Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Schrick camshaft for MCS info

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Old Jun 16, 2007 | 06:13 PM
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Schrick camshaft for MCS info

I need help on the camshaft part no.

It seems like there are 2 part-numbers for the Schrick camshaft for MCS.

One is 424-01-641-03, and the other one is 424-01-521-00.

Any thing different on those part numbers.
Thank you.
 
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Old Jun 16, 2007 | 07:22 PM
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BTW, I heard that in order to install the Schrick cam, it will required to modified spark plug tube for cam lobes clearance. Is it true?
info from: European Car Mag

Please advise, thank you.
 

Last edited by Maxicooper; Jun 16, 2007 at 08:17 PM.
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Old Jun 16, 2007 | 08:36 PM
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Not sure which one I have, it was labled sport. I will post the number for you later, but I believe there is only one availible now.

It is true that you have to mod the tubes. It is no big deal, just mark the tubes where the cam is perpendicular to them and dent them with a ball peen hammer. Look at the stock clearance to get an idea of how much you need. Be carefull not to hit the bearing surfaces.

It is a pretty easy install, here are some tips:

Mark the crank pulley relative to the cam sprocket to verify timing after the install.

Have someone ready to hold the brakes while you loosen and torque the cam bolt (if you don't have the tool).

Be carefull to center the hydraulic valve tappets when installing the rocker shafts. It is easy to misalign them and pop them off when torquing the shafts.

The right combination of universal joint and long extensions will make removing the chain tensioner a snap.

Have fresh oil handy to lube the cam bearings.

You will need a floor jack to hold the engine up when you remove the engine mount.
 

Last edited by 002; Jul 13, 2007 at 07:27 PM.
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Old Jun 16, 2007 | 09:57 PM
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Thanks for the info.

I'm curious since the one that I've got is 424-01-521-00, and there are some threads show the other part number.
 
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Old Jun 17, 2007 | 01:05 AM
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I have 042401641-03 labled mini cooper s sport
 
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Old Jun 17, 2007 | 06:30 AM
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Originally Posted by 002
I have 042401641-03 labled mini cooper s sport
Yours matched the part number from '07 Shrick catalog.

Hmm..., I've been searching all over. Has anyone still had an old Schick catalog file available?
 
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Old Jun 19, 2007 | 01:35 PM
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Oh, well.
I've been searching and searching, no luck.

Still got no confirmed info the the Schrick no. 424-01-521-00.
The number is on the camshaft and the box, but it doesn't say for MCS.

Anyone's got earlier version of MCS Schrick camshaft to verify the part no.

Thanks in advance.
 
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Old Jun 19, 2007 | 02:32 PM
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Does anyone have a power graph pre/post of a Schrick cam install? Or even better, a comparison between the stock cam, and a couple of different aftermarket cams. I'd be interested to see how the power band shifts with each cam...
 
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Old Jun 19, 2007 | 03:12 PM
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Here is from http://new.minimania.com/web/SCatago...3/ArticleV.cfm

From other sources, they said for the cam itself will improve torque curve the result of gaining 5 - 8hp from 4000rpm up.

I believe it will be a lot more if couple with other mods and fine tuning.
 
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Old Jun 19, 2007 | 09:02 PM
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I actually have that exact article in the magazine! Thanks!
 
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Old Jun 20, 2007 | 07:14 PM
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Originally Posted by Maxicooper
Here is from http://new.minimania.com/web/SCatago...3/ArticleV.cfm

From other sources, they said for the cam itself will improve torque curve the result of gaining 5 - 8hp from 4000rpm up.

I believe it will be a lot more if couple with other mods and fine tuning.
That graph pretty much shows how it feels. It doesn't feel like it lost or gained anything below 3500rpm, so there is a percieved loss compared to the mid and top end increase. The power is noticeable after 4000 rpm and obvious from 5000 to redline. It does not add grunt, but a smooth increase in HP with a nice peaky whip as you reach redline. Since I've had it in I cannot approach redline without being sucked into the limmiter. I wonder how much more is available after 7200. Part throttle response at the low end is a little less snappy, so this may not be for everyone. The nice thing about the added top end is that redline shifts land you in the meat of the power curve instead of just past it with the stock cam. It is very rewarding for someone that likes a slightly peaky engine. Oh and the sound past 5000 rpm at WOT is fantastic.
 
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Old Jun 20, 2007 | 07:51 PM
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That's what I thought and heard from others about the cam.

Oh well, I haven't been able to find out about the one that I have, whether it is the right one or not.
 
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Old Jun 20, 2007 | 10:10 PM
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Originally Posted by Maxicooper
That's what I thought and heard from others about the cam.

Oh well, I haven't been able to find out about the one that I have, whether it is the right one or not.
You may have done this already, but look up the number for a standard cooper, to be sure that's not it. Then call schrick themselves. Have you had this cam for a while or just recieved it in the mail? Have you contacted the seller? The word on the street that I hear, is that there was a street cam and a race cam. Then later only the race cam (maybe the other way around). Prehaps this is an early street cam? Take that with a grain of salt, but somehow that's what's in my memory.
 
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Old Jun 20, 2007 | 10:20 PM
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4240152100 is the number that turnermotorsport shows for the mcs cam. I purchased mine from them about two months ago and recieved the one I posted the number for in an ealier post. My guess is that yours is the race cam (or whichever cam was retained) and has the early part number, but is the same cam.
 
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Old Jun 21, 2007 | 07:13 AM
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Thanks for the information. I will contact Schrick to see what they say.
 
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Old Jun 21, 2007 | 12:04 PM
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Here is the updated information from Schrick:

part no.42401521-00 has been an earlier version produced for the Cooper S.
The specs are:
opening duration intake/exhaust: 252°/260°
peak timing:114°
cam lift int./exh.: 5.77mm/6.24mm
lift at TDC int./exh.: 0.26/0.42mm

the "new" version, part no.: 42401641-03
opening duration intake/exhaust: 264°/272°
peak timing:114°
cam lift int./exh.: 5.77mm/6.24mm
lift at TDC int./exh.: 0.5/0.65mm
I can not find the stock MCS's camshaft profile to compare to the above profiles.

Now, it's time to make an appointment.
 

Last edited by Maxicooper; Jun 21, 2007 at 01:09 PM.
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Old Jun 21, 2007 | 04:46 PM
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Good work, thanks for posting the specs. Sounds like you're going to put it in. Let's us know how it works.
 
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Old Jun 22, 2007 | 05:36 AM
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Appointment's been made.

I will probably do a baseline dyno once it pass 500 miles after installed.

Will keep you update on the improvement.
I expect to see no change below 3.5k and 5-8hp gain (a nice looking delta) above that. We'll see.
 

Last edited by Maxicooper; Jun 22, 2007 at 05:39 AM.
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Old Jul 12, 2007 | 06:48 PM
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Installed.

Good result so far. Has not pushed it hard yet, will wait for couple of hundreds miles more.

No loss at the low end, no CEL, no rough idle, feel some improvement above 4k.

I like it.

Thanks to Eric and his crew at Helix for an awesome job and their great hospitality, as always.
 
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Old Jul 12, 2007 | 07:02 PM
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How many hours labor were you charged, if you dont mind me asking?
 
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Old Jul 12, 2007 | 07:26 PM
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Originally Posted by cooper99
How many hours labor were you charged, if you dont mind me asking?

The invoice was slightly over $300.

I'm not sure about the labor's hours, it might be a flat rate. But It took a brief city tour of Phila, a nice lunch and a movie . And by the time that we got back, the installation and the test drive is done, the car was ready to roll.

The tour, the lunch, the movie, the installation and a nice conversation with Eric and Ralph, worths every penny.
 

Last edited by Maxicooper; Jul 12, 2007 at 07:31 PM.
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Old Jul 13, 2007 | 05:23 AM
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does anyone have a dyno of just the cam being replaced.... when i did mine I did it with the head so I do not have just the cam....
 
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Old Jul 13, 2007 | 05:50 AM
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Originally Posted by SpiderX
does anyone have a dyno of just the cam being replaced.... when i did mine I did it with the head so I do not have just the cam....
I've planned to do it after it break in. Well, it is not going to be the before & after result, but we might be able to study the changes of the torque curve charactor after the camshaft be installed.
 
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Old Jul 13, 2007 | 07:24 PM
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Glad to see you got it in. I thought there was some low end lost, but after driving an msc with only 15% pulley, it feels more like low end part throttle loss only. Full throttle still feels stronger. I think there is just a percieved low end loss compared to how much the top end pulls. I am very curious about what my powerband looks like.

I thought I was ready to pull the cam out for a while until I was forced to drive other cars during the past two weeks, the 15% mcs and a bmw 335. The mcs feels gutless and although the 335 is strong, it still doesn't pull the same way as mine does. Even during test drives with m3's, I thought, is that it. I can't wait to drive my car again tomarrow. I have been born again.
 
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Old Jul 13, 2007 | 09:33 PM
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Originally Posted by 002
Glad to see you got it in. I thought there was some low end lost, but after driving an msc with only 15% pulley, it feels more like low end part throttle loss only. Full throttle still feels stronger. I think there is just a percieved low end loss compared to how much the top end pulls. I am very curious about what my powerband looks like.

I thought I was ready to pull the cam out for a while until I was forced to drive other cars during the past two weeks, the 15% mcs and a bmw 335. The mcs feels gutless and although the 335 is strong, it still doesn't pull the same way as mine does. Even during test drives with m3's, I thought, is that it. I can't wait to drive my car again tomarrow. I have been born again.
2 days and roughly 200 miles after cam installed, I love my car more.

And I think you're right that it is just the feel of comparing the gain at the top end and low end. I didn't notice any loss even with additional load (2 passengers) compare to before.

Actually, I feel the improvement start from right before 4k rpm.

I will keep update on dyno result in couple of weeks.
 
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