Author Topic: The S42 Race Engine !!!!  (Read 81891 times)


Boyracer

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The S42 Race Engine !!!!
« Reply #181 on: April 27, 2009, 02:50:59 AM »
Sexey! :cool:

Clearly they went for best possible flow after collector by using 2 x 63 mm (my exhaust is only 1 x 63 mm) piping and did not give need for backpressure much consideration :D

Might not be direct fit to E36 either because I think Supertouring cars had engine in different place and stock...

enildeR

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Possible Slide Throttle Source
« Reply #182 on: March 10, 2010, 12:54:59 PM »
Quote from: strypt;49514
The reason that the slide throttle are hard to modulate is because the intake runner area increases/decreases greatly at some positions. Friction shouldn't be much more than a conventional throttle if the slide throttle is designed properly with bearings but maintenance/greasing is much more important. I'll see if I can find a good photo of one design.

Edit: Found a page but only thumbnail photos, the bigger ones does not seem to work? One good pic on the frontpage though http://www.scheel.ch/ its under "Motorsportteile".

I know this is an old thread, but in case anyone stumbles on this with an itch for  slides...

I had a '90 Yamaha FZR1000 that had slide throttles. I can't remember what size the mikunis were, but considering they were designed to flow at 11.5k RPM, they should be sufficient. :D
They were carbs, but with a little JB weld and a dremel, probably wouldn't take much to make them suited for fuel injection.

They operated smoothly, and I really didn't notice any negatives at partial throttle. But if you're building a track car, it really doesn't matter.

wazzu70

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Re: The S42 Race Engine !!!!
« Reply #183 on: April 26, 2013, 12:55:03 AM »
About time this thread got a bump :) I noticed Conrad in NZ had some S42 parts for sale so I asked him to send me some more detailed pics. Still trying to find pictures of the pistons and crank, but this sheds some light on some parts I had not seen in detail previously.

(unfortunately) blurry picture of the solid lifters:


Valves:


Head Gasket:


Connecting Rods:




Slide Throttles:








Dry Sump Pump Bracket:




Dry Sump Pan:








Enjoy!
« Last Edit: April 26, 2013, 12:57:52 AM by wazzu70 »
-Nick
91 E30 M42 with VEMS

colin86325

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Re: The S42 Race Engine !!!!
« Reply #184 on: April 27, 2013, 09:27:07 PM »
Drooool!

timothymcn

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Re: The S42 Race Engine !!!!
« Reply #185 on: April 29, 2013, 10:41:27 PM »
Thanks for bumping an old thread. Very interesting read.

MLM

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Re: The S42 Race Engine !!!!
« Reply #186 on: April 30, 2013, 01:25:49 AM »
All this time of lusting over fabled S42 parts and someone (Conrad) is selling bits, litterally 30 minutes from home....

MLM

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Re: The S42 Race Engine !!!!
« Reply #187 on: March 16, 2014, 02:21:02 AM »
Found a couple of sites over the weekend. Though I would share for those who also crave s42 pics

http://www.richsport.hu/stw/

http://www.enginewhisperer.com/wp/?tag=engine




Darky

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Re: The S42 Race Engine !!!!
« Reply #188 on: March 16, 2014, 07:56:27 AM »
Amazing job!
Even if it didn't have a holy grail powering it!

MLM

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Re: The S42 Race Engine !!!!
« Reply #189 on: March 16, 2014, 11:07:52 PM »
Amazing job!
Even if it didn't have a holy grail powering it!

Hmm lists it as an S42..
The port pics were good, along with the other detail shots in the engine whisperer link. Interesting to see the engineering and expense in these cars