US Headers & Exhausts NA

[Dupain]

Do you even understand what tuned means?

"Product Info and Spec:

Header:
1.65" Equal Length Runners"

they have a rather broad definition of "equal length".

Also, how exactly does the secondaries attach to the tertiary?

The bracket in the photo Steampunk.

[project.r.racing]

Do you even understand what tuned means?

Gas flow rates to the collector from each outlet. Arrive same time.

Have you looked at the pictures? The primary on cyl 1 must be at least 10cm longer than all the rest.

[hks_kansei]

Don't brush it off because it is cheap and on E Bay. CX Racing has a huge range of products.

It's not that it's an ebay product, it's that in the pictures (both stock photo, and fitted picture) it's quite clearly visible that the runners are not equal length.


But, please do buy them, and when they arrive grab a tape measure and let us know the length of each runner.

[Steampunk]

Do you even understand what tuned means?

"Product Info and Spec:

Header:
1.65" Equal Length Runners"

they have a rather broad definition of "equal length".

Also, how exactly does the secondaries attach to the tertiary?

The bracket in the photo Steampunk.

Bracket?

I see a set of primaries/secondaries,
I see a tertiary pipe with flexi joint,
I see a constant-torque T-bolt clamp that is designed for securing rubber/silicon hoses....

If that company is seriously telling us to attach two metal pipes that are in constant high thermal fluctuations and considerable vibration with a T-bolt clamp... that in itself speaks volumes. No?

[emily_mx5]

^ Umm what?
Not a silicone hose clamp, that's a V band.

[project.r.racing]

doesn't matter what it is. its purpose is to bind the 2 sections together. it is illegal. and it is doesn't fall apart first at this locking point, then the DOT will have fun in the pit with it.

it still requires work to make it legal, ie flanges welded on replaced the clamp section, and even the still the turned length runners are questionable.

even if they were tuned length, that size primaries and length, you have to be looking for 8000-9000 rpm. and doubtfull it will drive properly under 3000rpm.

[Dupain]

^ Umm what?
Not a silicone hose clamp, that's a V band.

[Dupain]

Do you even understand what tuned means?

Gas flow rates to the collector from each outlet. Arrive same time.

Have you looked at the pictures? The primary on cyl 1 must be at least 10cm longer than all the rest.

I'll do a outer diameter measurement of the cyl 1 tube compared to the others. The inner diameter of a section/s on the cyl1 should be a touch thinner but how do you know?

Look in the end, I'm reviewing a cheap, decent looking header with promised power gains.

I'm a fan of the smaller tuners and generic suppliers. How much are Maxim Works headers new? $1000.

My current cat back is a little known Spurt Racing K1 exhaust with a stock like tip, all s/s, 7kg, straight through middle pipe, sounds awesome, + hp with the HKS headers - burps/growls when pushed but is only 93bd at crusing speed, and the system was $270.

[project.r.racing]

Do you even understand what tuned means?

Gas flow rates to the collector from each outlet. Arrive same time.

Have you looked at the pictures? The primary on cyl 1 must be at least 10cm longer than all the rest.

I'll do a outer diameter measurement of the cyl 1 tube compared to the others. The inner diameter of a section/s on the cyl1 should be a touch thinner but how do you know?

length of runners! not diameter.

[plohl]

This is great!

[tbro]

SHEEET!!!ahhhhhhhhhh,
me thinkem me showem to mr stewart@ gls. He mite make some goodly copy for racing cars to go more faster, good idea Plohl
mr gary be very gracious and makem for you and me too.

[Dupain]

Do you even understand what tuned means?

Gas flow rates to the collector from each outlet. Arrive same time.

Have you looked at the pictures? The primary on cyl 1 must be at least 10cm longer than all the rest.

I'll do a outer diameter measurement of the cyl 1 tube compared to the others. The inner diameter of a section/s on the cyl1 should be a touch thinner but how do you know?

length of runners! not diameter.

Diameter also affects how fast fluids flow through it. Say a garden hose with the same water pressure will push water through faster than say a drain pipe.

[Dupain]

So you would expect the primary on cyl one to have a slightly smaller internal diameter to tune it to compensate for thevextra length.

[project.r.racing]

Do you even understand what tuned means?

Gas flow rates to the collector from each outlet. Arrive same time.

Have you looked at the pictures? The primary on cyl 1 must be at least 10cm longer than all the rest.

I'll do a outer diameter measurement of the cyl 1 tube compared to the others. The inner diameter of a section/s on the cyl1 should be a touch thinner but how do you know?

length of runners! not diameter.

Diameter also affects how fast fluids flow through it. Say a garden hose with the same water pressure will push water through faster than say a drain pipe.

So you would expect the primary on cyl one to have a slightly smaller internal diameter to tune it to compensate for thevextra length.

Someone asked you a question whether or not you knew what tuned was. Clearly by your answers you dont understand.

You are telling us that the diameter for 1 pipe will be smaller to allow the gases to move faster than the other pipes. So the pressure from the pipe will be higher that be pressure from the other pipes when hitting the collector.

If this is how these pipes have been design. Then they are not tuned. Simple.

What you would actually expect from the cyl 1 piping is next to no loop on it.

[sailaholic]

If each cyclinder creates the same volume of gas why would you make one primary smaller?