CSL needs a new block - advice needed

ithinkihaveone · 26-09-2013, 06:31 PM

Hi all, I recently bought a CSL and it wasn't a good one (not long out of the hands of a prolific CSL seller on here with his service stamp so I thought it would be good). In the end, it's my fault for buying it. But now I've got it and I'm going to get it sorted.

The head was loose and it's knackered the head gasket but also damaged the block. I've had the head skimmed and the mechanic says I could take a bit off the block, fit a new head gasket and it'd probably be OK but I want to do a proper job and rebuild the motor, so it's as good as new. So I'm opting for a block from a low-mileage motor, new piston rings and it should be good to go.

A few questions:

1) Is the block exactly the same as the standard E46 M3, down to the part numbers and markings on the block itself?

2) Is there anywhere you'd recommend to source a decent block?

3) If you had to have your engine apart, what other parts would you look at replacing while you're there?

4) Are the standard head studs OK or should I get uprated ones?

5) Is the standard BMW head gasket good enough or should I uprate that too?

6) Have I missed anything?

Thanks in advance.

uncle benz · 26-09-2013, 06:48 PM

I have a 40,000 mile 2004 E46 motor on a stand in my workshop. It is complete, but one of the vanos oil pump drive lugs has snapped off. I could be persuaded to sell it I suppose.

Neil M · 26-09-2013, 06:51 PM

My first question would be; what has the seller had to say about your predicament? Any car sold should be "Fit for Purpose" and that's the law!
Heads don't generally come loose of their own volition, unless it's been removed at some point and not torqued down correctly.
Sounds like it might be a little late in the day to stick it to him!

**CraigMillwardCroft** · 26-09-2013, 07:21 PM

Who sold it to you spill the beans

philo · 26-09-2013, 07:32 PM

That's bad news spill the beans, i would
I'd say standard e46 m3 engine is same except cams etc,don't know about part number
How much do dealer look for a new block? Might be best route,new set of big ends and arp bolts and like new!!

Jon8710 · 26-09-2013, 08:16 PM

Nick Johnson wasn't it,

I remember you asking the question about his dodgy stamp in the book written in pen!

Really sorry to hear this has happened to you but stick with it once its done it will be worth it.

Failing that just get it up and running and stuff it through the wall into his front room.

That will do it.

dave wilkinson · 26-09-2013, 09:25 PM

I hope this is a different car you posted about on july 2nd? - http://www.cslregister.com/forum/sho...t=10724&page=2

if its the same car, shame on you for driving it until now, with it pinking! this will have knackered the block! If its not say so and people on here will be willing to help

26-09-2013, 06:31 PM	#1
ithinkihaveone Wonky 'L' after Washing Join Date: Jun 2013 Posts: 10 Casino cash: $328	CSL needs a new block - advice needed Hi all, I recently bought a CSL and it wasn't a good one (not long out of the hands of a prolific CSL seller on here with his service stamp so I thought it would be good). In the end, it's my fault for buying it. But now I've got it and I'm going to get it sorted. The head was loose and it's knackered the head gasket but also damaged the block. I've had the head skimmed and the mechanic says I could take a bit off the block, fit a new head gasket and it'd probably be OK but I want to do a proper job and rebuild the motor, so it's as good as new. So I'm opting for a block from a low-mileage motor, new piston rings and it should be good to go. A few questions: 1) Is the block exactly the same as the standard E46 M3, down to the part numbers and markings on the block itself? 2) Is there anywhere you'd recommend to source a decent block? 3) If you had to have your engine apart, what other parts would you look at replacing while you're there? 4) Are the standard head studs OK or should I get uprated ones? 5) Is the standard BMW head gasket good enough or should I uprate that too? 6) Have I missed anything? Thanks in advance.

26-09-2013, 06:51 PM	#3
Neil M Driving it like I nicked it Join Date: Jan 2012 Location: Manchester Posts: 2,340 Casino cash: $19143	My first question would be; what has the seller had to say about your predicament? Any car sold should be "Fit for Purpose" and that's the law! Heads don't generally come loose of their own volition, unless it's been removed at some point and not torqued down correctly. Sounds like it might be a little late in the day to stick it to him! __________________ “With the CSL, BMW have achieved The Ultimate Driving Machine” SG CSL '051'

26-09-2013, 08:16 PM	#6
Jon8710 S5, Sport Off, DSC M-track Join Date: May 2012 Location: london Posts: 563 Casino cash: $8371	Nick Johnson wasn't it, I remember you asking the question about his dodgy stamp in the book written in pen! Really sorry to hear this has happened to you but stick with it once its done it will be worth it. Failing that just get it up and running and stuff it through the wall into his front room. That will do it. __________________ 1979 E24 635csi , 730d work horse , Porsche GT4

26-09-2013, 09:25 PM	#7
dave wilkinson S5 - Full Throttle Join Date: Aug 2011 Posts: 252 Casino cash: $6129	I hope this is a different car you posted about on july 2nd? - http://www.cslregister.com/forum/sho...t=10724&page=2 if its the same car, shame on you for driving it until now, with it pinking! this will have knackered the block! If its not say so and people on here will be willing to help Last edited by dave wilkinson; 26-09-2013 at 09:28 PM.

26-09-2013, 06:48 PM	#2
uncle benz S4 - Getting the hang of it Join Date: Nov 2009 Location: West Sussex Posts: 155 Casino cash: $5680	I have a 40,000 mile 2004 E46 motor on a stand in my workshop. It is complete, but one of the vanos oil pump drive lugs has snapped off. I could be persuaded to sell it I suppose.

26-09-2013, 07:21 PM	#4
CraigMillwardCroft CSL Register Uber-poster! Join Date: Oct 2010 Location: Marlow Posts: 3,973 Casino cash: $18153	Who sold it to you spill the beans

26-09-2013, 07:32 PM	#5
philo S3 - On the open road Join Date: Oct 2012 Posts: 112 Casino cash: $2593	That's bad news spill the beans, i would I'd say standard e46 m3 engine is same except cams etc,don't know about part number How much do dealer look for a new block? Might be best route,new set of big ends and arp bolts and like new!!