hi folks this question might had been asked allready
what amount of clearence should i have between the ground and my sump i live in a city with lots of speed humps and dont want to wipe out my sump on the first one i come to

more than i have, mines 7cm..... so 10+

i'm actually going for 8.5cm, i think its too low, but its gonna mess with my suspension geometry if any higher. I like the idea of hydraulic suspension though

target to go for is 4"

should ba able to get away with 3" if your carefull

I was using 100mm and nearly wiped out my sump on the 'square' speed bumps.
120mm is just about high enough but you still need to take care over the little beggars - go between then, never over

Oh and avoid roadkill too - anything bigger than a flat squirrel makes a lot of mess to hose off later.

75mm is do-able but you have to be really carefully about slowing down for speed bumps and be really really careful when going over the bumps with gaps in the middle of the road- if you try and straddle that you're a gonner- your wheels don't rise much and the bump rips the sump off...

100mm+ is preferable....

I have 75mm at the moment to the sump, but am considering raising it to 100mm.

I know there would be problems with speed humps with 75mm, but what about bumpy roads? Of which there are plenty at home...

David

I run at a fraction over 100mm to the bottom of the bellhousing; not hit any bumps - yet.

I was looking at my Falcon last night 2" but then the sump is plated in 5mm steel and its certainly had a few thumps going by the missing paint..