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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 04-30-2012, 01:40 AM   #21
Hornung418
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What about Rob's info is useless? Clearly you're ill informed and didn't read his post properly. Just because something can handle 9k revs, doesn't mean it's going to hang out there all day. Just means that they are safe to use. Learn to read.
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Old 04-30-2012, 02:46 AM   #22
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valves will be weight reduced by 40%, valve spring clearance will be re-arranged
I'm interested as to how you are going to accomplish that.
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Old 05-03-2012, 08:20 PM   #23
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if youīre able to give us useful information, do it. otherwise donīt hesitate to take your info with you... somewhere else
I've never used one of these before....but I think it's appropriate:




Figure out who Rob43 is yet?
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Old 05-03-2012, 08:23 PM   #24
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I'm interested as to how you are going to accomplish that.
I was more curious about honing the tops of the lifter buckets....that's a new one for me.
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Old 05-04-2012, 01:06 AM   #25
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Originally Posted by MotorMan View Post
I'm interested as to how you are going to accomplish that.
valves will be made of Si3N4

Quote:
Originally Posted by PEI330Ci View Post
I've never used one of these before....but I think it's appropriate:




Figure out who Rob43 is yet?
Did i care? Even if he would be the one and only engine designer in the world, at that point anyone wants me to believe that an M54B30 can revv up to 9000rpm without damage, its over.
this little topic is about information on a special camshaft setup. i donīt care if anyone is using titanium retainers or some other shit. iīve done titanium valves, retaines and other goodies, too. but whats the purpose of that? i havenīt asked about supertech valves or anything like that and if he thinks after my answer he should be ratty... well

so please come back to topic, this one is just about camshafts!
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Old 05-04-2012, 01:15 AM   #26
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Quote:
Originally Posted by daniel_f. View Post
valves will be made of Si3N4



Did i care? Even if he would be the one and only engine designer in the world, at that point anyone wants me to believe that an M54B30 can revv up to 9000rpm without damage, its over.
this little topic is about information on a special camshaft setup. i donīt care if anyone is using titanium retainers or some other shit. iīve done titanium valves, retaines and other goodies, too. but whats the purpose of that? i havenīt asked about supertech valves or anything like that and if he thinks after my answer he should be ratty... well

so please come back to topic, this one is just about camshafts!
Nobody is saying, or wants you to believe that. He just said the cams are capable of tolerating those RPMs. Reading comprehension > You.
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Old 05-04-2012, 01:27 AM   #27
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valves will be made of Si3N4
You have a source for silicon nitride valves for a BMW M54? I haven't had the need to look that hard but I don't remember even seeing titanium valves available for the M54.

BTW- I'm not trying to be a jerk, but I usually say I going to get a drink of water, rather than, I'm going to get a drink of H2O. This forum is read by car guys, not chemists.
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Old 05-04-2012, 04:19 AM   #28
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The only thing I'd question is this:

Would the 272/256 cams work well in the OP's Auto 330Ci ? I'd want to know the answer to this question with at least a little certainty before buying & installing them. If they did work, I'd also install the Supertech Valve Springs with Titanium retainers, about $500 & good to 9000 RPM.


Good luck,
Rob.
OP ROB is just making a recommendation which is his opinion. I think for 272s its not really needed however. But it is recommended by many of the engine builders from my research. I believe the stock valve springs on the B25/B30 head are good for 7K RPM which I think you will most likely end up with. Not sure on the implications on the auto with this kind of configuration but personally I wouldn't bother with a NA aggressive cam set up with an auto. Personally if I were you I'd just boost it.
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Old 05-04-2012, 11:01 AM   #29
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No, it's not 9000, but it's 8500.



M54 with S54 ITBs. "Race" grind cams.

Quote:
Originally Posted by daniel_f. View Post
Even if he would be the one and only engine designer in the world, at that point anyone wants me to believe that an M54B30 can revv up to 9000rpm without damage, its over.
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Old 05-04-2012, 11:51 AM   #30
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Wow, $hit went south in a hurry! There are a lot of firsts that I have never heard of coming from the op like 5angle valve jobs, and rejoining the buckets on the lifters....

Rob is one of the best sources of information on this board, and you decided to be a jack wagon rather than just simply listen to his advice and opinion. No where did he say that the rest of the engine could/shoul/would be revved to 9k, merely that the springs could handle it.

So why get a set of cams that will move your power band farther up in the rpm range 7k ish i think and then just reuse your stock lifters, rathert than buying new ones? Why no port and polish, why on an auto (actually just curious, not judging on that one) why why why?


Btw I have seen some sodium filled titanium valves, that are +1mm for whoever said they hadn't found for the m54
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Old 05-04-2012, 12:18 PM   #31
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Get a M3.

/thread
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Old 05-05-2012, 11:35 AM   #32
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I've heard the retainers are a weak point at higher rpm for these cars. I forgot his name (shame he hasn't been around much) Mrshelly? commented that these motors would eat them at sustained high rpm use.
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Old 05-05-2012, 03:18 PM   #33
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Originally Posted by daniel_f. View Post
valves will be made of Si3N4



Did i care? Even if he would be the one and only engine designer in the world, at that point anyone wants me to believe that an M54B30 can revv up to 9000rpm without damage, its over.
this little topic is about information on a special camshaft setup. i donīt care if anyone is using titanium retainers or some other shit. iīve done titanium valves, retaines and other goodies, too. but whats the purpose of that? i havenīt asked about supertech valves or anything like that and if he thinks after my answer he should be ratty... well

so please come back to topic, this one is just about camshafts!
The m54 can't even rev up to it's stock zhp limit at 6800rpm without running into problems...
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Old 05-05-2012, 03:27 PM   #34
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As for your arguement though; if you build it right, its possible.

This reminds me of when samBROchill made this thread:
http://www.e46fanatics.com/forum/sho...d.php?t=637892
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Old 05-08-2012, 09:00 PM   #35
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Quote:
Originally Posted by daniel_f. View Post
valves will be made of Si3N4



Did i care? Even if he would be the one and only engine designer in the world, at that point anyone wants me to believe that an M54B30 can revv up to 9000rpm without damage, its over.
this little topic is about information on a special camshaft setup. i donīt care if anyone is using titanium retainers or some other shit. iīve done titanium valves, retaines and other goodies, too. but whats the purpose of that? i havenīt asked about supertech valves or anything like that and if he thinks after my answer he should be ratty... well

so please come back to topic, this one is just about camshafts!
Dale Carnegie is your friend.
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