OGFC

Hey JP2LA, In the pic of the LIM you have up, an S4 or S5? Cause it looks like you cut off and blocked a bunch of other stuff on the LIM.

Can anyone tell me if there is a huge difference between this LIM or if i were to just fill, port match and use the the stock t2 lim?

HAILERS

With the JP2LA it looks like you could still use the stock metal gasket. Meaning there would be material under the gasket at the area b/t the top and bottom hole where if you fill and match, there will be no material under the gasket i.e the gasket won't seal right in that area.

OGFC

On my LIM i have things here

HAILERS

Three jpg. One of the turbo manifold with six port gasket below it. Another of the gasket overlaying the turbo manifold prior to working on it. And the last showing in Blue the area that has to be filled in with *something* that won't someday flake off.

The JP2LA looks pretty good.

And notice how the metal gasket covers up the primary air bleeds. Not good.

Druken

If it has been tested to work, I am interested in purchasing one Japan2LA.

The LIM looks pretty well thought out and by the pictures the craftsmanship looks good. My question is, if we use this then will the vacuum hose routing be exactly like the turbo2 FSM manual? Would the air pump still be required to open the 5th and 6th ports?

Chaotic_FC

i'm almost done with mine
heres the thread:
https://www.rx7club.com/2nd-generation-non-technical-pictures-198/my-6-port-turbo-rebuild-715602/
heres some pics of the engine:

OGFC

all i wanna know is wtf is this and if it can be blocked off.

Chaotic_FC

i'm wondering wtf it is the arrow is pointing at..

HAILERS

I"d remove both red rectangles and the arrrow also while I was there.

OGFC

HAILERS

Oh. You mean the opening on the aft end for the EGR. Yes, cap it off, block it off.

carl_9_9

so what is a s4 turbo lim suppose to look like on s4 na

Japan2LA

iTrader: (256)

Guys, the reason my LIM looks different is because it is a JSpec LIM. It does not have any of that smog stuff. The manifold is all tig welded, port matched, and then faced off. I have tons of TII LIM's, but they are all Jspec...which will work. I have both S4 and S5 so you can tell me which you want..

You can also source you own TII LIM and send it in to be modified. I have done a few USDM LIM both S4 and S5, yet I do charge more as there is more weld work on those..and they are a bit more of a pain to work on.. Reason... I built a fixture to hold the LIm so that I can hold it on the mill while during face off. The USDM LIM's dont fit in my fixture due to the EGR.

Anyway $257.50 delivered for a modified Jspec TII LIM or S5 your choice.

Or send me your USDM S5 or S4 TII and I will modify and ship it back for $246.00
Or source your own JSpec lower and I will modify it for $206.00

HAILERS

That manifold looks like The Way to Go. Too late for me since I've already done mine, but if I hadn't, I'd have bought one of the Japan2LA.

TitosToy

+1

auricomXL

i am working on a 6-port turbo set up as well (S5). i was planning on leaving the intake manifolds as they are becasue i would like to try and make use of the VDI and aux ports. the turbo i am going to be using is a bit too large to fit right next to the engine anyway (even with the intake manifold completely gone), so the exhaust will be ducted from the ports to the front of the engine where i will squeeze in the turbo.

i know the effects of VDI and aux ports will be *considerably* less noticable when the engine is under boost, but i'd like to try it all the same and see what i get. plus, i don't want to take apart this engine block if i can avoid it (unless anyone wants to sell me a rebuild kit on the cheep).

has anyone tried anything similar to this? Aaron, i have read through your "almost complete guide to turbocharging the NA 13b", and i wondered why you didn't try relocating the turbo and keeping the intake manifolds stock? i'm sure you had a few good reasaons, but i was wondering if you could elaborate on that?

flipstar

iTrader: (14)

If everyones goal here is to turbo their 6 port... I have to ask one question...

Why not use your NA UIM and LIM and just pressurize the damn thing with a bolt on turbo?

Sure the air intake tracts arent going to be the same, but couldnt fuel tuning correct this?

I do not claim to be an expert at all but if I were going to do this (im too cheap for sourcing TII manifolds) this would probably be my first step...

Japan2LA

iTrader: (256)

If you want to read up on the original thread, here is the link:
https://www.rx7club.com/showthread.php?t=650267

Japan2LA

iTrader: (256)

The reason:

It is easier to get your Na-T project up in running this way... This route works on any 6 port engine...plus TII parts are easy to get and cheap...

flipstar

iTrader: (14)

BUT, from a purely technical standpoint, using stock NA manifolds for a turbo application is still POSSIBLE?

djmtsu

iTrader: (3)

The turbo will hit the LIM using the stock manifolds.

That is why this is easier to use. SEARCH!!!!!!!!!!

auricomXL

the turbo i am going to be using is a fully instumented BorgWarner model. i do not know the exact model number off hand, but i have all the maps for it. i got it from an engine at work. it is the smallest turbo i could get from work, and the compressor HOUSING is roughly 8 inches in diameter. i can't fit this thing next to the engine without LOTS of fab time.
for these reasons i will have to locate the turbo toward the front of the motor. i know this is not the best spot in the world. the longer headers will casue a bit more boost lag, and the extra surface area for heat transfer will lower the turbine inlet temp. i'm not so sure that is such a bad thing as this turbo is for a 9.0L diesel engine and has no water jacket. if this is a problem i will cool the turbo with a air duct on the hood and/or insulate the header with a ceramic material. assuming one has to relocate the turbo anyway, shouldn't the stock intake manifolds be cool? i obviously will make everything air tight...

auricomXL

ok, i read what you had to say. that looks like a very nice option. it looks like a good method to put a turbo on an NA. but i don't think it's the only option, and it's probably not what i want to do. i am somewhat interested, but i think i could make this work without purchasing a part like this. in any case, the only thing that strikes me as being a bit questionable about this whole thing (as well as Aaron's similar method) is the intake port's long duration at low RPMs. since both you and Aaron eliminate the ability to control the "high speed" aux. ports, doesn't that hurt low end torque quite a bit?
you have this column of air that has a certain amount of inertia and the rotor is moving around so slowly under 4000 rpm, it has lots of time to bump back out the aux. ports...
not to go into details about this, i'm sure we all have an adiquate undertanding of how and why the aux. ports work. i would guess that your (and Aarons) method works well at high rpm, but i would also guess that your low end could be improved if somehow you still had control over the aux. ports.
easyer said than done i know...i'll let you know how that goes.

i'm not trying to take anything from the work you guys have done. in fact, i have goten a lot of info from Aaron indirectly that has helped me quite a bit. in the same vein as your efforts to swap and modify a TII LIM, try to have a little understanding when people want to discuss and attempt to make this work with a stock NA LIM. i want to do this to retain use of aux. ports especially, i can always make a turbo fit some place if it absolutely positively has to...

Japan2LA

iTrader: (256)

No worries.. Its your car, build it the way you want...