Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: Tiger_kpt on September 18, 2007, 10:05:22 AM

Title: Uprated Twin Turbocharger Packs.
Post by: Tiger_kpt on September 18, 2007, 10:05:22 AM
OK... question is simple really. Heard alot about Knightsports and BNR uprated/upgraded/high flow performance twin turbocharger packs suitable for my 1993 RX7 FD.

But... where can I actually get them from? How much would I be looking at new? Second hand?

Are there any other companies out there apart from Knightsports and BNR worldwide that can supply them?

Finally... are there any UK companies that will take a second hand set of stock OE turbochargers and high flow them/upgrade them/uprate them to a Stage 3 spec?

Thanks all.
Title: Uprated Twin Turbocharger Packs.
Post by: imebgo on September 18, 2007, 01:38:36 PM
WGT Do High flow turbos (according to their website.)

http://www.wgtautodevelopments.co.uk/

James
Title: Uprated Twin Turbocharger Packs.
Post by: Lum on September 18, 2007, 05:55:50 PM
A set often pop up on yahoo auctions japan mate!
Title: Uprated Twin Turbocharger Packs.
Post by: lee mills on September 18, 2007, 06:21:57 PM
recieved my knightsports rf420s direct from knightsports last week. cost me 1500 squid which was inclusive of them sourcing a donor set of turbos from japan and delivery. it took 10 days from point of order to reach my doorstep. got caught for duty on them:2Mad this was £288 .
Hope this helps
Lee
Title: Uprated Twin Turbocharger Packs.
Post by: Tiknam on September 18, 2007, 11:10:35 PM
Knightsports offers the best one on the market RF420. They uprated the compressor housings and turbine blades. Then balanced in house using their balancing machine. So its a pretty much of the shelf stuff that you can just bolt it on when you got it.
Title: Uprated Twin Turbocharger Packs.
Post by: John_Hudson on September 19, 2007, 09:43:22 PM
my KS rf420\'s are the bo**ocks :D
Title: Uprated Twin Turbocharger Packs.
Post by: skybusr34 on September 19, 2007, 10:52:13 PM
if i decide to do another rex i`ll be going down this route.
Title: Uprated Twin Turbocharger Packs.
Post by: chrisJDM on September 19, 2007, 11:46:00 PM
what difference do they make? what power gains do you get over standard? can you eliminate much of that soddin rats nest with them? lol
Title: Uprated Twin Turbocharger Packs.
Post by: Draco on September 20, 2007, 01:57:32 PM
that wouild depend if you go non seqential or not
Title: Uprated Twin Turbocharger Packs.
Post by: chrisJDM on September 20, 2007, 07:14:15 PM
what difference would it make over stock twins if u did or didnt go non sequential??
Title: Uprated Twin Turbocharger Packs.
Post by: Rixio on September 20, 2007, 09:23:03 PM
I think its kinda useless to go uprated twins and then go non sequential but hey ho thats just me...
Title: Uprated Twin Turbocharger Packs.
Post by: antnicuk on September 20, 2007, 09:31:39 PM
Quote from: RixioI think its kinda useless to go uprated twins and then go non sequential but hey ho thats just me...



I agree, but then saying that John Hudson got some really good figures and went non sequential, so it worked out a cheap and very easy way of getting small single turbo power figures.

I have had large and small singles on several cars and now gone back to a set of high flow sequent twins with the right mods on my FD, 300 atw\'s on 0.9 bar and the best bit is its nice and quiet and no drone  !!!  Its so much better on the track!
Title: Uprated Twin Turbocharger Packs.
Post by: CharlieP on September 21, 2007, 07:40:32 AM
When i went to super 7 autos, they said they can improve your standard turbos, I\'m guess with porting kinda work
Title: Uprated Twin Turbocharger Packs.
Post by: Rixio on September 21, 2007, 05:02:06 PM
But at the cost of uprated twins your still talking single money when done propperly...it will be good to see my BNR\'s (seq) compare with the KS twins (non s/q)
Title: Uprated Twin Turbocharger Packs.
Post by: John_Hudson on September 21, 2007, 05:05:28 PM
what power are you getting from the BNR\'s
Title: Uprated Twin Turbocharger Packs.
Post by: Rixio on September 21, 2007, 05:33:46 PM
Dono, its not mapped yet...still running in. Should be getting mapped some time next week all being well

I can see mid 300\'s to high at around 0.9b to 1b.

BUT nobody has yet dyno\'d BNR\'s in the uk yet, so have no idea...im just going on what Steve over at Gotham is predicting...
Title: Uprated Twin Turbocharger Packs.
Post by: shaunwil on September 21, 2007, 10:49:53 PM
who\'s doing the dyno work on the car ?

Looking interesting....

Shaun
Title: Uprated Twin Turbocharger Packs.
Post by: Rixio on September 21, 2007, 10:51:50 PM
Dono i doubt we are gona get decent weather no to be able to map it otr, so was thinking of using Thor and Carl mapping...your more than welcome to come down & watch Shaun...
Title: Uprated Twin Turbocharger Packs.
Post by: Hayward North on September 21, 2007, 11:25:57 PM
Quote from: RixioDono i doubt we are gona get decent weather no to be able to map it otr, so was thinking of using Thor and Carl mapping...your more than welcome to come down & watch Shaun...

Gimme a shout if there is a seat available :), you know the route im going so would be interesting to see.