Hi Paul, Indeed, unlike most Mopar passenger cars, the ram inducted cars used two heat risers, on on each side. The passenger side unit is easy to find replacement parts for; however, the driver's side unit is a different story - but only as far as one specific part - the counterweight. If you need to rebuild the driver's side, as long as you have the counterweight, you'll be OK - everything else is interchangeable. The shaft, bushings and thermostatic springs are the same (the spring is just installed "backwards" on that side as compared to the passenger side) , and the rest of the hardware is also the same. The only difference, really, is the actual counterweight itself. No, you may not make things work in the opposite direction; won't work. The only real problem you will encounter is if your original left (driver's) side counterweight is missing. You'll either have to find one (from another Club member or ??? ) or make one. To the best of my knowledge, there are no Mopar cars, other than the ram cars, that used that specific, "reversed" counterweight. If I am wrong, someone please let me know - I could use a couple of those ! Of course, there are plenty of passenger (Right) side counterweights out there, in junkyards, etc.. since they were used on many, many cars of that period. You may check out a good picture showing both sides of the heat riser system on the ram cars : http://www.crossrams.com/van300f/0105exman6.JPG And there are pictures showing rebuild of same : http://www.crossrams.com/van300f/seven.html Hope this helps, John Hertog Sag Harbor NY ----- Original Message ----- From: "Paul Weihl" <pweihl@xxxxxxxxxxx> To: <Chrysler300@xxxxxxxxxxxxxxx> Sent: Friday, November 18, 2005 3:38 PM Subject: [Chrysler300] Heat Riser > Hello Group, > > I have a complete Heat Riser kit to rebuilt the right side exhaust > manifold (passenger side). Only problem is that the kit is for the left > side because the counterweight in the kit is the same as the left side and > it should be the mirror image for the right side. The parts catalog shows > the counterweights as left and right side with different part numbers. > Since I do not have the manifold off the engine to check all > possibilities, my question is, can the left counterweight be applied to > the right side by installing the valve plate to accommodate the different > balance of the counterweight? I know the best solution is to locate the > correct counterweight. I visited several salvage yards and found 5 > exhaust manifolds that used the same style heat riser, but everyone was > for the left side. Seems strange because I thought that most MOPARs had > the heat riser on the right side, thereby making it easy to find the one I > was needing. Any ideas will be greatly appreciated. Thanks. > > Paul Weihl > St. Louis, MO > 300G > > [Non-text portions of this message have been removed] > > > > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > For list server instructions, go to > http://www.chrysler300club.com/yahoolist/inst.htm > Yahoo! Groups Links > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/