300E Cams

Anyone know of someone (besides over priced renntech) who makes a cam for the 300E? I know that bekkers carries them, but how effective have they turned out? Or does anyone know a company who makes a blank cam that can be custom ground? I am very interested in doing this soon as the heads come off anyway for flow benching next week...


Thanks again

Jason M.

[ke6dcj]

Schrick has cams for the 300E, about $535. Call Performance Products.

HOWEVER, these cams merely push the HP up higher in the RPM band, and the torque as well.

I would not do it unless you really like to rev your motor all the time. It will lose torque off the line.

Money is better spent finding a 3.27 or 3.47 diff from a 1988-90 300TE wagon or 1987-1988 diesel.

Best of luck,
:-) neil

hey jason

if you are still interested in that camshaft, bekkers definitely has that shrick camshaft. i just bought one. ask for a guy name tony downs at ext 16. tel # is (800) 624-5410.

if you want to re-work your original cam, call elgin cams. tel # is (650) 364-2187. they are about $150. definitely under $200.

hope this helps.

andy

If your car has automatic transmission, you should not change the cam. If you do, your car will be slower 90% of the time.
If you have a manual gearbox and do not mind abusing the engine, then that is a whole different matter...

public enemy

thanks for the advice. but why do i not change the cam if i have an automatic transmission?

did you know this becuz you experienced this on your 88 300E? if so, did you put back your original camshaft back in?

let me know.

andy

Anytime we are dealing with an automatic transmission especially one which is paired with a low ratio gearing and a heavy car such as the 300E, we need as much torque at as low rpm as possible to get the car moving.
Now, when you put a higher duration cam, such as the performance cams mentioned above, what you are actually always doing is taking some of the torque from low rpm and exchanging it for some more HP at higher rpm.
It is true that with today's more advanced computer simulation programs for cam design, we can minimize this tradeoff. Therefore today's cams can make up to some extend for the loss of torque by using higher lift and more carefully chosen lobe separation angles which in combination with more advanced exhaust systems can offset to some extend the loss of torque.
As a matter of fact, I happen to have such a computer program and if you can provide me with the specific data of the two cams (both the stock and the performance cam) I would be glad to run it for you and tell you how much torque you are going to sacrifice and how much more HP you are going to get in return.
Now, if you have a manual tranny, things are different because simply you can make up for the loss of low rpm torque by taking off the line at higher rpm or by downshifting accordingly and keeping the engine at the higher rpm. On the automatic tranny you do not have this option. Many people with automatic transmissions did the mistake of changing cams with the intention of making their cars quicker but soon realized the mistake.
There is another thing that may be of consideration and this is the fact that a higher duration cam will increase drastically the HC content of the exhaust and may not allow your car to pass smog. Of course this is of no concern for racing use, but I assume that you want your car to be driven in the street.

p.e.

thanks for the advice. i don't know the specs on the stock or the schrick cam. i'll try to find out.

what kind of software do you have to make this type of comparison?

later.

andy

Actually, I have two such programs. The first one is called Engine Analyzer and is a professional grade program, the second one is the famous Desktop Dyno 2000 which is a much less elaborate one.

hey p.e.

i have the some specs on the schrick cam.

duration is 268
valve lift is 11.4mm

andy

To run the program, the following info is needed for the cams:

Lobe center angle (cam degrees)
Intake centerline (crank degrees)
Intake and exhaust duration (crank degrees)
Intake and exhaust lift (crank degrees)
Engine compression ratio

American aftermerket cam manufacturers (such as Comp Cams, Iskinderian, Crane cams, etc.) supply these figures with every cam, but I do not know if European or Japanese manufacturers will have these numbers available.

sorry p.e.

schrick doesn't give me all that info.

ai

I have a manual transmission 300E with an M103 engine and five speed manual transmission. I think these engines are already too peaky. More cam would just make mine LESS fun to drive not more.

Don't get me wrong, I love the car, but it would be SOOO much more fun to drive if it had a little more low to mid range torque.

My $0.02,

[chuni959]

Originally Posted by LarryBible

I have a manual transmission 300E with an M103 engine and five speed manual transmission. I think these engines are already too peaky. More cam would just make mine LESS fun to drive not more.

Don't get me wrong, I love the car, but it would be SOOO much more fun to drive if it had a little more low to mid range torque.

My $0.02,

Would a 16v tranny fit in the 124?

[t walgamuth]

i should think it would be a bolt in.

remember that it is a 1 to 1 fifth gear. no overdrive.

it might be a good match for the cam. perhaps you could get a cam with characteristics similar to the 16 valve engine's cam.

tom w