Headers?

[Drudge]

Anyone make or is developing headers for our platform? I'm assuming a shorty tube header would work best with our turbo engines. Any insight would be appreciated.

 

[JDM_Man]

The car already spools super quick, not sure it would be beneficial in that term also depending where stuff is it could end up melting some stuff lol

 

[CKeeler]

The exhaust manifolds are built into the cylinder head

 

[Stiletto]

Yep, headerfold, like CKeeler said. You could custom fab an exhaust manifold for a different turbo. How deep are your pockets??

 

[Drudge]

The exhaust manifolds are built into the cylinder head

So a higher flowing header is pretty much impossible.

 

[JDM_Man]

The exhaust manifolds are built into the cylinder head

This makes more sense lol

 

[Stiletto]

So a higher flowing header is pretty much impossible.

The volumetric efficiency of the headerfold is matched to the turbo. And, the proximity to the exhaust ports minimizes lag. So, putting a traditional manifold on (not that you have much room to do this) might actually negative impact.

 

[KDM Harley]

The volumetric efficiency of the headerfold is matched to the turbo. And, the proximity to the exhaust ports minimizes lag. So, putting a traditional manifold on (not that you have much room to do this) might actually negative impact.

Yes bro I love the way you said it.

I explained this exact point to my coworker yesterday.

We were looking in the engine bay and I pointed at the turbo and said “see that’s one of those tiny turbos, it’s basically integrated into the sides of the block leaving pretty much no air flow travel.” I said “they’re small but there’s practically zero turbo lag because of this design.”

Combined with the direct injection our platform slingshots from a dig most impressively and is why we can beat naturally aspirated engines with 2 more cylinders and 200 more horsepower.

That is why I bought this car.

 

[Thomby]

We were looking in the engine bay and I pointed at the turbo and said “see that’s one of those tiny turbos, it’s basically integrated into the sides of the block leaving pretty much no air flow travel.” I said “they’re small but there’s practically zero turbo lag because of this design.”

This thread is from the early days of the Stinger and has some incorrect info. The Stinger doesn't have exhaust manifolds integrated into the block (and it would need to be the cylinder heads anyway).

What it has are exhaust manifolds integrated with the turbo housings, and the main benefit is probably assembly. The turbos spool very quickly due to both their size and how small the manifold/housing necks down, but this also becomes a major restriction up top, hence guys short-shifting at 5800.

The bigger downside is that you can't easily upgrade the turbos, because the exhaust restriction will still limit flow, unless you replace the entire manifold/housing ($$$). This video shows the manifold/housing, and talks about the restriction starting about 3min in:

 

[KDM Harley]

This thread is from the early days of the Stinger and has some incorrect info. The Stinger doesn't have exhaust manifolds integrated into the block (and it would need to be the cylinder heads anyway).

What it has are exhaust manifolds integrated with the turbo housings, and the main benefit is probably assembly. The turbos spool very quickly due to both their size and how small the manifold/housing necks down, but this also becomes a major restriction up top, hence guys short-shifting at 5800.

The bigger downside is that you can't easily upgrade the turbos, because the exhaust restriction will still limit flow, unless you replace the entire manifold/housing ($$$). This video shows the manifold/housing, and talks about the restriction starting about 3min in:

Hey thanks for that, I’m surprised I haven’t seen this video.

With the right amount of money anything is possible right haha.

I don’t know a lot and can’t explain every detail but what you’re saying about the restrictions makes perfect sense.

Edit: watched the video and some more, I may upgrade my ignition coils now haha. That channel is informative thanks again for putting me on that.

External waste gate was a good idea and seemed like it could work to relieve the redacted back pressure for bigger turbo upgrades. The turbo “headerfold” was designed for the small turbos so it makes sense it bottlenecks before the turbine. On the other hand the 2.5” exit doesn’t make sense unless it’s for some pressure value the engineers took into account for.

Anyways now I’m curious, the turbo housing/manifold in a larger diameter cast like he was saying, Is it on the market? Have them produced it yet?

 

[Thomby]

Anyways now I’m curious, the turbo housing/manifold in a larger diameter cast like he was saying, Is it on the market? Have them produced it yet?

External wastegates would be a partial measure, as they would relieve back pressure buildup, but also throw away that energy vs. using it more effectively. Welding a larger diameter section in place would seem like the obvious workaround, but I haven't seen anyone do that.

A new set of manifolds would be the true fix, and I wouldn't expect it to be that expensive, but the low volume of our cars (and therefore fewer potential turbo-swappers) make it harder to recoup the development costs. The only examples I've seen are from Lap3, available as part of their $12k turbo upgrade kit but not separately:

Stinger/G70 3.3T Twin Turbo Upgrade Kit | LAP3

The world's most powerful build What is included- Twin XCarget XT26 Turbo- Twin Turbo Housing- Twin Turbo Manifold- Twin Tial MV-S Wastegate- Twin Downpipes- Custom Oil Lines- Custom Coolant Pipes- Charge Pipe- Intercooler- HKS Blow Off Valve

www.lap3usa.com

That's a lot of money for 600whp.

 

[KDM Harley]

External wastegates would be a partial measure, as they would relieve back pressure buildup, but also throw away that energy vs. using it more effectively. Welding a larger diameter section in place would seem like the obvious workaround, but I haven't seen anyone do that.

A new set of manifolds would be the true fix, and I wouldn't expect it to be that expensive, but the low volume of our cars (and therefore fewer potential turbo-swappers) make it harder to recoup the development costs. The only examples I've seen are from Lap3, available as part of their $12k turbo upgrade kit but not separately:

Stinger/G70 3.3T Twin Turbo Upgrade Kit | LAP3

The world's most powerful build What is included- Twin XCarget XT26 Turbo- Twin Turbo Housing- Twin Turbo Manifold- Twin Tial MV-S Wastegate- Twin Downpipes- Custom Oil Lines- Custom Coolant Pipes- Charge Pipe- Intercooler- HKS Blow Off Valve

www.lap3usa.com

That's a lot of money for 600whp.

Yeah I’ve seen that kit, not worth it to me honestly. It’s fast enough with stock turbos. I’ll never go Meth either because remember drugs are bad, even for your cars. Thanks man, you’re knowledgeable, cheers.

 

[BIG-D]

Shut up and take my money...

 

[Thomby]

These are what we need (left side).

I wonder if @LAP3 Performance wouldn't make more selling (dozens? hundreds?) of the manifolds alone for $1000 or whatever, vs. the full kit that I can't imagine more than a handful of people can/will buy...especially since the development work is already done.

 

[KDM Harley]

These are what we need (left side).

I wonder if @LAP3 Performance wouldn't make more selling (dozens? hundreds?) of the manifolds alone for $1000 or whatever, vs. the full kit that I can't imagine more than a handful of people can/will buy...especially since the development work is already done.

View attachment 88297

Damn bro you found it, that is what we need. Already prefabricated for the exit port and yeah probably would sell way more of these than the full kits.

 

[BIG-D]

Anyone thought of swapping manifolds left to right and then mounting a single BIG turbo in the rear... exh pipe merged down one side, intake pipe back to the front on the other and you won't even need an intercooler...

Plus the weight will be over the rear axle.

Be a lot cheaper than a package deal hi mount kit from lap3 if you have fabrication skills and a welder...

Peace.

 

[Thomby]

Are you talking about mounting at the rear of the engine, or rear of the car (remote turbo setup)? In either case I'm not sure what problem it's solving...

Stock manifold/housings are a severe bottleneck up high, and if you're going to fabricate new ones, you'll probably just want to swap bigger turbos into the existing layout and move on to the other limiting factors (fuel, head studs, maybe transmission).

 

[Volfy]

Instead of dumping $12k + labor into the Stinger, you'd be better off just move on to another platform. Stinger is a GT car, and that much HP/TQ will just write checks that the rest of the car can't cash... unless, of course, all you care about is smoking some unsuspecting fool on a roll-on freeway grudge match.

 

[KDM Harley]

Instead of dumping $12k + labor into the Stinger, you'd be better off just move on to another platform. Stinger is a GT car, and that much HP/TQ will just write checks that the rest of the car can't cash... unless, of course, all you care about is smoking some unsuspecting fool on a roll-on freeway grudge match.

Smoking fools is always fun and the stinger stock is still very good.

 

[BIG-D]

Are you talking about mounting at the rear of the engine, or rear of the car (remote turbo setup)? In either case I'm not sure what problem it's solving...

Stock manifold/housings are a severe bottleneck up high, and if you're going to fabricate new ones, you'll probably just want to swap bigger turbos into the existing layout and move on to the other limiting factors (fuel, head studs, maybe transmission).

Well hang on...where would you fit a BIG rear mount turbo at the back of the engine on one of these?

Of course the bit about the weight being shifted over the rear of the axle may have given it away for some