[Patriot Motorsports USA]

Just wondering if someone has made the switch from the LT4 superchargers to a twin turbo system and what were the results?

My application would be for road-racing time-attack style events and looking to add Boost-By-Gear programming with traction control and other updates.

Thanks!!

[GAOLDGUY]

This is the install Jannetty did. You may find it interesting:

https://www.facebook.com/jannettyrac...5676361319091/

I assume it would be easy to turn up the boost with the insurance of an LT4.

[Patriot Motorsports USA]

Originally Posted by GAOLDGUY

This is the install Jannetty did. You may find it interesting:

https://www.facebook.com/jannettyrac...5676361319091/

I assume it would be easy to turn up the boost with the insurance of an LT4.

I saw that build a while back... made good power on the LT1 considering the pistons & rings are the weak link on that platform. I am wondering how well the added control of boost with turbos, the control of application of power out of the corners and curves could decrease laptimes. Also thinking the removal of many heavy components would be beneficial to weight bias. Ultimately gaining the power lost by the supercharger imposing drag on the crankshaft.

Thoughts?

[dreksnot]

Can't help but to love them twins. winged1 did a (low) mid-mount Huron twin setup on his LT1 with nice results (look several thread down). Try and keep the heat from under the hood area as much as you can with these mids being a better result. With a good boost controller, the boost-by-gear is awesome and can help maintain traction throughout the RPM range. I have been thinking about the twin-charge setup using the Huron system feeding the LT4 SC... Crazy, yea.

[Joshinator99]

Originally Posted by ZLElvira

Just wondering if someone has made the switch from the LT4 superchargers to a twin turbo system and what were the results?

My application would be for road-racing time-attack style events and looking to add Boost-By-Gear programming with traction control and other updates.

Thanks!!

I don’t think there is anything to be gained unless you’re trying to run 7 second quarter mile times (and even then a PD blower can do it lol). If you’re after boost by gear then marry a Smoothboost to THPSI Reflex. Just my 2 cents.

[jlaudio11]

Originally Posted by ZLElvira

Just wondering if someone has made the switch from the LT4 superchargers to a twin turbo system and what were the results?

My application would be for road-racing time-attack style events and looking to add Boost-By-Gear programming with traction control and other updates.

Thanks!!

What are your goals or what are you trying to achieve? Big enough turbos to really outshine the power of the pd blower is going to have boost lag. Heat can still be an issue for iats and oil temps. Pulleying for more and some kind of smoothboost does sound ideal.

[dreksnot]

Originally Posted by jlaudio11

What are your goals or what are you trying to achieve? Big enough turbos to really outshine the power of the pd blower is going to have boost lag. Heat can still be an issue for iats and oil temps. Pulleying for more and some kind of smoothboost does sound ideal.

The right (efficiency) turbos will easily outpower the LT4 (and others); they don't have to be big turbos either, pound-for-pound boost. IAT's will likely be lower than the SC. Yes, there will be some lag when slamming the throttle at a low RPM but if the motor is in the higher band, boost will be very quick (but not the instantaneous slam of the LT4). There are now oil-less turbos that don't heat the oil, some are water-cooled (choices out there). But then again, that SC instant torque of slamming one back in the seat is not like a turbo jetliner takeoff.

[Patriot Motorsports USA]

Originally Posted by jlaudio11

What are your goals or what are you trying to achieve? Big enough turbos to really outshine the power of the pd blower is going to have boost lag. Heat can still be an issue for iats and oil temps. Pulleying for more and some kind of smoothboost does sound ideal.

My goal is to have the most efficient power, more control of the boost pressure for events where elevation changes like Pike's Peak can be more effective with turbos, and to soften the hit off the corners so traction is not compromised.

Removing the crank driven supercharger will remove twist, drag and heat associated with just driving the SC alone. It will also remove weight on top of the engine and I can either use Air-to-air intercooling or my own water-to-air system.

Right now the fastest cars in Time Attack are using Turbos for power adders, and it just seems the evolution should be in that direction.

[jlaudio11]

Originally Posted by ZLElvira

My goal is to have the most efficient power, more control of the boost pressure for events where elevation changes like Pike's Peak can be more effective with turbos, and to soften the hit off the corners so traction is not compromised.

Removing the crank driven supercharger will remove twist, drag and heat associated with just driving the SC alone. It will also remove weight on top of the engine and I can either use Air-to-air intercooling or my own water-to-air system.

Right now the fastest cars in Time Attack are using Turbos for power adders, and it just seems the evolution should be in that direction.

Rereading what you originally said combined with this. Are you planning to go motec? Boost by gear is only going to be possible on this platform with a boost controller that can input the individual gear over can. I’m not even sure what controller can do that. My ams 1000 did it on my motorcycle but that was by resistance in the gear position sensor. These 10spds don’t have that. Anything is possible, it just seems like you’re venturing into full blown race car. After watching a YouTube video of your car, it seems likes you’re car is more of a hopped up street car than race car.