I see replacement manifolds all over for use with T4 flange products has anyone seen a SS replacement for use with stock twins?

 

Always wondered that as well... Hmm?

 

Never been done as far as I know. IIRC, somebody claimed they had done it, but never produced pictures to back it up. If you're wanting the durability, ceramic coating the stock manifold is about the best option to go with.

 

what's the point?

 

Strength and weight?

 

Strength ,weight and better flow .I have and idea to make one and have ask Pit Bull to loan me an old manifold to make my patterns from. he will bring me one soon . The main reason for me is better flow than I get with my Rich Mans non seq modification .

 

that would be awesome, David, I'd definitely be interested

and my "rich man's non-sequential" is still going strong

 

David,

This type of thing would be for non-sequential only, true? The stock manifold has a turbo control door in it, and you'd need to replicate that if you intend to run the stock sequential setup.

Dave

 

Yes it will be for non seq only . I have figured out how to make the welding jig adjustable so the stock fit will be the same for the new manifold and adjustable for the thicker one I will need for the one and only set of super sized BNRs that I have .With the stock manifold I use a SS spacer plate so the intake houseings will clear the LIM. The only detail not worked out is picking the inside diameter of the balance tube so the ported wastgate will bleed enough to work correctly .I do not think the stock manifold can be reshaped to do as well for a reasonable amount of money .The Rich mans mod does alot of work on the part but the shape is not as good as it should be .To get it there would require several pounds of welding rod at $ 50 per pound , and tons of labor .One requirement for the manifold for me is that it is a direct replacement because all my hard pipes that I have custom made .I do not have time and money to replace them . I really like the BNRs and I think the time to do this is well worth the returns .The Rich Mans mod ,15 hours plus if there are alot of cracks to repair , has turned out to be a nice improvement .With a better flowing manifold and the Rich mans mod , the want for a single turbo will not be a question . I am satisfied with the system as is but with a better manifold the response should be way more fun .

 

i mean no offense, but this seems like a lot of work/time/money to put into non-sequential twins.
i could maybe understand if you wanted to use the BNR twins non-sequentially for some reason, but other than that, why?

 

This thread comes up about every 6 months. Someone needs to hurry up and make this happen.

 

It's just not meant to be, dude. Nobody (I understand some people do, but not many) wants or needs one, so it doesn't get made.

 

that hasn't stopped David before

 

More power to him. It's the people that go and make their own parts and get their hands dirty that keep me inspired and interested.

What I meant is I can't see a company offering these.

 

^yeah, especially at a reasonable cost. the stock manifold works well enough with BNRs or even stock turbos to put down good power. i don't grasp what the benefit would be that could justify the cost of doing this.

 

From one of the older posts on this, I think I remember somebody mentioning that it'd give you the benefit of being able to incorporate an external wastegate also?

 

I do not have plans a external wastegate .If any one who does not understand where the benefit come from then they should look at the stock manifold and turbos together then you will see .

 

I have a seq. Mani if anyone is willing to do this and needs a donor.

 

I think that once you clear out the sequential guts that the stock mani isn't really the flow bottleneck it once was. That's the whole POINT of going nonsequential. It's not like it grows your turbos any.

Now, if somebody COULD build a higher flow SEQUENTIAL manifold, THEN you'd have something. That's where it would really count.

There really isn't much of a strength issue with the stock. I know the crack with heat, but the don't really fail. I'd think a stainless tubular thing would be moe likely to. The weight savings would be nice, but really, there are a lot of more efficient ways to save a few pounds.