boosting a 4-port 13b na

sikest1 · 10-12-2009, 02:11 PM

I have a T II system available but I want to keep it carb'd

Whizbang · 10-12-2009, 08:43 PM

not too sure what your asking of us.

Rotarydave · 10-12-2009, 11:50 PM

Ok we need more information here,

#1 engine which engine do you have you say 13b 4port so is this an old school 4port 74-5 or 76-78 or is this a bitch engine that was built using 12a plates an GSL-SE housings? Or is this a Turbo block from a second or third gen Rx7.

#2 you say that you have a T2 setup but want to stay carb'd? You are in for one hell of a time trying to get that setup to work. Some of the other guys out there will chime in with all kinds of advice on this. IMHO if you want to go turbo then you are probably going to have to do a blow through setup to stay carb'd. You would be better off going with draw through injection. Now if you just want to boost the engine for street driving and you want to stay simple Camden Supercharger Kit. I have run all of them and MY preference is for the last.

BTW don't let my low post count fool you I have nearly half as many rotaries as I do posts

rx4ur7 · 10-14-2009, 01:46 AM

Don't let him fool you, I am pretty sure he has had more than his posts. How's it going Dave...

Rotarydave · 10-14-2009, 11:54 AM

pretty good I am currently in Iraq hope to be back in the states in time for 7stock next year as we missed this year. Hoping also to have a couple of primo pieces to take out there as well

sikest1 · 10-14-2009, 05:39 PM

the PO said I can use an S4 or maybe an S5 intake so either he wasn't sure or didn't want to get into detail but I'm just wondering if I can use the exaust, turbo, and intercooler from the TII system? I'm a little broke as I just spent over 4G's on the paint. But I can't stand the power lag in the mid range and I'm going to do a complete build in a couple years. Also I need to change the bolt pattern from 4x110

PercentSevenC · 10-14-2009, 06:29 PM

No, you can't use a TII intake. The bolt pattern is different and you don't have bungs for the primary injectors. You'll need an early 13B intake manifold. There aren't any that I know of that will work with the stock S5 exhaust manifold and turbo as-is. You have to space the turbo away from the engine.

With my Racing Beat sidedraft manifold, the turbine housing and one of the primary intake runners had to be ground down a bit, and that's with about a 1/4" spacer between the turbo and exhaust manifold. It's still very close, but I can't go out any further because the idler arm is in the way (it's pretty tricky getting the turbo in, in fact). I don't know whether an S4 turbo and manifold would be any easier or harder to fit.

The stock top-mount intercooler is pretty worthless. Pick up an eBay intercooler and set it up as a front-mount (or do without if you're cheap like me).

Rotarydave · 10-16-2009, 04:04 PM

%7c when he PM'd me about his engine it sounded like he really has a turbo block with NA internals I asked him to post some pics so we could be for certain on what he has, I know you will agree that it will make all the difference in the world when it comes to manifolds and such

PercentSevenC · 10-18-2009, 10:35 AM

Yeah, that changes things a lot. Makes things much simpler.

10-12-2009, 11:50 PM	#3
Rotarydave Rotary Nut Case Join Date: Jan 2009 Location: Cibolo, TX iTrader: (0) Posts: 273 Rep Power: 16	Ok we need more information here, #1 engine which engine do you have you say 13b 4port so is this an old school 4port 74-5 or 76-78 or is this a bitch engine that was built using 12a plates an GSL-SE housings? Or is this a Turbo block from a second or third gen Rx7. #2 you say that you have a T2 setup but want to stay carb'd? You are in for one hell of a time trying to get that setup to work. Some of the other guys out there will chime in with all kinds of advice on this. IMHO if you want to go turbo then you are probably going to have to do a blow through setup to stay carb'd. You would be better off going with draw through injection. Now if you just want to boost the engine for street driving and you want to stay simple Camden Supercharger Kit. I have run all of them and MY preference is for the last. BTW don't let my low post count fool you I have nearly half as many rotaries as I do posts Last edited by Rotarydave; 10-12-2009 at 11:52 PM.. Reason: not done

10-14-2009, 05:39 PM	#6
sikest1 pwrdbyrotorcuzpistnsrweak Join Date: Sep 2009 Location: Cambridge, On iTrader: (0) Posts: 36 Rep Power: 0	boost the PO said I can use an S4 or maybe an S5 intake so either he wasn't sure or didn't want to get into detail but I'm just wondering if I can use the exaust, turbo, and intercooler from the TII system? I'm a little broke as I just spent over 4G's on the paint. But I can't stand the power lag in the mid range and I'm going to do a complete build in a couple years. Also I need to change the bolt pattern from 4x110

10-12-2009, 02:11 PM	#1
sikest1 pwrdbyrotorcuzpistnsrweak Join Date: Sep 2009 Location: Cambridge, On iTrader: (0) Posts: 36 Rep Power: 0	boosting a 4-port 13b na I have a T II system available but I want to keep it carb'd

10-12-2009, 08:43 PM	#2
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	not too sure what your asking of us. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

10-14-2009, 01:46 AM	#4
rx4ur7 Rotary since 1972 Join Date: Nov 2008 Location: Tucson iTrader: (0) Posts: 231 Rep Power: 17	Don't let him fool you, I am pretty sure he has had more than his posts. How's it going Dave...

10-14-2009, 11:54 AM	#5
Rotarydave Rotary Nut Case Join Date: Jan 2009 Location: Cibolo, TX iTrader: (0) Posts: 273 Rep Power: 16	pretty good I am currently in Iraq hope to be back in the states in time for 7stock next year as we missed this year. Hoping also to have a couple of primo pieces to take out there as well

10-16-2009, 04:04 PM	#8
Rotarydave Rotary Nut Case Join Date: Jan 2009 Location: Cibolo, TX iTrader: (0) Posts: 273 Rep Power: 16	%7c when he PM'd me about his engine it sounded like he really has a turbo block with NA internals I asked him to post some pics so we could be for certain on what he has, I know you will agree that it will make all the difference in the world when it comes to manifolds and such