NitrogenBalance

Anyone know what was done to the C43 heads compared to the regular M113 lineup? I have a feeling the only differance is maybe valve springs? I think the flow, valves, and such are similar??

Someone is interested in buying my heads this weekend, just couldn't give any solid info proving it to be an upgrade.

jayrasheed

Whats diff i think are Cams and valve springs, but thats vs a stock 430 eng. i ould assume the heads are not exactly same part number vs those of the 500 but since its often said that the 43 amg head had some work done to it, it might be just on par with that of the 500.

After all the 2 engines are very close in output on paper,
But i think the 500 engine is more power full than its stated, i say so cause i drove a 2001 cl500 and a 1998 c43 back to back and on the same road, and some how the cl felt faster above the 100 mph

NitrogenBalance

Thanks for the input, and I agree as the 05'SL500 I speak of feels faster than the N/A C43 ever did. To the point were I've considered a 5.0L for the transplant. I summed it up to the increase in discplacement and 40lbs extra torque We may just clean them up a bit and let the dyno speak if nothing is confirmed.

BTW..the owner is retired and has to abilty to play with stuff like this.

jayrasheed

dont want to get on any of the c43amg owners, but when i got my C36 i was also offered to buy a 1998 c43 (the guy owned both cars), and the 36 felt sharper, more connected, and just as fast, with a 7k redline i couldn't say no to the 36 .

i never liked the 430 v8 engine, i say its like the M103 2.6, no matter how u modd it (unless u force charge it like u did with ur AMG ) it feels weak. i sitll wonder how that v8 lacks low end pull. does it realy have 300+hp???

MarcusF

If they're buying complete heads, it's an upgrade. Although the M113 NA bare heads are the same part number (4.3/5.0/5.5 non-AMG and AMG), 1130102020 on the left, and 1130102120 on the right, the roof of the exhaust ports in the C43 heads have been cleaned up. Whoever buys them can see the difference after they're cleaned. The sides and the floor are the exact same. The 4.3 valves are shared with the M112 320, M112 3.2K, M113 500, and C240 (the exhaust valve is shared with the 5.5K, C280, & M112 3.7). Intake valves are 1130530501, and exhaust valves 1130500227. M113 valve springs are part number 1130106205 and shared with the M112 as well. The C43 uses a different spring. It's part number 1130530120. Of course you know, C43 cams are different, which may be why they used a different spring.

jayrasheed

Impressive man!, so can i have ur in put regarding what shocks the EURO C36AMG comes stock with (brand name and part number) :P
thread: https://mbworld.org/forums/c36-amg-c...in-shocks.html

sorry for the off topic

NitrogenBalance

Thanks Marcus, good info there. Gonna pull these suckers off this week and I'll post up some pics if anyone cares to see what Marcus is talking about above.

RBYCC

Jay

My wife drives the C43...
After stepping from the M103-TT and driving the C43 it takes a few miles to get used to it.
The C43 is quick, but it doesn't have the initial throttle response of the M103/M104 modded engines.
It hits the ASR easily if you're not used to it.
The C43 is more sophisticated then the modded I6's and doesn't give a coarse feel of acceleration.
It's deceptively fast....

Ed

P.S.

Go to the MBclub.co.uk "bodywork" forum....I'm doing a detailed thread on building a replica of the Stratton's 1AMG widebody C124.

jayrasheed

Hey ED,

Yes i know the C43 is a fast car, and i am sure over the 100mph mark its faster than the C36 by good margin, i meant to say it just never feels it.
And for sure its alot more relaxed than the boosted M103, we both know how that feels, more like a slingshot especially in 2nd and 3rd.

ill go check your latest work now

MarcusF

I don’t know who the original equipment shock absorber manufacturer was for a C36, or what their internal part number was. Unless it’s for a full on restoration, I wouldn’t buy shocks at a dealer. It’s possible those shocks have AMG specific valving, but it’s also possible that they’re HD shocks that are painted black with an AMG sticker. Some people measure the shock body, note the casting numbers, and then make an educated *guess*, but that’s a lot like looking at an engine and guessing the cam specs. The shocks internal valves determine the rates. If those are rebuildable, aluminum bodied, externally double adjustable, and have a reservoir, I’ll be very surprised. For replacements, I'd buy some Bilstein Sports, some black paint, an AMG sticker, and . . . .

jayrasheed

Thanx for the input, the fronts have bilstein on them, the rears haven't checked yet, they are too dirty to see :P.

am going for sport, and i like the yellow color :P just hope the sport are firmer than the stock.