JDL 5130 Twin Scroll Turbo Kit

[DriftEightSix]

What made you go for the 4-2-1 instead of 4-1?

[MattF]

Originally Posted by DriftEightSix

What made you go for the 4-2-1 instead of 4-1?

Its a 4-2 that is what makes it a twin scroll setup. Google twin scroll turbos.

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[Supermassive]

Originally Posted by Huehuecoyotl

You around tommorow? I'm down in PHX and want to see the car!

Hey are you still in PHX, I'm itching to drivearound and wouldn't mind stopping for a brew somewhere...like say San Tan Brewery?


Also Awesome job JDL, I'll have to stop by sometime and see what you guys are up to!!!

[Huehuecoyotl]

Originally Posted by Supermassive

Hey are you still in PHX, I'm itching to drivearound and wouldn't mind stopping for a brew somewhere...like say San Tan Brewery?


Also Awesome job JDL, I'll have to stop by sometime and see what you guys are up to!!!

I will be in PHX for sure tuesday. Will reach out. Planning on hitting a dyno, and a bar sounds about right afterwards. will keep you posted on the regional thread!

[DriftEightSix]

Originally Posted by MattF

Its a 4-2 that is what makes it a twin scroll setup. Google twin scroll turbos.

Sent from my SCH-I605 using Tapatalk 2

lol lol lol... opps what a noob i am.

Yes I see it has to feed both parts of the turbo hence needing to be 4 - 2... derp

[JDLAutoDesign]

Originally Posted by DriftEightSix

What made you go for the 4-2-1 instead of 4-1?

Garret has a really good explanation for this I posted a page back

Originally Posted by JDLAutoDesign

Turbo Tech

A design feature that can be common to both manifold types is a " DIVIDED MANIFOLD" , typically employed with " DIVIDED " or "twin-scroll" turbine housings. Divided exhaust manifolds can be incorporated into either a cast or welded tubular manifolds.

The concept is to DIVIDE or separate the cylinders whose cycles interfere with one another to best utilize the engine's exhaust pulse energy.

For example, on a four-cylinder engine with firing order 1-3-4-2, cylinder #1 is ending its expansion stroke and opening its exhaust valve while cylinder #2 still has its exhaust valve open (cylinder #2 is in its overlap period). In an undivided exhaust manifold, this pressure pulse from cylinder #1's exhaust blowdown event is much more likely to contaminate cylinder #2 with high pressure exhaust gas. Not only does this hurt cylinder #2's ability to breathe properly, but this pulse energy would have been better utilized in the turbine.

The proper grouping for this engine is to keep complementary cylinders grouped together-- #1 and #4 are complementary; as are cylinders #2 and #3. Because of the better utilization of the exhaust pulse energy, the turbine's performance is improved and boost increases more quickly.


Twin Scroll or Divided are usually more due to the increased fab time and the addition of an extra wastegate.

[NomoreNA]

Can I buy a kit minus the turbo and bov

[JDLAutoDesign]

Im sure we can figure something out.


Back from coating!

[Unleashed]

Where are the numbers from that dyno day?

[Tansey86]

Originally Posted by Unleashed

Where are the numbers from that dyno day?

That day hasn't come yet.

[Unleashed]

my apologies.

[Tansey86]

Originally Posted by Unleashed

my apologies.

All good dude, im just as anxious as you are. I believe we will see some numbers around the 15th.

[civicdrivr]

@JDLAutoDesign - How soon after the shootout do you plan on selling the kit, provided everything goes well on the track?

[RD1428]

Originally Posted by JDLAutoDesign

Quick shot of the manifold before we sent it to the coaters last night

if you could sell me just this only i will buy. please PM me