Rebuild or not: used BMW engine?

[D_Eclipse9916]

I think a lot of people forget that the 325s were plagued with the same crappy retainers that the m3 got, but I still don't hear about as many 325s losing retainers on track cars. I don't know why that is. RRT has a tool to pressurize the cylinder so they can replace the valve retainers with the head still attached. Might just have the retainers replaced by them... for $100 per hour..

...M3s only had crappy retainers on the 95s. And even then, ive heard very little (especially in an autox environment) about problems like that. People on the forums tend to bitch and complain and find wayyyy more problems then there are.

I wont say it wont happen, but for me I wouldnt waste the time and money with a $1200 motor that are known for being dead reliable on track anyway. That said, valve seals arent a bad one to replace, rod bearings, and if your doing valve seals, you might as well do the retainers. DO NOT take off the head.