sorry its taken so long

by jaygtfour, 02-06-2020, 12:06 PM

hi some of u might no who i am from the show but for those tht dont im jason and thought i best say hello at long last.

Usefull for supercharger users.

by ZAIS200, 01-06-2020, 07:43 PM

Hi all i found this on the net while searching for more specs relating to which superchargers are best to use for which application, i'm not sure if you guys will find this useful but i did... Any way here goes, they are calculations that allow you to calculate whether or you choice of charger is correct for your choice of engine.


depends really, the more boost you run, the hotter everything runs and the shorter the life of the charger. If you find the equation for working out pulley sizes in that thread i linked you to.

FIRST CALCULATION (Engine Litres/min @ 0 Psi )
Multiply engine capacity (in litres) times maximum engine Rpm. E.g. 2 litres x 6000 rpm = 12,000 litres/minute. Divide this figure by two as engine only fills every second stroke. (12,000/2 = 6,000 litres/min.
This is the engines air requirements in litres/minute at 0 Psi boost.

SECOND CALCULATION (boost ratio)
Add the boost pressure desired (10 Psi) for the engine to 14.7 Psi (atmospheric pressure).
(10 psi boost desired +14.7 =24.7 psi)
Divide this answer by 14.7 and this gives the boost pressure ratio. (24.7/14.7=1.68) This is the boost pressure ratio above atmospheric pressure.

THIRD CALCULATION (Actual air requirements @ desired boost)

Multiply the boost ratio by the litres/minute obtained for 0 Psi and you get the actual air requirements in Litres/min for the engine at that boost. In our example this is 6000 litres/min X 1.68 = 10,080 litres/min for 10Psi boost.

To decide on the correct size of supercharger you need to know :-
1. The swept volume per revolution of the supercharger. (Eaton M62 1 litre/rev, SC14 from a 1G-GZE 1.5 litres/rev, SC12- 1.2 L/rev)
2. The maximum continuous safe operating speed for the supercharger. (Eaton M62 14000 rpm continuous, Toyota SC14 12000 rpm??)
3. The maximum pressure that can be safely produced by the supercharger continuously. (Eaton M62 12 psi, SC14 10-12Psi??? teflon on rotors melts??)

CALCULATION (Supercharger rotor speed)
Divide the desired air flow (5313.6 L/min) by the swept volume of the supercharger (SC12 from the 4A-GZE is 1.2 litres per revolution). This will tell you the maximum speed the supercharger rotors must be run at to produce the volume required.
10,080/1.2 litres = 8,400 rpm for the SC12.

So, to make your wanted 10psi happen, you need to spin the SC12 up to 8,400rpm while the Engine is doing 6,000rpm.

8,400 is well under 12,000 so youll be safe running that boost.
Its up to you how much boost you wanna run, but remember, the more boost you run, the more heat is created and the harder the charger has to work. SO, the harder you boost it, the shorter the chargers life will be due to heat and wear.

How would you feel if this happened to your Accord?

by Saraj, 01-06-2020, 03:08 PM

https://www.facebook.com/photo.php?v=133562726784338

Not sure if you can watch this video without liking, but let me know.

Happened couple days ago to my brothers Honda Accord !

Ouch.....

maxolen competition

by leedscal, 31-05-2020, 07:26 PM

hi everyone

maxolen are currently running a show and shine comp and a very good mate of mine andy dufton is in the running with the airbrushed evo
could everyone with facebook just like the pic as his car was entered a day after some of them so he was 80 likes behind to begin with!!!!
the car deffinatly deserves to win

heres the link

https://www.facebook.com/photo.php?fbid=...=1&theater

cheers guys and gals

Messing with the new camera

by dalegt4, 31-05-2020, 07:17 PM

a few from trip to work this morning with my new slr, just getting to grips with the manual settings and focus at the moment.

r33 drift car :)

by leedscal, 30-05-2020, 03:41 PM

hi everyone, sorry not been on here for a while alot has happened lol
sold my gt4 on and got this beast.
this is a pic of her when i got it



its a 1995 skyline r33 gtst, mainly it will be used for drift but i take it out a few times.

a few more of when i got her home



horrible stance!!!







so first job was to give her a clean up





then i started to strip it out



bought a japspeed type 2 cat back system
japspeed downpipe
japspeed decat pipe
the car sounds awesome!!

bought this beast to run me about in lol

Hi all - newbie here

by Retta, 30-05-2020, 06:06 AM

Hello there

Thought I'd better introduce myself, just joined the site.
Myself and my partner have just bought a 6th gen Celica ST 1.8

Cheers Retta

Hello, newbie here my names dan

by 350zdan, 29-05-2020, 08:53 PM

Hello, newbie here my names dan a very good friend of mine said i should pop over and have a look around the forum thanks kevin

i am a proud jap car owner, I have silver 1993 Toyota aristo with 63.400 miles it has got 20" wheels 20x 10.5j rears and 20x 9.5j fronts sits nice and low with jic magic coil overs all round with full custom exhaust system to help that 2jz engine sound even better has all the bells and whistles and then some and keep the car safe i have a snap off steering wheel alarm and immobiliser and having a tracker fitted very soon ......i also have a 1997 lexus gs300 sport project car that i am currently working on has ****** front bumper side skirts and rear bumper swaped out the grey leather for beige cream interior
custom twin exhaust system tein coilovers and lots of other bits the list goes on and on and on as we all no they never stop will up load some photos shortly

the vintage thread

by el_bandido, 29-05-2020, 05:03 PM

After trekking round Goodwood with John, I thought it was time we gave a bit of love to some vintage J-tin, I'll get kicked off with something I've been dying to own for years:

Hi all

by ZAIS200, 29-05-2020, 04:37 PM

Hi all, I originate from Sunny South Africa, but now live and work in Dublin, Ireland, I recently baught my first Irish car, a great old bird, a 2000 lexus IS200, she has a fair bit of millage on her and looks to have been loved as she is in reasonable condition for her age she is kitted out in the "sport" package and is the very sexy black colour, my future plans consist of a supercharger kit making use of the oem parts bin, i've managed to source myself a professionally reconditioned Toyota SC12 supercharger with custom pully, I plan to refurbish the oem rims only changing the colour to a "gun-metal" grey or a close to black without actually being black,many way, i'm looking at finishing off the cosmetic facelifts with a full SQ sound install possibly using products from the Hertz stable, will still look into that, any way that a little about me, i hope to learn as much as possible from you all and hopefully add to the knowledge bin from my almost 10 years being involved in the speed and sound industry, i look forward to chatting to you all... Cheers