Author Topic: shopping for 318is with blown headgasket (Read 2250 times)

n2motorsports · « **on:** May 23, 2007, 11:47:55 AM »

Hi everyone, been reading a lot and have decided to take the plunge...sorta.

I am looking into getting a 318i with a blown headgasket for practically free. The body and interior are in decent shape but I do not know how bad the engine is, I will view it this Saturday. Talking to the owner, he drove it to it's demise and really has limited knowledge about cars. How can I tell if it's just a blown headgasket vs. a cracked head? Seems like I would have to remove the head for that. Additionally, I've called a few BMW specialist and they have all quoted me anywhere between 2.5k-3k assuming worst case scenario (cracked head) and replacing the timing chain as well.

Other possible options:
a. find suitable replacement engine and swap entire engine out. This would be something I could do, since it would basically be a plug and play, correct?
b. pass up the deal, and look for a good condition 318is ~ 3k.

Also, what are other things to consider while the engine is out, I know the list is endless, but what are some critical components that can be replaced for a reliable daily/weekend warrior?

Sorry for the lenghty post and thanks in advance for your input.

gearheadE30 · « **Reply #1 on:** May 23, 2007, 04:41:31 PM »

If it is a blown gasket, it most likely exploded in a giant cloud of smoke. Cracked heads tend to be more of a coolant-in-the-oil problem. If the head is cracked bad enough to produce a lot of smoke, then it will be visible from the outside. just look carefully. Removing the head is really the best way to know, but if you have to replace the engine anyway, it probly isn't a big deal.

If the engine is out, and depending on miles, I would get a new chain, tensioner, and guides if they are worn. Also, make sure the engine and tranny mounts are still good, and, if you have some extra $$, lightweight flywheels are nice.

Water pumps and thermostats can also be problematic on high-mile cars.

I'm sure there are people here with more/better information, where are you?

Good luck with the shopping; 318is's are great cars.

n2motorsports · « **Reply #2 on:** May 23, 2007, 09:04:10 PM »

^^ thanks for the input. I'll see what the owner has to say, and will definitely take a peek under the oil cap for excessive rad fluid in the oil.

I'm in San Diego, lately, the number of 318i/is have been on the decline around here, though I am still close enough to LA or OC to drive for a deal.

silverblades181 · « **Reply #3 on:** May 24, 2007, 06:35:34 PM »

Just buy a used M42 for like 500$. Get one with a clean history...a lot cheaper then rebuilding the other one. And you'll have a spare one with parts too.