Just won an auction on eBay for brand new 350z greddy turbo manifolds, 2 Japanese made new kigunawa turbos ($900 a piece) and an intercooler without piping for $1200 total. The parts are all new and never mounted. Retail price for the parts are roughly $3000. So basically this is the start thread to my custom Twin turbo build. Will post pictures when parts arrive next week. I am open to all suggestions as I have never done a custom turbo build before!

 

i thought Taiwan was outside of Japan....

 

I saw that auction - I considered it for the headers/turbos and sell the intercooler. I don't know enough about Kiguwana so it scared me off...interested to see how you piece it all together.

 

Yes I will be interested too lol

They are made in Japan. They are a very trusted brand mostly used overseas in japan with great success. They don't have as big of a foothold in the US

 

Never done a custom turbo build before. Have you done any turbo builds before? Do you know what all you will need to complete the install?

Good luck with the build.

 

The closest was helping my friend with one on his honda. Do Hondas even count?! Lol. I am big in the street car scene and already have a friend from a local import shop willing to fabricate the itercooler piping. It's a very nice shop. Every time I'm around the shop there are at least a few r35's . They know what they're doing and I trust them. I think I got a great deal on these parts and it's a great start none the less. I was not planning on twins but I saw the price and had to jump on it. Now that I have twins I will be looking into a shortblock. My motor has 100k+ miles so not much of an option there. I think it's gonna be a long term build but it is worth it and I will keep everything updated starting with pictures and opinion on these turbos when I get them next week.

 

I would suggest you see what other people, both who bought kits and have pieced things together have done. I think you got a good deal if everything works out - I'm not saying it wont, but if you have problems mounting the turbos to the headers and require a few hundred dollars in custom welding than youre that much worse off.

if you are going to build the block now would be the time but it isnt cheap. All in, I think my 'stage 3' block from IPP was $12k when it was all said and done (that includes fuel delivery, injectors, headers, ecu, shipping, etc...)

speaking of tuning - what do you intend to tune with?

I would add in a decent oil cooler

 

Stage 1 IPP shortblock $2800
Injectors $500-600
Fuel pump $100
Custom intercooler piping $400-800
Wastegate $200-400?
BOV $200?
Utec $700

 

Im scared to ask, but what kinds of power gains or what power numbers do you expect out of this build?

I dont think you're too far off, but here are a few things to consider...please take all of this as constructive criticism and if I come off as a dick I apologize now (wouldnt be the first time) but I am trying to add some foresight to help you as much as a puke can behind a macbook can...

Can I assume your intercooler fabricator will fab-up some intake duct-work for the pre-turbo intake/filter setup? Add $100 for filters and maybe $100 for intercooler couplers.

How are you feeding oil to the turbos and how are you scavenging? I can only assume you are going to run a line from the OEM oil pressure sensor port to the turbos and going to add a oil pan spacer for the return? $150 for the oil feed lines/fittings, $100 for for the return line and $100 for the oil pan spacer.

I dont remember my exact amount but you will need a few hundred dollars to ship the block to IPP and ship the block back. If I had to take a stab at it, from Colorado Texas was $300 for both ways...adjust accordingly and get a quote from Kyle.

Someone will chime in on an aftermarket fuel pump and bigger injectors on an OEM delivery system. It may be worth your time to research a return fuel system. You may be wasting your time/money with a larger pump and injectors if you DON'T go with a return fuel line/fuel pressure regulator, fuel rail, etc. If you go with just a larger fuel pump add $150 for labor to install/modify the fuel basket to take the bigger fuel pump.

You'll spend $300 to $500 per waste gate, double that for each turbo. I would not go 'cheap' on wastegates. Add a few hundred dollars for the custom welding to add flanges to your exhaust.

aforementioned oil cooler - $400.

You should look into a boost controller as well - relatively inexpensive but should be able to mesh into your tuning device. $50.

As far as tuning goes, use whatever tuning device your local tuner knows best. If it's UTEC stick with UTEC but also look into OSIRIS, I think Haltech would be overkill for your situation. Add a ~$500 for tuning and ask your tuner what he is going to charge you...add 20% to whatever he tells you.

also account for the 'trim' pieces that make up a turbo kit...if you want A-pillar gauges, a vacuum block, turbo blankets, exhaust wrap, etc.

In addition to searching & reading what others have done - google the greddy twin kit, the APS kit, the JWT kit (turbo kits in general), read their instructions and see how they've engineered their kits and take bits and piece from their R&D and apply them to your setup.

 

Add in a few grand more just for extras u don't think your gonna need..

 

You can get a utec for $300

 

or nearly buy my haltech for a bit more than you allotted for the UTEC

 

+1...you may want to go through Cux's FS items and see what you can purge off his tear-down...The haltech would be like using a NASA space computer to do your child's math homework but it'll do everything you'll ever need.

 

Been lots of discussion on IPP's blocks...... Might want to do some searching on that. Great customer service but.....most seem to bank (literally) on Dynosty or VTR.

The more people u get between building block, install, and tuner......more possibility of finger pointing when issues come up.

Good luck tho be nice to see something diff

 

This is true (I'm not trying to stir the pot) there have been some issues with IPP but the fact that Kyle stands behind each one of his blocks speaks volumes to me!

OP should do his due diligence when choosing a engine provider...

 

When it comes to buying a shortblock.. My stock de has 100k+ miles on it. I could potentially save a lot by doing rods and lower comp pistons.. Disassembling the motor and taking it in. Probably almost $2000 in savings. Also with the greddy manifolds being setup for a twin set up is there anyway I could make them run just one turbo and have an identical spare.. This would save lots of money in the long run.. Be more reliable and most likely easier to fit under the hood. When I was in the market for FI I was planning on a single kit at about 8psi I came across these and it was such a good deal I jumped on it. I wasn't planning on a potential 500whp twin turbo rig in the first place. I would be just as happy with anything over 380.

Also, I am still awaiting on the parts that were shipped from North Dakota. I will keep this thread very updated with every move. I contacted greddy asking to purchase just the intercooler piping for the twin kit even if they would sell it I'm sure they would **** me in the *** pricing it. Still awaiting a response from them

 

I would take 100k with routine maintenance and normal driving over 10k of abuse and neglect. It may be worth the $100 to take your car to a performance mechanic and have them do a leak down test and compression test and get their professional opinion about throwing some turbos on this block.

yes, anything is possible(we put a man on the moon)...but no, run twins at lower boost per blower...don't reinvent the 'greddy' wheel.


You need to never think 'save lots of money' ever again and start thinking 'what's going to preserve my engine the longest'...I hope this isnt the first time you've heard this...but...fast, cheap, reliable - pick 2...

I think the problems you'd encounter (reliability is arbitrary and fitment is a toss-up)...it's better to stay twin than go single...you need to mimic what greddy put together...It's my opinion that the headers are going to dictate your build. The money you saved upfront will be spent on the back end...don't make this harder than it needs to be.

Still plan on 8psi and +/-400whp...you don't have the extensive mods or setup to go beyond 450whp. It's gets very expensive very fast and when you piece together a turbo kit you are in 'no mans land'

It's my opinion that the auction you purchased isnt (nearly) as good as a deal as you think...just my 2 cents...I bought a complete greddy 18g kit, with intercooler and a handful of extras for $1500...albeit one blower was shot (both were rebuilt)...it's been a process...Its my goal to help you avoid as much heartache as I can.

I saw this auction and was going to offer the seller $500 simply to have a backup set of headers and another set of blowers, but they were not greddy blowers and I'd have field day mounting them.

good, because you wont get there without spending 10k to 15k on 'everything else'. Stay modest for the time being...Get your 400whp and see where you're at. There are many variables in this equation.

Tell your tuner that you want a safe 401whp and not a pony over

if they havent started laughing by now, then they will tomorrow morning. You will get no where with greddy under $2000. Start researching companies that sell high quality aluminum duct-work. Avoid ebay and expect to pay a small premium for better material...a little extra money now will pay divides down the road. Also, talk to your fabricator and see what they say for a supplier...if you buy cheap **** it'll very evident. Remember that your fabricator has to build this and supply ZERO warranty to his work. Buy the good stuff to make his job as easy as you can. Eliminate anything that 'can go wrong'. If he hits your cheap intercooler ducts with the welder and they melt, not only are you out the cost of the cheap **** you just bought but you have to buy the higher quality stuff...might as well buy higher quality from the gate.


AND LASTLY!!!! Go out (you can ebay this one) and get Maximum Boost by Corky Bell...read it in it's entirety (dare I say twice) before you get too deep in this build...understand each and every concept he presents because you are now living it! Let me be the first to welcome you to the world of FI...

 

I already love you so much help. I feel the no mans land already and I dont even have the parts yet.. The car has been treated nicely, not beat on and oil changed at 5k with Mobil 1 full synthetic. I think I might just run this set up on the stock block for a start off. Otherwise I will be building a motor for over a year haha I think it will be fine at 8 psi. I'm not gonna rev the **** out of it. I rarely do now. I believe you are right about keeping it twin. No point in over complicating it.. Otherwise it defeats the purpose of all the parts I bought. Greddy does sell a full twin turbo intercooler upgrade for their kit for $1800 that is why I contacted them asking if they could take the intercooler out of the situation. With the ecu tuning being the most expensive part. If I can find one used I can probably have a fully capable twin turbo set up for around $4000. But from what I figured out with working on cars. Nothing ever goes as planned. Just can't wait to finally have some pictures up

 

My god even that book is expensive! Lol. I am trusting you on this one and have it ordered

 

Actually they have the full PDF for the book online! Perfect