z4 2.5 to m motor transplant

[Chris04Z4]

put a LS6 in it

[gizmo83]

Do this M5 v10 Z4m

[GP20]

Originally Posted by mousitch

You got that 2.5 up too 250Hp? I'd be happy with that. That's quite a boost in itself. Going from 184 to 250 with intake and throttle body?

He's probably using ricer math. "If exhaust gives me 5hp and intake gives me 10hp and headers give me 15hp and ECU tune gives me 10hp, then I must get 40hp when all combined."

[mkivbora]

Originally Posted by GP20

He's probably using ricer math. "If exhaust gives me 5hp and intake gives me 10hp and headers give me 15hp and ECU tune gives me 10hp, then I must get 40hp when all combined."

ha ha ricer math!! thats great again my vbn file and dyno did me justice.. its ok,

back to topic please!

[mkivbora]

Originally Posted by mkivbora

ha ha ricer math!! thats great again my vbn file and dyno did me justice.. its ok,

back to topic please!

im just gna go buy a z4m so game over

[onebluemcm]

Originally Posted by shift@red

prob cheaper to just buy a z4m.

Uh, yeah, in the long run, I'd definitely bet on cheaper. And more reliable. And easier to sell. And maybe easier to repair.

It's not like anyone does a major swap like this in almost any car and it's just done with no problems. I mean, yeah, it was one thing when the only connections from the motor to the rest of the car were water lines, fuel lines, electric to a coil and a throttle cable - you *might* be able to do that kind of swap and have it work with out too much headache. An S54 into another non-S54 chassis? Have a big wallet and unlimited patience...

[GP20]

Originally Posted by mkivbora

ha ha ricer math!! thats great again my vbn file and dyno did me justice.. its ok,

back to topic please!

Next time go to a dyno shop that knows what they're doing and ask for RWHP. If you were smarter you would've at least gotten a baseline dyno before you started doing all those mods. You can't get true crank HP unless you pull out the engine and dyno the engine directly. Any drivetrain loss is just guesstimate. Any shop can make any dyno result look good or bad depending on their mood. The fact that your car got 250HP on the dyno sheet means absolutely nothing. Different brands of dyno machines give you different results too; some read higher, some read lower. Do yourself a favor and do more research on it before you go waste more of your money on pointless dyno runs.

The M54 has been around for long enough - the mods you mentioned you got don't gain you 65~70HP.

[mkivbora]

Originally Posted by GP20

Next time go to a dyno shop that knows what they're doing and ask for RWHP. If you were smarter you would've at least gotten a baseline dyno before you started doing all those mods. You can't get true crank HP unless you pull out the engine and dyno the engine directly. Any drivetrain loss is just guesstimate. Any shop can make any dyno result look good or bad depending on their mood. The fact that your car got 250HP on the dyno sheet means absolutely nothing. Different brands of dyno machines give you different results too; some read higher, some read lower. Do yourself a favor and do more research on it before you go waste more of your money on pointless dyno runs.

The M54 has been around for long enough - the mods you mentioned you got don't gain you 65~70HP.

next time im up in seattle we can go from a 60 roll . you let me know how the car does. but since im buying a m3 now and doing stg 1 hpf. i dont care about the swap anymore. the gf loves the car in its current sitting .

[tofu4]

do a 2JZ. that would be crazy fast.