Messages

1

Engine + Driveline / Re: ARP head studs

« on: July 26, 2023, 10:08:51 AM »

Answered!

It's the same torque specs as the M50 engine:

https://tech.arp-bolts.com/instructions/201-4302.pdf

2

Engine + Driveline / ARP head studs

« on: July 26, 2023, 07:51:04 AM »

Just wondering if anyone on the forum has got the torque specs for the ARP head kit?

I've bought one with the part number 201-4M42 but the torque specs didn't come with the kit and when I put the part number into ARP's website it doesn't come up.

Wondering if anyone's fitted ARP head studs, and if so, what torque specs you used?

Cheers

3

Engine + Driveline / M42 camshafts / lifters

« on: October 24, 2021, 06:49:09 AM »

Afternoon all,

Just wondering if you can help me. I've been building a 1975 BMW 2002 with an M42 engine for the past couple of years and this week was the first time it was finally ready to run. The engine was unknown as it was bought already fitted in the car, but we checked the compression etc. a few months ago before the fuel lines went on and it all seemed fine.

Started the car up this week for the first time (it's running DBILAS ITB's, a custom exhaust, custom race loom and a Haltech 550 ECU) and though the car started up fine it sounded like a diesel.

Fine we thought, it must be the hydraulic lifters - we'll run it a little while and hopefully when the oil gets round the engine (which hasn't been run in 12+ years) the noise should go away.

It didn't.

So we think we're going to need to replace the lifters, and whilst there I may as well upgrade the camshaft to a fast road / race one. I've just got a couple of questions please:

- I'm in discussions with Newman Camshafts about a custom set. They've said that I will need to upgrade the valve springs and seats, can anyone recommend a good aftermarket set?

- Does anyone know of a place in the UK where you can get hold of a new timing chain, tensioners etc. i.e. the whole kit to replace? I would be gutted to do all this then the tensioner broke.

- Who supplies a good hydraulic lifter set? Preferably OEM. I may look at going for solid lifters but after doing some reading it may require further mods, I'm not sure.

- Has anyone gone for solid lifters on this engine and what have been the results?

Thanks,

Ted