Originally Posted by jayrasheed

i need that link

Originally Posted by appatula

I agree, I'm just as curious as you Jay! Unfortunatley I don't think this link exists....

Originally Posted by jayrasheed

haha ya i just want to see what he has done to push a 2.8 to give almost 90 hp /L
i know how to get a 3.2 to make a solid 250-260 hp but a 2.8 at best is good for 230hp
unless money is no object and one is willing to ditch original ECU for a stand alone.

So hows ur AMG doing, its slightly faster than the M103 W124 :P
how do find its build quality for that of the W124?

I love the AMG's interior cause mine doesn't have wood inserts but rather the euro spec plastic which ironically is a better match to the sporty nature of the AMG.↲have u found ur self a secluded mountain pass where u can go at it?

Originally Posted by speedybenz

If your going to keep your 2.8 engine I would look at getting some lighter and larger valves for the head. Use the E55 valve springs and get some smaller diameter valve guides machined. By getter a larger valve in the head you can flow more air and by using a lighter valve you can rev and engine up higher.

Make sure the piston to head clearance is no more than 0.040". Anything more and it slows the burn rate of the cylinder down and you have to use more timinig to make power. The less timing you need the better or more effiecent your motor is running.

I would lighten the crank by having the outer diameter of the crank taken off. And I would find some lighter rods and pistons. Deck the head to up compression to 11:1. Only have the ports cleaned up to remove casting marks and then find someone who can do a really good valve job with your new parts. A really good motor should make about 85 ft-lbs of torque per 1000cc. So your 2.8 can make up to around 238 ft-lbs of torque and if this is made at say 5500 rpm (your max torque peak) then you can make aournd 250Hp out of you motor at 5500 prm. With the new parts find someone who can raise your rev limit to say around 7000 to 7500 rpm to take advantage of the lighter valves and pistons. At 7000 rpm if your engine can make around 225 ft-lbs of torque you would then make 300 Hp.

The next thing to do to really make a difference is get light wheels. You can get 17x9.5" wheels that weight only 15 -16 lbs each and that will make a big change. Remove all the things that are heavy. I removed 250 lbs off my 1st W202 a 1999, C280 and it really made a difference in the way it went and handled.

Originally Posted by jayrasheed

So its all in speedybenz’s head and just a theory. Well we all know there are no shortage of theories on how to make power out of engines, but how many have we seen put to practice!!!!!!!
A friend of mine, has an E36 BMW 3.0 M3 engine that runs a tuned ECU with No AIRmass, lager exhaust system, some seriously hot cams, and revs to 9000 rpms, with modified internals, and all he made was go from 286HP to just abt 325hp.

I really doubt a 2.8 M104 will go from 192hp to 260 hp on a headjob. And why would a 2.8 need larger valves??? The 3.6 uses the same valves as the 2.8 so the limitation is not there to start with, I do admit that they offer some limitation and especially on the 3.6, but still they aren’t whats limiting the power.

At best one can try to fit the cams from a 3.6 and its ECU, free flow exhaust, and the 2.8 might make some 30 hp more, say abt 215- 220 hp.