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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}


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Old Sun, Apr-08-2018, 03:49:04 PM   #1
Briantic
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Post S65 Rebuild Cost Tracker

I realize I’m new to this forum, but I’m not new to BMW’s. My second car (the first which shall not be identified..) was a ‘99 328is just about a decade ago and I have been hooked ever since. That 328is turned into a ‘95 M3, which turned into a ‘98 M3, which turned into a recent 57k mile ‘05 M3 that I’m currently doing an ESS stage three blower build on. It has an E39 M5 brother that’s on its way out of the door to fund the blower. I digress.

My recent car search after the ‘98 M3 had two main contenders, the E46 M3 and the E9x M3. I ended up going with the E46 partly because it’s always been something I lusted over, but also because any type of real engine work on the S65 seems to still be ridiculously expensive.

I feel there are quite a few others that are like me waiting for the “newness tax” to deflate on these chassis’. For example, building my S54 with lowered compression forged internals and a fully built head will run me under $10k. A stock rebuild on an S65 is right at $18-20k (last I checked). Common sense tells me the prices will never be even due to all of the extra parts and labor involved with the S65, but the current price still has quite a bit of inflation in it.

My goal is to keep this thread updated with user info from current owners that are going through S65 rebuilds currently; information such as:

-Business name
-Work being performed
-Amount of time needed to complete the build
-Did you provide the complete car or just the engine (local or shipped)
-Notable parts being used (forged rotating assembly, titanium valves, cam upgrades etc)
-Labor cost
-Parts cost

Whatever else you feel is worth mentioning as well. Not only will this help people like me who are watching intently to see when the right time is to snatch up an E9x M3, but it will also help current owners not only find competent businesses to complete the work but also give them competitive pricing info to make an informed decision.

I’ll keep the following post updated with all info.

Last edited by Briantic; Sun, Apr-08-2018 at 03:53:12 PM.
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Old Sun, Apr-08-2018, 03:49:24 PM   #2
Briantic
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Default Re: S65 Rebuild Cost Tracker

*Reserved*
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Old Sun, Apr-08-2018, 11:55:31 PM   #3
pbonsalb
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Default Re: S65 Rebuild Cost Tracker

If you have a good core, you can buy a 4.2L bored Dinan S65 for $15k.
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Old Wed, Jun-13-2018, 07:45:26 AM   #4
marlenjsharpton
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Default Re: S65 Rebuild Cost Tracker

This modified BMW 135i with an S65 bored and stroked V8 engine is up for grabs on Bring a Trailer.
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Old Sun, Jul-08-2018, 03:48:49 AM   #5
bigjae1976
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Default Re: S65 Rebuild Cost Tracker

Unless something is broken or it spun a bearing, I don't see how an S65 rebuild is going to cost $18-$20k.

$7k-$9k for a good core, address the rod bearings, throttle actuators, ICV, and gaskets...should be good to go. Might need to do the mains and then might as well replace the damper at that point.
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Discussing S65 Rebuild Cost Tracker in the E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) Forum - {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)