Is this mod worth it?..it cost 600 bucks from TURBONETICS.
I have an 87TII and wants 300 flywheel HP. TII has exaust,intake,FMIC, and HKS FCON. Which trim should i get?..v,h,or 60-1?..

 

I heard bad things about them. Just go with a complete turbo upgrade.

 

hmmm what kind of bad things???..Any idea???

 

I had a buddy who had the super "H" upgrade. He made 312 rwhp with the setup with a mild street port. He then put a motor w/ a very large side port and actually lost power, because the stock exhaust housing was to small. This upgrade does nothing to the exhaust side of the turbo, all it is is a TO4B compressor w/a TO4E blade.

 

Like turbos blowing after about 64-6 hours use.

 

hmm are you serious?..i hear people do this mod and are very happy with the resuld. Besides the compressor housing what else will be replaced when doing this upgrade. I want a TO4B with a "V" trim. Does TURBINE needs replacement also???..

 

There is a guy here on the forum that builds turbos for a living and just started his own rx7 business dealing mostly with upgraded tubos. He makes some awsome hybrid turbos and is actually a friend of mine. He has a way of modding the stock 2nd Gen turbo to pump out over 300hp. I'm not a turbo specialist so dont know exactly what it is but it involves him doing some porting and so forth to the turbo, I dont know what else he does to it. It comes with warrenty too.

His email address is EXCESboost@aol.com his name is Brian and his forum name is Feared7. He posted something a few weeks ago in the 2nd Gen section and some guys mailed thier turbos to him but I just checked and the thread was lost in the forum crash.

Hope it helps, if you want more details you can email me at SJWhite2000@aol.com

STEPHEN

 

Cool!..i know someone willing to do the upgrade for me but i hardly know the guy. I dont want to send him my stock turbo and never get it back. Atleast someone from the forum does it and i will definitely email him!..thanx!

 

No problem, Brians a real good guy. We are in the process of making a new SMIC for the 3rd Gen.

I'm not sure what these upgrades normally cost but I'm sure he'll be close or better with his pricing.

Anyway, glad I could help!!!

Later,
STEPHEN

 

there is also a guy who is very good at building stock turbo upgrades in florida. www.micturbo.com

 

I've never seen an actual HITACHI turbo that had a compressor upgrade. But i heard that if you get a bigger compressor that it will not clear the lower intake??..that you have to clock the compressor????...does anybody have any idea?...also i emailed
Brian and he said that instead of putting a bigger compressor that he machines the inside of the stock compressor to fit a bigger wheel???..i dont get it?!...isn't the purpose of upgrading the stock compressor to get a bigger one???..any idea on this one also?!?!

 

I believe he means that instead of using a bigger compressor housing to fit the larger compressor wheel, he machines the stock compressor housing so that the bigger wheel will fit.

 

I had Bryan do a compressor upgrade for me about a year ago. He put on a Turbonetics TO4B super series compressor with the 60-1 wheel on the stock turbine housing and center section. They modified the stock exhaust manifold for an external wastegate. This set up has added some power to my previous stock motor and given me better boost control but now that I have a street port, the turbine housing is the big time restrictor in this set up. I would say it is a reasonable first upgrade for a small budget and the mechanically hindered who want to do there own work. All of the stock water and oil lines bolt right up for easy bolt on power. This has a maximum HP of around 350. Still needs fuel enrichment to be reliable. This current set up of mine is for sale which includes a Deltagate wastegate. Bryan does good work but make sure that is what you want.

 

Yes. That's exactly what he said?..is that good though??..isnt the whole purpose is to get a larger compressor housing?...but according to him, smaller the compressor the faster it spools and less lag?...hmmmm but does it work like that???

 

Yes in some ways. The bigger factor, as long as the compressor is not way out of proportion to the turbine, (the set up would be about the biggest gap between the two) the turbine size and trim will determine the lag and the usefull powerband. The compressor will determine the power potential but it is the rest of the chain that will determine the the efficiency of the components. If you read some of the other posts on this topic, you will here people like Crispeed and Rice Racing, be very specific when it comes to lag, hp, porting , exhaust housings, fuel management ect. All of this is integral to your goals. The series 5 second gens. have more potential for gain using small compressor increases because of the better flowing stock exhaust manafold and turbine. Beyond this, a TO4 varient exhaust side is the next step.

 

To answer you question on lag with my set-up. I have very little if any. Boost comes on very early and quick but by 6000 rpm, I am starting to choke. Very streetable and auto-x set up. I am now building for track lapping days and driving schools. So I am going to a full conversion to a divided TO4 and a T66.

Good luck

 

The turbo Brian is talking to you about has very fast spool up and is good for around 350hp. It also bolt right up since it uses the stock housing.

It would be a wonderful turbo to make your goals, now if you wanted 500hp I'm sure he'd suggest something else but in the low 300 range this is the ticket. Your getting all the hp you want, very fast spool up, and its completely bolt up since its a stock housing!!!!!

What else could you ask for???

I say go for it!!!!

Later,

 

I was just reading a post on the 2nd gen section about a guy asking about TURBOCHARGER.COM. Another person responded and said to stay away from TURBOCHARGER.COM I myself dont have anything against those guys as a matter of fact i've called them before and spoken to them about what i want which is a compressor upgrade. Pretty nice folks!..BUT I heard that they SUCK according to the person that replied to that 2nd gen post. I dont know if i agree with that guy because a TURBO rebuilder doesnt have to know anything about rotaries when rebuilding a turbo for rotaries such as RX7s. I think all that matters is he knows what he is doing and honest about the clean job.

On the other hand, i have to contact Brian and ask more questions before i send him my turbo. Im more confident on working with a person that knows what i have and what i want.

Any opinion on which TRIM to get?..i heard with a machined stock compressor the biggest trim that fits is a V-TRIM?..

 

I saw this one for sale:

+++++Garret To4b turbo, V-trim compressor, P trim turbine wheel with .96 a/r turbine housing, turbo good for around 350 hp ++++

is this a good buy or not??? i have 87TII and 300-350HP is my goal..i have mods to help me push it to that HP level.