Welcome to the North American Subaru Impreza Owners Club Thursday December 12, 2019
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-23-2019, 04:03 AM   #1
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default FP XR ZERO 86HTZ + FP inlet: how does it fit right???

FP XR ZERO 86HTZ + FP Inlet: how does this fit right w/o mod???

I have spent too much time on this already so I'm going to copy a message I sent to FP and prime motoring:

Hello,

I'm writing you from CO Springs. I bought an FP Zero. Tried to install it with a decently experienced subaru local, he is also a mechanic. We tried to install this turbo in my 05 STi. It has iag tgv deletes and iag phenolic spacers btw.

First off the inlet seems like its going to be a super tight fit (stock manifold), we didnt get that far but read about others with fitment issues.

Anyways, we had the same fitment issues as some guy on nasioc: https://forums.nasioc.com/forums/sho....php?t=2897628

When we tried to bolt the turbo to the current up pipe (grimmspeed, no headers, no ewg) to test fit, it wouldnt attach to the up pipe without first having the lower bottom corner of the hotside of the turbo hit against the transmission. right on a bolt (dont want to shave that, dont want to shave anything).

It only needs to raise like a 1/4in to clear it. I want to know if you guys fit this with no modificaiton. My tuner, who I wont name but is VERY good and reputable, but too busy to detail it, said 'he has never encountered this turbo hitting the trans'. He's awesome dont get me wrong. im just trying to figure this out. VERY HARD TO FIND INFO ON.

FP wont tell me anything useful. According to FP's website, and my tuner, this should fit with the parts I have and no modification, fabrication, or extra parts.

Is that correct? Did you all have to use a spacer/adadpter at the uppipe to raise it? did you have to shave the engine or trans.

I have humble goals and a tight budget left to install this. I have the grimmspeed up pipe w/ 44mm ewg, tial 44m mvr ewg, fp inlet (84mm), and fp zero. thats ALL i was told I need. Car already has the other mods I need for my power goal (on a budget). I have all the parts, just need to get it installed properly and correct.

How did you get it to fit lol. Am I missing something? IF so what?

If I bolt up the new up pipe, turbo (somehow) and inlet, and downpipe does it somehow rest in a place that doesnt hit the trans or anything it shouldnt be touching (it shouldnt touch anything really)? Does it somehow move when fully installed? What am I missing?

I will include my mod list. The goal is 500ftlbs, dynojet, at 6000ft elevation (safely max out the stage 2 iag).

Thank you so much for your input!

Nate Silver
513-417-2859
[email protected]

P.S. Why did you stop running the turbo? (I hope it wasn't an issue with the turbo).


MOD LIST:


2005 SUBARU IMPREZA WRX STI MODIFICATION LIST


Bought circa 11/01/2015
Already had:
cobb downpipe
cobb catback
cobb v3 AP
Cabin air filter 117k
Ac compressor 117k
UPs pump and fluid 117k
Oil change 118,000


118,500k fuel filter, fuel pump, cobb 3 port ebc, protune.
New battery 6/6/16 120k
Oil change 121000 miles
Headlight restoration 121k
New hid bulb 121k 9/1/16
123k new bf goodrich tires
123k airbox hose and turbo inlet
Up pipe Grimm speed
Up pipe , downpipe and header gaskets
Wiper blades 04 11 15


129k
steering rack bushings motul gear oil in the transmission and rear diff greased shifter bushings installed new shift knob
All new Shifter bushings
New shifter linkage
New transmission mount
Whiteline steering rack bushings
Whiteline anti lift kit
New ac condenser
Monroe strut tops
Feal fixed perch struts
Timing belt check:
Timing belt has been changed, aftermarket
Timing marks, heads were off, 50k on it.
Probably done at 80k.


132k
Flex fuel, bcp x500+, supporting mods


133k
Iag stage 2 short block
Timing belt kit
Complete engine seals
Cx racing radiator
Mishimitoto thermostat
Resurface cylinder heads
Front bumper brace
Whiteline 22m front and rear adj. sway bars
Kartboy end links
Boost gauge led replacement
Denso front oxygen sensor
Cobb XLE bpv
Cobb 4 bar map sensor


134k
Southbend stage 2 daily clutch kit
495 ft lbs., resurfaced oem flywheel
Michelin pilot sport a/s. +3 2454017
BBS gold wheels, mint
Alignment, wheel balance
Oil change
Trans top off


135k
Walbro 450lph hardwired
(Bypass fuel filter bag, there's another filter)
Aem series x wideband and boost gauge
Johnson tuning wideband AP logging kit


Protune: 507whp @ 6723rpm, 443lbft @ 5561rpm @ 28psi (Fresno, CA: 500ft)
* Registered users of the site do not see these ads.

Last edited by cincysubie; 10-23-2019 at 04:03 AM. Reason: wording
cincysubie is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-24-2019, 04:00 PM   #2
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

Are you having all the uppipe, manifold, etc bolts loose while test fitting to allow some movement?
Iím sure itís a tight fit no matter what and some grinding being needed wouldnít surprise me but Iíd try with everything being loose first so you can position it as needed.
Paul is offline   Reply With Quote
Old 10-25-2019, 12:24 PM   #3
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

Quote:
Originally Posted by Paul View Post
Are you having all the uppipe, manifold, etc bolts loose while test fitting to allow some movement?
Iím sure itís a tight fit no matter what and some grinding being needed wouldnít surprise me but Iíd try with everything being loose first so you can position it as needed.
it could just be the 83mm inlet... i bought a fp71 and sold it cause of that stupid thing..
subaru_gc8 is offline   Reply With Quote
Old 10-26-2019, 05:28 AM   #4
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

inlet is another story. there are too main problems. inlet fitment and turbo fitment.

for anyone else running the fp zerp or even the fp black I have now talked to the FP lead tech, many local shops, and searched online.

Here is the deal:

inlet: according to FP lead tech (it will fit with light compression from the manifold). This wont restrict flow until 650whp. tgv deletes are required. phenolic spacer helps. I have iag tgv deletes and 3mm phenolic spacers. it could fit but will be compressed. I would opt for 15mm or 19mm phenolic spacers from grimmspeed or torque solutions (grimmspeed preferred) but I have a grimspeed TMIC and that thing is huge. hood barely closes as is. If you have an FMIC get the 19mm spacers! then it will fit nicely. as high as I can go and close the hoods is 8mm iag. doesnt sound like much but with a big inlte and big turbo trust me every mm counts.

turbo: there are 2 options here (some people dont need to do anything and get lucky however). 1. take a dremel or something to the bellhousing of the trans and shave off a 1/4 to an 1/8th of an inch. in just a small section where the hotside would otherwise touch. This is the solution done by most shops. its fast, easy, and its at a part where the trans is like 1 in thick, and according to FP its structurally ok to do it there.

2. you can instead use an up pipe spacer/adapter (1/4in) and MLS gasket both sides. this is second choice for pro shops and FP because it creates a potential failture or leak point. if you do it right though. it could be fine. apt or something makes one. make sure its cnc machined or sand it flat and take a level to it and be sure. or take it to a local machine shop and have them make it perfect.

I opted to take it to a pro shop. This is not a turbo one should install themselves unless they are a subaru guru/builder, or they have an extra car with months of time to sort it out.

some people are having issues running all the lines. this is where a pro shop helps too. they dont seem to have much of an issue with it.

FP: please don't mislead future buyers into thinking this is a true bolt on stock location turbo. the ONLY way you can say that is if you put in bold font a warning (modification required), and then share notes on how to make it fit.

Give us some basic instructions or at least tips and pointers. I know pro shops do most of them and there is a reason why I am learning. but for other who are total DIY, this is potentially a BIG job.

FTR: the craftsmanship and build quality (i got it ported and coated) is top notch. fitment is the issue. it doesnt fit without modification. even blacks have this problem.

black flows at 71lbs , this is 78. its chra, xona rotor, and true ball bearing.

Im going stock location. IF I had more money I would go rotated or go with a precision turbo and go FMIC. I just dont have the money and I like being the underdog. I want to get the most out of stock location and this is it.

Bear in mind I am not trying to get any records. just safely max out the iag stage 2 block. goal is 500ftlbs dynojet @ 6000ft elevation.

keep you posted
cincysubie is offline   Reply With Quote
Old 10-26-2019, 05:31 AM   #5
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

Quote:
Originally Posted by Paul View Post
Are you having all the uppipe, manifold, etc bolts loose while test fitting to allow some movement?
Iím sure itís a tight fit no matter what and some grinding being needed wouldnít surprise me but Iíd try with everything being loose first so you can position it as needed.
no we kept the up pipe in place. but I think this would help a little. I think this is where it at least moves a little. still touches in my car, so we think. but were talking a 1/8-1/4 inch (not fully attached). It was touching where there was a bolt so I didnt want to shave it myself. I suppose when a pro shop does this proper it will sit in a position where you are safe to shave a little. good advice though. hook everything up very loose and go little by little each part im thinking. lol
cincysubie is offline   Reply With Quote
Old 10-26-2019, 05:41 AM   #6
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

Quote:
Originally Posted by Paul View Post
Are you having all the uppipe, manifold, etc bolts loose while test fitting to allow some movement?
Iím sure itís a tight fit no matter what and some grinding being needed wouldnít surprise me but Iíd try with everything being loose first so you can position it as needed.
no we kept the up pipe in place. but I think this would help a little. I think this is where it at least moves a little. still touches in my car, so we think. but were talking a 1/8-1/4 inch (not fully attached). It was touching where there was a bolt so I didnt want to shave it myself. I suppose when a pro shop does this proper it will sit in a position where you are safe to shave a little. good advice though. hook everything up very loose and go little by little each part im thinking. lol
cincysubie is offline   Reply With Quote
Old 10-26-2019, 03:28 PM   #7
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

maybe you have to treat it like the spoolinator, you have to shave down the trans bell housing to get it to fit.. big turbos in the stock location stink lol
subaru_gc8 is offline   Reply With Quote
Old 10-27-2019, 02:14 AM   #8
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

Like I said the quality and craftmanship of the turbo is top notch. Xona Rotor ball bearing is the real deal. stock location (bolt on) big turbos dont suck. FITTING big "bolt-on" , "stock location" turbos in the stock location SUCKS lol.

It is kinda of cool to keep costs down, spool up, and be able to say you put xxx numbers on a stock location or beat a supercar with a bolt on turbo. That's the upside, the sti underdog. gonna break some v8 hearts (unless they are forced induction), or full bolt on post 2006 vettes lol. generalizations I know but u get the idea.

The turbo can do 45psi, 78lbs/min, and 750whp on a stingy dyno.

FP Zero Set the stock frame turbo world record: 9.08 @ 154.6


imagine if it STUCK and went STRAIGHT. that thing was all over the place, lol.
cincysubie is offline   Reply With Quote
Old 10-27-2019, 02:16 AM   #9
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

but my goals are not to break record or motors. but max out the iag stage 2 shortblock. thats 500ftlbs, dynojet @ 6000ft. tuner said its not problem. he is awesome. I trust him. Idk what boost ill be running but im thinking 22-30. If it was sealevel I might not have even made the switch. It's just I lost almost 100hp (was at 507 @ 500ft) moving to colorado springs. If I ever move done back to earth my tuner is going to have to detune it a little bit or I would have 650+whp and blow it up lol.
cincysubie is offline   Reply With Quote
Old 10-27-2019, 02:22 AM   #10
cincysubie
Scooby Specialist
 
Member#: 191389
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2005 Impreza WRX STi
Obsidian Black Pearl

Default

Quote:
Originally Posted by subaru_gc8 View Post
maybe you have to treat it like the spoolinator, you have to shave down the trans bell housing to get it to fit.. big turbos in the stock location stink lol
most pro shops end up shaving a 1/8-1/4 inch off a small section of the bell housing of the trans to get the hotside to fit. Its safe though. Some use a dremel just a bit.

other option is the up pipe spacer, but again, potential leak and failure point and I hate leaks.

I might install the 8mm phenloic iag spacer (in lieu of my 3mm iag phenolic spacer). I wil leave it up to the shop to decide. We will see how compressed the FP inlet is. I would like them to use it if its smashed lol. "light compression" is okay.

Some shops shave, some shops dont end up needing too, and some shop dont know lol. but its not 100% given. I wont be the least bit surprised if they do though. (better not hyperinflate the price on me though). I warned them this was a very real possibility. its a well respected shop. with lots of experience. its just the zero is new and not many people run it. most go rotated. if I had the money i might of. but i like being the underdog. and I didnt need to spend a fortune to hit my hp goals. only reason I need a turbo so big is because 6000ft changes your car. you lose a lot.
cincysubie is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 08:20 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.