Can anybody confirm that the intake plenum from 6a13 n/a engine can be used on 6a13tt engine?
yes i can confirm that it cannot be used
Are you sure? I've got a 6A13 and a 6A13TT in my garage and I just had a look at both. The NA plenum will bolt onto the intake manifold of the 6A13TT fine (the intake manifold looks identical). All that you'd need to do is make a longer elbow to reach the manifold.Originally Posted by psbarham
yes i can confirm that it cannot be used
well it will bolt on to the lower manifold, but its runners are smaller and the plenum is more restrictive.
so unless he is going in pursuit of less power then its a pointless exercise
oooo nice to know that it will bolt straight thru... thanks
The purpose of getting the 6a13 n/a engine intake plenum is not for modification purpose...hehhe...I modified the stock 6a13tt engine intake plenum and i messed up the intake plenum....we don't have this engine in my country and none available except the 6a13 n/a engine. Thats why i am asking if the 6a13 intake will bolt on to 6a13tt engine....
I don't think the 6a13 intake is more restrictive compare to 6a13tt. The runner seem a bit smaller but more restrictive i don't think so...And if i am not wrong the 6a13 n/a TB is a bit bigger that the 6a13tt engine....but we'll see once i installed I will give full report on it....hehhe....
errrr...im no rocket scientist but smaller = more restrictive....
I am not saying that the 6a13 na engine intake plenum is better than 6a13tt intake plenum.this is the available option for me to replace my mess up 6a13tt intake plenum.
[QUOTE=--hoff] I don't think the 6a13 intake is more restrictive compare to 6a13tt. The runner seem a bit smaller but more restrictive i don't think so...QUOTE]
.......
[QUOTE=Subaru ETA]Did I say 6a13tt intake plenum is better than 6a13 intake?no i didnt.
I said the 6a13 plenum is not more restrictive than 6a13tt plenum.
Smaller runner = more restrictive = noticable less power.
That's why also pre-facelift VR4 has 260 not 280 bhp like facelift version. Due to smaller air duction in air intake plenum and throttle body. Bear in mind that difference is even less noticable than VR4 vs. V6.
uhmmmm...not always.
Small runner can lead to higher port velocity which means faster induction (and usually better mix) which means more charge per cylinder per induction cycle which means (if coupled with the right fuelling) more power.
Where you run into a problem is if the runnels are too restrictive at higher power then your turbos are going to have to work harder to raise the pressure sufficiently to pressurise the bore enough to achieve the same peak power.
So (as always) it's a trade off. Narrower runnels usually trade better low end torque & response against top end efficiency: your turbos run hotter, so you generally need less timing and more fuel at the top-end to compensate.
I wouldn't fit the narrower runnels without a remap...you have potential for some nasty side effects.
If you've been porting your factory manifold, then you're obviously intending to port the NA inlet too, which makes the debate a little more academic.
However, I would be really surprised if you've managed to port your factory one so far that it can't be rescued: bear in mind that they don't need to be hugely strong: they're often made of plastic these days.
Are you sure the damage can't be braised up? Plate welded over it?
Turbo_steve:
Yes i totaly agree with you. If I used the 6a13 na engine plenum I will definitely re map the engine. I have haltech e8 on board.
The problem of fixing my plenum is that I just havent found a good welder that be able to do the job right.Thus only visible option is using the 6a13 intake plenum as this plenum is the only available option in my country. This is why i am asking if the 6a13 intake plenum will fit the 6a13tt engine.
here is a thought,
as the n/a V6 throttle body is wider than the Turbo one.
Could you get a V6 throttle body and plenum and cut the throttle body mating bit off both plenums and weld the V6 one on to the turbo one using the wider throttle body.
but would this really make any difference.
Bye for Now!
Im not sure what services etc you have near to you, but I had my manifold modified as part of my project. None of my regular contacts were prepared to weld the cast aluminium, so I ended up taking it to a welding school and getting on of the instructors to have a go at it. Ended up with a nice tidy result. That might be an option for you to look at?
Would be interesting to see if using a NA manifold makes much of a difference, good or bad, as no one has done it as yet that i know of.
2/1/06Rangikapiti Pa - Mangonui, Northland
it was just a thought.
The bolt pattern is the same on both I think. So all you'd need to do is bore out the tt plenum a bit.
so is the V6 throttle body only just bigger than the turbo one.
The diameter of the center bore of the two throttle bodies is different by about 2-4mm or so.
Sorry, but I think this is wrong.
The prefacelift manual VR4 has 280BHP. The prefacelift auto has 260BHP but that is due to the ECU setup and not to do with different engine components.
'97 Manual Legnum in silver with some subtle mods
My first VR4 - '97 Legnum Dark Green & mean ...it was love at first sight - now sold
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