Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Mercedes-Benz Performance Paddock

LinkBack Thread Tools Display Modes
Old 02-15-2015, 07:19 PM
Registered User
Join Date: Jan 2012
Posts: 7,162
M104 ( and similar ) adding cam timing adjuster to exhaust?

The next time I bored and have free time. . . . I need to look into adding a intake cam adjuster to the exhaust side. Physically it looks like it just needs a different front cover made or a modified one from a distributor type M104 24 V .

Someone has to have thought about / done this in the past.
Reply With Quote
Old 02-17-2015, 09:31 PM
Registered User
Join Date: Aug 2009
Location: Indianapolis, IN
Posts: 524
I mean, in theory it would work fine. I haven't checked the oil galley on the exhaust side, I'd want to make sure it's big enough to supply that adjuster (I have no idea if it's different from the intake side).

The only thing I'm concerned about is that from all that I've read on VVT at least with phasing only vvt, is that the intake cam is what alters the lion's share of the power curve while altering the phasing on the exhaust cam is largely for emissions by eliminating overlap, etc. So I guess the question is whether the amount of work is worth the effort?

I'm not one to discourage anything, so I'm all for it, and will help out however possible, but something to consider.
1993 190E 2.6 Sportline
Reply With Quote
Old 02-17-2015, 10:07 PM
whipplem104's Avatar
Registered User
Join Date: Oct 2008
Location: seattle
Posts: 1,166
I think the biggest problem is, and I would have to double check, is the exhaust cam does not have an opening for the oil to charge the advance mechanism. So you would have to have an intake reground to do this properly. And then you would have to figure out the proper switch point through countless hours of tuning on a dyno.
Reply With Quote
Old 02-17-2015, 11:06 PM
Registered User
Join Date: Jan 2012
Posts: 7,162
Thanks all, it has been a while since I worked the science of cam duration selection.

I'd think the exhaust cam could be drilled for an oil supply.

Less overlap could be good for a supercharged motor, maybe more at low speed for a turbo motor to get it spooled up.

Someone in Denmark , Sweden , Holland was using an exhaust cam on the intake side in order to get more lift, not sure if they kept the intake adjuster or not.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 12:06 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page