twin fuel pump conversion

[trackm3]

We ran this same setup on 3 E36 M3 race cars all fitted with around 1200lb springs with no surge at all

[adem.csl]

im guessing the lower the car the less the roll???

[shimmy]

Originally Posted by adem.csl

im guessing the lower the car the less the roll???

The harder you drive.........

[northernjim]

Originally Posted by shimmy

The harder you drive.........

the higher the G forces, the more the fuel sloshes about.....





Adam did you read the part where it says not all cars suffer from this?


I think the answer is that not all fuel pick ups sit in the same place in the tank....

[shimmy]

Originally Posted by northernjim

the higher the G forces, the more the fuel sloshes about.....





Adam did you read the part where it says not all cars suffer from this?


I think the answer is that not all fuel pick ups sit in the same place in the tank....

Mine def was there in 2006 but has got marginally worse over time, now stutters on 3 RH corners just above qtr tank, whereas used to be well below qtr tank it would start.

[northernjim]

Originally Posted by shimmy

Mine def was there in 2006 but has got marginally worse over time, now stutters on 3 RH corners just above qtr tank, whereas used to be well below qtr tank it would start.

Fuel pump getting weaker over time too?



I am not a technical man.... But is it possible to look inside the tank to see how everything is sitting?

[adem.csl]

Originally Posted by northernjim

the higher the G forces, the more the fuel sloshes about.....





Adam did you read the part where it says not all cars suffer from this?


I think the answer is that not all fuel pick ups sit in the same place in the tank....

they say prevention is better than cure!!!!!
imagine you get out there hit a hard corner and bang spluttering.wish i had done that conversion now.im only exploring the idea.bmw have already checked my tank as ive had fueling problems before.(down to exhast)
but your right to open the tank and check its all good costs nothing.thanx nice input

[mattCSLnut]

Originally Posted by northernjim

Fuel pump getting weaker over time too?

They do... mine use to cause fuel starvation around Brands Hatch coming through Clearways, a 180 degree off camber right hander, before the pit straight, with over 1/4 tank of fuel
A replacement fuel pump from BMW sorted this issue and it's been fine ever since

[adem.csl]

[quote=shimmy;140391]The harder you drive.........

love it shimmy.gonna try that!!!!


northernjim has a point.the previous owner has definately used this car on track.i may already have an uprated pump.
will pull it out over weekend

[Mike R]

I'm sure in my trawling through the site, I saw a post by "The Gorilla" about a cheap way of improving the starvation issue by fitting an extension T-pipe, but I can't find it. Might be worth dropping him a PM?