Advantages of 2001 Twin Turbos over 1992 model Twin Turbos. What advantages would i get upgrading???? is it worth doing??
There is no Advantage.
You need 2001 RZ turbo\'s or Spirit (from memory) and i don\'t have to tell you there rare, once you have a set you are still limited by the Bearings (they need 360 bearings to run over 1bar) the only Advantage is they run slightly more power at the same Psi of boost.
If you are thinking of Upgrading the Twins find your self a set of BNR stage 3\'s and you\'ll be very happy. (well apart from the Price ;))
The later model turbo\'s were a different model to the early units.
They changed the vein design to allow for the higher boost (from 10-8-10, to 12-10-12) along with the ECU change.
Fish
I have a very late set of turbos fitted to my FD at the moment and there is little to no diffrence in them, I have not got them Smoking yet so its possable to seals are better but without 360 bearings they won\'t be going over 1 bar.
Don\'t get the late RZ mixed up with the Standard Fd Turbo\'s becouse they where Bigger.
The BNRs are $200 cheaper than a new set of 99 spec turbos, I know, I\'m buying some!
I\'m lead to believe that 99 spec turbos had uprated internals and this together with ECU mods that meant 280 BHP was offered on the later models
Grizzly you are quite correct regarding the 360 degree bearing. Hence the BNRs. I am looking forward to getting them fitted, I\'ll be sure to post a report. I\'m going to run them as god intended...sequentially.
i know of somebody who has a 99 plate fd and hes talking about converting them to non sequential and says \'You can run almost twice the boost according to this guy i was talking to in america. They max out at around 400rwhp\' is he talking out his ass? or is this true??
ays
See what Warthog was putting out on twin turbos (before he went single), I believe he was over 400rwhp (it was monster what ever it was). I know of a car doing 370rwhp on twins.
Its all irrelevant really. If you want cheap monster HP, and you crave a drap car go single turbo. If you are going non sequential by a single turbo. It will liberate more hp non sequentially I believe (Carl Hayward does it I believe).
At the end of the day what sort of car do you want? For driveability you can not beat twins. For monster BHP you can\'t beat single turbos. I may be simplifying, but I\'m a simple man. Decide what you want and then start saving!
I think i might just save up and go single :p
im in the middle of going single just transfered paypal$$$$$$$$$$$$$$$
The 99 spec turbo\'s up to 2002 have a few changes in them that mean that they are more efficient.
The turbines have one less blade on them,and this means they flow more exhaust gas.
The compressor and housings are a much tighter tolerance which means a more efficient operation,as they do not heat the air as much.
It is quite noticeable that there is a difference in my opinion.
Regards
Carl
Quote from: GrizzlyThere is no Advantage.
You need 2001 RZ turbo\'s or Spirit (from memory) and i don\'t have to tell you there rare, once you have a set you are still limited by the Bearings (they need 360 bearings to run over 1bar) the only Advantage is they run slightly more power at the same Psi of boost.
If you are thinking of Upgrading the Twins find your self a set of BNR stage 3\'s and you\'ll be very happy. (well apart from the Price ;))
BNR stage 3s? yes i sound stupid but who does them and where can i see the spec of them as well. Iv actually bought a set of 99 spec turbos with the y pipe and yeh your right they are pretty pointless lol but theyl do if you like a smooth boost response. but yes i am bord need more power!!!
its ok just answred my own question RX7store.net. hmmm.....do they fit the stock manifold? opinions on these? anyone had them yet? and last of all what power can they handle on the non sequentials?
http://www.rx7store.net/product_p/bnr%20stage%203%20fd.htm
Yeh they go on a stock Manifold and can be set up Seq or none seq.
BNR have there own web site too but for the life of me i can\'t find it at the moment.
yeh nice one. are they actually any gud? has any one had em on in the UK. only reason im stickin to twins is because not that many ppl do. wana prove its a gud 1....plus wana keep my greddy fmic rather than modifyin it or buyin a new one :-)
Basicly this is where they fall down, The Uprated twins are realy good if you like the feel of the stock twins but want more power, BUT!! for the same money or a little more you can get a decent Single kit which will get rid of alot of the stuff that causes problems on a Third Gen.
So Even though the BNR\'s are very good and you can get good power from them people go the single route to keep it simple and get some extra space, Plus the more the power goes up the more you will have problems in the Wet with the second turbo spooling up and making you face the wrong way ;) the Single Turbo\'s tend to be alot Smoother and Pridictable.
sayin that if you have non sequentials they kick in at the same time. spos it would b easier to map if youv only got one turbo n less parts to repair too so less likely to go rong. iv got the power fc wiv boost control kit wudnt i need to change the boost control kit for another boost controller!?
oh and on the BNR turbos is the downpipe the same?
What about turbo technics high flow twins. What power could you get out of them with the right setup.
The website for BNR is http://www.bnrturbos.com/.
I\'d agree with the grizzler regardinging twins verses single. It\'s really what you like. I\'ve gone the BNR route because I love the kick of the second turbo and I think that twins turbos are part of what makes an RX7 suh a top car. I wanted more power but I\'m not after a 500bhp drag car. I believe that diveability is better with the twins (but thats a moot point). I also just wanted to be different.
Bang for buck, go single, but I reckon 99 spec twins or the BNRs with the right mods will give good power increases. I\'ve opted for 1300cc secondary injectors (which can be purchased from the RX7 store for £300 for the pair). Again if you want monster bhp, you\'d buy a new fuel rail and 1600cc injectors, it all depends what you want from your car.
well fuelling wise i have at hand a beautiful HKS AIC controller with 4 injector harnesses!! they are running that on there matt balck 800break jobber!!
To be honest i dont need it, i wana get rid. So if anyone interested i have one to sell make me an offer and it can be yours this week.
I agree wiv twins makin the rx7 an RX7! plus boost times will be quicker rather than such a build before the kick.
I also forgot to mention that when you order BNRs you need to send your down pipe, so it can be modded for the new turbos. You send your old turbos to BNR as they reuse the \'cores\'. Other than that they are brand new.
Y pipe, not down pipe.
oh yeh or you could just buy the efini 99 spec y-pipe cus that apparently works with it. so assume the downpipe is still the same and can fit as regular?
ah yes also need to buy performance cat Right now. So who do i go for that. My car is still off the road. Im going to buy the apex seals, oil rings etc etc myself but decent stuff preferably mazdaspeed cus i checkd on all there stuff and they do 3mm carbon ceramic apex seals which seams reliable.
theres nothing wrong with stock mazda....what setup exactly are you planning on running?
BNR twins preferable. Hopefully run around 400rwhp i reckon. which should be gud on the twins if all in doubt i\'ll go with single. but i wana build it more for street/track so it can take a bit of stick. its got cusco 4-point roll cage, hks coilovers, mazdaspeed strut buyin anti-roll bars for it soon. il get some pics on soon.
Just takin ideas.
i wana make my engine fault proof. so ther is no messin about done and dusted then jus ready for playin with
i dont really think you NEED to fork out on mazdaspeed ceramic 3 piece apex seals! Not to say they wont do the job, but IMO its slightly overkill. Why not look aout heer or ask a few of the boys with higher powered cars what apex seals they are running....i highly doubt many of them are running those 3mm ceramics though!
no...im jus at work n lookin into it more. Seams to me like majority of people use 2mm dual spring ceramic apex seals help for better clearance.
I found a website, well company in US, that do a master rebuild kit and explain a lot of crap.
$1289 fopr the pasts and has a chart of what you would get plus explainin whats gud and wots not.
check it if you havent seen it already.
//www.rotorsportracing.com
Think majority of UK rebuild experts will charge you for parts that they quote UK prices but how many of them get them from uk? labour cost works out not too bad but rebuild parts from MAZDA is pricey.
well as I understand it the 2 piece seals offer better gas sealing than the single piece for pretty obvious reasons.
Also, there are many other companies like RA or atkins, hurley what make apex seals. but crucially none of them have put anywhere near as much r&d into them than mazda has and thats essentially what you are paying for!
your link doesnt work for me, but i cant see 1289 USD buying many mazda parts
yes i see what you are saying....i will look into this a bit further, I want to make sure my car is reliable for daily use with good power behind it.
well my recommendation would be to atleast get mazda oil control ring o-rings and definitely get mazda genuine water seals. Youll have to apprecite that there is a lot of speculation that surrounds all the different manufacturers of seals (a lot of it is biased information as well!) and you\'ll have to take it all into account and make your own decision based on it all.
But all i know is, I went down the genuine mazda route cos theyve been doing it the longest!