6-Port Power - Page 2

rotaryracer · 01-01-2010, 11:22 AM

This is interesting. I was running an early model 13b 4pt in my 83 race car. DynoJet read 177bhp @ 8000 w/ 127lbs torq @ 4500. 48 IDA Weber dawn draft. I picked up a 4pt Renisis hoping to get 200bhp w/side draft Mikuni. Unfotunately we broke our race motor before we completed the intake for the Mikuni. We have a couple 13b 6pt motors. Found a side draft intake @ R.B. for a $150. Not in the budget yet. Borrowed a 6pt intake and an Edlebrock carb jetted for a v-8. Wondering what kind of hp numbers to expect. From what I see here, should be close to race motor. Don't want to rev 8000 with a stock motor tho. Porting is not in the budget with race motor rebuild. Plan on using 6pt motor as backup until race motor is ready.

NoDOHC · 01-08-2010, 09:26 PM

I think that 200 bHp is easily doable out of a 6-port. This thread is talking about 200 WHp (which is more like 240-250 bhp). I got 155 WHp out of a bone stock 6-port (mechanically stock anyway) with 190,000+ miles, this is almost 200 bhp (about 190).

I see you mentioned Dynojet, was this dynoed at the wheels, or the flywheel?

177 WHp is good out of an '83 4-port. 177 bHp is average.

I have only seen carbs on 12A rotaries, and have never attempted to make additional power with them. Fuel injection is so much easier to tune precisely (although initial startup is much easier with the carb).

RX200013B · 01-22-2010, 04:56 PM

i can see them

and no i cnat sepll

FerociousP · 01-22-2010, 05:47 PM

sooo... ITBs...

interesting setup, although what are the differences between that and a holley manifold? ports are bigger i guess...

01-08-2010, 09:26 PM	#2
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	I think that 200 bHp is easily doable out of a 6-port. This thread is talking about 200 WHp (which is more like 240-250 bhp). I got 155 WHp out of a bone stock 6-port (mechanically stock anyway) with 190,000+ miles, this is almost 200 bhp (about 190). I see you mentioned Dynojet, was this dynoed at the wheels, or the flywheel? 177 WHp is good out of an '83 4-port. 177 bHp is average. I have only seen carbs on 12A rotaries, and have never attempted to make additional power with them. Fuel injection is so much easier to tune precisely (although initial startup is much easier with the carb). __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

01-22-2010, 04:56 PM	#3
RX200013B Rotary Fan in Training Join Date: Nov 2009 Location: idaho Posts: 37 Rep Power: 0	i can see them and no i cnat sepll __________________ ULTIMATE N/A

01-22-2010, 05:47 PM	#4
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro Posts: 1,046 Rep Power: 19	sooo... ITBs... interesting setup, although what are the differences between that and a holley manifold? ports are bigger i guess... __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

01-01-2010, 11:22 AM	#1
rotaryracer The Newbie Join Date: Dec 2009 Location: Tulsa,Ok. Posts: 20 Rep Power: 0	This is interesting. I was running an early model 13b 4pt in my 83 race car. DynoJet read 177bhp @ 8000 w/ 127lbs torq @ 4500. 48 IDA Weber dawn draft. I picked up a 4pt Renisis hoping to get 200bhp w/side draft Mikuni. Unfotunately we broke our race motor before we completed the intake for the Mikuni. We have a couple 13b 6pt motors. Found a side draft intake @ R.B. for a $150. Not in the budget yet. Borrowed a 6pt intake and an Edlebrock carb jetted for a v-8. Wondering what kind of hp numbers to expect. From what I see here, should be close to race motor. Don't want to rev 8000 with a stock motor tho. Porting is not in the budget with race motor rebuild. Plan on using 6pt motor as backup until race motor is ready.