Anyone recognise this exhaust manifold ?

[Dr Evil]

Imported from the US although i,ve not seen one like it before .
just wondering if this is a commercially made manifold or a one off custom jobbie ......

 

[dbsupra90]

that is a custom manifold made out of weld els and looks like a t4 flange.

 

[Dr Evil]

that is a custom manifold made out of weld els

Thanks that makes sense , and probably why i,ve not seen another ....
excuse my ignorance but what are weld els ?

The turbo on it is a garrett to4e with all the usual fuel upgrades etc ,

Any ballpark ideas what power levels will be achieveable with this setup ?

 

[dbsupra90]

weld els are plumbing/gas pipe angles.

often used to build budget manifolds since the material is so cheap.

its hard to say power levels since a to4e can be a range of sizing and also what boost level and other supporting mods. if you want a ballpark id imagine somewhere in the 400rw range.

 

[Dr Evil]

if you want a ballpark id imagine somewhere in the 400rw range.

That will do for me .....thanks for the replies :icon_bigg

 

[spinningheadboy]

That manifold came from me. It was made in Cali, custom for the set-up and sold to John in the U.K.(John had the turbo rebuilt) That set up made 407 on the dyno here in Idaho before we blew the fack out of the head gasket. The supra was doing high 12 second quarter's before it blew (Block was not properly surfaced for MHG). The car had full exhaust, SAFC, lexus afm, Fuel pressure reg with walbro pump and a boost controller. That's about it.

cwd

 

[PowerTrip Performance]

weld els are plumbing/gas pipe angles.

often used to build budget manifolds since the material is so cheap.

its hard to say power levels since a to4e can be a range of sizing and also what boost level and other supporting mods. if you want a ballpark id imagine somewhere in the 400rw range.

Not exactly, those elbows go for about $7.00 each, and the tees are $25 or so, with the flanges and all you'de be in one of those for about $200-250, minus ceramic coating, welding, and so on.

 

[MDCmotorsports]

Looks like one of John Lunsfords old manifolds.....

 

[Dr Evil]

Chris : Thanks for the additional info , i remember you writing a bit about the manifold and turbo background in my build thread but didn,t realise you had such a close link with the setup as you obviously do .

Power trip/ MCD , whoever made it did indeed ceramic coat it and went to great trouble in making it a well finished item .

 

[mkIIIman089]

Interesting choice of running bolts instead of studs for the exhaust manifold.

 

[MK3Brent]

Interesting choice of running bolts instead of studs for the exhaust manifold.

You can still thread studs in there.

 

[Dr Evil]

Interesting choice of running bolts instead of studs for the exhaust manifold.

After the usual stud carnage when removing the exhaust manifold i removed the remaining studs and had them all helicoiled .....figured the stainless bolts look tidier .

 

[Reign_Maker]

Meh, bolts with locking washers are fine... I was going to run studs, but they were too soft, so I went with a higher grade bolt and lock washers...

Nice piece Evil...

 

[suprarich]

Hello Evil, good to see you over here, I got one of those very same manifolds laying in my shop, flanged for a different turbo however. Cheap to build yes, but heavy.

 

[MK3Brent]

Question: What keeps the pulses from crashing into each other.

 

[adampecush]

clearly nothing does.

 

[Dr Evil]

Reign : Thanks

Rich : Thanks for the welcome

Brent/adam : your right theres no way to isolate the pulses afaik with this type of manifold .....it uses the same flow principles as the stock one , although imo there must be some benefit of having the runners so short ie : faster spool time ? , although i,m sure this is open to debate as this type of manifold does not have the scavenging effect on the exhaust gases like the header type does.

 

[adampecush]

What you really end up doing with a manifold like this is creating very uneven backpressure to the individual cylinders. While the manifold will get the job done, the flow paths inside the manifold won't be conducive to high hp applications.

 

[Dr Evil]

Yep i agree with what your saying Adam , however my goal is 400rwhp which has been proven possible with that type of manifold and after having driving it for a few hundred miles i,m glad to say i,ve got no concerns with it.:icon_bigg

Que comments of ( once you,ve got 400 you,ll want 500 lol ) :biglaugh:

 

[MRSUPRA]

Don't worry, a manifold like that will still make plenty of power. Not as much as a tubular manifold, but its not like its going to cause a cut-off in power. I have seen manifolds like this make 600+rwhp easily with 67mm turbos.