Show Me Your BMW!!!!!!!!!
Discussion
Beedub said:
just out of hibernation..... forgot how fast this little car feels.. back with its new genuine v8 m3 18s that full the arches to the limit....
Nice to see someone going for less than massive wheels for a change. This is what I'm thinking of doing to mine.
Edited by Beedub on Tuesday 8th April 22:05
Edited by Beedub on Tuesday 8th April 22:05
ATM said:
Nice to see someone going for less than massive wheels for a change. This is what I'm thinking of doing to mine.
the downsize has been a win win, imo better looks, much more exclusivity ( aggressive track biased alignment needed to run these) cheaper tyres, better ride.. i did love my old oem 19" CSLs but i got so bored of seeing every other bmw with either CSLs or Reps of them.... i did love them but with how i use my car and the boredom of them i decided to make it a head choice move and go back to an 18" rim, its been a really good move and although the pics never do the wheels justice the detail and look of them is incredible up close and in the flesh....
Beedub said:
ATM said:
Nice to see someone going for less than massive wheels for a change. This is what I'm thinking of doing to mine.
the downsize has been a win win, imo better looks, much more exclusivity ( aggressive track biased alignment needed to run these) cheaper tyres, better ride.. i did love my old oem 19" CSLs but i got so bored of seeing every other bmw with either CSLs or Reps of them.... i did love them but with how i use my car and the boredom of them i decided to make it a head choice move and go back to an 18" rim, its been a really good move and although the pics never do the wheels justice the detail and look of them is incredible up close and in the flesh....RoverP6B said:
Beedub said:
just out of hibernation..... forgot how fast this little car feels.. back with its new genuine v8 m3 18s that full the arches to the limit....
Lovely, looks better than CSLs - is this a proper M?
cerb4.5lee said:
Its even better than that its a S54 with a Supercharger bolted to it so it generates strong power and he keeps it pristine too.
Hmm, how does the blower affect the throttle response? Additional powertrain inertia, frictional losses etc... about the last thing any S54-powered car needs is more power!RoverP6B said:
cerb4.5lee said:
Its even better than that its a S54 with a Supercharger bolted to it so it generates strong power and he keeps it pristine too.
Hmm, how does the blower affect the throttle response? Additional powertrain inertia, frictional losses etc... about the last thing any S54-powered car needs is more power!E65Ross said:
RoverP6B said:
cerb4.5lee said:
Its even better than that its a S54 with a Supercharger bolted to it so it generates strong power and he keeps it pristine too.
Hmm, how does the blower affect the throttle response? Additional powertrain inertia, frictional losses etc... about the last thing any S54-powered car needs is more power!RoverP6B said:
Lovely, looks better than CSLs - is this a proper M?
its real rover.... with some spice... made 520hp on its last pump fuel only dyno. its a centrifugal blower so it basically feels like I've removed the s-6 and fitted larger motor... throttle response, etc has not changed one bit... Tq curve and HP curve were identical to a stock s54 just higher up the graph.... alot higher.... this is what i LOVE most about this kit, you still need to rev it to get it moving, blower is abit noisy at times but i can still hear that lovely mechanical s54 doing its thing... would i do this again??? NO.... but I've owned this car for nearly 7 years now.... i can't let i go... so am happy to keep pushing it a little further... everything needed to support this power level has been addressed, long road.... but fun too.... i do understand your concerns however.
Edited by Beedub on Wednesday 9th April 16:53
E65Ross said:
Superchargers are far better than turbochargers for immediacy of response IIRC.
Aye, but they're still not going to offer QUITE the response you get from a finely balanced naturally aspirated straight six... this particular installation looks to be pretty good (what's the difference between a centrifugal blower and the conventional Rootes type, btw?), but I think if I had one I'd leave it well alone... has it honestly got the traction to put down 520bhp? How does the extra power affect your ability (if at all) to have fun in it at non-license-losing speeds?RoverP6B said:
Aye, but they're still not going to offer QUITE the response you get from a finely balanced naturally aspirated straight six... this particular installation looks to be pretty good (what's the difference between a centrifugal blower and the conventional Rootes type, btw?), but I think if I had one I'd leave it well alone... has it honestly got the traction to put down 520bhp? How does the extra power affect your ability (if at all) to have fun in it at non-license-losing speeds?
heres a graph for Vt2 s/c unit on the s54... (shown in Wheel HP) take a look at the stock curves Vs the blown ones.. basically mirrors up and sticks it higher up the graph.... its a blast to drive.
take a look at this video and the caparisons between each blower type... (2.58 is the centri explanation)
https://www.youtube.com/watch?v=RXVyweyoPfE
Traction on street tyres can be a problem but tbh its very very easy to metre out since boost is built by revs....,you can have fun with the car on the street short shifting and you can still get a move on, ring it out and it becomes uncomfortable quickly and tbh rather dangerous. Drive sensibly you can't even tell its tuned, drivability is fantastic and completely docile when you want, mid range and top end is nothing short of ballistic. Its been a long road but the car provides endless smiles and fun, best enjoyed on a circuit, i was brought up watching sprints/hill climbs so i wanted to create something for that arena, the car hasn't disappointed and everyone the rides in at is left breathless.... However on the flip side its taken alot of mods/work/testing to get it all working to the standard it is now.... Semi slicks are a must.
great fun (here on my home sprint circuit, curborough sprint course)
Edited by Beedub on Wednesday 9th April 21:24
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