400bhp Mission

[ZAB]

Hi there guys first all i am a proud owner of a fd again a non running fd lol,

was cheap as i could get it £1,000 96 type-r also came along with sum nice mazdaspeed leathers, nur spec, dumpy and rimz.

ok so my aim is around 400bhp mark, i have few parts from my old fd hears i list

*koya rad
*apexi gt intercooler
*sard 280ph fuel pump
*850cc injectors (i think i still have sumwer)
*power f.c with commander
*most the pullys are replaced
*re short shifter
*re ast tank


thats all can think off at the moment,

i also have my old block wich was rebuild about 2-3k ago my plans are to rebuild it and get a street port done stick set of bnr stage 3 turbos .

can u guys advise, recomend, what u\'r thoughts are how i can meet my target :Giggle

most of all i want reliability go with the power wich is a hard one :Giggle so what would u guys say about tips and seals ?

thanks for any info/help givin

regards

zab

[Hammer]

Get the motor built with whatever kit the builder uses, for 400bhp it doesnt matter which one it is.
 
Do you really want to go with BNR turbos??  you still have the problems the rats nest will cause, unless you renew all the solenoids ect.
 
I would go single, T04E or T04S or a GT35R

[Rex_FTW]

Go single it will save you a lot of grief and is better... won\'t be as packed less heat issues etc

[ZAB]

mmmmmmm like the twins but then i\'v not been in a single rx before unless sumone wants take me out for a blast :Thumbs-up so i can make my mind up:rolleyes::Giggle  am mainly gonna be using the car for street use i\'d like the low boost, i also have a celica gt4 sooo ....\'z me off trying get away lol dont make boost still 3k 3.5k

guess il need to do sum searching on turbos

the other thing is that the bnr are in the price range if i wanted to go single i\'d have to get the rexy up and running then next year get a single.:burnout

most likly pipe will be doing the work

[ZAB]

What About The Apexi Rx6 Turbo Kit

[ZAB]

then again u get the bnr non sque set up to, know off anyone thats running the set up like that

[Hammer]

The whole point of running twins is for the sequential set-up.
 
If you run BNR\'s non-seq then you might aswell go single.  Lot less hassle, looks better and runs better.

[trotter]

The whole point of running twins is for the sequential set-up.
 
If you run BNR\'s non-seq then you might aswell go single.  Lot less hassle, looks better and runs better.

^^this

[suba]

What are you going to use the car for?  it\'ll make a big difference to the spec.:Thumbs-up

[Aubec]

BNR\'s are likely to be more expensive than a smallish single...

[suba]

Why on earth do you think that?

a set of BNR\'s = About £1600
A decent single turbo kit with wastegate and manifold = £2500 (then you have to mess about with the loom etc.)

having run sequential BNR\'s and now moving to a single I\'ll be able to comment  on the two setups soon.

I will say this though - The BNRs running sequentially had a far more laboured transition than the stock twins, on track they were pretty annoying in slower corners.  The response when dropping below 4,000 rpm was like running a big single... if I was still using them I would have gone non-sequential without hesitation.

[ZAB]

WHAT single turbo are you going for mate ? what are you going to do with the bnr\'s mate ?

what u mean under 4,000rpm not much boost ? whats ur review on the bnr\'s mate ?

mostly going to use the car for street use and quater mile time to time wen i go to shows.

yeh wer do you get the bnr are more money to buy lol? i\'d be saving min 1k with the bnr\'s

[suba]

I\'ll be using a T04S.  My BNR\'s were sold a while back.

In Summary - for street or 1/4\'s the BNR\'s are great, on track they were a pain - couple this with the heat buildup from the twins and going to a single was a no brainer.

I had to add a restrictor to a vacuum line to get the primary to boost over 0.6 bar - the transition then lasted 400rpm, which is fine if you are flooring it from 2,000 rpm - you get a nice kick at 4,300 from the secondary.

Here is where they are poor - let\'s say you are braking from 6,000 rpm, then you exit a corner at 3,500 rpm.  You will not drop back to the primary (the same is true of the stock twins) which means you are on 0.5 bar until 4,000 rpm or so - you might as well be running a T51 in terms of response, and it is not always possible to drop down a gear.

I\'d would run them non-sequential for that kind of use anyday of the week...if this is the case then why not a single....a second hand single turbo kit and wastegate will work out about the same cost.  Any issues with the turbo then you can remove it in 10 mins and go for a re-furb, AND you get to ditch the rat\'s nest.  

If you ever sell the car a single turbo rex is also worth a lot more than one running twins.

As I said I can give a full review of BNR\'s Vs. Small / medium single when my car is up and running...

In Summary:

1.  Street / everyday / occasional drag car on stock ports for 400bhp ish at the fly - BNR\'s running sequentially

2.  Track day / fun car / 440 flywheel power+= Single.

[kompactor]

Once you go single you never go back.

You can start with a fast spooling single, which will easily push you over 400BHP. Rx6, GT35r, T60-1 or one of the medium sized triple ceramic ball bearing turbo\'s by Comp Turbo are all good choices and will spool just as fast or faster then BNR\'s non sequential and make more power.

Later you will probably desire something bigger and will need to look for a 70+ mm inducer turbo to take you into the next level and into the 500 club

[ZAB]

MMM OK what kinda rpm will the single turbos make boost ? sumthing same line the twins ?

as i mentiond i dont want to be pulling away in second and have lagg up till 3500rpm that\'s just noo good for street use as soon u make boost u ether run outa road or u have to break lol.

think its gonna be rebuild with with a streetport in the mean time while i decide on a turbo.

true about going single give u a lil extra value on to the rexy.

always wanted a apexi rx6 turbo on my last rexy.

regards to tips and seals is there any point going better for reliability and peace of mind or at that power wont make a diffrence ?

as i hear thats 3motors that have pop\'d this month on the foarm with as lil as 1100 miles!!!!:(