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

Lasse wankel 05-28-10 04:34 PM

Today Gus and friend Danne was sorting out the wiring blues:nod:Some more work to do, but i've finished Gus motor with some grinding of the front cover:lol:Tomorrow hopefully motor is in the car:scratch:Shall be really interesting to hear the new "beast" come alive. Street testing with the Autronic auto tune and then heading for the RotoTest:egrin: Then we will see...

/Lasse

tegheim 06-20-10 04:52 AM

Nice color of the engine gustav :)

Lasse wankel 06-21-10 03:10 PM

Soon the new engine is to be started:scratch: Autronic SM4 and the 500R cdi ignition ha sooo many cables to be wiring in:) First Rototest hub dyno, then goes the engine out to be seriously mapped and dyno'ed on a SuperFlow 901 bench:icon_tup: Then if Gus makes some serious hp the engine will go back to the FD engine bay, and then hit the strip:egrin:

/Lasse

gusfd3s 06-27-10 01:31 PM

she now idles at 1000rpm and 14:7 AFR :)

tegheim 06-28-10 03:00 PM


Originally Posted by gusfd3s (Post 10080230)
she now idles at 1000rpm and 14:7 AFR :)

who cares about idle?! :)

(my idle at 900rpm like a little pussycat)

gusfd3s 07-07-10 02:17 PM

http://www.youtube.com/watch?v=2aDuL...layer_embedded

Erdin 07-07-10 03:19 PM

Gus, what fuelpums you using?

gusfd3s 07-08-10 12:08 AM


Originally Posted by Erdin (Post 10097656)
Gus, what fuelpums you using?

weldon 2035

Erdin 07-08-10 08:04 AM

nice:)

gusfd3s 08-15-10 12:15 PM

been doing some street driving now and everything seems to work, im very impressed with the autronic unit so far. the car runs flawlessly both on vacuum and on boost

im at about 21-22psi now.. i feel im ready for some 30psi tuning...:nod:

im also trying to setup the 2-step/launch control, i've been reading alot on the subject but all information is for piston engines... anyone that can guide me how to set it up properly on autronic for a rotary?

apexFD 08-15-10 03:24 PM

I request, as I am sure many do, VIDEO!!

Can you share some data on how that bw s475 spools on a large street ported engine? I am running the exact same turbo and plan to be on the dyno next week.

=Benjamin

gusfd3s 08-20-10 02:42 PM


Originally Posted by apexFD (Post 10165969)
I request, as I am sure many do, VIDEO!!

Can you share some data on how that bw s475 spools on a large street ported engine? I am running the exact same turbo and plan to be on the dyno next week.

=Benjamin

http://www.youtube.com/watch?v=GMioBEm0VEs

3'rd gear pull 24,5psi , not much drama there :dunno:

still on a pretty rich tune up... its crazy fast even though it doesn't show on the video :lol:

im seeing 25psi at 5000rpm.

GL on the dyno!

tegheim 08-20-10 04:38 PM

you're a pussy :) More rev! :D

gusfd3s 08-21-10 02:48 AM


Originally Posted by tegheim (Post 10174990)
you're a pussy :) More rev! :D

Its not me driving, havn't actually tried yet, im behind the computer :lol:

mycalifoniacrme510 08-21-10 03:50 PM

very clean work

gusfd3s 08-22-10 12:46 PM


Originally Posted by mycalifoniacrme510 (Post 10176289)
very clean work

thank you!

gusfd3s 08-22-10 12:58 PM

i've got some good news and some bad news.

I was at the track today and i set a PB at 10.8 with a crappy 1.7 60ft...

Had big problems with my burnouts and i all my 60ft sucked.. either it bogged or wheelspin. i guess i need more seat time :)

the bad news is i hurt the motor, one apex on the rear rotor is probably stuck.. i ran into the rev limiter very hard in 1st gear (9000) and when i got into second it was running on 1½ rotor..

sad part this was the only run i didn't keep my laptop connected so i don't have a log... (they wouldn't let me keep the laptop in the car)

i still havn't given up so ill take the motor apart probably in the next few days

will have some videos for you guys soon..

Erdin 08-22-10 01:43 PM

damn sorry to hear that gus!

tegheim 08-22-10 03:45 PM

can't belive how you have the energy to proceed... keep it up!

gusfd3s 08-23-10 02:48 AM

well i guess its a part of the game.. as long as i can learn something from it to prevent it next time..

I will get a vid from inside of the car and hopefully i can see the AFR's.. then maybe some of you guys can give me some hints of what happened..

gusfd3s 08-23-10 04:01 PM

the motor is out..

http://transport.molnsatra.se/bil/1.JPG

one apex is stuck, from what i can see through the exhaust port the housings looks OK.

what could have caused this?

tegheim 08-23-10 04:34 PM

glue? :P

rx72c 08-23-10 04:34 PM

the rotor has dimpled and grabbed the apex seal. it detonated.

hondahater 08-23-10 04:38 PM

sounds like good luck on your part as far as things that could have gone wrong but didn't. Next time get that thing tuned better before taking it to the track...

gusfd3s 08-24-10 03:04 PM

rear rotor bearing had spun 180dgr, no harm done to the excentric shaft(!) the rotor tip had made a very small touch to the housing but didn't leave a mark... i could just slide the apex out of the groove and there is nothing wrong with the seal.

housing and irons looks mint.


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