135k miles, don't 3IM

david_connoll · Today, 06:24 AM

I'm Ireland and have a 325i m sport 3 litre manual car.
I'd love to add a 3IM and a tune to get a few extra bhp.
Is 135,000 miles too used an engine to be doing this?
Timing chain done at 100,000.
Any general advice would be great.

Tambohamilton · Today, 06:32 AM

It's fine, crack on.

whyzee125 · Today, 10:43 AM

Only if every stock 330i was about to expire at that mileage. Absolutely zero worries, proceed with confidence.

cosmosschwarz · Today, 11:11 AM

Why was the chain done? I've had multiple BMW inline 6's over 200k and have never seen a timing chain go bad, other than the guides/tensioners on the V8 cars.

Today, 06:24 AM	#1
david_connoll Registered 0 Rep 1 Posts Drives: 325i m sport 3L Join Date: Oct 2024 Location: Dublin, Ireland iTrader: (0)	135k miles, don't 3IM I'm Ireland and have a 325i m sport 3 litre manual car. I'd love to add a 3IM and a tune to get a few extra bhp. Is 135,000 miles too used an engine to be doing this? Timing chain done at 100,000. Any general advice would be great.
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Today, 06:32 AM	#2
Tambohamilton Brigadier General 3158 Rep 4,018 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	It's fine, crack on.
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Today, 10:43 AM	#3
whyzee125 Brigadier General 1957 Rep 3,986 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	Only if every stock 330i was about to expire at that mileage. Absolutely zero worries, proceed with confidence.
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Today, 11:11 AM	#4
cosmosschwarz New Member 8 Rep 27 Posts Drives: E91 325xi Join Date: Aug 2023 Location: Delaware iTrader: (0)	Why was the chain done? I've had multiple BMW inline 6's over 200k and have never seen a timing chain go bad, other than the guides/tensioners on the V8 cars.
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