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Old 06-25-2012, 02:38 PM
eduardocastrejon eduardocastrejon is offline
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Join Date: Jan 2012
Posts: 44
vintage racer ,AMG 3.6 HP AND MODS

Im building a vintage rally car with this amg 3.6 engine fitted to 722 trans and 3.92 rear end

this project was not possible without your help
special thanks to Bob Avera (mag52)

rules dont allowed the use of anykind of fuel injection turbo or supercharged engines, then I use 3 dcoe 40 webers with 36 chokes, I wanted 48 size but I already have this 40 size carbs and are new, I replaced the original 27 chokes to 36

Ignition- I will use megajolt ignition box to edis 6 with ford and gm parts, m103 ignition cables with different boot to work with explorer coil, I have 2 of everything.

Engine
I found a 53k at miami

I check compression ,I took out the head and the engine looks like new condition.
still I replace head gasket, valve seals, carter gasket, valve cover gasket
oil filter is relocated remote


trans
the engine is already bolted to the manual trans with single mass lightened flywheel and adapted bigger pressure plate.
shaft from trans to differential was shortened and balance

rear end
difficult to found a 6.2 rear end with lsd, but I finished with a 3.90 rear end with posi and disc brakes
I have 3 complete rear ends 4.10, 3.90 3.65

cooling
3 row aluminum radiator
2 electric fan with variable speed
oil cooler
trans cooler

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questions

The AMG 3.6 M104 was rated at 276 horsepower (206 kW) at 5,750 rpm and 284 pound-feet (385 N·m) of torque at 4,000 rpm

Probably this engine have more potencial in na form.

for reliability purpose (endurance race), I dont want to replace cams, port head or headers.

reading some post, there is no gain in headers

cams- somebody have the duration and lift of m104 cams

rpm redline- I dont want an screamer engine, but I want to know what is the limitation of rpm ? intake?

intake manifold- I´m building an aluminum intake manifold with vaccum ports for map sensor in megajolt box.
the manifold is short (brake booster is near)
Probably I will built a cold box
base line for weber jets is at this moment 55 idle, 130 main
lc1 air fuel ratio sensor and gauge installed

ok, longer the intake manifold = more torque
shorter manifold = more hp
longer stacks = more tq

I know that I lost torque with carbs but maybe I gain some ponies at high rpm.
torque lost probably is not a problem because the car is "light" (2,600 lb)
and the trans gear ratios are shorter between and the almost drag rear end.

if somebody have advice about this project , please let me know

Last edited by eduardocastrejon; 06-25-2012 at 05:55 PM.
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