whens a good time............

[Furious]

when is it ok to rebuild an engine. i mean as far as Kilometers or miles? im curious because i may wanna rebuild my engine in the future instead of going to an M3 engine. now ive heard bad things about boring out the engine. can someone please explain why? i wanna know if it would be very bad for the engine block if i were to Force induce it (thinking Turbo) lots of random thoughts in this thread but i just wanna know what you guys think. also ive only got like 227,000 kilometers on the engine which is around 141,100 miles.

[Scarface]

i am in the same boat as far as wanting to rebuild and go turbo, my car has almost 162,000 miles on it....also smokes a little under hard acceleration

[fatty]

i looked at a super charger conversion for my 328 and was told that if my engine had done too many miles it wouldnt cope.....

.depending on how much of a rebuild/tune up your going to do will depend how well your engine will cope/last....... best thing to do is ask the people who are going to do it...

[GreenDragon]

What about re-sleeving after boring? And aren't there kits to bolster the walls of the engine also?

[FruityOne]

well the 325 blocks are already bored out to their limits almost so if you do bore you cant bore very much

[Furious]

im thinking only a little bit , to make it a 2.6, 2.7 at max.

[BlackTape]

I thought the 328 was a bored out version of the 325 engine?



I know with the M3 3.2L engine you can bore out to 3.6!!!

[Furious]

Originally posted by RedTape@Jul 2 2003, 02:04 PM
I thought the 328 was a bored out version of the 325 engine?



I know with the M3 3.2L engine you can bore out to 3.6!!!

thats interesting i always thought that the 325 and 328 were the same engine , just one was bored bigger. any validity to that?

[MrM3]

Originally posted by Furious+Jul 2 2003, 03:16 PM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Furious @ Jul 2 2003, 03:16 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-RedTape@Jul 2 2003, 02:04 PM
I thought the 328 was a bored out version of the 325 engine?



I know with the M3 3.2L engine you can bore out to 3.6!!!

thats interesting i always thought that the 325 and 328 were the same engine , just one was bored bigger. any validity to that? [/b][/quote]
the 328 is a M52 and a 325 is a M50, but they are basically the same engine just alot of internal stuff was upgraded in the M52's, alot more than from the M52-M54 change.

if you cant bore out very much, maybe you can stroke it to 3.0L or more. i know thats a very popular thing to do on e30's.

[Furious]

i was reading an article about rebuilding and it was very informative. ill write up an FAQ later about it. thanks MrM3 for the info