93RX7black

It seems I will have to replace the stock turbos soon and was wondering if this was a direct replacement for the stock set up, and what experience anyone has had with these turbos.

MakoRacing

iTrader: (12)

Search young grasshopper

Fortune_Seven

iTrader: (24)

lol

Bryan Jacobs

iTrader: (66)

short answer is no, buy my new twins, lol

Mahjik

iTrader: (1)

It's a direct replacement in the sense that they bolt up to the engine. However, the y-pipe does need to be modified for the turbos (which is also done by Bryan).

93RX7black

Yeah, I guess I was more meaning that it doesn't require thousands of dollars to do like a single turbo, since this is a twin turbo kit and can still be set up sequential I just thought it seems to be the best replacement for the stock setup without having to spend so much more. I would be having Kearney Automotive installing the turbos in capital heights, md. They have given me an estimate for installing the Japanese spec turbos at 600, and didn't know how much of a difference there is in installing the 99 Japanese spec turbos vs the BNR stage 3s.

Mahjik

iTrader: (1)

The install would be the same. No disrespect to Bryan at BNR; but if you are only planning to just replace the turbos and keep them sequential, I would recommend just getting the 99' spec turbos. BNR's are a great alternative for those who live in states with visual inspections and want to go non-seq for single turbo like power.

93RX7black

Any reason you would go with the 99 spec turbos over the stage 3 bnrs? I was reading that the bnrs have stronger impellers and can be rebuild and just sound like they are higher quality, plus I can get them for less $$, thanks for your input.

FearNoPiston

iTrader: (17)

I dont see why anyone would get 99 spec when you could get bnr's regardless of your purpose...either way the bnr's are better even if your not going to use their benefits.

fendamonky

iTrader: (6)

Like Mahjik said, the BNRs will not require any additional modifications to install and run properly.

The perk to BNRs, in my opinion, is that they run great at stock power with a stock setup, but they can also be cranked up to deliver power in the single turbo range if you so desire.

Where abouts in Waldorf are you? I just moved into the area...

moconnor

iTrader: (14)

And the BNRs are rebuildable, whereas the stockers are not.

no_more_rice

If you go with BNRs you will need similar upgrades to single turbo, including ECU (Power FC most likely), larger injectors, fuel pump, big IC, pressure regulator, etc...plus then you have to get it tuned. It might be a little cheaper, but not much. I upgraded all my IC piping and BOV as well when I went to BNRs. The only "stock" item is a heavily modded y-pipe (now flanged).

I should caveat this by saying I'm assuming you want to run more boost. At stock boost levels, the BNRs have no advantage over 99s, plus there is more lag

no_more_rice

99 spec is true "plug and play"....you can even retain the stock ECU or a Pettit ECU

thewird

iTrader: (8)

+1, unless you get 99 spec turbos for really cheap, they are not worth the money. But in reality for the cost of BNR twins, you can save up a little more and just go single while improving your overall reliability. So stock twins or single imo unless you want more power and still need to pass inspections.

thewird

93RX7black

I live in Carrington, my car right now is pretty much completely stock other then a downpipe, and a RB cat-back exhaust system.

no_more_rice

if you plan to stick with near stock boost levels, just get the 99s, they are responsive and boost quick....if you want to go > 12-14 psi get the BNRs

If youre on a tight budget, the answer is simple: 99s. You cannot just bolt on BNRs and run 15-17 psi.

thewird

iTrader: (8)

You can't just bolt on stock or 99 twins and run 12-14 psi either. It's the same situation. 99's are a waste of money since people always want more for them even used. They have no benefit at all as they have no advantage except for the fact they cost more.

There is no noticeable difference in lag between stock and BNR's either.

thewird

no_more_rice

Read what I posted again, I clearly said "near stock" with reference to the 99s (i.e. about 10 psi)

At 10 psi? Bigger compressor wheels.

thewird

iTrader: (8)

The compressors may be bigger but there is no noticeable difference between the 2. I've driven both on my car and on other peoples cars. Unless someone tells you, you can't feel the difference response wise.

thewird

djseven

iTrader: (56)

Dear lord there is mixed info in here. Do not waste money on the 99s. I would take the stock 93s anyday for the price difference. Plus good stock twins can be had for about $250.00 these days and most want near a grand for used 99s. If you are determined to drop $1k+ get the BNRs hands down.

thewird

iTrader: (8)

That's exactly what I was thinking. All this talk about getting 99's, like what the hell.

thewird

Double_J

iTrader: (28)

I didn't notice any lag with the BNR's compared to stock turbos.

Double_J

iTrader: (28)

I can't remember what the stock ones did but when I'm in 5th gear and around 3k, I get 14-15psi in 300RPM. That's pretty fast to me.

fendamonky

iTrader: (6)

OP, if you want I can give you my old stock twins once I get a place and my household goods arrive.. i'd have to check on their condition, but I don't remember them having any leaks or shaft play.

I've got my FD parked on Indian Head atm if you ever wanna get together to chill/drive on the local backroads.

Bryan Jacobs

iTrader: (66)

First of all, the older 93-95 twins have larger compressor wheels. There is hardly any difference just "bolting on" a set of '99's because on the newer rx7's there are other upgraded components which contribute to the increased hp rating not just the turbos (such as upgraded ic, ecu, exhaust). Now that being, said why would you pay $2600 for some new 99 spec turbos when I can sell you a brand new set of 93-95 twins for near $1000 less. Brand New in box. PM me if ur interested. Don't bother running through used turbos, more often then not they're on their way out and you wasting time and money. Do it right, once, the first time.