S38B42 Up and Running Stroker
After much R&D and a few hurdles the 4.2 stroker build is up and running .
She just has to be mapped and a few little extras and she's good to go .
It's been along time coming , but on the few short drives that I've had so far she feels like a highly spirited E34 M5 .
More details to follow , basic spec ;
12:1 CR Pistons
H beam rods (147.5mm iirc )
Raceware Head Stud Kit
Mls head gasket
Bespoke Exhaust Manifolds
Bespoke Stainless Decat exhaust with x pipe
4.5kg Chromoly Billet Flywheel
Uprated Sachs Clutch
Larger alloy rad .
6 speed brakes .
Great to hear some news on this project David
Have you calculated the dynamic compression ratio and what fuel will you be using ?
Depending on cam timing the DCR will be high with 12:1 CR and a longer stroke
Any ping problems ?
This should be conservatively a 390 to 400hp motor by my calcs with more available with software changes, 315 to 320 RWHP
It Will be good to get some knowledgable comments on this stroker conversion from someone dong it and not theory
Mid range torque should be awesome
David,,,, is this the OZ ppf stroker kit ??
Hi guys .
Yes , this is the Aussie PPF Kit after a number of discoveries and alterations to get it up and running .
In the uk there are only a few petrol stations that sell >97 ron fuel .
Ideally we want to run on the highest octane available and at present it's got 99 ron fuel in the tank .
My man is currently looking at the fuelling and will be mapping her after a run on the rollers.
For now , I am simply overjoyed to have her up and running and getting her through a uk ministry of transport test , including emissions test .
See video of initial running ;
E34 M5 S38B42 Stroker:
Stock , Shrick or custom cams ?
Some calculations on water / methanol injection
Great stuff David - you must have lots of pics - get them up here !
Amazing project David. Keep us posted.
This is not a plug and play stroker kit ?
"Much R+D and a few hurdles" doesn't sound like it was an easy bolt in
What I want to know is this crank , rod and piston related or other engine components
|All times are GMT +2. The time now is 12:33 AM.|
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Everything Copyright 2000-2008. Do not use ANYTHING from this site without written permission. All images, graphics, sound files, video files and text appearing on this web site are the exclusive property of m5board.com and are protected under international copyright laws. All images, graphics, sound files, video files and text on this site are for on-screen and on-site viewing and listening only. No part of this web site may be reproduced, copied, saved, stored, manipulated, or used in any form for personal or commercial purposes without the prior written permission of m5board.com. Use of any image or graphic as the basis for another photographic concept or illustration is a violation of the copyright. Any copyright infringement will be prosecuted to the full extent of federal and international copyright laws. M5board.com is an enthusiast board and we don't condone any dangerous activity. Our airfield events are completely safe based on years of experience, we conduct them during clear visibility with mature participants that have several years of experience with high-performance automobiles, large unobstructed run-off zones on sealed off private former military airbases and we clearly mark the braking zones. If inexperienced with high speed driving we do not recommend organizing your own event but attending a high-performance driving school. The use of the term "BMW" on this site is for reference only, and does not imply any connection between m5board.com and BMW AG or BMW North America.