HDP

iTrader: (2)

I know there are a lot of people who have gone N.S. with stock twins and BNRs, but has anyone done the full N.S. with 99 spec RZ twins? I have thought about converting to N.S. when I install my new RZ twins but I've had some people tell me not to. Since they spool faster than the stock twins, would the lag that most experience/complain about not be an issue? The faster spool was also the reason I was told not to go N.S. I'm sort of walking the fence on this one, so please just facts and no bias opinions. TIA

F0RSAKEN

No matter what you do, NS will lag worse than Seq. It may help a little bit , but by no means will it get rid of the lag.

Jay7 Nyc

iTrader: (3)

Lag on twins? Get the misconception out of your heads, why would you want to start boosting at 2k-2500k anyway you'll just be eating up gas. By the end of 2800 you should already be boosting with a set of twins regardless if there stock or RZ twins. I have a greddy t88 and I dont feel any lag that people swear they know of.

nopistons94

Why would you NOT want to build boost at 2-2500k RPMs? Are you insane, gas mileage? LOL come on bro.. get real.


Non-seq delivers no extra power, just more lag. There is no reason a street FD IMO should be non-seq other then to simplify the sol and vac line configurations. Non-seq is the easy way out of fixing problems with the car.

jacobcartmill

iTrader: (6)

agreed.

when i replaced my turbos, i just went ahead and did the full nonsequential mod, and FINALLY my car runs well. really the only benefit (while the car is still close to stock like mine) is the simplification... i'd love to have a totally functional full-sequential setup, but i like the lack of vac lines, butterflies, flappers, etc.

alberto_mg

i love my 99 twins running sequentially

i'm a big fan of torque and having low end power readily available for when i'm lower in the rev range.

moktan_fdtt

99 spec sequential! the best!

HDP

iTrader: (2)

So has anyone actually ran them non sequential?

alberto_mg

nope. why would anyone drop that kind of coin on new 99spec turbos and run them non-sequential...

people generally run non-seq either b/c they couldn't get the sequential system to work properly or their turbos failed and they couldn't find a set with a good manifold that isn't seriously cracked to run sequentially.

FLA94FD

They do spool faster but boost doesn't build much faster I think I reach 10 psi around 2800 maybe a little lower in the lower gears but not by 2000 rpm. The lag is a modest improvement, the time between hitting the gas and boost get online. The RPM which 10 psi is reached seems to be about the same. Lag is still much greater the 1.8T Jetta that we have full boost is achieved at 1500 rpm and lag is about half as long. The also run out of steam though.

Herblenny

iTrader: (13)

I agree with Alberto mg,

Don, I wouldn't run it non-seq. I always wanted to go 99 280 turbos because of the spool time and if you go non-seq, its really not worth it. Also, if you really want to go true non-seq, you would need to modify couple of things. Also, not worth doing it to your 99s.

Regarding non-seq making more power.. By what i've seen in the past, non-seq tends to make more power than seq. Don't ask me why.. maybe because when you go true non-seq, you have to eliminate the flapper door, the actuator door, and such, which will hinder less?? who knows.. but they do make more power for some reason.

HDP

iTrader: (2)

Thanks guys. I guess I will stay sequential but I'm going to look for solenoids to replace the stock ones that can handle more psi. I have found a few sources, actually one is in B'ham.

FLA94FD

I'm running 14psi on my high setting what solenoids are you do you feel need to be replaced? I seen no problems.

Herblenny

iTrader: (13)

I'm confused also?? what solenoids are you talking about that you need to run higher boost??

Didn't Tim Benton ran these and found out 14psi is max on 99's?? I believe stock solenoids are good for way past 14lbs.

HDP

iTrader: (2)

https://www.rx7club.com/forum/showthread.php?t=372894


I actually had this idea before saxyman990 came out with his solenoid replacements.

saxyman990

I agree with what was stated here. I have a set of 99spec twins on my car (running seq). If I was interested in doing non-seq then I would have kept the 93 twins.

If you're looking for replacement solenoids, then you might want to check out my system. I have it running on ~12 cars right now, and they're all working great.

Background info:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/custom-replacement-solenoid-system-404243/

Last GB that I did (please note, prices listed in this thread are no longer valid):
https://www.rx7club.com/group-buy-center-69/gb-custom-solenoid-replacement-447238/

Contact me if you want more info.


-Rob

Herblenny

iTrader: (13)

Rob,

Very Cool! I don't know how I missed it..

Anyhow, I do have couple of questions.. Has anyone use these in high temp set up?? Also, Has anyone use it to boost more than 14lbs??

I'm not saying your set up isn't good. I think its great! But with someone with 30+ stock solenoids laying around in my garage, i'm wondering if its worth it to go with your set up or just check ones I have and pick out the good ones to use.

I'm currently in process of running older BNR stage 3 in seq. set up. And I don't have a place to relocate the solenoids.. So, it would have to be under the UIM.

saxyman990

They fit under the UIM just fine. I believe 1 or 2 of my customers opted to put the system there. But just out of curiosity, why don't you have a place to relocate them?

I have a few people running the system down in Florida and Texas. They can vouch for the high-temp capabilities more than I can. Personally speaking, I used them durring a track-day at Mid-Ohio. The car ran (4) ~20 minute sessions at 14lbs of boost on 99spec twins, with very little breathing time between runs. Ambient temps were 98+degrees. Never had a problem with the solenoids (now, brakes were a different story....).

I personally run 12-14psi on the street with 99 twins. A few other individuals run upwards of 17-18 psi without problem (the solenoids are designed to be functional up to 100psi). I believe there is one individual running these with his BNR-3's. I'll try to track him down for you.

Realistically, if you have 30+ stock solenoids sitting around in your garage, you're probably better off just using those. But personally, I got annoyed with troubleshooting and replacing solenoids time after time (not to mention the fact that I wanted a cleaner look), so I opted to create a replacement set.

Hope that helps,

-Rob

Herblenny

iTrader: (13)

Thanks Rob, That really did help.

I'll probably stick with the stock solenoids for now. I'm only going to run these turbos seq. for short period. After that, I'm going to go non-seq than install my T76BB... then I guess the 3rotor.

I don't have any room because I'm currently running Garfinkle torque brace and my Apexi AVCR solenoid is placed there.. And I think something else.. Last time I looked (a year ago), I didn't have much room.

They do look fantastic and good to hear about the spec. I never knew they existed and used on FDs. Great info and great job!

AgentSpeed

I'll never go back to seq. Even if I bought a new car, the first thing I'd do is rip out the seq system. I haven't seen any 99 twins non-seq so I can't speak on that subject but I do know that I enjoy the feel of my non-seq setup.

As an added bonus, the engine bay looks so much cleaner and less cluttered.

(Sorry for the bais Don...)

You can always try it seq first and then later on go non-seq if you want too.

Herblenny

iTrader: (13)

HEATH!! LOL! I know, I just want to see this BNRs running seq. and how fast they spool. I'll probably keep it for few months and go non-seq. I already have a turbo manifold welded and such for Non seq... then the BIG boy single turbo..

When are you coming to Bham again?? We found a new resturant for us to go.. I think you'll LOVE it!!

AgentSpeed

Yeah I know I need to swing down soon. It seems like everytime I think I've got free time, something always comes up. Thankfully I'm switching to 12 hour shifts at work so I'll have more off days.

I've been meaning to take a trip to Huntsville, Nashville, & Birmingham lately...
Hopefully soon!

HDP

iTrader: (2)

Sorry, but I really can't justify paying someone else for something I am capable of doing myself. I've PM'd you before stating I was not interested in a full kit but only info on purchasing just the solenoids and you were evasive and tightlipped about it. I'm not sure if you want to corner the market on replacements solenoids, but I'm not interested in taking business from you, I just want to fix my car, without the hassle of a price mark-up from a middle man.

saxyman990

I'm glad that you are capable of doing something like this yourself (although I never said you weren't). If you're not interested in one of my systems, that's perfectly fine, it honestly doesn't bother me one bit. But please don't state things that are un-truths. You did PM me about the solenoid system a while ago. I remember that now that you mention it. Here is a direct quote from the last PM that I sent you in reply (sent 1 Sep 05 at 2:22pm):
I personally don't think that I was being "evasive" or "tight-lipped." I even specifically told you that I can sell individual solenoids if you're interested. I am not interested in cornering any market (there really isn't any market for upgraded solenoids), nor have I made much money with the sale of these. I simply built a system for myself, and figured maybe other people would like them, so I offered my services to them as well. I have built and sold about 20 systems, put well over 30hrs of labor into them (which doesn't even include the development or testing time. That's another ~20hrs), and to date I've made just under a hundred bucks. When you factor in other miscellaneous costs of building these (things that most people don't think of, like the fact that it costs $50+ to run a group buy here on the RX-7 club), that profit is basically negligible. Shoot that's not even close to enough to pay for the solenoids that I run in my own car. My only interest has been (and always will be) helping other RX-7 owners. So please don't act like I'm some third-class middle man just trying to make a buck.

I'm sorry for mentioning anything about them in your thread. Good luck with your project
-Rob

HDP

iTrader: (2)

Well, when someone asks for information but an alternative solution is offered and giving the asked information is avoided altogether, I would call that being evasive and tightlipped.


https://www.rx7club.com/showpost.php...5&postcount=42

and the entire PM sent sent 1 Sep 05 at 2:22pm

Both the other individual and myself asked where the solenoids could be purchased and both times you sidestepped the questions. It's strange that considering your solenoids are custom built to your specifications that I've since been able to locate several companies that make them as well. I saw your reply to my PM as B.S. so I just let it go and did the research on my own. I'm sorry, but anyone that withholds general information to maintain control over something doesn't sit well with me. It's not like you are manufacturing the solenoids yourself or you have exclusive rights to them, you are buying them and assembling a kit for others to buy, just like ANYONE else could who had the means and knowledge to do so. The idea is not original as I had posted the same idea nearly a year before you did, and I'm sure others have had the same idea as well. Just like 4CN Air has put together a poly mount kit with parts and hardware ANYONE can purchase and assemble, he just saved others the trouble by putting a kit together.

And please, save the song and dance about your only interest is to help other RX-7 owners. If that was the case, you would have been forth coming with your findings THEN offered an assembled kit for those who either did not have the means to do so or did not have the time to invest in it. And also, why would you, or anyone else for that matter, be an "authorized distributor" of something if not to make money? There's nothing wrong with taking an idea and making a profit from it, I just have a problem with someone concealing their true motive.