Tag Archives: HMW M52

V2 SC Belt Orientation Wrap Pulley Addon Upgrade for V1 Users

Main Editor April 17, 2016 Projectlogs Leave a Comment

For users of the V1 Design, a Minor Evolution of the Bracket System, This adds a secondary pulley and changes the belt orientation slightly, allow more tension to be put on as well as allow more belt grip and wrap around the SC and alternator pulleys, specially needed when using smaller pulleys to eliminate any belt slip, this should also increase the boost due to the factors above.

Belt Routing

V1 to V2 Wrap Pulley Addon Plate

Image on the right is full scale copy of the template itself, which can be printed out to borderless A4 Paper, mind the dimensions.

Continue Reading V2 SC Belt Orientation Wrap Pulley Addon Upgrade for V1 Users

Available Downloads

2016-04-30-934 (180 kB)
2016-04-29-920 (400 kB)
2016-04-21-897 (393 kB)
2016-04-21-895 (386 kB)

Expected Power Gain Formula

Main Editor October 16, 2015 HMW, SC14 Supercharger Comments are off

Boost Calculations for M52B28 Motor and SC14 Supercharger

Supercharger Boost Calculations - Image from DeviantArt Artist soulrebel83 (Tim) of Germany! — Supercharger Boost & Power Calculations

Here I will try to show the calculations and formulas used to get an rough estimation of expected boost from an Supercharger. The Formula can be applied to other setups and superchargers as well,

For this example We will be using the BMW 2800cc M52B28 engine as the basis the amount of boost expected from using the SC14 + 103mm Holden Pulley, To read more about pulley options for the SC14 please go read About the SC14 Supercharger Category.

And please skip to the bottom of the page if all the math below makes you dizzy, I originally modified and used this formula courtesy of the datsun1200 forums.

Note: This has served in conjunction with the FAQ section of the old site since 2015, now that we have our dedicated FAQ Section, its time to retire this as a simple post back on the blog. Last Updated – 4/29/2017

Continue Reading Expected Power Gain Formula

Available Downloads

math_formulas___ps_brush_set_by_soulrebel83-d15vjl7 (52 kB)

More About the SC14 Supercharger

Main Editor October 15, 2015 SC14 Supercharger Leave a Comment

Updated 7/10/2016 – Information Dump & Archival.

Below are Notes of this Supercharger I have gathered from http://mr2.com/TEXT/SuperChargerInfo.html

It was an article supposedly posted on their old site and summarizes what was known in the 1990s. Now in the 2010’s many of this information may or may not be relevant apart from the blower and its nitty gritty specifications, use this as archival purposes and for anyone looking for more information. 🙂

Continue Reading More About the SC14 Supercharger

Available Downloads

2016-05-08-978 (388 kB)
intrcool (25 kB)
sc1 (94 kB)
sc2 (84 kB)