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Old 03-21-2017, 11:49 AM   #1
Ozarktroutbum
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Join Date: Mar 2017
Location: Arkansas
Posts: 56
My Ride: 02 325ci W/ 3.0L
2002 325ci swapping to M54B30

I bought a basket case 02 325ci where the original had a timing chain failure. I have a 96k miles M54B30 to go back in and have changed all the gaskets and clutch items that you'd normally do while engine was out.

What I'm looking for is little things that need swapped now while the engine is on a stand. In my internet travels and looking through swap threads here and elsewhere I read something about a S54 timing chain guide that was a better upgrade than the original? Should have marked the thread but it was late and now can't find it....

Can't really afford too many budget busters like an ATI damper at this point but if you have any tips they'd be appreciated.
I'm the owner but not the primary mechanic so I'm hunting for info to pass by him.

Thanks and wish me luck!!
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Old 03-21-2017, 12:58 PM   #2
Ozarktroutbum
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Join Date: Mar 2017
Location: Arkansas
Posts: 56
My Ride: 02 325ci W/ 3.0L
For the record I'm just looking to build a reliable but sporty weekender and occasional mild hooning.
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Old 03-21-2017, 01:00 PM   #3
hitbyastick
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Join Date: Sep 2013
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Posts: 2,243
My Ride: 2002 325i
Timing chain failure? How does that happen. Them sh*ts is near bombproof. Somebody ran it with no oil but just told you the chain failed because they're embarrassed.

Forget about the timing chain guide, which you're probably referring to the tensioner? If so that's a budget buster and you don't need it at all. Check the price out on one of those vs the M54 piece. Just forget about it. Renew the M54 spring for about $7 if you absolutely have to but again not necessary. More of a feel-good replacement than a necessity.

If I were swapping in a 3.0 I would do the oil pump nut, the oil pan gasket, hard coolant pipes, starter, all the rubber bits underneath the intake manifold including the crankcase vent valve and associated plumbing, oil filter housing gasket, and rear main seal, rear intake boot & throttle body gasket. Might only do the rear main if it was leaking. Everything else can be done from up top with the engine in the car rather painlessly. Oh yeah, new engine mounts. Before I changed anything I would degrease & clean the engine to new condition however. Much easier when its on a stand.
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Old 03-21-2017, 02:16 PM   #4
Ozarktroutbum
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Join Date: Mar 2017
Location: Arkansas
Posts: 56
My Ride: 02 325ci W/ 3.0L
Thanks for the reply.

Already have the engine degreased and going to do the engine compartment too. Yeah, I tracked down a number for the M tensioner and it was over $230 US. I remember seeing the oil pump nut fix too. Is that just a stock replacement or an M part upgrade?
Nevermind found it at ECS and see what the deal is.

This came with a few boxes of new gear the guy had collected in anticipation then got disinterested and its been in his garage like that for 2-3 years. I have to lay it all out to see whats there. The original swarmed during an autocross run so it was either an oil situation or an over rev driver malfunction. I have the original engine too and will get into it at a later date and see if its scrap or fix to sell or even build something beefy with it. That guy tore into it enough to see the chain had gone and gave up on it and acquired the other motor. I hauled it all out on a Uhaul car carrier and a truck bed FULL of stuff.
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Old 03-21-2017, 07:07 PM   #5
BaliDawg
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Join Date: Aug 2012
Location: Riverside, CA
Posts: 5,520
My Ride: E24 E32 E46 E39 E84
I'll throw my B25->B30 swap list into the mix for perusal.

Engine Rebuild Replacement Parts:
soft heater hoses
the two hard plastic water pipes under the intake manifold
cooling system refresh
both coolant temperature sensors
all vacuum lines
CCV parts
air distribution manifold o-rings
oil filter and two small o-rings
oil filter housing gasket
oil dipstick o-rings
oil pan gasket
rear main seal
valve cover gasket
motor mounts
starter
replace the oil pump nut with a safety-wire secured one
rebuild the DISA with the G.A.S. kit
VANOS seals
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Old 03-22-2017, 08:31 AM   #6
Ozarktroutbum
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Join Date: Mar 2017
Location: Arkansas
Posts: 56
My Ride: 02 325ci W/ 3.0L
Wow. That's a list of gear!

The only thing from both lists that really surprises me is the starter. Must be a PITA to change.

OMG! I just watched a Youtube on e46 starter removal. I am buying a new starter RIGHT NOW!!
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Old 03-22-2017, 09:13 AM   #7
paraklas
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Quote:
Originally Posted by Ozarktroutbum View Post
I bought a basket case 02 325ci where the original had a timing chain failure. I have a 96k miles M54B30 to go back in and have changed all the gaskets and clutch items that you'd normally do while engine was out.

What I'm looking for is little things that need swapped now while the engine is on a stand. In my internet travels and looking through swap threads here and elsewhere I read something about a S54 timing chain guide that was a better upgrade than the original? Should have marked the thread but it was late and now can't find it....

Can't really afford too many budget busters like an ATI damper at this point but if you have any tips they'd be appreciated.
I'm the owner but not the primary mechanic so I'm hunting for info to pass by him.

Thanks and wish me luck!!
If you mean the tensioner piston, not the guide, here it is:
http://forum.e46fanatics.com/showthr...&highlight=s54
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Old 03-22-2017, 09:42 AM   #8
Ozarktroutbum
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Join Date: Mar 2017
Location: Arkansas
Posts: 56
My Ride: 02 325ci W/ 3.0L
Quote:
Originally Posted by paraklas View Post
If you mean the tensioner piston, not the guide, here it is:
http://forum.e46fanatics.com/showthr...&highlight=s54
Thanks. That was the fix I had read about but probably not going to do because of the part is so high. Also I think its really recommended for high RPM application and I wont be going there much. Famous last words huh?

We'll probably open it up and check for wear and replace anything that looks suspect and then new gasket and call it good. My mechanic buddy starts burning incense and chanting to himself whenever I mention the Vanos so I won't push him to far into that unless we see noticeable signs of wear.
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