Fastbacks bus! WOW

[panel]

Have you guys seen these pics? I've seen some pics of this thing lifting a wheel in the corner

http://www.youtube.com/watch?feature=pl ... CIPo79DHlA

[turbobaja]

Why are we just now seeing this thing

Looks freakin' awesome!!!

[fastback]

oh..!
thx guy's .i see The Speedhunters guys have been at the Norwegian "Gatebil" festival last weekend

[Typ 11 Beetle]

Fastback ,
please show us more pic´s of your bus!!!

[brookester]

What kind of powerplant is that?

[fastback]

engine is a 2.4L Wasseboxer turbo megasquirted 571 RWHP

[fastback]

some pic's

https://fbcdn-sphotos-a.akamaihd.net/hp ... 2247_n.jpg

[fastback]

IMG_20120711_191356 (Medium).jpg

[Clonebug]

How much boost is it running????

That's a lot of hp from 2.4 liters....

[Wally]

Wow! 571 RWHP now?!!

That is indeed awesome!



(stupid max 800 pixels wide STF thing)

[shag55]

Vary nice Fasty!
Agreed. Hard to post any pics anymore with this size restraint.

[shag55]

What size turbo? How much boost? Is lag an issue on the track?
Thanks

[fastback]

The turbo is a Precision with a ~60'ish compressor wheel and a ~65'ish turbine.
boost is pretty stable on 1.2 bar(wastegate spring pressure) up to 6500 and from there it creeps up to 1.75 bar @ 7500 where i stopped on the dyno last time.
before i have had it up in 7650 on the dyno with climbing HP numbers and on the track 8200 RPM without any signs of the engine loosing power...
also with backpressure 0.7bar under boost pressure i have more horses waiting
I'ts not laggy, but my grandpa style gearchanges may give an impression of that but the few times i changes gear fast it's fast on boost again.

since i have spent 3 years collecting parts and saving money and building it , i will have some time on the track with these numbers to get some quality time with it in the end of the season my goal is to exceed 2.0bar and go 8000+ RPM AND start using the boost control to get boost form lower RPM's
I left the boost creep as it is , since it gives the engine the extra punch on the top end . it's like a porsche GT3 on crystalmeth!

[fastback]

a funny story during testing , i actually blew the wall out of the combined plenum and IC's... yes i had been a coward with the amp's on the welder and not calculated the forces on the weld. it actually is almost 1000kg force on the wall at 1.5 bar boost.!!
so i had to crank up the amp's and made a lot of reinforcements inside the plenum

IMG_20120617_183344 (Small).jpg

[fastback]

so i took some stock 1600 pushrods and made reinforcements .
it does not seem to influence airflow

IMG_20120619_204337 (Small).jpg