[Redline Motorsports]

Turbos are not intended to be in the back....sounds novel but that's all it is...Turbos get excited by heat leaving the exhaust port. By the time this energy makes it to a set of turbos that far back, its 4200 rpms and the trip up the tach was just plain boring.

Oil lines, hose clamps, exhaust piping running back and forth is nothing but a long term mess. Our system is right off the stock cast manifolds, 304 stainless (on base kit) and 321 on the full race kit. All the hot side clamps are V band stainless and the inlets will be "wiggins" clamps where we can.

Our plan is that the base kit hits hard from the jump and makes power that is manageable on the stock motor. No sense putting on turbos to support 1000 hp on a stock engine when spool up makes the car faster.

The larger kit will be for the forged motor guy which is the kit we currently have on our white 2016. We actually just ordered another set of turbine housings (hot side) to see if we can cut the spool time down.....

I great turbo system is about physics not how cheap you can make it....unfortunately for some its a deal breaker but we are about getting it right.

Here is the vid from the original build;

[ussj4brolli]

My sts Turbo system on my 383LT1 has zero lag. Wrapping the system from headers to Turbo is the key. Heat makes boost...

[Redline Motorsports]

Originally Posted by ussj4brolli

My sts Turbo system on my 383LT1 has zero lag. Wrapping the system from headers to Turbo is the key. Heat makes boost...

You have the dyno sheet from that build?

[Fenriel]

always liked the rear-mount because of the lack of clutter in the engine bay, but I was always paranoid that if I got one someone would take a hack saw and steal the turbo when I was parked lol..

[jessrayo]

Originally Posted by Redline Motorsports

Turbos are not intended to be in the back....sounds novel but that's all it is...Turbos get excited by heat leaving the exhaust port.

Originally Posted by 20171LE

I've driven rear mount cars built by the best. The lag is terrible, especially on the street. Rear mounting turbos is a terrible idea and the lag is real.

Rick Squires seemed like a good guy, and I feel bad for his business, but rear mounts will never compete with front mounts or centris because it's a flawed design and any company selling rear mounts is destined to fail. But, for what it's worth, rear mount LSx cars do sound amazing.

Thanks for the back-up guys. I think the rear mount Squires system will work fine for low boost applications but like I said in my first post, if low boost is all you want the supercharger seems like the easier answer. Also if all you want to do is drag race, the lag makes no difference if you you come of the line with the engine spooled up and hold it pinned for 10 seconds. It is the street driving like 20171LE mentions where you are off and on the throttle that the turbo lag will drive you crazy.

[Atra]

I will concede that for maximum output rear mounts are not favorable over front mounted turbos.

[jimmypop13]

there's a reason car manufacturers place turbos closer and closer to the engine over the years and not further and further from them.

[Goertz]

We're developing a rear mount kit next month.
Rather than using a undersized turbo we will be using a borg warner s475 (1050hp capable in cast wheel or 1200 in billet).

Our setup will be a properly designed system with an assortment of tricks to get top efficiency out of it.

[The Idiocracy]

Originally Posted by Goertz

We're developing a rear mount kit next month.
Rather than using a undersized turbo we will be using a borg warner s475 (1050hp capable in cast wheel or 1200 in billet).

Our setup will be a properly designed system with an assortment of tricks to get top efficiency out of it.

Interested.

[Fenriel]

Originally Posted by Goertz

We're developing a rear mount kit next month.
Rather than using a undersized turbo we will be using a borg warner s475 (1050hp capable in cast wheel or 1200 in billet).

Our setup will be a properly designed system with an assortment of tricks to get top efficiency out of it.

Also interested, call me stupid, but I always thought rear mounts were cool

[LesserO2Evils]

Originally Posted by Fenriel

Also interested, call me stupid, but I always thought rear mounts were cool

I thought they were cool, too. Esp living in Utah at the high point of their 'career'. Then we saw them at the track. A lot of them, actually.
Made me think of the old adage.
"What does a 750hp Supra and a 300hp Supra have in common? 12 second timeslips."
Dont go off of dyne #s is all I will say about it...

[LesBaer]

Originally Posted by Redline Motorsports

Turbos are not intended to be in the back....sounds novel but that's all it is...Turbos get excited by heat leaving the exhaust port. By the time this energy makes it to a set of turbos that far back, its 4200 rpms and the trip up the tach was just plain boring.

Oil lines, hose clamps, exhaust piping running back and forth is nothing but a long term mess. Our system is right off the stock cast manifolds, 304 stainless (on base kit) and 321 on the full race kit. All the hot side clamps are V band stainless and the inlets will be "wiggins" clamps where we can.

Our plan is that the base kit hits hard from the jump and makes power that is manageable on the stock motor. No sense putting on turbos to support 1000 hp on a stock engine when spool up makes the car faster.

The larger kit will be for the forged motor guy which is the kit we currently have on our white 2016. We actually just ordered another set of turbine housings (hot side) to see if we can cut the spool time down.....

I great turbo system is about physics not how cheap you can make it....unfortunately for some its a deal breaker but we are about getting it right.

Here is the vid from the original build;

That's cutting it very close on pump gas unless you've replaced the fuel pump, injectors etc. Are you including that in your package? Correct me if I'm mistaken, but with this engine at our compression, if we can't deliver enough fuel, it's good bye LT1.

Also, where in NY are you located?

[Goertz]

For those dogging the rear mount. Here's the dyno of 9psi boost single turbo s475 rear mount.

Got s couple of minor improvements that will pickup the top end a bit more but all things said i think we can live with 1500rpm better spool than the so called "right" way of doing things

[LibertyHill]

No expert here, but it sure does look clean, functional and "right" back there in the hole from the suit case.

My JB4 335 needed boost dialed back in first and second gears because it developed boost so early and hard with two small turbos. I can see the slightly reduced rate of power increase being beneficial in a V-8 street car trying to hook up off the line, but once fully spooled up you're golden through the gears.