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Help! New Motor


kissov356

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My mechanic put a "factory rebuilt" motor in my 1974 2002 tii. Looking at the new engine some things look strange. It has a 12.5mm drain plug, my old motor had a 22mm drain plug. It has a single timing chain, my old motor had a double chain. It has a different oil filter. All signs indicate that this is a 318i motor not a 2002tii motor, is this a bad thing? I paid for a 2002tii rebuild, should I be worried? What should I do?

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Give us the BMW part number from the invoice

is there a mechanical fuel pump blanking plate

on the cylinder head? or is the pump mounting holes

not present in the casting?

what casting numbers are on the head on the intake side

like '121' etc ?

BMW 'factory' exchange motors do come with a 'new' style

oil filter head and 'new' filter cartridge (Long Life Filter insert)

'86 R65 650cc #6128390 22,000m
'64 R27 250cc #383851 18,000m
'11 FORD Transit #T058971 28,000m "Truckette"
'13 500 ABARTH #DT600282 6,666m "TAZIO"

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We need the casting on the head- 121, E12, E21, 1.8i are the 4 options here.

The factory's been using the single chain since the early 80's-

they don't feel it matters for a stock engine, and they probably know

what they're talking about, since they made the parts.

No- one's posted problems with the single. EVER! (do you myth?)

The head casting defines the pistons, and the pistons differentiate

between models. I suppose, if you really wanted to be sure,

you could run a borescope up your drain plug (ahem!)

and count the counterweights. A 318 only has 4 (6?) whereas a

2002 has 8 (so does a 320, but that's a 2l engine anyhow...)

I suspect you're fine.

The factory rebuild is always a safe bet.

Especially if you're not a diy sort.

t

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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