yes i tried the search button! just wondering besides stock seq.,bnr's and effini is there any other options if you still want the twin turbo benefits at auto-x and road race events?

 

Most any turbo shop will rebuild your twins, but its pretty iffy, I've gotten smokey rebuild from a reputable builder. Going wiht a new set of enfini's should give oyu a reliable setup.

 

You could run twin GT28s...

 

That's about it for bolt-in sequential options.

The twin GT28s or any other pair of singles will require a lot of custom stuff and is not really in the same price class. Is anyone even running them sequentially? (If so, I wonder how they're valving them)

Dave

 

True, my twin t3/to4e set up ran me $10,000 for the set up with the exhaust manifold, twin down pipes, exhaust set up, oil lines, intake kit, thats not counting the intercooler. I tried going to different shops to see if they can design a squential set up but no luck. Also the time it takes them to do custom work is unbearable.

 

If you can find a set of Knight Sports RF420's thats an option.

L8r
Jeremy

 

You won't go wrong with efini twins if you want to maintain a sequential twin instalation. IMHO, any "upgraded" twins based on the originals are "rebuilt" twins, and with that comes the risk and everything associated with that. Some people have had good luck, some haven't... there's no luck needed with the efini's, they bolt right in and are a brand new factor part.

Also IMHO, there's no point in running twin "upgrade kit" setups. That's alot of cost and complication compared with the many good, tried, and true single turbo kits out there, with comparable power and response, and alot less complexity.

When my OE's got long in the tooth, I really only considered two options: Efini or single upgrade.

 

Running the BNRs sequentially will give you an animal of a powerband, and you can't beat the cost. ~$2300 for a set.

 

I was gonna say...Why run Efini's when you could run the more potent BNR's...

 

Have you ever tried running yours sequential? Im looking into the BNRs , and it seems from the few searches Ive ran, no one is yet running them sequential. Ive even seen concern from a few that the solenoids may not operate properly at those power/flow levels. Any truth to that? I currently have a perfectly working sequential system on my stock turbos, but am debating weather or not to go full sequential if I go BNR. I dont want to start having issues.

 

I never seriously considered going back to sequential because of the added complexity of the system and also the work involved. If I knew back then what I know now I may have stayed sequential with my BNRs. Talk to agentspeed here on the forum, I think he was the guy who was running seq but had problems on the dyno, so he dynoed temporarily non-seq and then switched back to seq for street use.

Rich

 

See my post above.

 

Their is a weird problem that I am having with my car and getting it checked on, hopefully this weekend, by a local. Kyle K. for you Houston area members that might know him. We think its the secondary turbo but arent for sure yet. If this is I will am going to buy a new set of turbo's. I would be running non-sequential BNR's. For those of you who already have this setup can you send me some feedback on it. I have searched but havn't got anything to specific. I saw a dyno sheet of the BNR's but wasnt sure if it was the stage 3. It also had upgrades that i dont have so really sketchy on the output of the turbos themselves.

Sorry to steal the thread

But, your twin turbo options are pretty much limited to....stock, 99 spec, and BNR's. In the first Super Street magazine i purchased (somewhere at the age of 13). Their was an article in the back that has a Pearl White Veilside FD. Its owner lives in Seattle. Well he had on Pettit Racing Hybrid H12. I havn't really researched these but I know it wasnt a single turbo. You might just wanna find something on these. Just trying to give you some info.

If I am wrong about any of these facts please correct me but dont flame me,.....im just a messenger.

 

For clarification, the new-style BNRs are completely new CHRAs (rotating assys) which are fitted to bored out stock compressor and turbine housings. As such, they are brand new turbos.

also, those pettit hybrids are very very old school....simply modded compressor wheels which i have seen make a negligible diff vs stock. ht12 is stock....the wheels arent bigger, just modded.

Rich

 

Didn't RX7 Store used to have a set up with twin GT28's? I'm curious to see what power that kit makes.