Mercedes-Benz Forum banner

1 - 19 of 19 Posts

·
Registered
'12 E550 Sport, '01 550 Maranello *RIP*, '97 M3 6-Speed, '95 Dinan M3 Vert, '16 F350 Dually
Joined
·
775 Posts
Discussion Starter #1
I am curious what benefit if any would putting 89 560 heads on my 86 500 Euro. I have to put ne valve covers on and I may put these other heads on and do the timing chain while i'm in there. Thanks in advance. X
 

·
Registered
Depends on the day!
Joined
·
13,337 Posts
essentially, by adding the 560 heads you'll be doing what AMG did. The 560 heads have 2mm larger valves and larger ports to feet them. It's a great mod:)

All you'll need are some cams to take advantage of your 500's new found breathing ability!!

Jonathan
 

·
Registered
1983 500 SEC Lorinser 1971 280se w108
Joined
·
1,963 Posts
Will these work ok on pre 85 500? any machine work or will they bolt straight on?if so this seems like a great mod.....
 

·
Registered
Depends on the day!
Joined
·
13,337 Posts
Sure, 81-85 are all the same.

yes, they'll bolt right on.

Jonathan
 

·
Registered
1983 500 SEC Lorinser 1971 280se w108
Joined
·
1,963 Posts
cool as for cam can you get away with shaving the backs of the lobes on these to get a bit more agro or is there not enough adjustment ?
 

·
Registered
Depends on the day!
Joined
·
13,337 Posts
Very little adjustment available.. Mechanical lifters are really necc. if you want to get Serious with the cam..a-la what AMG was doing.

Jonathan
 

·
Registered
1983-2007 MB's
Joined
·
8,008 Posts
Swapping is great, you only need to understand the intricacies of doing helicoiling on the block to get a job done right.
 

·
Registered
'12 E550 Sport, '01 550 Maranello *RIP*, '97 M3 6-Speed, '95 Dinan M3 Vert, '16 F350 Dually
Joined
·
775 Posts
Discussion Starter #8
So just the heads would make some improvement. And the 500 cams wouldn't fit for the 560 heads, no?
 

·
Registered
Depends on the day!
Joined
·
13,337 Posts
Correct...you need 560 cams with 560 heads.

Jonathan
 

·
Registered
83 500SEC, 84 300TD, 86 190E 5.0 M113, 87 300D, 01 CLK55, 02 C32, 02 C320T, 03 C320T4, 03 E55
Joined
·
2,600 Posts
ahh that answers my question then, swapping 560 cams to 500 heads...

any speculation on what the estimated gain would be?
 

·
Registered
'12 E550 Sport, '01 550 Maranello *RIP*, '97 M3 6-Speed, '95 Dinan M3 Vert, '16 F350 Dually
Joined
·
775 Posts
Discussion Starter #11
That was my next question.
 

·
CH4S Admin , Outstanding Contributor
1985 500SEC, 1991 190E 2.6.
Joined
·
39,361 Posts
I am curious what benefit if any would putting 89 560 heads on my 86 500 Euro. I have to put ne valve covers on and I may put these other heads on and do the timing chain while i'm in there. Thanks in advance. X
Try a search on this, or have a look at my long suffering 'good news for me' thread.
Beside putting the complete (w. cams) 560 heads on the 500 engine, I had been trying to find out whether there is enough deck height to drop the 560 crank with rods and pistons (same diameter as 500 pistons) into the 500 block? I couldn't get a definite answer, and installed the complete 560 engine instead.
For the W126, members here have mentioned Japan tuners using heads from later MB (W129 or W140?).
Cheers
 

·
CH4S Admin , Outstanding Contributor
1985 500SEC, 1991 190E 2.6.
Joined
·
39,361 Posts
What needs to be helicoiled?
I imagine the threads for the head bolts, to avoid that one of the bolts cannot be tightened to spec at re assembly.

Welcome, Did you try a forum search?
To take advantage of all the forum features, please re visit the 'Welcome to the Forum' tutorial sticky on top of the W126 page, as well as the two DIY stickies.
It will show how to search the forum, and even has a link to the Russian MB site where you can run a VIN#. The forum archive has a wealth of information write up's re your topic.
Good luck
 

·
Registered
1983 Euro 500SEC AMG, 83 SEC custom convertible, 2x 84 500SEC, 02 w203coupe, euro 1985 300d
Joined
·
1,579 Posts
aluminum heads, with aluminum block, with steel bolts that have been out for 20 years = time to heilacoil the block----you will break a bolt or two doing this eventually and have to drill it out-- ask any gear head here
 

·
Registered
'12 E550 Sport, '01 550 Maranello *RIP*, '97 M3 6-Speed, '95 Dinan M3 Vert, '16 F350 Dually
Joined
·
775 Posts
Discussion Starter #16
So is that something that might have to be done or will have to be done?
 

·
Registered
83 500SEC, 84 300TD, 86 190E 5.0 M113, 87 300D, 01 CLK55, 02 C32, 02 C320T, 03 C320T4, 03 E55
Joined
·
2,600 Posts
It's risky. Sometimes it happens, sometimes you get lucky.
 

·
Registered
Depends on the day!
Joined
·
13,337 Posts
Quite..the later 560's (early 89 if I'm not mistaken) began using phosphate coated bolts in which case unless the engine has been overheated you are Typically OK. If there is Any possibility that one of these engines was run Hot it pays to helicoil.

It's not a Horrible job, the big thing is the jig so you can get the holes @ the correct angle.

Jonathan
 

·
Registered
'12 E550 Sport, '01 550 Maranello *RIP*, '97 M3 6-Speed, '95 Dinan M3 Vert, '16 F350 Dually
Joined
·
775 Posts
Discussion Starter #19
Well it was running fine before I removed some critical parts. It is definately a seasoned motor with 389,000 miles it will enjoy a nice refreshing. The heads I mean.
 
1 - 19 of 19 Posts
Top