T4 manifold for gt42 turbo's thats not a top mount?

[90laserRSfwd]

Just wondering if there is such a thing out there? Didn't come up with anything really stating a clear yes or no. I'll be calling punishment racing today about there T4. I'll let everyone know my findings.

 

[tbTalonES94]

DNP T4 manifold..

 

[90laserRSfwd]

I didn't know the DNP would fit a 4202 compressor cover without removing the water pipe. Do you have any pictures of this ?

 

[twicks69]

I have seen it used on 1G using an aftermarket radiator, and will fit using a 1G non-turbo water pipe.

It fits on 2G's by using a 1G non-turbo water pipe, and the stock radiator using a slim-line fan.

The DNP T4 divided flange tubular exhaust manifold does work.

I have fitted one on my car (but I am running a GT4088R currently), and Jake Hanhardt had it on his 1G (topstreet).

It may require fitment modifications based on each person's application.

 

[90laserRSfwd]

I have seen it used on 1G using an aftermarket radiator, and will fit using a 1G non-turbo water pipe.

It fits on 2G's by using a 1G non-turbo water pipe, and the stock radiator using a slim-line fan.

The DNP T4 divided flange tubular exhaust manifold does work.

I have it on my car, and Jake Hanhardt had it on his 1G (topstreet).

Seems like the DNP only has a prevision for (1) 44mm waste gate. Have you ever tried running low boost with only one gate (by low boost I mean 24 to 26 psi). ?

 

[twicks69]

Seems like the DNP only has a prevision for (1) 44mm waste gate. Have you ever tried running low boost with only one gate (by low boost I mean 24 to 26 psi). ?

I have had no problems running as low as 15psi with 1 wastegate.

 

[1fastlaser]

On-green performance makes a cast t4 manifold that a 42 fits 700 bucks, rev-hards cast t4manifold 200 bucks on ebay also is another one that fits. I acually am pretty sure dnps also. Heres a nice little post for you with pictures ever wonder if a GT42 will fit a revhard? - DSMtalk Forums

Another 10 second "newbie." - DSMtalk Forums

 

[90laserRSfwd]

Thanks for the link to the pictures.

 

[99gst_racer]

FYI: If you're still looking, check this out: http://www.jhracing.net/Twin_Scroll_T4.html

 

[1992awdlaser]

DNP and the cast ERL manifold will fit. I know with the DNP you won't even need to dent the water pipe.

 

[wishihadatalon]

FYI: If you're still looking, check this out: T4 Divided Exhaust Manifold 4G63 GT42R / GT40R

Holy finally I can't tell you how many times I emailed and pmed him without a response. I did see one on Dean's auto awd and I really liked it. I might just have to sell my un-used dnp and get one.

 

[90laserRSfwd]

Sell your un-used DNP divided T4 huh??

 

[wishihadatalon]

Sell your un-used DNP divided T4 huh??

If the price was right, then sure

 

[desolateboosted]

Modern Automotive Performance :: DSM :: Exhaust :: Exhaust Manifolds and O2 Housings :: DN Performance :: DN Performance T4 Exhaust Manifold w/ 44mm W/G flange DSM

and

Modern Automotive Performance  :: DSM  :: Exhaust  :: Exhaust Manifolds and O2 Housings  :: Dark Performance T4 Turbo Manilfold (DSM)

 

[topstreet]

Holy finally I can't tell you how many times I emailed and pmed him without a response. I did see one on Dean's auto awd and I really liked it. I might just have to sell my un-used dnp and get one.

Sorry Man!!

I have been trying to put the finances together to get this thing kicked off. I did not want to start making promisses I couldnt keep, basically. I hope you understand.

Just to let you know. I have 6 complete including a top mount (but this still needs to be test fit). I am working on 5 new designs and have reordered matierials to make another 20 total, of these different designs.

I am much more on top of things then I was in the past. If you are still interested in shooting me an email, Please do...

Jake H

[email protected]

 

[wishihadatalon]

Sorry Man!!

I have been trying to put the finances together to get this thing kicked off. I did not want to start making promisses I couldnt keep, basically. I hope you understand.

Just to let you know. I have 6 complete including a top mount (but this still needs to be test fit). I am working on 5 new designs and have reordered matierials to make another 20 total, of these different designs.

I am much more on top of things then I was in the past. If you are still interested in shooting me an email, Please do...

Jake H

[email protected]

It's cool, it was around the time you were selling off your drivetrain, so I was uncertain about you still being the DSM game. Glad to see you are still around.

 

[topstreet]

FYI: If you're still looking, check this out: T4 Divided Exhaust Manifold 4G63 GT42R / GT40R

The one thing that I didn't mention, that I figured I should is that... I have the exact same turbo placement as the DNP54 does. If that helps anybody.

also...

02-08-2008 08:06 PM
90laserRSfwd

Seems like the DNP only has a prevision for (1) 44mm waste gate. Have you ever tried running low boost with only one gate (by low boost I mean 24 to 26 psi). ?

You can definitely get lower boost levels with a single Tial 44mm, but the question is do you want to. The entire idea of a divided turbo/manifold setup is to be DIVIDED right? So sharing exhaust pulses is going to defeat the effort to some extent.

I have run non divided manifolds with divided turbos, I have run divided manifolds on undivided turbos, I have run divided turbos on divided manifolds (both ways. single and twin wastegates.)

Personally the theory behind the divided stuff (true divided with 2 gates) is a good design. This is what I have run and been the most happy with. From a FAB perspective, the idea of a V-band turbine inlet is exciting to me too. It is just easier and slightly less cluttered in the engine back.

So in my opinion, I would say you should keep a system completely divided, if it is at all divided. Example: If you have a divided 40r and divided manifold, you should run divided wastegates. But if you are running a divided manifold with only a std. t4 inlet... Then you should be fine with a single wastegate, but you may consider welding the wastegate inlet to the turbine housing and not the manifold. This would "feed" the wastegate the best.

Just remember that theory only takes this topic so far. There are people currently making good power on things that by theory, should not make as much.

Just tossing in the 2 pennies. Hopefully that is helpful to you guys.

Jake Hanhardt

 

[90laserRSfwd]

This thread went MIA for a while, maybe my fault. Thanks to everyone that replied. I've since sold my gt42 and put the car on the back burner for a while, do to a work related injury.

 

[andy4g63]

Also check this link:
dividedhousing
Ryan Woon's supra made over 1250WHP with a single Tial-44. I just spoke with TIAL recently and the only reson people are having issues with boost control, even with a WG flange coming off the collector is the design of most manifolds on the market:

In most cases WG tube comes off at a 90* angle from collector/Fuul-Race; Shearer T3;etc./ I have ERL cast mani on my car and WG tube is pointing up and then right/facing the car/. That is why some times boost is a little out of control. Even the flange is big enough, main flow moves easier toward the turbine wheel instead going to WG. In moost caes you get a little more boost in fourth gear than in third. It is understandable that most of the manifolds are made with a lot of fitment in mind/radiator, fans, power steering/. But that is the reality. Good luck.

 

[topstreet]

The more boost you are running, the less wastegate you need. The wastegate is simply a "turbine wheel bypass". When you are bypassing less, you need it less. So... Your not going to make 1200+ hp without a ton of boost. I have personally experienced enough flow to limit boost with tuning alone. Meaning, we sent boost to the top of the wastegate to help keep the valve closed, and couldn't get more. I hooked it up the right way again and started dialing the tune leaner, and with a hair more timing. It was only then that I could get the boost above 42 psi.

Andy4g63- You are right about the wastegate placement in theory. The idea is to make it as easy (or easier) for the exhaust to flow through the wastegate, as it does through the turbo. Having a tube that comes off against flow, is relying on manifold back pressure INSTEAD of flow. This is a "ideal" way to set it up, but it is very many times the only practical one. I have heard of Indy cars running entire exhaust banks to the wastegate alone!... A "H-pipe" of some sort in the system would allow it to be nearly a 0 pressure exhaust system. It is only at this point that the "optimal design" could come into play.

Also, a quick note about o pressure exhaust systems... You want to keep some back pressure in the system to keep the hot components from over cooling and cracking. Example: If poorly designed manifolds crack, it is many times by the WG. If the dump tube has too short of a total length, it will allow cooler air to come in contact with the hot wastegate. The manifold is expanded and the metal is in a more ductile state. If you add cool air to the equation, you can burn out WG valves or crack the header. This is also the reason that V8 guys wont run a motor on a stand with out some type of header.

Sorry if there is anything that I forgot to mention, or if anything was unclear. Please let me know if it was.

Jake Hanhardt

 

[codeofdastreets]

Has anyone tried the punishment t4 manifold with a 42r style turbo yet?