Need help identifying these modified stock looking twin turbos.
07-06-19, 02:36 PM
#2
Bought these from another member a long time ago. He said they were BNRs but upon arrival, they don't match up with BNR3s at all.
Compressor wheel doesnt look the same as BNR website and does not use BNRs modified ypipe.
Compressor wheels are not stock and the only markings are NA31 on the primary and NC31 on the secondary.
So im guessing it some sort of stock housing modified compressor wheel turbos. Debating if I should try them for fun.
Compressor wheel doesnt look the same as BNR website and does not use BNRs modified ypipe.
Compressor wheels are not stock and the only markings are NA31 on the primary and NC31 on the secondary.
So im guessing it some sort of stock housing modified compressor wheel turbos. Debating if I should try them for fun.
07-06-19, 05:32 PM
#3
Rotary Freak
Wastegate and precontrol actuators look like they have the same coating as the BNRs, but as far as I'm aware they've all had the 10mm extension on the Y and the wheels and modified housings do look different to the ones he was selling 15 years ago, which had a radiused transition.
Debris down the compressor outlet and exposed oil feed would have me a touch nervous if they've been in a dirty environment.
Debris down the compressor outlet and exposed oil feed would have me a touch nervous if they've been in a dirty environment.
07-08-19, 11:12 AM
#4
RX-7 Bad Ass
iTrader: (55)
Could be older BNR's, he's been upgrading them for YEARS and they've changed a number of times.
The N3C1/N3A1 is the Mazda part numbers for the turbos originally. No relationship to the upgrade that was done on them.
Could have also been done by a turbo shop, I know back in the day many turbo shops would upgrade wheels on stock turbos to make more power.
Really hard to say.
Dale
The N3C1/N3A1 is the Mazda part numbers for the turbos originally. No relationship to the upgrade that was done on them.
Could have also been done by a turbo shop, I know back in the day many turbo shops would upgrade wheels on stock turbos to make more power.
Really hard to say.
Dale
07-08-19, 12:31 PM
#5
Since the stock y-pipe works then they use the original HT12 CHRA's and it isn't the current Stage 3 upgrade. BNR has changed/discontinued some FC turbo offerings so it may be the same for the twins.
Pull off a compressor cover and measure the compressor diameters to figure out what it is.
Pull off a compressor cover and measure the compressor diameters to figure out what it is.
07-08-19, 01:29 PM
#6
RX-7 Bad Ass
iTrader: (55)
I would call/email BNR and ask them. They may be able to identify them and if not give you some advice on what you have. They've seen a lot of the other upgrades done on stock twins.
Dale
Dale
Thread
Thread Starter
Forum
Replies
Last Post
Efinity
Far East Forum
3
03-02-15 09:01 PM
krazy_1st_gen
2nd Generation Specific (1986-1992)
13
04-04-05 07:33 AM