alright some one i work with is dumping a KA24DE i belive it is for a new engine from Nihon....and if i rember correctly isnt the TB a bigger/better one that will fit a 2nd gen after some machining?

or am i thinking of the wrong engine?

 

Nihon? You want to use the KA24DE from the 89-92 Stanza or 89-92 240sx.

S

 

and the advantage was bigger more responsive?

what do i do about the TPS and what needed machining again? i cant find the old post any more

 

Better throttle response, better flow. Comes in handy if your planning boost. You will need to swap the TPS with your existing one. The intake manifold will need to bored to match the TB. Probably best to do it with the IM off the car, but if you can't do that, you can stuff a bunch of rags in the TB, and pray to god you don't get shaving in there.

S

 

and what would happen if i didnt bore it out and just mounted it?

would it squeal like a pig?

this is just the first major thing like this i have tried with this car, its all tweaked and tuned back to stock specs and everything will befixed/replaced after agust 5th so i figure i should start on something a little fun atleast

i'm kinda hessitent about taking the intake manifold off....the only kind i've taken off are old chevy ones and theyre easy because the bolts are easy to get to and the gasket are cheap to replace.

i'll have to check out the bolt situation tommorow, if i do get it off is there any thing i should check while its off?

 

Well the intake manifold inlet will still only be the size of the stock TB, so you'll basically only be letting in the same amount of air as with the stock TB.
When the TB is off, you'll want to clean out as much of the intake manifold as you can, if you decide to not take off the manifold. Try using Castrol Super Clean, and get a toothbrush to reach into the manifold. If you do take it off, you should definitely clean as much of it as you can while it's off.

 

Yeah, after the TB, the inlet for the IM can only let in "x" amount of air. The only time the TB effects this amount is if the TB were smaller. In order to get the benefit of a larger TB, you'd have to make the inlet bigger.

S

 

i was thinking more along the lines of a shape like this:
_______
........@|______
........... -----(air)-->
_____@|


(@ = Noisy Swirl o' Air)


causing a noise where it came to the manifold

 

nice diagram, but u have to bore out the collector of the t/b because if u dont bore it out u whount get the advantig of of the biger t/b and u will start collecting ditr and other nasty stuff in the rig(the part that u didnt bore out)
and it woud be a good idea to remove the manifulde to to the boring out job and to clean it, cuzz when i took my manifoul off i saw a thik a$$ leyer of gunk(dirt and carbone bid up) i couldnt even take it of with my neals i had to use a screw driver it was lik about the thikness of a cd 1/2. i took it all of with a presur i had. mean a$$ difrence after all that cleaning and the bigger t/b .

 

alright well i was just wondering if the thing would blow to heel i gathered that it'd be pointless to directly bolt it on with out doing any thing.

i know i have major bulid up, i can see the carbon on the airbix side of the existing throttle body arround the edges, i did just run some heavy duty injector cleaner though.....directly fed into the intake through the vaccum lines....its major harsh stuff but it did help.

the guy will be at work tommorow and i'll see if its the right one, he is dumping a ka24de though

 

alright its from a 1990 240SX and hell give it to me for $50....

only one problem now and i'll make another thread about it when i get stuff together now....lets just say it involves a tow truck

 

I have a TB from 90-92 KA24E stanza, 60mm bore, w/ cruise cable cam in storage.. if you want it, let me know, i'll let u have it for the price ($50) offered shipping included. just need to empty the parts bin.

the KA24DE TB is not much bigger than the KA24E, and if not mistaken different bolt pattern..

 

thanks for the offer but i dont know whats happening as of now, the guy quit where we work or used to work at but i do have his phone number and i'd like to do with out having to wait for shipping because his is here and in the valley now and when my engine comes apart for the cylinder heads i wont have to wait for it to get here...but then theres the cost of the timing belt water pump and cylinderhead repair or replacement...which so far has gotten up to arround $2000

 

ah, i c..well, shipping from WA to OR should be a quickie though...

what actually happen to your max? any thread I should check out?

edit: found the other thread..

 

TB's are all well and good. I want to put that Pathfinder intake manifold on my VG. It would be perfect for a turbo application.

Yes I know it prob wont fit. Unless you like dents in your hood!

Hood scoop!
They look but serve the purpose

 

You rtalking about a 70mm VQ pathfinder one? I don't think clearance is the issue. IIRC, you can only bore out the inlet for the TB just beyond 60mm, and that's it, there is nothing left to bore out if you get out that far. You could do an adaptor plate, but that would be pretty much pointless. You'll have 70mm opening that has to shrink back down to 60mm, might as well just stick with a 60mm one.

S

 

No man. The intake off the last VG for the pathfinders. I don't know what the TB inlet was but, on Z31.com theres a guy who put one on his VG. They said that the intake path is more efficent for the turbo application. But there is a problem with clearence for that one. But its nothing that cant be fixed.

 

hmmm, it must be a 60mm tb. I know a lot of Z31.com guys have been doing the 240sx/stanza 60mm TB. I'm guessing you don't have to swap as much on a pathfinder one. For some odd reason I thought you we're referring to the VQ Pathfinder one which is 70mm. Some boosted 4th gen guys have been using that.

S

 

this is a little off topic in my own post but has any one tried any thing with a VG33ER?

 

I've had thoughts of turboing one...but decided to turbo my current motor instead. Be nice to drop in the VG33ER, but I don't think the S/C and manifold will clear with out some modications. Be a nice upgrade to 210hp right there though.

S

 

ok, question... is there anything on the VQ pathfinder TB that matches the VG30E maxima intake plenum? such as bolt pattern?

 

You would have to make an adapter. Even if you could put the VQ35 70mm TB on, it's gotta narrow back down since you can't bore out the stock IM to 70mm IIRC. Unless someone is willing to try this, I'd stick with a 60mm TB.

S

 

well, the engine in the other car is a KA24E, and it came stock with 60mm on the IM... after some measuring, I found out it's bore-able to 70mm max.

for those really after the 70mm TB in their 2nd gen, I think you can go to the junker, pick up a KA24E upper IM, and cut the flange off. And transfer the flange over to the VG30E IM by welding. (welding cast aluminium is a pain with all the dirt packed in the recycled aluminium)

 

It sounds a bit involved for that work. I still think a 60mm is the easiest option if anything.

S

 

why not just take the manifold off a stick 6 cone K+N filters on it and call it good, and route some of the air through the first one

 

that 2nd paragraph is just for those desperate enough to do it.. come to think of it, i know a sciroco guy who've went further than that... chopping off 1 of the runner out of an audi 5 cylinder engine so it bolts on to his 20v engine, which was turbocharged...holly short intake runners.

now now, Niku-Sama that's really is an unexpected response.

 

hehe, VG with individual T/B. Drool.

S