epion2985

a few questions here.



1. if you have a single T setup and putting out 400 hp as a resolt, then if you take a twin setup each putting out 200 hp so total 400hp, wouldn't the twin be better because the two turbos are smaller then the one big one so they will spool alot faster but produce same hp as the big one. Is my reasoning correct?



2. how much more does a turbo with a ceramic turbine costs vs one that makes same power but with a matal turbine.



3. how much faster does a ceramic turbine spool and is it worth the cost?

rx7machine

1. yes

epion2985

thanks



# 2, and 3 staill stand. Anyone?



Also add #4: if the answer to #1 is yes then why does everyone want to go single on here???? why not just get wtwins with same power output. The cost of going single is huge. Why not just buy twins with output of a large single one?

9Second7

Everyone has their own opinions and what they like. You can get great low end only go so far with twins and top end hp, as for a large single turbo you degrade you low end for some serious top end power !!!!

qwester007

1- Not in an FD. The plumbing is too difficult. It makes twins un-efficient resulting in more heat and less power.



2- Not sure



3- Doesn't spool any faster. Better with heat.

epion2985

ceramic turbine should spoor faster, its much lighter then a stell one.

epion2985

also since heat is such a problem in turbos why hasnt anyone done something more effective then water and oil cooling for it. Why not put a little fridge compressor, put it in the back and line 2 1/2 cm D copper flexible tubes on the bottom to the front where they will spary in to a cooling jacket of the turbo (I dont know how it looks ina turbo but basicaly where water would go in a water cooled turbo). at -40C idle it can really bring turbo tems under controll. And it would weigh nothing. Sounds really good in theory.

j9fd3s

the problem with the twins is that they are too restrictive, they have too much back pressure. and they also make a lot of heat that takes its toll on everything else. plus its complicated, and had an uneven power delivery



mike

rx7machine

I myself will probably stick with the twins a while before I switch and that's if I switch to single..

jspecracer7

I myself couldn't wait to go single turbo. 400 rwhp and more heat/less reliability/higher boost or 400 rwhp and less heat/more reliability/less boost...do the math