSM Kit Supercharged) was going strong when I sold it at 60,000 miles. Mobil1 every 3000 miles. RSM rated it at 8psi. All stock engine.

Laborsmith

It occurs to me supercharging the 1.8 might be a better choice than turbocharging. And using a small centrifugal supercharger with a hi-flow bypass valve will allow all noise one could want. - L

 

[american_tuner]

Positive manifold pressure didnt cause the bearing to spin. An issue with the oiling system or a componenet did.

I know of several Cavaliers with a turbo on them and an otherwise stock engine. Two of them are well over 100K with most of that being "boosted".

Quite a few OEM turbo or S/C vehicles didnt even use forged pistons.

There was no oiling issue at all. Rebuilt the motor with Weisco pistons eagle rods arp studs just rebuilt the bottom end and never had another issue with it. The main issue with stock internals on a n/ a motor it may hold under low boost but not higher boost. That's why most kits are usually at between 6 to 8 psi.

 

[laborsmith]

There was no oiling issue at all. Rebuilt the motor with Weisco pistons eagle rods arp studs just rebuilt the bottom end and never had another issue with it. The main issue with stock internals on a n/ a motor it may hold under low boost but not higher boost. That's why most kits are usually at between 6 to 8 psi.

I agree wholeheartedly. To me that would be the reason to use a supercharger and not to use a turbocharger on the 1.8. Six to eight pounds of supercharged boost does quite well in improving drive-ability, particularly in the lower (75 and below) speeds, when compared to turbocharged.

But as I have posted before, I am prejudiced in this area.

Laborsmith

 

[Eric Smit]

And the supercharger whine is addicting in its own right.


-Eric Smit

 

[Wise455]

I realize that the motor would need to be rebuilt in order to run more psi. I plan on rebuilding my motor within the next few months then plan on getting the turbo kit. I installed a boost gauge and when i get on it, it reads up to 12psi with the stock turbo.

 

[esymr2]

I realize that the motor would need to be rebuilt in order to run more psi. I plan on rebuilding my motor within the next few months then plan on getting the turbo kit. I installed a boost gauge and when i get on it, it reads up to 12psi with the stock turbo.

Do you have the 1.4 turbo already? Members here on the forum with the Trifecta tune are already running more than 20 psi on the stock turbo on stock internals. Myself included.

 

[american_tuner]

Do you have the 1.4 turbo already? Members here on the forum with the Trifecta tune are already running more than 20 psi on the stock turbo on stock internals. Myself included.

I was talking about 1.8 n/a motors to be built for force induction. I'm sure the 1.4 Turbo is capable of plenty of boost

 

[esymr2]

I was talking about 1.8 n/a motors to be built for force induction. I'm sure the 1.4 Turbo is capable of plenty of boost

And I was asking the thread starter. Thanks. He didn't mention anything about the 1.8.

 

[d.p]

im planning on hitting mine with 100shot as soon as we figure out the injector setup

If mine holds boost should hold lol

 

[Opticon]

Just go with a wet shot and leave the stock injectors alone.


Also, Where is this shop located in PA?

 

[d.p]

but then i would still need a higher flowing fp to make sure it will hang with the amount of juice im throwing at it.

 

[Opticon]

If the stock pump supplies enough fuel to support over 20psi I'm sure it will flow enough to keep a wet nitrous system balanced.

My only concern would be what a returnless system does in that scenario.

 

[CoHPhasor]

If the stock pump supplies enough fuel to support over 20psi I'm sure it will flow enough to keep a wet nitrous system balanced.

My only concern would be what a returnless system does in that scenario.

It's technically not returnless,... there is an FPR in the tank.
Fuel System Parts from GM

The fuel pump is listed as coming with the sender and FPR.
Basically extra fuel pressure returns directly into the tank.

 

[mitdr774]

That qualifies as a returnless system. There is no return line running from the fuel rail back to the fuel tank.

 

[Opticon]

If the fuel rail (or line in this case) is a constant pressure then you can tap into it for a wet shot. If the ECU regulates fuel pump pressure as part of it's delivery system then you need to dig a little deeper to determine if it would detect and compensate for a drop in pressure... or if the pump rate is just a blind rate established in some ECU table.