vorstellung 450sl from California 1979 with TSZ-4

Hi,

well the 061 seems to be a WUR for MB 380 SE/SL USA version egnine. So not for 450 SL.

Hi Volker,
Thank you for this precision, it makes sense as the 450 last month of sale for the US was March 1980, before the release of the 380. It is common at least in the US to have an older model with newer model parts. It is a challenge for these overlapping years when trying to find what should fit.
From the documents in the trunk you or one of this board members can probably have more insight.
Best,
Michel
 

Hi Michel,

as I collect datacards of all R/C 107 and W116 I was happy to see this stripe. There are just 2 things that I would need to have it complete

• Engine no. 118985120xxxxx
• Gearbox no. 722004 02 xxxxxx
• and maybe date of production / first registration

BTW you have a model year 79 .

here we go for your collection

Engine 117985 12 033539
trans 722004 02 108258

 

Best

Progress made: I secured the pressure test gauge to prevent the hoses from touching hot engine surfaces... and did the usual drive until the engine started to act up, usually 3 to 5 miles. Pop the hood installed the gauge on the fender, secured it with a large magnet and a padding from an old inner tube.
As soon as the engine reaches 2000 to 2200 rpm, the control pressure drops from 3.5 bar to 3.2, engine misses, pressure drops further to 3 bar... let go of the throttle, pressure comes back to 3.5 with full power as long as the rpm is below a certain rpm.

Time to check the fuel pump when it is warm. I did an amp test last year, but it was on a cold engine.

Hi Michel,

you should also check incoming filter for fuel distributor and whether it delivers enough fuel to WUR and fuel flow rate returned to tank.