I am sure Scooter said there was a reason not to over Rev these engines, maybe I misread it?
Steve
DO NOT under any circumstances over rev these engines, original engines do not have forged internals. Standard con rods and bolts are weak and not up to over revving.
Nich.
Nicholas John Peter Tinker - # 484
Manufactured on Tuesday 27th April 2004 @ 12.17.47.
Commission Number: 24468.
Brochure Model: M3 Tourer 4.6 V8 260PS.
Specification Code: L01B.
CICode: D1511.
Trim Level: TL8.9 (M3).
65th ZT-T 260SE to be made out of 115.
11th ZT-T 260 SE in Pearl Black (PBT) out of 23 produced.
Manufactured in the UK by MG Rover Group Ltd.
With circa 400bhp i'm not removing the cats to try and chase anymore power. They are showing some signs of damage so taking the opportunity to start the progress of replacing the exhaust system for a wider bore stainless one (was thinking 3", though it's tight over the axle so looks like 2&3/4'' will likely be the max) and fabrication replacing the cats and centre section is fairly straight forward. The rear section is more effort and cost and will be done once I know the car is in full health and saved some more pennies!
I'm not looking to rev the nuts off her but the history and spec of past engine replacement and rebuild confirms she has a forged short block bottom end, forged pistons & con rods from Sean Hyland Motorsport amongst a number of other upgrades. So she 'should' be pretty robust.
Yep. £10/11k for a supercharged low mileage 260 was always alarming low. I hope it's nothing too serious, but make sure you have a repairs pot budgeted