Hi all, i have noticed for some time now on fleebay stainless steel manifolds to suit my m50 325 lump, they're constructed of 304 stainless (a fairly average grade in architectural terms, not sure about automotive?), but otherwise don't seem bad, mandrel bent tubing, CNC machined flanges etc, they feature sensor holes and even come with gaskets. For the price of £100 they seem pretty good value too, if i bought them i would install polyurethane engine mounts to reduce engine movement, but the welding looks pretty good to me (see picture).
So what do you think? Has anyone any experience on the matter, i feel they're +15bhp claim is a little optimistic but i am no expert on the matter?
Could i expect any performance gain? Any ideas on their longevity (assuming they're of reasonable quality)? Should sound good though, my old v8 hil-lux had ss mani's and sounded the nuts.
I got them from a member on here. Ill post a pic up ASAP to show you what they look like. The ones in the picture join in a different place to ours as the front pipes are slightly different. :cool
i havent a clue if they will fit mate, but i bought a full stainless exhaust made from same stuff from ebay, for my civic when had it, turbo manifold etc never had any probs with it. looked good ,well made too.
That looks like it will go on, it should just bolt to your original front pipes. Just double chaeck with the seller first though..
Just prepare yourself for rusty nuts and studs on the old system..:mad
Cost me £30 from BMW today on manifold studs, nuts, gaskets and Lambda sensor plugs....:frown
Cheers for having a looking at that steve. Probabaly purchase it when i have the rest of the stainless exhaust done. Let us know how you get on with your manifold and bhp gains.
look good though once its done and hopefully more power!!!!!!!!!!!!!
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
BMW Forums : BimmerForums
1.5M posts
270.5K members
Since 2007
A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, M series, motorsports, maintenance, and more!