March 17, 2025, 01:35:33 AM

Author Topic: Alex's '94 FD TT Build -  (Read 23655 times)

Offline Venom13132

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Re: Alex's '94 FD TT Build -
« Reply #105 on: May 03, 2023, 11:37:11 AM »
I love the relay box you made over the battery.  I have my front harness laid out taunting me right now.  I need to move basically all of the relay and fuse boxes out of the engine bay and put them where the passenger air bag was.  I am just not looking forward to doing all the wiring work.
1995 RX-7 Voodoo Blue- LS3, TR6060: Full Feed wide body, 57DR 18's, K-Sport coil-overs, 99 spec\ tails and Carbon Fiber spoiler, SpeedHut Gauges, Aeromotive fuel system, TwinZ Diffuser, Texas Speed LS3 Stage 2 v2 Cam Kit, Comp Cam's Rockers, McLeod Racing 6405507M RXT Street Twin Clutch kit, ATI-1918628 - Super Damper/balancer, Lot's of other stuff.
2010 Cadillac Escalade: Daily Driver and pulls my 18' car hauler

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #106 on: May 03, 2023, 12:12:16 PM »
oil less turbos sound crazy, but definitely simplifies things, are you doing all the fabrication?

I am using the air cooled!  No water or oil.  Amazing and love it!  Sick build here!

https://youtu.be/N_1euqQCVc4

Cool — ya I think I saw your YouTube video previously! Definitely worth it. Literally popped in and didn’t know what else to do! Ready for boost
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #107 on: May 03, 2023, 12:13:33 PM »
oil less turbos sound crazy, but definitely simplifies things, are you doing all the fabrication?

No I’m not a fabricator - I have plumbing experience so I was able to get things pre-cut and prepped for welding
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #108 on: May 11, 2023, 08:19:19 AM »
The journey continues------

  I think one major draw back with the ronin setup that may or may not be talked about is the motor mounts! they sag almost instantly.. and no way am I leaving them at 11LBS (recommended specs). I played around with the idea of making a few Poly mounts for guys but its expensive and I dont want to be critiqued on quality control.  :lurk: ... You guys can make (2) sets for $75 unless you have stuff laying around...the process could be simplified but with running my business -- not setup for fabrication in the garage---im not interested. 80 hardness poly resin with carbon steel center, Stainless steel "casing" from a food press kit. Have yet to bolt and test but I don't see why it wont work.



  Finally received my front matching set of S77 Welds.....and boy am I frustrated with these guys. My rear 15s had scratches and cutting oil still on the inner barrel (not sure how this passes quality control) Either way, I sent my wheels of to powder coat and I got a call saying they're out of round. I talked to the sales guy directly-- after expressing my concerns and Over $3000 spent on wheels-- he is blaming shipping! Without getting into detail--- I'm hoping to escalate .. for my time wasted. Here is a video and pics.. Hoping to hear back on if this is "acceptable" run-out  :scratch:




VIDEO

https://swansonshomepreservation.com/wp-content/uploads/2023/05/wheel.mov

For shits and grins I threw a 4" spal paddel fan on my Oil cooler-- hoping it helps with a little bit of oil temps--runs at 3 amps (no relay) and 143 CFM---Probably wont do anything but hey it was in the garage  :yay:.. the car has not gone over 202 Degrees with the new dual 14" deltapag fans --86 degree ambient temp... so far im very satisfied!




#garagebuild I was able to cut, tape and drive 45 minute to have my intake pipes welded and got them home to find out my measurements and transfer worked how I originally laid it out but maaaaaan the driver side hangs just below the swap bar....i'm probably around only a .5" lower than stock height currently (New tires and wheels will increase height 7/16").. it will clear but it still makes me nervous. I'm actively looking at revising this and/or getting it on the ground and sending it... The turbos and throttle response is soooooooooo good.

 


but! it could be better...I have ZERO experience with HPtuners/SD but I have came to the conclusion (based on research) my tune is either in an open loop to closed loop configuration during cruise OR I have a bad Bank 1 O2 Sensor. With my 20$ Scan stool with Live date and My Wideband as a reference--I'm having an intermittent issue were--the wideband will bottom out to 8 AFR (normally when the engine is hotter) and at any time during that period (while the wideband is bottomed out) If i go into boost --approx 25%-40% of the time the car will foul out---RPM with dive to 750RPM and shutter with zero throttle response. I can pull over and restart the car and everything is back to normal. If i’m cruising and the wideband is swinging around doing it thing — no issues at boost—I have a new GM O2 sensor arriving today--well see what happens.

P.S. injectors were bench cleaned (Amazon cleaner) and flowed within 1-2% of each other at whatever random PSI the small pump runs at) I’d had to blame brand new ID1050x injectors but I’ll probably look there next if this doesn’t solve.




sorry for the crazy reply---off to work!
« Last Edit: May 11, 2023, 08:42:16 AM by driftnfb »
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline kinger

Re: Alex's '94 FD TT Build -
« Reply #109 on: May 11, 2023, 09:25:19 AM »
I would send it on that intake tube, if you are like most of us with low cars you are careful around inclines and bumps.  If you see a dead animal that you can straddle just move over a little so you can drive over it closer to passenger side. 

You have HP tuners but don't have the software or tune it yourself?  You really need to get the software and look at the tune if you don't.  Then we can help you.  Took me 3-4 years of fiddling but I have mine running near OEM now, its very rewarding.  Things like your rpm dip and die is common tuning issues that tuners can't afford to spend time on so you have to log, look, change, ...repeat. 

Sweet car so jelly of the power of FI on swapped rx7's. 

Also cool find on that fan, I need such a fan for an unrelated project where I need some thermal management.  I will look for that Spal model # thanks!
93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #110 on: May 12, 2023, 08:59:50 AM »
You're Right!--- I have deeply considered doing even the HPtuners "academy" which I believe was $1200 @ the time because right now my limitations are Welding and Tuning--- hey! buy my old turbos and Wheels and Ill be a seasoned vet in no time  :)

Love FI! as of a few months ago i believed i was the only twin turbo FD in the Midwest--- My cousin (ironic) has a buddy who just bought an LS1 TT from down south and shipped it back to Minnesota so I know I am no longer....

The fan sounds literally like a blow dryer --- im mainly using it for idle/stop and go for a little extra air movement---somehow ive made the stock hood work with all this and before I buy anything else I hope to help thermal runaway at any cost!

1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #111 on: June 21, 2023, 07:07:36 PM »
Finally!  :cheers: :drive:

As of today this car is running the best it has ever ran and functioning mechanically.

My last Dyno Run was sub-par and the car had issues; I was set on getting this thing dialed in and re-tuned..

On-going the car always had a longer than normal crank with backfire--I had discovered the car had a Cam Sensor DTC- Because I re-wired the car, I though it was something I did wrong-- Had cut and opened up the harness 3 times, tested everything. I looked at the LS2 GTO Wiring diagram-- found multiple errors--confirmed with other owners, cross referenced with other forum members--wiring was correct.  >:( This was extremely time consuming and information is very conflicting --GM Service manual and Sister Sites. (the pinouts on the cam plug are even wrong)  :banghead:

The front main seal was leaking from crankcase pressure so I decided to open the front case and check for cam walk as well....well i'd be damn! the sprocket is for a 58x! I was surprised the car even made the power it did on the dyno-- (thanks matt!) I swapped for a 24X Sprocket and even got the GM Part #cam sensor for the GTO (Yes they are difference but can be interchanged)--- bolted back up and it fired right up...no more DTC... Idle, low throttle, etc was sooooo much smoother  :wave:

With a little more confidence my next plan was to kabash this dang oil seepage-- Grannys/youtube has some decent info on running the secondary air pump ---for a few bucks and some left over 12AN line i Decided why not.. I have the typical non-recirc catch can setup that goes into a single tank with open element filter-- this then discharges into 12AN that runs about 9' back to the secondary air pump which is activated with a 2PSI Hobbs switch.





Headed to the tuner and wanted to get the timing down and turn up the boost 5 PSI (15PSI Total)--- he cleaned up the tune and added some more fuel up top and the car absolutely flyyyyys :drive: :yay: Tire pressure was about 15PSI and it hooks very well on the street SS and stays straight. we did about 8 healthy pulls--- got the car home --- not a single drop of oil/seepage from the front main seal--FIXED.

Next ill be working on the body side of things...carbon Fiber accents, and the A/C lines, etc. Got my 3rd set of Weld Wheels back ($300 credit back after some fuss) and they're in for Powder---ill update pics with the S77s on the ground
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline Gunnytron

Re: Alex's '94 FD TT Build -
« Reply #112 on: June 22, 2023, 02:13:44 AM »
Nice. It sounds like it's finally all come together for you.
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 8.8, 31 spline, trac-loc 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline freeskier7791

Re: Alex's '94 FD TT Build -
« Reply #113 on: June 22, 2023, 08:15:46 AM »
awesome!  You should put some radials on it.
https://www.youtube.com/thedriftingdad
1985 Mazda RX7 GSL Drift Car

CCVT

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #114 on: July 25, 2024, 02:01:27 PM »
Update !

Ended up throwing 4 rod bearings in boost. the stock motor had enough and it was always running hot. The setup needed tons of revisions, pipes were hanging way to low, the whole thing was a pain in the ass



Got the motor out.. sent it off to Texas to a recommended shop. The block was damaged and needed to be decked- the motor appeared to be rebuilt before by "jasper" i was told- it was already .20 over...at this point i was already down 14 weeks - we went .30 over with some BTR pistons.. the last time this motor will be rebuilt most likely











« Last Edit: July 25, 2024, 02:30:36 PM by driftnfb »
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #115 on: July 25, 2024, 02:05:37 PM »
With all the downtime I picked up a TIG welder, 330cf Tank and practiced welding for my first time on aluminum. (dont judge  :smile2: )

Figured Id cut the front rail finally and free up some room. move the radiator forward, shroud the fans, cut the IC core out and flip it upside down and put it through the core support. I had used the Old motor for mockup previously before sending it out









« Last Edit: July 25, 2024, 02:33:25 PM by driftnfb »
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #116 on: July 25, 2024, 02:10:00 PM »
Things were tight and things had been changed- trying to work withing millimeters to maximize the space. I decided I was going to do whatever it was to make it work. Next year im going to fabricate my own manifolds and push the turbos back 1/2"

after some previous experience I now know how much these cars need air forced through the front. I started making shrouding and heat shields









I found a 12 x 12 condenser core and mounted that. figured it was going to be undersized but was hopeful it would do something






« Last Edit: July 25, 2024, 02:19:44 PM by driftnfb »
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #117 on: July 25, 2024, 02:14:34 PM »
While I was busy cutting, welding and cutting and welding again .. trying to dial in my unit... i was updated with some lovely photos of the build over a span of 18 weeks (mostly time sitting on the wait list)














[imghttps://swansonshomepreservation.com/wp-content/uploads/2024/07/new6.jpg]http://[/img]





1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #118 on: July 25, 2024, 02:18:29 PM »
Cleaned up the engine bay










Got the New steering wheel in with an authentic mazdaspeed horn ($200) overpaid



https://swansonshomepreservation.com/wp-content/uploads/2024/07/new58.jpg

I didnt know they had a Flow through style flex fuel sensor so I changed that and relocated it outside of the hatch






1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8

Offline driftnfb

Re: Alex's '94 FD TT Build -
« Reply #119 on: July 25, 2024, 02:29:42 PM »
Car is back on the ground.

The build is a LS2 ALuminum 6.0
K1 Crank
.30 BTR Pistons
Johnson Lifters (3310s)?
TFS220 Heads
BTR TT Stage 2 Cam








Car is alot of fun now. Had some issues after learning the tuner didnt put in all the correct injector data so I learned how to dial the car in myself on HPTuners. Right now im at 11.3PSI with 100% duty cycle on 1050x's (maxed) with an AFR in the 11.3-11.5 Range @ 16 degrees timing. Ill probably turn it down a little more (this is as of today). The A/C is mediocre at best. Once I get the new manifolds in next year Ill probably get a bigger core or something (im always changing stuff up)

Goals for this next off season:

Haltech,
New Manifolds/Turbo layout
A/C Core Re-config.
Maybe Widebody like FEED or Ronin Rears, 99 spec wing and front bumper. Need to vent the hood with a siebon but might mess around with something custom.
1994 Mazda RX-7
LS2, T56, Twin Turbo Comp 6061 Air-cooled Madness, Ronin 8.8