W115 Power Increase

1968 - 1976: 220, 220D, 230, 230.4, 230.6, 240D, 250, 250C, 250CE, 280, 280E, 280CE, 300D
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Joined: Wed 15 Mar, 2017 11:07 am
Model you own: I own multiple different models

W115 Power Increase

Post by Driver » Sun 16 Apr, 2017 5:20 pm

We have just bought a W115 to build as an entrance rally car. We just drove from Sydney to the Gold Coast and although the car performed well and we average 30 mpg, I would like a little more power but not at the expense of reliability. Ideas so far include replacing the oil bath air cleaner with a more efficient type such as a K&N, electronic ignition, different carby. Any thoughts?

Also looking for a source for a mesh grill to protect the lights and radiator.

Posts: 5477
Joined: Thu 23 Jun, 2005 1:18 pm
Model you own: I own multiple different models
Location: Hawthorndene (Adelaide)

Re: W115 Power Increase

Post by CraigB » Mon 17 Apr, 2017 9:17 pm

Which engine? Oiil bath very efficient and doubt any noticeable power from kn. Ignition good even if just reliability. Carby can have issues. Exhaust can be replaced with more rrestriction over years. Factory normally got lots but old cars, horses do eescape. So make sure running as should and dyno figures can tell you that
Craig Baulderstone
280SL Ruby
300TE Otto
350SL Gloria
350SLC Lurch
450SEL Boris
500SEC's...including Syd
560SEL's Foufou and Zac

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