10yearrx7

iTrader: (2)

My dad and I took my 10AE down to Mazdatrix a few days ago to get a complete engine rebuild. We compression tested and we were only at about 70-75 on the rear rotor so we didn't even bother to check the front.

I'm already dying without my car and its only been a couple days but I know it will be worth it because of how much better it will be when finished.

We're doing a class b rebuild, S5 turbo, street port, haltech P1000, 2000cc secondaries, possibly water injection, and some other stuff. (the list is long).

250-300 whp is our goal. probably closer to 250 because its going to be a dd so it will be running low boost. Its at 217 whp right now with basically exhaust and intake so those numbers should be do-able.

Ill post pics when it is finished, but it will be a month at least...

SoloII///M

iTrader: (13)

2000 cc secondaries and 300whp as a goal? I uh... why so big? You're going to have a bear of a time staging those smoothly.

BurntOrangeT2

iTrader: (30)

^No joke are you even upgrading the commpressor side on the Turbo? Lord you could easily get by with 850's

Spirit-RE

iTrader: (25)

ditch the 2000cc's and put the money towards a hybrid turbo if you want anything over 250hp.

Rob XX 7

iTrader: (8)

2000cc injectors really dont cost that much more then 850s, me thinking that he is confused

cool that you got mazdatrix on the project, I would like to hear how it comes out.

10yearrx7

iTrader: (2)

I told him that I thought the 2000cc were to big but he said that they can run very smoothly and that then if I want more power in the future I wont have to upgrade, so we'll see how it all works out.

And about the turbo we might get a hybrid but most likely an S5 with I'm guessing a ported wastegate. We would get a bigger turbo and what not but the money isn't there, we just want the car to run good as a dd and make good power at the same time.

We just took the car in and he came up with this set up on his own and I'm willing to put my trust in him, i mean come on its Mazdatrix lol.

10yearrx7

iTrader: (2)

I know where you guys are coming from- my dads buddy has an rx2 with a 3rd gen motor running 9.60 1/4 miles and he only has 1600cc's.

RotaryRocket88

iTrader: (7)

Here's a great thread for calculating injector size: https://www.rx7club.com/auxiliary-injection-173/feeding-turbo-rotary-horsepower-airflow-fuels-882676/. You're looking at 5100cc of fuel, which is about enough to support a 600 whp car. No matter what anyone says, staging a 550cc to 2000cc injector transition is not going to be fun.

TitaniumTT

I'll let you know next week how my 725/2000 staging goes mmmmkay? I'd be willing to put money on ironing it out to where it's not even felt in 2 pulls.

SirCygnus

iTrader: (1)

yah, he says hes got the platinum sport 1000.

incubuseva

iTrader: (13)

Why not go with a BNR stage 1 hybrid turbo? That would throw you right up to 300hp. Probably a bit more with your setup and tuning.

Slow Rotor

My 550/1600 cc staging is shithouse. Im getting rid of them and running 4 1000cc injectors. It's not noticable at WOT. But if you try bring the revs up slowly, the engine is basically flooding as its going as soon as the secondarys start coming on.

RotaryRocket88

iTrader: (7)

That's a pretty bold statement there. If it takes you 3 or more pulls, you be sure to come back here and let everyone know. While I'm sure it can be smoothed out (Note I said it would simply not be fun), I never said it was impossible. The contrast in duty cycles will no doubt make it more difficult than with an injector set that is more evenly matched. Go for it, I won't be offended. Now to suggest that the OP go out and overbuild his fuel system by about 100-150% for a STOCK TURBO engine is insanely overkill. Can it be done? Sure. Is it a logical modification? No.

13bpower

I have to agree that the fuel system is being rediculously overbuilt for the "goal" of the car. Sure, the cost difference isn't that much, but it's still overkill. 550's and 720's are just fine for 250whp... even 300.

hurleysurf24

iTrader: (3)

2000cc injectors ... thats retarded ...

TitaniumTT

I certainly will, but in all honesty, I don't think I'll have to adjust anything after I reconfigure a few things before I even start the car.

For all of you saying that 2000's are retarded, please just stop right now. There are 2000cc injectors that can idle a car at a 850 rpm's, and pretty smoothly too. It's all about your choice in injectors, how you set up the ecu, and how good you are at tuning it. There's nothing wrong with overbuilding a fuel system.

What I don't agree with here from the OP is using stock injectors, and then the ID2000's in the secondary. Personally I wold run 4 725's or 4 1000's. But to say it's retarded is just plain naive

Rob XX 7

iTrader: (8)

I am sure the OP will get the car back and it will run great, this is probably a really good reason why alot of professionals don't post anything- they don't feel like getting into a pissing match

set up is always key, you can throw a bunch of parts and a bunch of money into a car and it may not perform that great.
Everyone kept telling me how small my turbo was, why the cast iron manifold ( comments like : Why on earth are you using an undivided HKS log manifold with a divided turbine housing?) , etc... but the car runs like factory and made GREAT numbers.

10yearrx7

iTrader: (2)

Thank you for everyones concern and for the people defendeing my set up.

I'm only 18 and going to college to be an auto mechanic, but right now i'm doin general ed, so I don't know to much about all this injector stuff. I was iffy about it too because 2000's are huge, but he said he uses them all the time with no problems.

And about over building the fuel system, yea I know its overkill but i have had detonation in the past and i don't wanna see it again lol

beefhole

iTrader: (29)

Maybe it's all a simple missunderstanding and the builder meant the secondaries capacity is 2000cc, each being a 1000cc. Who knows. Not my problem

RotaryEvolution

iTrader: (30)

now you're talking about apples and oranges, theyre talking about injector staging, not how well a car can idle on a set of injectors.

this is his DD, meaning he will be driving it in town alot i'm sure so the hiccups from the injector staging will get old after a while. sure it can be minimalized but there will always be a hiccup in the transition regardless of what anyone sais here, that is a WIDE gap to transition the injectors through and is a bit of "room for upgrades" that probably isn't necessary.

RHDturboII

iTrader: (4)

I also have the ID725s and ID2000s. The ID2000s are actually 2200cc injectors i think.

SoloII///M

iTrader: (13)

The point is that there is no need to have 2000cc injectors for 300whp. As for "not having to upgrade later," that may be true but injectors are easy to swap out when you need more.

TitaniumTT

And I'm saying that if 2000 or 2200cc injectors are precise enough to idle a car then they are precise enough to tune out any hiccups during a transition
I think its a little arrogant to male statements about a setup that you have no experience with. Especially using words such as "always" and statements like "I don't care what amyone else says." Really? I'll have to post up a vid and a datalog when I have it to show that a 725/2000 combo can be so smooth you won't even feel it or see it on a datalog

10yearrx7

iTrader: (2)

I'm just sticking to what mazdatrix wants to do. I mean they are professionals and for all I know all you people could be like me and don't know a damn thing about all this stuff. They build rotary everythings and i've never heard one bad remark about them. I told them it was going to be a daily driver but i also told him it see's racing quite often(from 1/4 mile to freeway) so hopefully he didn't only hear the racing part and not the dd part

SoloII///M

iTrader: (13)

Freeway racing. Ah.

/thread