RX200013B

looking to see what everyone has done with there 6-port kegs? as i am rebuilding mine, wondering what ports/combo's you have tryed with the 6-port.

please list port style,intake,exhaust, ecu?

ArmyOfOne

iTrader: (12)

I did a full bridge on one, long primary header, holley 600 and racing beat intake. 225 to the wheels.

RX200013B

posst pics if you have any? thanks

lonetlan

Pineapple Racing streetport and 6-port inserts, long primary header, EFI, Stock ECU, and removed extra butterflies in intake. Idle'd like stock, "felt" better than stock. I pulled it apart though because something suddenly came up.

S1sevenNZ

Yes i will be doing this soon too, Just got to decide what port to go with, And Somthing that will make at least 200hp atw or more ...... Can you get this out of a S4 n/a block eaisly or is it better to start with a S5 n.a motor ??

My set up at the moment is a S4 13bt block, Mild ported, Secondary bridge, Stock internals and fly wheel, MT4 ecu, Locked distributor, Stock throttle body, 2x 880cc injector's, Bosch coil's, 9mm leads, Goes ok for now, But defintly want more with out going turbo, Hasn't been dyod just road tuned.

RW-7

iTrader: (56)

Just build this 6 port;
S5 light and high compression rotors, turbo housings,
Atkins 2mm 2 piece apex seals,
solid corner seals, S6 corner seal springs,
cryo treated side seals and springs,
higher oil pressure, S5 turbo oil pump, weber oil jet,
extended street port on both intake and exhaust,
Pineapple 6 port inserts, ported and modified throttle body, port matched and semi polished intake runners, turbo secondary fuel injectors, MOST emmisions removed, Rtek 2.0,
RB header, Bonez high flow cat, HKS high power muffler, Innovate wibeband, Exedy 2 clutch, turbo release bearing, and so on...
I just got a good tune on the motor and need to get a few more things done to the car before it is road worthy. Can't wait to get it broke in and on the dyno for a good tune.

fidelity101

iTrader: (11)

S5 NA large streetport irons
S4 NA large streetport housings
turbo inserts
s5 rotating assembly
aluminum flywheel
mikuni phh 44 carb
s6 side seal springs
s6 corner seal springs
RA classic 2 piece apex seals
premix
RB DCOE carb adapter on
port/gasket matched S5 NA LIM
stock dizzy ignition
modified oil pressure regulators
no aux ports
RB street dual exhaust

dyno soon to come.

peejay

The last one I did was series 4 end housings with the port opening time opened up to 10.9 (I think) millimeters away from the coolant seal groove. Just scribed a line based off of the seal groove and went to town on it. Closing time was not affected much, the line was just "dressed" so that the closing side seal didn't swipe across it end-first. Center housing was a Turbo II housing ported similarly. Rotor housings were the same S4 TII ones I'd been running on my old TII block. Intake was stock S4 N/A with the actuator sleeves and bushings removed.

It ran a lot nicer than any other 6-port engine I'd ever had, but it still felt "soft" compared to the half-bridge, of course. Powerband wasn't peaky but you could still tell that it preferred to be revved high, unlike the bridge. It only ran for about 400 miles before I killed it, so no quarter-mile tuning or dyno time, just some quick drivability and WOT tuning on the street.

My latest one is put together but it won't be running for a while. It's a GSL-SE block that's been converted to four port by putting the actuator sleeves in backwards and securing them so they can't move. Primary and exhaust ports are untouched. Secondary porting is.... unusual.

RX200013B

i thought about blocking the aux ports too! see what torque you can make?
keep us informed on the progress?

S1sevenNZ

Dyno sheets woulld be mint, Looks like i will build one from using two motor's, The 13bt block i got and a 6 port block.

Can some one tell me what intake manifold would suit say 9000rpm and flow close to 200hp ? or which manifold i have listed would be good for at what rpm ?

S4 n/a
S5 n/a
S4 13bt (just with a pod filter)
S5 13bt
IDA manifold

Is there anymore pic's around of engine bay set up's with 6 port's or have you guy's made cold air intake's ?? Cheers.

peejay

The Turbo II intake manifolds do a decent job of clearing the turbo and the intercooler, but personal testing suggests that they have horrible flow.

If you don't have a turbo or an intercooler, then the manifold is mainly useful as a wheel chock or a doorstop. Match porting to a 6-port WILL make the flow even worse.

200hp is well within the realm of possibility for the S4 intake. I was putting down a bit over that with one with a marginally good exhaust system. ITS racers make close to that with good exhaust systems and no porting.

S1sevenNZ

Sweet, Cheers PJ, So if i built my motor say like this :

13bt centre plate street ported,
13bt housings with a good size exhaust port,
6 port front and rear plate with the secondary and aux port joind together as one big port,
S4 n/a internals balanced,
10 pound flywheel,
S4 n/a intake manifold with ported throttle body into a cold air intake,
2mm (3mm??) carbon seals,
Exhaust to suit, (noise or drivabillty dosn't matter by the way)
Microtech MT4,
2x 880cc injector's,
Lockd distributor,

I should get cose to 200 rwhp ??

Also hope to get a S4 n/a gearbox and a new diff set up to with eaither a 4.4 or 4.8 head.

Sorry for hijacking your thread RX200013B.

lonetlan

Don't?

goc

iTrader: (1)

Hi

I have gone mild due to racing class restrictions for Roadsport C.

Nothing more than:

1. Racing Beat Road Race Exhaust System
2. Two MSD 6A boxes with Blaster 2 coils and Magnacore cables
3. Removed the air pump unit
4. K/N Filtercharger Intake Kit

Dyno result=168hp (standard ignition, i.e. before adding the MSD set up)
With the MSD set up it should take me to between 170-175hp, but not much more.

Dyno run:http://www.wankelregistret.se/forum/...80919_146k.jpg

Pictures of under bonnet:http://www.wankelregistret.se/forum/...01916_146k.jpg

If and when it breakes down I will go porting as mad and go to the next racing class. I have an expert nearby that will perform the porting and everything that comes with it.

Best regards
Goran

peejay

Don't go changing the bar, now. I don't know about 200 wheel horsepower.

peejay

Why not? The aux ports close extremely late. Arguably, they close too late to make any useful power when you consider the other limitations of the engine. In my case, I'm still using the stock 3mm iron seals so a powerband that goes from 6000rpm to kaboom is kinda scary to have.

Plus, once you get up to those kind of RPM levels, the GSL-SE intake manifold is really choking flow, so you end up having ports that don't make power at the low end and an intake manifold that won't flow well at the high end, which makes for an engine that feels soft everywhere. The GSL-SE intake is really starting to get tapped out at 175hp. I can make that much power at 6000rpm... why should the ports close so late?

I'm playing to the intake manifold's strengths - small runners that are resonance tuned for the midrange. So the ports need to be timed for the midrange. Fortunately, for my application, midrange is all I care about.

When I'm done with this one, I have almost everything I need to stuff what's left of my 2mm-seal rotating assembly into an old-style 13B 4-port. Lots of 12A end housings around here, plus some GSL-SE center housings so I can still use OEM-like fuel injection as well as my FC subframe, oil pan, and front cover.

Plus, having the coolant seals in the rotor housings instead of the side housings means you can go a lot larger on the bridge port before you have to cut the coolant seal.

S1sevenNZ

.

Ok haha, Mmmm mite have to go PP then .... noise, drivabiltiy, fuel milage is no concern as the car dosn't get bugger all use, just weekend fun, I will do some more searching, Thank's.

S1sevenNZ

Done some searching around, A good read here : http://www.ausrotary.com/viewtopic.php?f=3&t=115759 lot's of pics etc.

6 port bridge :

S1sevenNZ

4 inch intake ?

dbragg

iTrader: (7)

Not to change the subject, but there are some crazy ports in that thread, and I would love to see how they worked out.

bumpstart

i match port the outside end of the 6 p runners into a merged type
to a modded t2 LIM
use stock secondary / aux porting
add a mild port t2 centre plate ( late close )
use turbo housings
and turbo oil pump
and have trialled all types of rotor combos
- all boosted with V or T trim highflows

-have done for past ten years now
IMO this is the best combo of port without resorting to a bridge
power delivery compared to stock t2 is down under 2500 rpms
( as expected )
but delivery is smooth and flat without any vice above 2500 rpm
and doesnt run flat at 6500 rpm like t2 does or 7500 rpm like mild 4 port versions
the 6p hybrid makes linear delivery to past 8000 rpm and still going when i shift up

Aaron Cake

iTrader: (1)

Gave mine a small bridgeport and turbocharged it. Microtech LT8s, 720/1600CC, custom upper intake, GT4088R 1.06, 3" to dual 2.5" exhaust, 24 x 14 x 3 intercooler. 400 RWHP at 13 PSI, 500 RWHP at around 16 PSI.

Here's the YouTube video of the latest 6 port engine I am building for my '76 Cosmo:

http://www.youtube.com/watch?v=y1Gy5sVMK3o

Very mild porting, designed to run a GT3076 with functional aux ports. Going for about 300 RWHP and 300 FT-LBs of torque with great low end and midrange (not too worried about the high end).

Oops, just realized I posted in the NA forum...

MPM

I remember this engine. It was a Paul Yaw built engine. Mildly ported TII with N/A rotors. SDS fuel computer and a 1st gen distributor helped this car put just over 200hp to the rear tires. Paul had one of his headers on it.

Fc3sFREAK415

i wanna see more!!!!

1973rx3

I took an 87 and made it a full bridge port utilizing 5 (primary) and 6 (secondary), 1/4 by 3/16 oval holes, covered the egr holes using round bar and a mig, street ported primary and secondaries, removed exhaust baffles and ported. Primary and secondary oil regulaters pressure increased. Premixed OMP removed. Used racing beat street port full exhaust. Jaytech intake with plenum, Holley 600 with extended bowls. MSD's and 2nd gen coils (leading direct fire). Dynoed at a shootout made 178 rwhp. Daily drove my SA until stud holding air filter came loose and messed it up. Now I have 91 external and gslse internals full bridge ported (3/16 eye brows) rest is same to that of my previous engine. I now use a racing beat intake no plenum 4bbl to spreadbore adapter and a holley 650 spreadbore with extended bowls. Same ignition and exhaust as before. Yet to dyno, but the low, mid and high end are just incredible and using about a third of the fuel compared to the previous engine.