what do we think of these twin up-pipes? for confusion i am not talking about twin scroll but a twqin up-pipe for a single scroll turbo like a vf45 20g etc i have had harveys headers and up-pipe before but was just wondering on these? they split in two between either end

Grant

 

here is it Twin scroll Up pipe with headers



OEM Twin scroll




Single scroll




Twin scroll is only found on JDM V8 onwards on UK STi is only Single scroll.


Jura

 

Yes you can convert your 20G to twin scroll,but if its worth,not sure...
Twin scroll turbos are expensive than Single scroll,for converting your car to twin scroll this will cost you little bit more than if you will buy nice 20G.


Jura

 

Hi Jura.
i knew this would get taken the wrong way, not converting any turbo nor the headers
standard style and position headers and turbo
UP-PIPE for single scroll but splits in to two pipes in the middle flanges are the same.

something like this a few people do them simms and so on ment to be good eg flow

 

Not sure about this Up pipe,but single will have still better flow than two,maybe someone will disagree and prove i'm wrong,but not sure


Jura

 

also was wondering about ceramic coating is this enough for heat dissipation or would you have to dei wrap as well as ceramic coating is, it more for strength? dont know much about ceramic coating lol

Grant

 

Interesting to look at but unless I am very much mistaken this will be a good way to reduce performance over a single well chosen uppipe.
Let's have feedback from anyone that has done back to back testing. Where is 1 bar in 4th gear on a level road?

 

Are you sure this isn't a way to put a single scroll turbo on jdm twinscroll headers as that's how it looks to me

 

thanks for some input Harvey, bought a full set of headers and up-pipe from you before a couple of years back as was very impressed.

was just interested in comments and info on these from anyone who had one fitted? i believe simms do them and a few people run them, and maybe japspeed do one?

as for performance i also would think splitting the flow would decrease performance but i am no expert lol, but if these is no benefit at all and only a performance drop then why are people selling them lol, i know thats not a good example but you know what i mean.

Grant

 

no daz they are for 2001-2006 say single scroll, i am just curious thats all

Grant

 

Isn't that a way of firring a ( LARGER ? ) non-dual scroll turbo to a DS set-up ?

dunx

 

Some more info for you.
The purpose of ceramic coating is to act as a heat barrier, just like exhaust wrap. Its purpoe is to keep heat (or cold in) or heat (or cold) out. Thermal barrier. Turbo exhaust housings are a good example.
Never ceramic coat and then heat wrap on top. Heat retention is to much and the flaking of the ceramic coat will take place much sooner. On some surfaces, particularly stainless steel, ceramic coating will flake in time with the continual heat cycling expansion and contraction.
About 7 years ago before ceramic coating became a must have item I went on to ceramic coating for a period of about 18mths/2 years and then reverted to heat wrapping and DEI in particular. Similar thermal retention, far cheaper, more cost effective and done properly, just as durable.

 

dont look like anyone coming forward with info then?

think theres a set of the syms ones with twin up for sale in for sale section used to be mad hammers?
i have seen pictures of them