Single Turbo Preference

[platinum0921]

Working on a single turbo setup that will bolt to stock manifolds and fit in the location of the stock cats. The kit will be intercooled and connect to the second portion of the exhaust. I am currently debating rather to use a lower priced turbo with a low a/r and price the kit around 3K or use a VATN turbo and price the kit around 5K. If you are interested participate in the poll and i'll go from there. Kit should be 50 states smog legal and boost 6 to 8 psi on stock engine.

 

[cribbj]

I could be wrong, and if so my apologies, but I think to make that setup 50 state smog "legal", you're going to need at minimum a CARB certification number from California. If I were you, I'd represent that as being for racing and offroad vehicles only.

I would also suggest, just for common courtesy, that you contact the owner of the Lextreme site, at [email protected] and get his approval/endorsement/suggestions for this before you go much further with it.

 

[JustenGT8]

Is there a VATN even large enough to bother with?

 

[platinum0921]

I want to create a quick spool setup that will deliver up to 310rwhp that should be supported on the stock injectors, trans, i'll package a fuel pump with the kit. I'm getting info from a VATN manufacture about airflow cap. If it works out right i'd like the turbo to deliver max boost at 2K or less.. Also i'd like it to be smog legal in all states but if it isn't possible it isn't possible. If turbos are legal in Cali don't see why this won't be if it isn't obvious that it has a turbo. Also if this does go to production it will be sold on the product section of this site. Again if there is an interest participate in the poll. If not I won't offer a kit... thought it would be a higher demand especially at a reasonable price or great price.

 

[stevechumo]

It's good to hear you're onto turbo...As from what I've known, 310 rwhp isn't possible with 6 psi, perhaps at least 8 psi like you said.

As regards to smog legal in Ca, then I'd say it's possible but the chance is really slim. You'll have to pay a lot of $$$ to get it 50 state legal. Most production turbo kits are not smog legal, although some supercharger kits are. If you only build this kit for yourself, then it's even more impossible.

 

[platinum0921]

Hmmm... if there is a demand... i'll try and make it as legit as possible. I haven't owned a car in the states so i'm unsure of how that process works. But if it's possible I will persue it.

 

[cribbj]

Just to give you an idea, some of the largest tuners in the USA have been talking about CARB certification for their single turbo kits for the Supra for the last 8-9 years and haven't done it yet.

It's not a minor undertaking. Just advertise it as "for offroad and racing vehicles only" and save yourself $50K to $100K (guesstimate for CARB testing & certification)

 

[platinum0921]

With the offroad label cars in California will not pass smog? Which means they can't be re-registered with the kit installed. Is that the case?

 

[Lextreme II]

Couple of issues:

1. Which model are you making for? Because the Soarer will be slightly different then the SC400 as well as the Celsior with LS400

2. How are you going to manage the oil return issue?

3. What size of turbo you will be using?

4. Gound clearance due to low mount?

 

[platinum0921]

Lex the difference between the two is the exhaust. That is the only difference between the cars. The oil return depends on what the people want. VATN has an integrated lubrication system... a normal turbo would need a line... which wont be a problem... it would require user modification though. I was thinking of getting a oil pan with the turbo oil inlet made but that would add to the costs. I envision a low boost low HP setup with max boost at about 2000 RPM or less... look at the new 335I it's soo fast becuase it has 300LBft of torque at 1200 RPM.... if I can accomplish that 300rwhp will get you a 12 sec 1/4 mile and no turbo lag. Ground clearance won't be a problem either.

 

[Toysrme]

Find one of the super rare diesel foil bearing turbo's. They've been around awhile tho I've never seen one, nor know of a supply.

 

[platinum0921]

There has only been three responses to the poll so it may not matter.

 

[Lextreme II]

Its great that you are fire up to this project. As for any bolt on even different year of the car would be slightly different. I think its more then just two version of the exhaust. How it would fit and how the clearance between models would be an issue. We can not assume what work on the LS400 will work on the SC400. If you are off by 1/2", then its a problem. If you are doing low mount, that means the oil return from the turbos will be the same level to the oil pan or even lower then the oil pan.

If you are going to make a new oil pan, then u are opening another can of worms. How would this new oil pan would fit and clearance of other parts and the ground. There are lots of issues unless its actually made and dyno some real numbers.

People might post their interest but when it come with write a check 99% of people will back out. Please let me know if I can help you with anyting. I have done the low mount twin turbo 5 years ago and perhaps I can give you some feedback from my personal experience.






That was my dyno at 8 psi with meth injection.

 

[platinum0921]

I don't expect it to be that low I anticipate it being conciled and yeah I know what you mean about commitment. My initial direction was to just create the cheapest kit I could.... providing maximum HP for the cheapest price... and that's probably what i'll do. It'll only be for the SC400 91-95. I think the LS has different headers... and the newer SC's probably do too. Again this was just to give SC V8 owners the turbo option.

 

[Lextreme II]

Hey if works, I might be interested too....