RX7Club.com - Mazda RX7 Forum - My BW S475 project... lots of pics.

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RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)

- Single Turbo RX-7's (https://www.rx7club.com/single-turbo-rx-7s-23/)

- - My BW S475 project... lots of pics. (https://www.rx7club.com/single-turbo-rx-7s-23/my-bw-s475-project-lots-pics-804713/)

gusfd3s

12-05-08 02:55 PM

My BW S475 project... lots of pics.

So.. i finally sold my greddy t78 kit and went for a borg warner s475 with 1.10 A/R.

Car summer 2008
http://www1.garaget.org/archive/92/9...893-916922.jpg
[youtube]http://www.youtube.com/v/uslGUyz3a5A&hl=sv&fs=1[/youtube]

2007/2008 winter build up with new fuel system, weldon 2035 pump and 6x1680cc injectors
http://www.molnsatra.se/bil/f3.JPG
http://www.molnsatra.se/bil/fuelrail/2.jpg

2007/2008 i also installed the t78 turbo kit and made a new manifold.
http://www.molnsatra.se/bil/tryckror/6.JPG

The car was dynoed a couple of times in 2008 and at 21psi it made 548RWHP on E85 tuned by myself.

As usual that was fun for a few weeks and now winter has arrived and my fingers itches like hell!

Two weeks ago i received some material to work with, i've been welding some aluminum but never done anything useful with stainless..

First off, i did this to be able to make....
http://www.molnsatra.se/bil/turbo/1.jpg

this fixture of the new manifold.
http://www.molnsatra.se/bil/turbo/2.jpg

gusfd3s

12-05-08 02:56 PM

gusfd3s

12-05-08 02:57 PM

finally...
http://www.molnsatra.se/bil/turbo/11.jpg
http://www.molnsatra.se/bil/turbo/12.jpg
http://www.molnsatra.se/bil/turbo/13.jpg

THe new turbo on the new manifold, the fixture did its job, it is tight but it fits :)
http://www.molnsatra.se/bil/turbo/14.jpg
http://www.molnsatra.se/bil/turbo/15.jpg
http://www.molnsatra.se/bil/turbo/16.jpg

now the wastegates, 2 synapse 40mm wastegates.
http://www.molnsatra.se/bil/turbo/17.jpg

First wastegate there..
http://www.molnsatra.se/bil/turbo/18.jpg

Space was a big issue here, it was hard to make room for both of them, i probably got the manifold on and off the car 30 times before i got it right.

gusfd3s

12-05-08 02:57 PM

gusfd3s

12-05-08 02:58 PM

gusfd3s

12-05-08 02:59 PM

gusfd3s

12-05-08 02:59 PM

turboR1

12-05-08 03:19 PM

looks very nice and great work.. im on a simliar path.. dam that turbo is going to be a tight fit. do the wastgates stick out from under the car at all?

gusfd3s

12-05-08 03:30 PM

Quote:

Originally Posted by turboR1 (Post 8775742)

looks very nice and great work.. im on a simliar path.. dam that turbo is going to be a tight fit. do the wastgates stick out from under the car at all?

Sweet! :)

They are about an inch under the subframe

enzo250

12-05-08 04:08 PM

Very Nice...

Now i know why you need upgraded axles.. LOL...

Chaotic_FC

12-05-08 04:11 PM

wow this is a very nice build
what are your power goals?
also, what kind of porting do you have?

Lasse wankel

12-05-08 04:18 PM

Nice job and fast as usual Gustav "thumbs up"! So you kept it 3" the last way? Must try to locate a good air filter for you or as we speaked about a cold air boxed system maybe is the way to go? Now to a question to all you BW 475 lovers, what kind of hp at 20 psi boost and at what rpm is Gustav gonna make? This would be on a RotoTest hub dyno. Myself i think 600 rwhp@7700 rpm@20psi!??

/Lasse

Azcamel

12-05-08 04:26 PM

nice work, i wish i had skills like that.

turboR1

12-05-08 04:27 PM

600 is alittle high for only 20 psi esp since this turbo doesnt start moving until 20+psi.. prob 525 is a better number at 20psi. you have to run big boost with this turbo to make power.

ZAN_TUNING

12-05-08 05:10 PM

Veryyyy nice! the welding looks great, lets hope it holds the weight of that beast :)

mono4lamar

12-05-08 05:17 PM

The intercooler piping from the compressor outlet has too many bends IMO. I would have opted to a larger single wastegate and put it as close to the turbine inlet as possible... You're on the right track, we all just do it differently. Beautiful port matching on the Excessive LIM (I bet you hated how bad they come cast too...) Also, Excellent work on the manifold! :)

Japan2LA

12-05-08 05:20 PM

I like you LIFT..

KaiFD3S

12-05-08 05:34 PM

Great work, wish I knew how to weld...

enzo250

12-05-08 05:41 PM

Quote:

Originally Posted by Lasse wankel (Post 8775905)

what kind of hp at 20 psi boost and at what rpm is Gustav gonna make? This would be on a RotoTest hub dyno. Myself i think 600 rwhp@7700 rpm@20psi!??

/Lasse

I'm gonna guess 625hp @ 25~27psi.

mono4lamar

12-05-08 07:36 PM

Quote:

Originally Posted by Japan2LA (Post 8776050)

I like you LIFT..

I was going to say that too. :p:

Gorilla RE

12-05-08 07:38 PM

Quote:

Originally Posted by Japan2LA (Post 8776050)

I like you LIFT..

I thought the same thing....:lol: :scratch:

-J

Azcamel

12-06-08 02:22 AM

Quote:

Originally Posted by Lasse wankel (Post 8775905)

i would guess on 91-93 pump gas at 20 psi it woudl be in the low 500rwhp range, like 500-515. I put a little over 500 on 20psi on a GT42, either way both my and his turbo is still not waking up at that leve, it needs to be hin the high 20 to make monster boost.

dregg100

12-06-08 04:21 PM

Quote:

Originally Posted by turboR1 (Post 8775924)

600 is alittle high for only 20 psi esp since this turbo doesnt start moving until 20+psi.. prob 525 is a better number at 20psi. you have to run big boost with this turbo to make power.

gotham used this turbo on a similar setup right before going under and made 608 @20psi on a mustang dyno. so dynojet numbers is well into 600s.

i will be using this turbo too in a little while and cant wait!

gusfd3s

12-07-08 05:12 AM

Thanks for nice comments,

I dont want to speculate about power, time will tell, will put the car on the dyno when im finished.

With the greddy turbo the car put down 499whp @ 17psi pump gas, 506whp@15psi E85, 548whp@21psi E85.

The goal with the car is to run a 10 on 1/4 next summer :)

the LIFT is my best tool :lol:

justturbo2

12-07-08 10:55 AM

real nice. the welds look awsome

Gorilla RE

12-07-08 07:48 PM

Quote:

Originally Posted by gusfd3s (Post 8779183)

If that was your goal then why did you change your whole setup for no reason? You could have easily been in the mid to high 10's on your pump gas tune.......:scratch:

-J

ZAN_TUNING

12-07-08 09:22 PM

agreed! are you just wanting to run 10's while spinning down the entire track??? hahaha :D

K_1_M

12-07-08 10:24 PM

It´s funny, no fd has ever run a 10 here in sweden. Not even with a 899rwhp 20b in it, it was damn close tho a 11 blank. We have the hp but it hasn´t happened yet...
Hope to change that next season!

turboR1

12-07-08 11:03 PM

Quote:

Originally Posted by K_1_M (Post 8780870)

dam.

gusfd3s

12-08-08 05:00 AM

It's still december and a long time before the track opens here and if i know myself right my goals and expectations will change.. before you can run a 9 you need to run a 10 right? :scratch: :lol:

K_1_M

12-08-08 09:40 AM

^^
Word!

So back to us swedes not being able to run 10´s :D

Fastest fd is ABIEX 20b powered one with a 11.00
Fastest 13b fd ran 11,273...

Hope that Gus and me can make all that change! ;)

My build hasn´t even seen the track yet, nor have Gus´s. This season got pissed away by rain mostly! :(

borx7

12-08-08 09:57 AM

Nice work,but as usual there's always one stupid question.What is the tread size
of the an fitting going into the tial bov?

gusfd3s

12-08-08 10:44 AM

Quote:

Originally Posted by borx7 (Post 8781657)

Nice work,but as usual there's always one stupid question.What is the tread size
of the an fitting going into the tial bov?

Thanks,

There are no stupid questions, i use 1/8npt to an4 adapters for my bov.

gusfd3s

12-08-08 11:00 AM

Quote:

Originally Posted by Azcamel (Post 8775921)

nice work, i wish i had skills like that.

Thank you.

Skill is not something you have, it is something you get doing things like this, one year ago i was in your position, then i bought my first welder and here i am. It is all about time and dedication.

don't waste more time, go get one yourself!

it is never to late :)

borx7

12-08-08 12:59 PM

2 Attachment(s)

Thanks for your quick reply,but I've already tried that.There's some kind of hard
plastic on top of the tial bov and my 1/8npt to -4an fitting doesn't screws in all the
way and I'm afraid that that the plastic part will crack.

borx7

12-08-08 01:03 PM

BTW.I'm not hijacking your nice thread,but it came in as a real solution to me.
Keep up the good work.

Gorilla RE

12-08-08 05:37 PM

Quote:

Originally Posted by K_1_M (Post 8780870)

Maybe ya'll need to work on the suspension and driving part.... Horse power is the "easy" part.

And on that note, the OP would have an easier time running a 10.xx with 499rwhp then with his 6xx rwhp "monster" he is trying to build..... I can see it now 11.80 @ 137mph :rolleyes:

-J

borx7

12-09-08 05:42 AM

I knew it was a stupid question.I thought the top side on the tial bov was some kind of hard plastic,but the color had me fooled.To be sure I tried to take a bite
on the top side where the npt fitting screws in and gues what?It's metal.So my problem is solved thanks to YOU.
My kindest regards and I hope you can get in the 10's.

WilD BoB

Turbodriven

12-09-08 11:50 AM

Wow what a nice build! Dude your welding is nice!! Where do you get your Borg Warner units overseas??

Marcel Burkett

12-12-08 07:43 AM

Quote:

Originally Posted by borx7 (Post 8784293)

U may have ato run a tap in there to open it up , since the threads are streight and most 1/8"NPT threaded fittings are tapered . Nice build , would be interesting to see when that animal will spool , whats the exhaust a/r ?

13B-RX3

12-12-08 09:36 AM

The thread is not pipe thread. IIRC it's 10mm X 1.0 but it is a straight thread. It's the same thread size and pitch they use on their wastegates.

colum

12-12-08 09:54 AM

we are running 10's over here in street trim with 450rwhp and 9.0 with 5-600 rwhp

just goes to show a good susp setup can work wonders

regards

colum

Marcel Burkett

12-13-08 09:46 AM

How similar is the S475 to the GT45 ?

gusfd3s

12-15-08 09:05 AM

Quote:

Originally Posted by Turbodriven (Post 8784834)

Wow what a nice build! Dude your welding is nice!! Where do you get your Borg Warner units overseas??

Thanks! i got the turbo from the states :)

Quote:

Originally Posted by Marcel Burkett (Post 8796550)

How similar is the S475 to the GT45 ?

I have 1.10 a/r. comp 75/100mm turbine 83/74mm,

K_1_M

12-15-08 09:31 AM

Quote:

Originally Posted by internal comsucktion engi (Post 8782925)

Yepp, I´m going to copy Jigsaw´s suspension setup. I´m 80% into dragracing but I do wanna try the track as well. So that setup with Ground control coilovers with tokico illuminas will be perfect for me I think!

Sorry Gus for the Hijack!! :P

Turbodriven

12-16-08 11:04 AM

Quote:

Originally Posted by gusfd3s (Post 8800656)

Thanks! i got the turbo from the states :)

I have 1.10 a/r. comp 75/100mm turbine 83/74mm,

Very nice.... Turbo should make good power.

ChrisRX8PR

12-16-08 11:22 AM

Quote:

Originally Posted by gusfd3s (Post 8800656)

Thanks! i got the turbo from the states :)

I have 1.10 a/r. comp 75/100mm turbine 83/74mm,

Where did you get the really tight aluminum bends in 3" that you welded to the turbo compressor housing?

I need something like this but what I have found so far isn't even close.

Thanks in advance.

Chris

Ottoman

12-16-08 03:55 PM

your car looked really fast already in the Youtube link

the T-78 didn't look very laggy at all, what RPM does the turbo spool?

you just need to work on your launch that's it!

i'm really suprised no one got 10's

perhaps it has more to do with suspension setup and a good 60 ft' etc then it does just raw power?

gusfd3s

12-19-08 12:24 PM

Quote:

Originally Posted by Ottoman (Post 8804360)

I liked the t-78, spool was not that bad... my tire pressure was way to high in that vid. I had stock diff/axles last year so didn't want to push it.

Just bought a diff, and stronger axles are on the list ;)

gusfd3s

12-19-08 12:26 PM

downpipe finished.
http://www.molnsatra.se/bil/turbo/f1.jpg
http://www.molnsatra.se/bil/turbo/f2.jpg
http://www.molnsatra.se/bil/turbo/f3.jpg
http://www.molnsatra.se/bil/turbo/f4.jpg

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