needing help to find some Mercedes 75 280S engine parts

[Nacho-RT74]

Yes what you read. Locally they are being imposible to find.

needing piston rings at 86.5 bore and an AFFORDABLE engine gasket kit...

Car VIN is W116020XXXXXXX... engine is M110 carburated

I could need MORE parts, but this are mandatory now.

So if you get european car engine parts shops or Mercedes dealers or parts shops around you and its easy for you, will be great

[Homerr]

86mm standard bore, 86.5mm = 0.020" over.  Not sure about shipping these items below.

Rock Auto has one set of "HASTINGS MANUFACTURING 2C4303020 .020 oversize Chrome Piston Rings" for $64.
rockauto.com or http://www.rockauto.co.uk/

Clarks Discount Auto parts, $120
http://www.clarksdiscount.com/products/1973-MERCEDES+BENZ-280+SERIES-GAS+ENGINE-Piston+Rings.htm

[Nacho-RT74]

I saw those but I'm not really sure about those with oversize in imperial size... Beside that, Rockauto states 2 L6 engines ( 2.7 and 2.8 liters engines )  one of them with Goetze rings wich is a tipical brand for Mercedes.

My engine is M110 ( 280 with DOHC, not the old one )... 280 stands for 2800 cc or 2.8 liters, But the actual displacement is 2746 cc

https://en.wikipedia.org/wiki/Mercedes-Benz_M110_engine

What engine is actually the 2.7 one which is listed on rockauto on the same 280 selection?

[Nacho-RT74]

if you click on the rest of 280 Models ( 280SE, 280SL, 280SLC, 280C etc ) on some of them JUST lists 2.7 engine on rockauto with European flag. The 2.8 is listed with USA, European and Canadian Flag, so buying the Hasting ones I'm not really sure which one si the one I'm buying.

I'm not really sure about there was two 280 engines...unless one of them is Diesel ?. But 280SL which is a roadster gets just 2.7 as option.... The Roadster being diesel ? I never have known the R107 ( 280SL ) with diesel engine!!! all R107s I have known are the same engine than mine, but fuel inyected, elect fuel pump and electronic ignition. Mine is carburated, points and mech pump.

You know what I mean?

[Nacho-RT74]

making another search really found a diff hasting PN for them and engine series meets mine ( M110.922 )

[Nacho-RT74]

more specs of my car ( assemblied in Venezuela, Barcelona )

https://en.wikipedia.org/wiki/Mercedes-Benz_W116

[Homerr]

I had Google to the math, 0.5mm = 0.019685", I rounded to 0.020".

I just went to rockauto.com (the US site), Mercedes, 1975, 280S, 2.8L L6, Engine, Piston Ring.  Seemed pretty easy.  

Looks like the UK site has the 2.7/2.8 confusion but going to the 2.8l link there it looks the same as the US site.

I searched the part number from rockauto and got the Clarks link, the URL stated it's a gas engine.

You probably belong to or know about W116.org, looks like they are in the know about all this stuff.

[Nacho-RT74]

Ok I found that PN of the pic I posted is a vendor PN not manufacturer... here states manufacturer on same website

[Nacho-RT74]

I had Google to the math, 0.5mm = 0.019685", I rounded to 0.020".

Yes I'm agreed, but still dunno

I just went to rockauto.com (the US site), Mercedes, 1975, 280S, 2.8L L6, Engine, Piston Ring.  Seemed pretty easy.   

Looks like the UK site has the 2.7/2.8 confusion but going to the 2.8l link there it looks the same as the US site.

no, both get same "confusion"

So far so good I have added to my car by now those hastings... shame they don't have the full gasket set ( neither 2.7 list or 2.8 list )

You probably belong to or know about W116.org, looks like they are in the know about all this stuff.

yes I'm member over there, but never have got really help on there!!! just posted a couple of questions once and never got the responses I needed

[Nacho-RT74]

with all this confusion, I'm really tempted to reuse the rings still mounted on pistons

[Nacho-RT74]

to add more "help", check the Hasting website listing.

280S 73 and on... 86.5 bore... 280S ? really ? but 86.5mm bore ?

then up to 73 which is usually the single cam not overhead 280, dual 2bbls cab, and tipically used on W114 chassis ( tipically the basic 280 and the C which is coupe )... meets the hasting PN we are talking and 86mm bore

who says is confusing ?

[six-tee-nine]

If you really cant find them and absolutely need these, you could always let me know. There are alot of classic retailers for mercedes classic parts even the DB classic dealers over here in Europe.

since I speak and write German quite a bit I could do some searching around. I might even be abe to buy the parts for you and forward them. You must keep in mind that you'll pay a lot more for the shipping if you buy international....

BTW why other than an extreme high mileage would a M110 need new rings? these things last forever if threated and maintained well....

[Homerr]

How about putting some calipers on a piston since it sounds like they are out?

[Nacho-RT74]

BTW why other than an extreme high mileage would a M110 need new rings? these things last forever if threated and maintained well....

Yes, you are right!!!

Well I'm replacing the full engine. My actual one is 87 bore ( bigger bore available ) rebuilt around 10 years ago from 86.5 it was when we got the car at home. It has get SINCE EVER in our hands a weird water consumption. Maybe last owner got it too and thats the reason to get it sold. Last time I had to replace the head and gasket due an overheat found the cilinder 6 got some small holes or dents similar to rust marks/depresions ? dunno how call it in english. Here we call it CARIES ( like the teeth "caries" ). The truth is this cilinder got 90 PSI on compression test with the fresh head and gasket while the rest were on 140-150 rate. MOSTLY SURE they has being since ever and last mechanic who rebuilt the engine din't care about that and just wanted the money for the rebuilt job.

MY BET is these "caries" are caused due some minimal cracks of the cilinder 6 getting comunication with the block water channels, and this cracks are rusting out all around the edges. So there is where I get the water consumption, getting emptied the radiator without any advertise and overheating the engine untill damage the cilinder heads deck. ( 3 in 10 years ).

Then, I'm simply tired of deal with overheats and water consumption for years. Last overheat was around 5 months ago, and is keeping me refilling the radiator with around 2 liters by day ( I can't stop the car, need it to work ) . Of course Radiator got some leaks too... maybe due the compression going into the refrigeration system.

Yes, temp gauge woks, but this overheats usually happens fast and TIPICALLY on heavy transit situation ( which we have a lot in Caracas ).

Heads of these engines are very delicated with temp, specially between number 4 and 5 chambers. ( don't ask me how I know it!!! )

SO, I decided replace the engine with a refreshed/rebuilt one. This will save me to be without car for long time, and simply get the old engine out and get the new one in in couple of days once the new one is ready. Found a full engine in standard bore ( 86 mm ) needing next size bore and FORTUNATELLY when I bored my engine to 87, also SAVED the 86.5 pistons ( still got their rings installed BTW ). Decoding the block I found is from a W114, which is not a problem because is also carburated, so it got the fuel pump provision. Its same spects than the M110 to W116s

I have the option to reuse the rings still installed on pistons too, just that replace should be the best and correct procedure, but dunno what do you think. Dunno how to check for good conditions rings enough to be reused.

six-tee-nine that would be great... dunno if affordable but is at least an option!

need to note I'm just able to pay with paypal, but who knows maybe we can imagine how to proceed with payment.

[Nacho-RT74]

BTW I contacted rockauto ppl to get me clarified this. It seems the hasting ones should be the correct ones, but want to be sure. Shame their gaskets set prices are not same cheap than these rings. It can be found in $70-90 rate on ebay, and they got it in $128