well, I've been working on a turbo project for about 3 months now, and It's finally coming together, hopefully within a week or two.

what I have:

t4 - 70trim
blitz super sound BOV
35mm external wastegate
Apexi SAFC II
HKS muffler
24x12x3 core JDM Intercooler
300zxtt injectors (hopefully)
2.5" intercooler piping
3.5" exhaust
I'm making my own headers.

the header part is going to be hard.... but I have people to help me do it.

as I've said every day I drive for the last 4 months, I can't wait till I get my turbo!

 

J/K...can't wait to see.

 

Is the plumbing done or you've been working on getting parts for the past three months?

3.5" exhaust.... holy overkill batman...

 

Yeah, I wonder how that fits over the rear beam.

 

Ya 3 inch exhaust should be plenty!

 

problem is, the turbo exhaust outlet side is 3.5 inches... so I don't want to downsize.... not with a turbo that scares the $hit out of everybody when they look at it.

I'll see if I can get my hands on a digital camera tomorow.

I'm working on the plumbing right now, I suck at welding though... weld - grind - weld - grind... and so on.

I just missed the ebay auction for 370cc injectors. I want to kick my own a$$. but that won't really do any good.

 

That turbo sounds really big especially on the exhaust side. What is the A/R and what kind of boost are you planning on running? Make sure you have a good manifold design or else there's going to be ungodly amounts of lag. Is it a V-band setup b/c I thought most T4's stopped at 3" bolt on.

 

you know,.... don't quote me on that 3.5" yet, I'm doing all of this in my friends garage, and, well.... tape measures are oddly hard to come by. I'll double check this, and maybe i'll end up with 3" exhaust. This is why I'm spilling the beans, I'm putting all this together myself, and I'm still working on the details. Any advice from those of you who have gone through this process would be great.

the a/r on the exhaust is .84 and the compressor is .70

I'm expecting lag, but that's ok, b'c I can't get grip as it is in 1st.

does anybody know if dsm injectors will fit the VQ? stock injectors ar high resistance (same as dsm). my friend is going to get ahold of some and we will compare, b'c DSM injectors are dirt cheap.... somthing insane like $60 for 4 450cc injectors. heck, at that price who wants to buy Nismo 740cc's? we'll see what happens and I'll keep you all posted.

As far as the manifold goes, I'm figuring that I will have less lag than if I do a reverse y-pipe, b'c the distance is much shorter, and I will have better collectors than the stock headers. a roll of exhaust wrap is on the order list as well, as I'm sure it will help hold temparatures higher untill it reaches the turbo.

I'm not sure what kind of boost I really want to run in all, I know that the turbo will support at least 650bhp, but for starters, my wastegate spring is set for 8psi. I want to get the car boosted and tuned at around there before I even think about total HP gains. The only boost controller I've seen was hooked up wrong and it ate a talon turbo motor for dinner, well, the boost gauge was reading the wrong boost... long story.

My easy to reach goal is 11 sec 1/4
(2 years)

my dream is 10 sec 1/4

we'll see what happens. give me two years of the kind of education I'm getting, and I may be transporting this engine into my home built GT car.... but, I'm rambling on again and dreaming. it's time for bed, I have Physics at 8am tomorow.

PS my education is at the Vehicle Research Institution at WWU.

 

I am pretty sure that DSM injectors are top feed while ours are galley feed.

 

that turbo it alittle oversized but shouldwork fine even if you dont get peak boost till 4500rpms

those injectors will definitly not work without custom fuel rails. like stated above they are top feed

 

well I can see some advantages such a setup. It seems that it your turbo does not spool up till 4500, then during everyday driving your car should be under no more stress than a N/A vehicle.

 

I talked to some guys and I am thinking about doing it. They said they have done plenty of top feed convertions on SE-R's and KA's. The use the same injectors as us and 300zx's. I am going to have to talk to them more but they said it is doable.

 

JDM intercooler?

Is that a brand name?

 

Sounds interesting. If it were reasonable it would really open up our options for injectors.

 

I said JDM b'c i got it on ebay, and i don't know a brand name, except that the shop i got it from imports stuff like front clips from japan. they said this intercooler was a common upgrade for a skyline.

I'm going to look into what we might be abble to do with fuel rails. what about a pre 95 300zx fuel rail, aren't they top feed? if so that should be an easy conversion.

 

this is what I was thinking, but if the need should arise, the professors here at Western have a few tricks up their sleeves to get a turbo to spool about 500 rpm sooner. maybe even more if I really need it. I would have to start another thread to talk about it.