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Old 08-25-2014, 01:27 PM   #1
jannmann
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Very slow Alpina 4,6l V8 swap

Lets start with engine build.
I was looking cheap replacement for S14B27 engine.
So i bye Alpina F3 engine with head gasket failure.





After disassemble, i look all the parts and think, maybe i do some tuning also before rebuilding it.

Find some S62 parts:



Also i take Alpina heads to flowbench.
Heads flow 580hp/12mm valve lift (28")
Now i know that heads are ok for better cams.
After some search, i go with Schrick 292/284 profiles for S14 engine.

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Old 08-25-2014, 01:35 PM   #2
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this should be interesting.
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Old 08-25-2014, 01:43 PM   #3
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Old 08-25-2014, 01:50 PM   #4
jannmann
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I also cut 1mm from head to get comp ration to 11:1



Alpina cams regrind to Schrick spec.


I also go custom shim under buckets.





Valve springs come from Ford modular 32v engine (eibach race parts)
Upper retainers are from S62.
Now my valve/cam setup can handle 8500rpm.
Of course i use 7500rpm limit, i hope my std rods can take it.
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Old 08-25-2014, 01:54 PM   #5
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My alloy flywheel:



5,9kg +Sachs SRE 765 and std e39 M5 clutch disc
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Old 08-25-2014, 05:33 PM   #6
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Nice work! Do you know what caused the head gasket failure?
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Old 08-25-2014, 06:31 PM   #7
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Old 08-25-2014, 06:39 PM   #8
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Ah yes, European finland/Swedish build always good with you crazy fuckers.
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Old 08-25-2014, 06:44 PM   #9
Denny
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Quote:
Originally Posted by TheTacoMan View Post
Ah yes, European finland/Swedish build always good with your crazy fuckers.
LOL LOL.. so true.

My Euro blood got me in trouble too... I'm past that now I'm just going to take it easy with a simple M62b44 swap
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Old 08-25-2014, 06:48 PM   #10
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Old 08-25-2014, 08:21 PM   #11
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Quote:
Originally Posted by TheTacoMan View Post
Ah yes, European finland/Swedish build always good with you crazy fuckers.
Hahaha right?!

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Old 08-26-2014, 01:58 AM   #12
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Quote:
Originally Posted by JGood View Post
Nice work! Do you know what caused the head gasket failure?
Thats very common on early Alpina F2/F3 4,6 engines. Weak gasket.
Newer 4,6l engines use mls type gasket.
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Old 08-26-2014, 03:45 PM   #13
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I assume those motors are bored a bit, so theres not a big cylinder gap which could contribute to the head gasket issue. Looks like it was occuring at the other cyls too.
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Old 08-26-2014, 04:34 PM   #14
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I'm surprised they didn't use MLS gaskets from the start, BMW made the switch with m62's starting in 97. What year is that engine?
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Old 08-26-2014, 08:01 PM   #15
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Set up on a Shim under bucket 32valve... talk about the kind of headache that will give you sleepless nights.....
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