superloaf

I think the compression fittings are nice and less maintenance than a hose clamp. Many industrial assemblies use them. Of course, I suppose many industrial assemblies use hose clamps too.... But the compression fittings just seem more durable and more OEM.

I still feel the best and most durable line to use would be PTFE with SS braiding and then covered with fireproof sheathing. Of course, that's not what i'm using. But next time....

Also, one idea that I used and think is beneficial is the routing of the lines to the back of the engine and then along the fuel rail, thus avoiding the direct heat over the exhaust manifold.

Hey Droops, how's that GTV6? I have a Milano and an Alfetta sedan. Love those cars! And soooo easy to work on compared to the 951! Well, most of the time....

V2Rocket

Weirdly, lots (most?) cars that come with a fuel damper do NOT have a vacuum reference on them.

Anyone know if dampers are pressure-specific?
Could you use a damper originally designed for say 65 psi with a 45psi regulator?

superloaf

Got a used damper and installed it so now the car is up and running with the damper. I got curious about the inner workings of the damper so I disassembled my dead one. Pics can be seen here:

https://rennlist.com/forums/924-931-...l#post15262014

Droops83

The vacuum line connected to the pulsation damper in some Bosch Motronic applications is simply to allow a safe path for raw fuel in case of a ruptured diaphragm (into the intake manifold); there is no change in its operation with negative or positive manifold pressure.

While it is possible that there are different spring rates and diaphragm surface areas to account for different rated fuel pressures, I suspect that the primary difference between most contemporary Bosch applications is the location/configuration and type of fuel inlet and outlet fittings.

V2Rocket

well that's very good to know, thank you.
that opens the door to experimentation...

V2Rocket

bump, this might work, off of 70s/80s Mercedes. they are still available.
these MB had 2-2.5 bar fuel pressure so should be OK for a stock-FPR 944/T
does not appear to have a vac connection though.

http://ecatalog.smpcorp.com/STD/#/ve...m/FPD50?type=s

Dave951

Is that a Bosch 0 280 161 007?

Tom M'Guinn

I have a '79 450SL so can check to see how close it is. It's at the upholstery shop for a while though, so will be a while. Looks like the primary difference is that it lacks the mounting bracket of the 951 unit. The Mercedes is a CIS car too, so seems odd that it would have the same style damper (but the appearance and similar Bosch numbers say otherwise)
.

Michael Mclennan

The Damper PART NUMBER 0280161007 90USD looks identical apart from the tab,,,

Can anbody confirm?????????

https://www.ebay.com/itm/Mercedes-W1...5:pf:0&vxp=mtr

Struggling with same issue everything is 400USD cheapest I can find on the net is from the UK for around $250USD. CRAZY for a part that 6 months ago was $80 !!!!!!!!!!

Raindrop

Hello,
So I saw a Mercedes Fuel Damper on Pelican Parts which has fittings similar to one on 944, however this model does not have bracket mounts

https://www.pelicanparts.com/More_In...80-161-007-INT

Has anyone tried these Mercedes Fuel Dampers on 944?