Siemens 55s

[Dave_M]

What's the maximum power these will run?

Cheers
Dave

[cossiedavid]

400 ish

[SCS j1mbo]

440 roughly with a little safety there

[cossiedavid]

[Dave_M]

...so I'd just about get away with these on a RB T38 / ported head / BD16 inlet? Which would be good as I've already got a set.

ps - Jimbo - you guys will be mapping it

[cossiedavid]

Will they be mapping it on the dyno

[Dave_M]

Haven't thought about that yet....!!

[SCS j1mbo]

Hi dave, sounds good spec to me fella, will be smooth and powerful with that spec.

They will do the job as they will be about flat out at the same time your turbo is (generally t38s fall to 26/7 psi by 7000rpm) so should be fine.
If you were looking to buy some I'd probably say go with the next size up as to kee some safety in the map and future proofing

Ps we can map on the road or dyno, generally we do dyno then in car check t get the perfect map

[Dave_M]

Thanks Jimbo. Would the 83s that AJC is selling be a better bet then - I could then sell on the 55s I've got, as well as the light blues and greens thatI've also got lol!

Dave

[SCS j1mbo]

Yes 83s would be better, it would have good safety then