[W126 Coupe] Engine replacement for 1983 500 SEC
Attila Makranczy
attila1378 at yahoo.com
Wed Aug 13 22:23:44 EDT 2008
Axel, you can install a very simple unit to have the electric fans
come on at whatever temperature you dial in. Mine came from
an A/C set-up. Spal now has something way better. It costs
around $100 and reduces the fan RPM as the engine cools. Mine
is a '94 E500 and I removed all of the plastic crap on top of the
engine to help the cooling process. Mine also runs after the car
is turned off. I'm ordering the Spal soon. As you know, this car
runs hot. The engine compartment over-heats. It was desinged to
accomodate a six, not an eight.
--- On Tue, 8/12/08, Axel Wulff <axelwulff at hotmail.com> wrote:
From: Axel Wulff <axelwulff at hotmail.com>
Subject: Re: [W126 Coupe] Engine replacement for 1983 500 SEC
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Date: Tuesday, August 12, 2008, 11:46 PM
#yiv937606143 .hmmessage P
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The cooling issues with my M119 engine are finally resolved.
It only took three years, three radiators, four different fan combinations, coolant system flushes, etc., but who's counting.
The final element was the custom aluminium shroud with dual 12" Spal fans from Ron Davis Radiators. Even with the aux fan out of commission, the engine temperature stayed reasonable (with an M119, 100 C is normal and anything less than 110 C is fine).
The most annoying thing when the cooling system was not doing its job was to have to turn the AC off and the defrost on at max heat in 90 F weather to avoid overheating.
Regards,
Axel J. Wulff
610-731-5453 Cellular
610-572-4611 Home
From: mramay at att.biz
To: mbcoupes at mbcoupes.com
Date: Tue, 12 Aug 2008 08:56:14 -0700
Subject: Re: [W126 Coupe] Engine replacement for 1983 500 SEC
Andy,
The steering has been beating up on me for a long while now but I just might get it resolved this week. The LS6 block just touched the MB steering gearbox and I used that as the logic to go to a R&P. Probably should have left the MB stuff in there but I'm too stubborn.
There are a couple of M119 SECs running around and they turned out great. The good news is that the SEC is still all MB and has around 325 HP. The bad news is that at least one of them (Axel's) still is running a bit too hot and I understand that it's pretty tough to get over 325 HP.
I have a custom wiring harness for the LS6 that is *supposed* to be plug-n-play. That will hook up all the engine sensors to the ECM, then around seven wires need to be hooked into the SEC. Simple (sure, he says tongue in cheek!!).
Later,
Mike
----- Original Message -----
From: Andrew Sporner
To: Mercedes Coupes Mailing Lists
Sent: Tuesday, August 12, 2008 8:46 AM
Subject: Re: [W126 Coupe] Engine replacement for 1983 500 SEC
Hi Mike,
Don't get the wrong idea. I am agnostic about this
kind of thing. I know what I would do, but it doesn't
mean that that is what somebody else should do.
In any case I looked up the motor and it looked
very intriquing. I saw somebody made an upgrade
to M119 and wondered with a non-MB motor how
much more complicated it would be.
I had a similar idea myself, but have decided instead
to sell my '82 anyways. There are too many new
problems cropping up.
Cheers
Andy
On Tue, Aug 12, 2008 at 4:29 PM, Mike R. <mramay at att.biz> wrote:
Andy,
There was nothing wrong with the M117 motor or the 722.3 tranny that I removed to start this project.
This is being done because:
1. I want to.
2. I'm tired of everything (!) MB in the engine compartment leaking something
3. This is by far the easiest way to get LOTS of HP
4. This is the easiest way to upgrade from an engine/tranny designed in the '70s
5. This will, while doubling the HP available, increase the fuel mileage of the car.
6. This will provide a cruise control that doesn't die/surge (FYI, $85 for the CC unit).
7. No more concern about the MB Classic Center tripling the price of parts for the expensive lumps in the car.
8. Once this is done, if the LS6 doesn't provide sufficient power, then the LS7 (427ci) is the exact same size, a bolt-in replacement.
9. I get to enter MB car shows AND Corvette car shows
10. It pisses off the purists to put a better engine and tranny in there than MB provided (remember, this is lighter, double the HP, and gets better fuel mileage)
11. It likely costs half of any MB upgrade
12. I get rack & pinion power steering
Later,
Blasphemous Mike
----- Original Message -----
From: Andrew Sporner
To: Mercedes Coupes Mailing Lists
Sent: Tuesday, August 12, 2008 7:07 AM
Subject: Re: [W126 Coupe] Engine replacement for 1983 500 SEC
General question.
Is this something people are doing because they can -- or is it a case that
Mercedes parts are impossible to get a hold of to make the original motor
work?
Greetings
Andy
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