We are now in the process of making 347SS investment cast BorgWarner EFR IWG Rx7 turbo manifolds. These will suite the 7670, 8374, & 9180 T4 IWG turbochargers on the FD3S 93-2002 Chassis, both LHD & RHD . Twin Exhaust gas temperature, or exhaust manifold back-pressure bungs are also cast into both runners. All threaded portions are being rolled before the entire manifold is heat treated. The entrance to the runners are the same inner diameter as the exhaust sleeves, and taper as their reach the T4 flange. This process is not possible with your traditional welded turbo manifold. These will out last and out perform our current welded design. Lifetime warranty for original purchaser also! We should have the first 5 samples in 7 more weeks, then shortly after 30+ manifolds. There is no longer ANY reason to pay someone else to make a copy of our current welded design.

Please bare with us as this is the first group buy we have ever done. Also note we do NOT have a concrete time-frame in place for receiving these. Please do not enter into this group buy if you are not 100% committed to following through. If you want a full kit we can obviously put you down on the list, as we are also in the process of mass producing our IWG turbo systems and by the time these are done will have 30+ worth of full turbo kits in stock ready to ship.

Here is the pricing for just the turbo manifolds per the group buy. We will also knock x2 this amount off per full kit for the group buy( $200 off per 10, $400 for 20, $600 for 30)

Bare manifold group buy pricing only( includes freight in lower 48 states)
1-10 $700
11-20 $600
21-30 $500

Full details for the turbo kit are here;

BorgWarner EFR IWG FD3S Turbo System

We will be updating our blog soon to reflect a better collection of information including all the dynos charts and comparisons etc.

 

sexy!

 

1. monkman33

 

I'm not interested in the group buy on the short term - but I am VERY interested this as an option down the road once (if?) I grow tired of my sequential setup. The BW IWG is at the top of my list for single turbos and a cast manifold would make the kit even sweeter.

Kudos for you guys stepping up with a product like this.

 

Will you also offer a downpipe to mate with this setup?

 

My assumption is that the manifold would be interchangeable with the current welded manifolds, and allow for retaining the same downpipe. Otherwise, they would have to make twice the jigs and have double the number of different downpipes for these kits.

 

Pretty sweet, and I'd be interested—although if you're getting in the investment casting business, how about a v-band IWG hotside and matching v-band manifold! :-)

THAT would be the ultimate.

 

As mentioned these are interchangeable with our current welded design. We have compelte kits and downpipes to mate with these units.

Next up for casting are our long runner units.

 

ptrhahn

Pretty sweet, and I'd be interested—although if you're getting in the investment casting business, how about a v-band IWG hotside and matching v-band manifold! :-)

THAT would be the ultimate.

If you are looking for ultimate durability at the track you could mill the outside of the flanges down (need the length, so can't cut them off) and weld the cast stainless manifold to the cast stainless turbo exhaust housing like on the EFR 9180 Indy engines.

 

that is WAY cool

 

Just about sick of fly-cutting fabricated flanges already, so might consider a complete turbo swap...and one of these. Not a big fan of the bung locations, like them on the side of the runners too.

 

347SS tapered investment cast EFR IWG Rx7 turbo manifold

 

Elliot, would this manifold work with other turbos?
Say a 4094R with a 1.06 hotside?

 

These will only fit the iwg efr. Up next we will do our standard FD t4 ewg manifold in same style. That is a few months out.

 

How many deposits are you up to?

 

What are the benefits of this over the tubular? I know they are supposed to be more reliable long term which is huge, but other than that??? please enlighten me. Thanks!

 

Smoothest possible transition.

 

Yeah, to get a good transition on a tubular manifold you have to make each tube out of 2 clamshelled pieces welded together lengthwise

Its a huge pain and the only tubular manifold I have seen do this is the old version HKS T04Z manifold (before they went undivided V-band turbo inlet).




Turblown These will only fit the iwg efr. Up next we will do our standard FD t4 ewg manifold in same style. That is a few months out.

Very cool! It is so awesome to see vendors still developing high end parts for this chassis.

 

4 now, and calls every 8 hours on it. I would be shocked if we are not in the 20+ range. We sell 8 of the welded manifolds a month!

We have 15 weeks roughly until this group buy is over.

 

Reliability ; no welds to crack, 347SS construction, extra bracing in critical areas

Cost; these are cheaper than our welded units. We charge $900 for the welded unit with the additional bungs( $99 extra)

Stock; we should always have these in stock for zero wait time once GB is over

Performance; no distributions to the transition of the manifold, even welded units where the pipes are center over each unit( which ours are) there will still be some sort of change, especially if the weld penetrates all the way through( which ours usually do). Our current welded units are 1.5" schedule 10 pipe, there is a fast transitions at the outlet of the exhaust sleeve down to the ID of the welded manifold. This is not ideal, but one simply does not have a choice with PIPE or tubing. If you use the bigger pipe you have to cut it down as mentioned above when you meet the T4 transition. The T4 transition is about the exact same size as the 1.5" pipe. So instead of an abrupt transition at the engine flange, the new cast units gradually taper as they reach the T4 flange. This is exact like the Turbine housings. This manifold will out perform the welded version.

 

Very interesting product
Definitely participating to this GB

 

5 deposits

 

I'm super interested in this. I just have some questions about the payment methods..

What is the total price for a full 8374 kit?

The deposit is $400 through turbosource.com? Even for a full kit?

We have 15 months before final payment is due?

 

15 weeks, not months !

I am going to double check on the timeline next week. Also to be clear we have already paid for these manifolds, and they will 100 percent be delievered.

Yes only $400 desposit for the full kit too. If you dont want to wait the 15 weeks and our first batch of 5 are good to go we can move you up( we intend to sell all manifolds as soon as we confrim they are good). However to move you up you have to pay at the first tier of gb discount.

Full 8374 kit pricing in the 1 to 10 range is $4300, 10 to 20 $4100, 20 to 30 $3900.

 

weeks....months...what's the difference with these cars?

All right, I'm in. Deposit sent. I do have a couple more concerns that I will just post here in case others are wondering the same thing..When checking out on the turbosource website it wouldn't let me use a shipping address that is different from the billing address. Idk how much power you have over the website but is there a way to make it so someone doesn't accidentally send my stuff to my billing address (pm me for the order details if this is possible)? I'd prefer to just pick up the parts rather than shipping, but I understand if you don't want to do that either. Lastly, if it comes down to the 15th week and I don't have all the money for the full kit, I assume I can simply pay the remainder for just the manifold and we will be good? Thanks for the help!