Alright, well what are the pros and cons of a Twin Turbo vs. a Single Turbo? This company has a Twin Turbo for $6,500 that puts around 460hp at the wheels right here, but this company has a Single Turbo that puts around 480hp at the wheels for $5,000 right here. Why would you spend $1,500 more for less power?

 

you can see that the twin setup can get up to 650 RWHP with a head and cams package whereas the single is probably close to maxed out. Plus the different sizes of the turbos react differently. Two small vs. One big

 

the number of turbos you have does not determine the power level.

you can reach just about any power level with single or twin, it just matters how the engine is set up, and what turbos you use.


the reason some people prefer to go with twins is for quicker spool up.

other prefer single because its easier to fit in the engine bay, and costs less.

 

I always thought that one larger single turbo is better than 2 smaller ones. Don't most of the powerful supras use a single turbo setup?

 

they have 3 liters to work with, we have 5.7 to work with!

 

yah all the big supra tuners stick to one turbo......... but like he said it is a little 6 cil

 

you gota respect supras, any car that can go from 200hp to 1000hp with a turbo upgrade is impressive. The highest I've seen a turbo kit produce on a LS1 is 700ish hp. Not bad at all, but it would be nice to get your hands on a twin turbo kit like some vettes have that produce 1000+hp. I don't think the lag would be that bad though with a LS1 cause we have plenty of power until the turbo kicks in where as supras don't.

 

You've got to remember the cost and streetability of a 1,000hp car. It doesn't come any cheaper for a Supra or Vette than it does most other cars. A lot of them don't run their preferred boost levels on the street because they can't run 100+ octane all the time (edit: among many other things.)

I'm starting to think some picked up that "but it can get 1,000hp!" reputation from Gran Turismo games.

I'm personally a fan of twins more than large single turbos, but maybe that's just me. I'd take a supercharger over both of them.

 

you mean GT3 isn't REAL? Yeah I guess you're right about that. I just wish I would see a 1000hp F-body thats streetable. I USED to have a 3rd RX7 that was twin turbo, it didn't have Traction Control (Any time someone thinks that F-bodys are put together cheaply, just remember that our cars only cost 25k-30k where as the RX7 cost 40k new 10yrs ago, and it was supposed to be their super car like the vette is for GM, anyway the thing didn't even have traction control on a 40k dollar car!) My point from all that was that without some sort of Traction control/Posi, Twin turbo is much safer than single turbo, because the boost would come on gradually through the RPM range instead of on like a switch wich would cause you to loose control in the rain. Superchargers RULE too!

 

I would only buy the PTK tubro kits. The one for the ls1 is coming out soon if it isn't out yet. Most of the turbo technologies users have upgraded most of their system. Turbo kits can be a pain in the ***. A blower would be much easier.

 

You're joking right?

 

what kind of boost levels are these kits running?

and how does the stock internals of the ls1 react to mild boost? i know the lt1 hates it due to high compression.

don't know about the ls1

 

The LT1 hates it because of weak ringlands. LS1s don't have problems with relability at 9psi and 500rwhp. Beyond this you will reduce the reliability, but people have documented 600rwhp+ stock blocks holding up

 

ask people with twins, and thats what a lot of them say.

i didnt say it was correct, i just said why some people choose to go that route.

dont listen to these other guys saying "because its a smaller engine so they just use a single" blah blah blah.....its because they have an Inline engine......its much easier AND cheaper (do you want to buy one, or two $1500-2k turbos?) to route a single than twins.......there ARE twin turbo kits for the supra, and they are making over 700-800rwhp, but look at this pic, its a tight fit.....single is much easier to fit and costs less.twin turbo supra

 

but a small single will spool faster than large twins

spool is determined by the total package........the engine, the turbo size, and the manifolds etc..........not just how many turbos you have.


uh.........there is no turbo kit being offered that only uses one bank of cylinders to spool. that would be completely messed up.