Does RB25DE Neo lower intake work with RB25DET Neo Upper intake manifold?

[R34_GT to Turbo]

Looking to do a turbo conversion on my RB25DE Neo

Does RB25DE Neo lower intake work with RB25DET Neo Upper intake manifold? 
 

I found an upper only intake manifold for sale but not sure if it will fit the bottom  half stock intake manifold I have already? Thanks 

Also if your selling any parts relating to RB25DET Neo pls reply below or dm. 

 

[GTSBoy]

I'm not sure if it will bolt up, but....

I'm reasonably sure that the ID of the runners is somewhat smaller on the NAs. So it probably wouldn't be a good match at the flange where the top and bottom meet. So that would be a reason to not do it.

And the skinny runners would be the bit you're keeping, which would be a reason to no do it. You'd want the big runners if you were doing any work to swap stuff.

Why not just use what you've got, like nearly everyone else who has +T'd an NA? You don't need or want the TCS throttle or other stuff that is specifically DET inlet/crossover.

[R34_GT to Turbo]

13 hours ago, GTSBoy said:

I'm not sure if it will bolt up, but....

I'm reasonably sure that the ID of the runners is somewhat smaller on the NAs. So it probably wouldn't be a good match at the flange where the top and bottom meet. So that would be a reason to not do it.

And the skinny runners would be the bit you're keeping, which would be a reason to no do it. You'd want the big runners if you were doing any work to swap stuff.

Why not just use what you've got, like nearly everyone else who has +T'd an NA? You don't need or want the TCS throttle or other stuff that is specifically DET inlet/crossover.

Ok I get you. But isn’t the butterfly intake a headache with the +T? 
see this is my plan so far but please advise me into the right direction. 

Nistune Ecu, 1000cc Bosch injectors, TD05 or TD06 Kinugawa turbo using stock rb25det exhuast manifold, walbro fuel pump unsure of model I think it’s 450/460, spitfire coils and sparks to suit and a R35 MAF sensor and boost sensor. 
 

I was thinking maybe do a cheap eBay plenum $400-500 or try find a stock det neo intake. I think I’d port match it so it’s getting the full capacity but open to advice please.  Thanks 

[GTSBoy]

1 hour ago, R34_GT to Turbo said:

Ok I get you. But isn’t the butterfly intake a headache with the +T?

I've never understood why this bothers people.

1 hour ago, R34_GT to Turbo said:

TD05 or TD06

Surely you'd be looking at a T3 flanged Garrett style thing, rather than a TD?

1 hour ago, R34_GT to Turbo said:

walbro fuel pump 460

You're unlikely to push a +T hard enough to need that much fuel.

1 hour ago, R34_GT to Turbo said:

Nistune Ecu,

If you're not starting with most of the things you need to do that (ie, the bloody ECU!), you're better off just going Haltech/Link. You wil hate life a lot less.

1 hour ago, R34_GT to Turbo said:

I was thinking maybe do a cheap eBay plenum $400-500

No. Just no.

Just turbo it as is.

[R34_GT to Turbo]

21 hours ago, GTSBoy said:

I've never understood why this bothers people.

Surely you'd be looking at a T3 flanged Garrett style thing, rather than a TD?

You're unlikely to push a +T hard enough to need that much fuel.

If you're not starting with most of the things you need to do that (ie, the bloody ECU!), you're better off just going Haltech/Link. You wil hate life a lot less.

No. Just no.

Just turbo it as is.

TD05 or maybe pulsar PSR2867r Gen 2? 
id love a garret but it’s quite out the budget for now and I’m not chasing crazy power. 
 

yeh fuel pump haven’t looked into but whatever works, kind of last on my list. 
 

Nistune because it’s simple but Ik it’s a lot of pain especially as I’m auto +t with the whole seperate TCM etc still investigating that. Haltech id love but once budget tight for now atleast. 
 

finally the reason I’m trying for a plenum instead of the stock intake is I already have a standard Intercooler mounted etc. so the ports are on both sides so trying to not have to go over the clutch fan radiator etc. trying to find a good deal return flow if I don’t than this will do for now I guess. btw any ideas with that, apparently some people have to cut blades to reduce it from hitting the Intercooler piping over the radiator ? Thanks 

[MBS206]

Run the piping how we all have for decades.

Also the duel runners with the +T setup dramatically helps it gets on boost quicker.

Yes, chase huge power it'll become a problem, but you're a long way off when you're already saying an aftermarket ECU is out of the budget.

You also say NisTune as it's simple, and then immediately say it'll be painful, meaning... It won't be simple. It will likely cost you a lot more stuffing around with a Nistune, than just putting a Haltech or similar in.

[R34_GT to Turbo]

Ok so will run the piping over that radiator and no plenum it is. Put that money towards a Haltech and see what suits. Any ideas something like an elite 2000 or 2500 right? My long term goal is 300kw e85 and manual swap and that’s a dream come true. For now will be 200kw and auto

the stock rb25det neo intake isn’t too expensive with throttle body. If I was to have the port matching done, Would that be better than the stock de intake as the det has bigger holes plus has the spots for sensors etc? And suit more long term? 
appreciate the advice? 
 

[GTSBoy]

3 hours ago, R34_GT to Turbo said:

id love a garret but it’s quite out the budget for now and I’m not chasing crazy power. 

I said Garrett style. Not Garrett genuine. And something in the G30 550 range is what you want. Not those pokey little old fashioned T28 sized things.

2 hours ago, R34_GT to Turbo said:

the stock rb25det neo intake isn’t too expensive with throttle body. If I was to have the port matching done, Would that be better than the stock de intake as the det has bigger holes plus has the spots for sensors etc? And suit more long term? 

The intake ports in the head are small. There is little benefit in fattening up the runners and leaving ths actual ports small. Just run what you've got.

And on the subject of Nistune vs Haltech etc..... You know you can control the transmission with decent standalone ECUs these days, right? No need to keep any of that old Nissan bullshit.

Don't get me wrong - I use Nistune on my Neo. But it is a DET, so the number of bodges and workarounds I had to do to make it work in a chassis without ABS, TCS, etc, is quite small compared to the herniated arsehole you will have trying to make it work on a motor that doesn't have some of the things that the turbo ECU wants to see. Just easier to bite the bullet and go aftermarket outright.