brent clement

Running twin t25's @7psi with just an rtek1.7 and an safc2 for tuning. T2 block with street ported irons(resurfaced and hardened) and race ported exh. I'm running 550cc and 720cc inj. and a 255lph pump.

Brent

No_Rotor_RX7

any pics of the turbo manifold? and do you sell these? i take it your using t3 turbine sides.

brent clement

Not selling them at this point. I guess I could if there's a demand. Certainly wouldn't be any time soon though, sorry. Here's a couple pics. I could however sell you all the flanges if you have someone to build it. It's actually quite easy to make, except the dp's that is.

Terrh

iTrader: (7)

twin turbos on a stock ems!

Wow.

Sideways7

iTrader: (7)

Well, its not a totally stock EMS. Still impressive, though.

brent clement

Probably gonna go with the rtek2.0 next. I want to get familiar with as many different set ups as I can. After that I'll probably go full standalone. Hard to say though. Plans have a way of changing in a hurry.

No_Rotor_RX7

thank you for the pics... you are right, that is alot more simple than i expected. i thought you maybe had both runners coming together then splitting off. how is your spool up and when do you make peak tq?

those are untouched T25's? or have they been modded at all... sorry for the questions. i was thinking of running twin's but with two TII turbos that have been modded. i appreciate your info

brent clement

I get full boost at about 3k. Here's the dyno graph.
Brent

RETed

Nice numbers.
You almost made the same numbers as my small T5/T6 hybrid with half the boost pressure.

The graph is nice and smooth, but it looks like it tails off on the top end.
You know what the turbine A/R's are on those T25's?
It looks fairly small - 0.8x or smaller?


-Ted

Dom_C

that looks like a really nice torque curve. Becarful turnign the boost up too much more. The injector combo that you have start struggling after like 275-280 to the wheels. If I remember correctly someone has pully 300rwhp out of that combo but that was realllly stretching it, not much of a buffer zone.

brent clement

I'll check tonight, but I think the a/r is .8. Don't quote me on that though, it's 5am. I was suprised to see it tail off up top as well, I beleive its timing. I played with the timing a little on the dyno and had to do three runs just to get it back where it was originally.

I'm sure your right about the inj. I'll be moving the 720's to the primary spots and putting in some 1000 or 1200cc's in the sec. come spring time provided I have the rtek2.0 or a standalone. I'm hoping for 350 @ 12psi. No way to be sure til I do it though. The cars no where near ready to handle the power right now. I want to be completely ready when I go back to the dyno. Clutch,tires,tranny,ecu, etc... Too many weak links to turn it up now.

c_mart_28

iTrader: (1)

neat setup. I like seeing a bit of originality.

Scott@BBS

hell yes!

No_Rotor_RX7

hey, i just noticed in the one picture of just the manifold on an engine block.... what LIM is that? or was that on a mock up motor...

brent clement

That's the lim that I welded and port matched to the 6port. I lost a primary inj. after only 4 days and before I knew what hit me boost came on along with the secondary inj. I'm sure you know what happened next.POP! So the new eng. is a low comp. that I built about a month ago.

No_Rotor_RX7

so your using a TII engine? or a 6port w/ low comp rotors?

brent clement

The 6port hi comp died. It's all t2(aside from the mods) Low comp rotors, street ported intakes and my own race port exhausts.

No_Rotor_RX7

sounds very similar to the one i'm finishing up for my TII. S4 block, cryo'd, etc... large streetport intakes, race port exhaust. FUG YEA!

i hope you aren't angry, but i already started on my version of your twin setup. i finally have faith in it now after seeing yours. so, thank you very much for inspiration i'm using turbos a little larger tho.

keep us updated tho when you turn up the wick WOOHOO!

KompressorLOgic

iTrader: (6)

im doing 6 port turbo again in a week or so, thats acrappy way to go! i lost a primary injector in my NA once

eriksseven

iTrader: (6)

Bad-*** setup... Seriously. Custom twin turbo using basically the stock ECU? 255whp at 7psi?

I want it.

brent clement

I'm flattered that your doing a similar set up. I wish I could have got the 6port eng. on the dyno, it pulled a lot harder believe it or not. BTW, Mount your turbo's a little higher or you'll end up having to notch the frame for the oil return lines. Not really a big deal, just one extra headache that's easily avoided.

MetalX7

i wish i hadnt seen this thread .... twins twins twins ... me wants

very nice setup btw. gives me ideas too

No_Rotor_RX7

yea i'm gonna set my turbos pretty high, well atleast the one closest to the firewall. i'm using upgraded 2.3l ford turbos

i'm sure the 6port did pull harder but you'll be able to crank the hell out it on this setup! WOOWOOOOO!

brent clement

Exactly.

No_Rotor_RX7

low compression FTW!