6 port turbo
Thread Starter
Learning da ropes
Joined: Nov 2005
Posts: 64
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From: Berkeley
6 port turbo
i got a t2 that i cant get to start. tried a lot of things, but have given up on it. I have read threw a couple of post and thought that it would be wise to hear what you guys have to say.
I want to purchase a clean s4 rx7 and bolt the turbo and other parts to the na motor and run low amounts of boost. I would run the ecu with an rtek 2.1 and bigger injectors. I have a 255lph fuel pump going in as well. Is this easier than what a lot of people go through?
let me know from experience.
I want to purchase a clean s4 rx7 and bolt the turbo and other parts to the na motor and run low amounts of boost. I would run the ecu with an rtek 2.1 and bigger injectors. I have a 255lph fuel pump going in as well. Is this easier than what a lot of people go through?
let me know from experience.
the na motor has 6 intake ports, the turbo has 4. the stock t2 manifold wont clear the NA intake manifold. you will also need to plumb the coolant and oil lines for the turbo.
Honestly it's not that hard. Just do some searching. You need to drill and tap the middle iron, use the t2 front cover, or drill a whole where the oil return is. Also port the t2 lim for the n/a 6 port block.
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Um, OK.
You need to decide how you want to do this. There are a few basic choices:
1. Use a spacer for the turbo manifold and use NA intakes.
2. Use TII intakes but port match to 6 port block.
3. The best way is to make a custom exhaust manifold, keep the aux ports working and use a turbo that doesn't suck.
How much reading have you done? Because there is more information on this topic then any other.
You need to decide how you want to do this. There are a few basic choices:
1. Use a spacer for the turbo manifold and use NA intakes.
2. Use TII intakes but port match to 6 port block.
3. The best way is to make a custom exhaust manifold, keep the aux ports working and use a turbo that doesn't suck.
How much reading have you done? Because there is more information on this topic then any other.
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dewey
Joined: Sep 2007
Posts: 580
Likes: 1
From: Minnesota
a hint:
aaron cake
the guy who wrote:
"The (Almost) Complete Guide To Turbocharging The Naturally Aspirated Second Generation RX-7"
i read up on his stuff, really interesting... and i am in a bit interested in seeing the 6 port motor turbocharged with working aux ports. i would think the powerband is way higher than the T2. but i'm still a long ways from any of this.
keep reading
aaron cake
the guy who wrote:
"The (Almost) Complete Guide To Turbocharging The Naturally Aspirated Second Generation RX-7"
i read up on his stuff, really interesting... and i am in a bit interested in seeing the 6 port motor turbocharged with working aux ports. i would think the powerband is way higher than the T2. but i'm still a long ways from any of this.
keep reading
Thread Starter
Learning da ropes
Joined: Nov 2005
Posts: 64
Likes: 0
From: Berkeley
so if i were to use an aftermarket turbo like a t4, and use one of those ebay manifolds, do you think it would work. how much space is needed between the turbo and the turbo manifold?
Full Member
Joined: Jul 2008
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From: Renton, WA
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
There aren't too many aftermarket manifolds that allow clearance for the NA intakes.
HAILERS
Joined: May 2001
Posts: 20,563
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From: FORT WORTH, TEXAS,USA
Pictures in post #9 here: https://www.rx7club.com/showthread.p...light=JAPAN2LA
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Oh, I'm sorry. I missed that T4 statement. T4 turbos are considered "large frame" turbos, so most T4s properly suited for the rotary will make 250 HP while they are still asleep. A T4B will generally do 250HP at 8 PSI or so. My GT40R (yeah, a bit bigger then most...) makes about ~420 at 13 PSI.
in my 6 port turbo crusade i personally went with the,
port match the t2 intake manifolds,
use t2 electronics, ie ecu, afm, boost sensor,injectors fuel pump... so on...
i had the rtek 1.7 and an safc. ( 2.1 would deff be better)
for oil return i taped into the oil pan,
for feed, i used a fitting to go into the stock oil pressure gauge port under the oil filter( u can use a T to retain the stock gauge, or an aftermarket p gauge.
ohh yeah for water feed return, i used T where the heater hose leaves the block by oil filter, and then where it returns down by the radiator.
port match the t2 intake manifolds,
use t2 electronics, ie ecu, afm, boost sensor,injectors fuel pump... so on...
i had the rtek 1.7 and an safc. ( 2.1 would deff be better)
for oil return i taped into the oil pan,
for feed, i used a fitting to go into the stock oil pressure gauge port under the oil filter( u can use a T to retain the stock gauge, or an aftermarket p gauge.
ohh yeah for water feed return, i used T where the heater hose leaves the block by oil filter, and then where it returns down by the radiator.
Thread Starter
Learning da ropes
Joined: Nov 2005
Posts: 64
Likes: 0
From: Berkeley
for oil return i taped into the oil pan,
for feed, i used a fitting to go into the stock oil pressure gauge port under the oil filter( u can use a T to retain the stock gauge, or an aftermarket p gauge.
ohh yeah for water feed return, i used T where the heater hose leaves the block by oil filter, and then where it returns down by the radiator.
for feed, i used a fitting to go into the stock oil pressure gauge port under the oil filter( u can use a T to retain the stock gauge, or an aftermarket p gauge.
ohh yeah for water feed return, i used T where the heater hose leaves the block by oil filter, and then where it returns down by the radiator.
And just to update everyone... i just got a 91 s5 coupe. so i will be ripping all the turbo stuff off my s4 t2 to use on the s5 n/a. I gotta swap the whole driveline from the t2 anyway because 91 didnt come with lsd, so that covers the whole "your n/a driveline wont handle the stress from the turbos power and torque".
im trying to avoid the spacer on the exhaust manifold and want to clarify something. if i use japan2la's modified intake manifold will a bnr hybrid have clearance? and does japan2la modify the 6 port manifolds for an s5 so that the aux ports work? Im trying to keep my low end response.
my thoughts are clustered right now, so sorry for the way the response is written.
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
People who say that the drivetrain won't handle the stress of a stock turbo are...well, I don't quite know. It's safe to say they have never tried because my NA drivetrain took over 400HP for two years before finally letting go this spring (after I damaged it at the track).
Japan2LA's manifold is just a TII manifold that has been port matched to the NA block. Thus outwardly, the engine appears as a TII engine. Any TII parts will fit. And consequently, there is no chance of making the aux ports work.
Japan2LA's manifold is just a TII manifold that has been port matched to the NA block. Thus outwardly, the engine appears as a TII engine. Any TII parts will fit. And consequently, there is no chance of making the aux ports work.
I'm still wondering why you would choose to swap your t2 parts onto a 6 port engine when you already have a t2. Just cuz it won't start? I would make sure that engine is totally fried before you go spending money and fabbing stuff to turbocharge a 6 port.
Even if that engine is toast you could spend a similar amount of money+your core for a ported 4 port engine for your t2.
Even if that engine is toast you could spend a similar amount of money+your core for a ported 4 port engine for your t2.