fuel filters
Turbo Mini Forums

I have a fuel filter like this: http://www.ebay.co.uk/itm/Bosch-0450905021...=item58a83f1260

I'm planning to put this before the pump rather than after is it should be. Is this a good idea? can anyone see any problems with this?

Team www.sheepspeed.com Racing

That is a bit fine for pre-pump use.

We use the Merlin/Sytec bullet filter with a 55 micron element before the pump.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I use these. Flow rate doesn't change between the 30 and the 100 micron. So I went for 30 pre and 30 at the carb.

Not sure if that's right thing to do but made sense to me.

http://m.ebay.co.uk/itm/AN-6-AN6-Black-Ano...6.c100408.m2460

Edited by jonny f on 20th Oct, 2015.

I ran out of fuel flow on those Torques filters on a 205 turbo (injected, 3bar fuel pressure) at about 190 horse, so just be careful.

Interesting, it get blocked up?

I've used one with 100hp on a mechanical pump.

Interesting Tom. Was that with it after the pump?

I've got one on mine and have had a few fuelling issues since.

In the 13's at last!.. Just

It didn't block, it just restricted flow. The car was plumbed in an6 fittings so we were able to easily plumb in a pressure sensor and the log fuel pressure alongside everything else. Pressure kept dropping off at higher revs but not consistantly. I thought the pump was suspect so we pulled it off the rollers. However as soon as John Sleath saw the fuel filter he said "I bet that's it". Drove car home, it was leaning out and misbehaving. Changed filter and tried it, it didn't lean out then. Changed the pump more as a precaution really.
I reckon they are good for up to about 130-140bhp. The filter area just isn't big enough.

To add, yes Gary after pump before fuel rail. 205 is in tank pump with a strainer built into the pump cartridge inside the tank.

Same as mine now then.

I'll give it a go without. Cheers.

In the 13's at last!.. Just

Dont forget, it's a hell of a lot easier to pump through the filter as the pump is designed to pump, than for gravity to feed fuel to the pump.

EFI pumps do not suck well, and do not like any restriction at all prior to the pump.

That would make me wary of putting any small filter or filter with small fittings prior to the pump.

And after recent experiences with the Torques 30 micron filters.....I honestly dont believe they filter for shit.

For a pre-filter, I'd be looking towards Earls/Holley filters or Aeromotive etc.

And not the shitty little Earls one designed for a dead end carb application as opposed to a full flow/return that you will be using with a turbo mini.

The Bosch one would be ideal after the pump though.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Bugger haha. I better buy something else.

Thanks for the advice guys. maybe I should just rely on the inbuilt filter in my facet lift pump as a pre filter

Team www.sheepspeed.com Racing

what about two filter in parallel twice the filter area ?

Just to be clear, are we talking about these filters:

https://www.merlinmotorsport.co.uk/p/sytec-...ils-inj-filt-f1

or these:

https://www.merlinmotorsport.co.uk/p/sytec-...filter-ff-inl-5

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I bow to superior knowledge on flow rates etc and the restriction they might pose to high power but I use one of those Bosch filters before the pump. I feel it is a good idea to protect the pump.
The only thing I notice is that if I do run out of fuel I need to bleed fuel through to the pump as it won,t prime, even although both pump and filter are below the fuel level. I only have around 140bhp so the possible restrictions won,t bother me.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

How about this one?

http://www.ebay.co.uk/itm/AEROMOTIVE-AN-6-...FcAAOxy2d9SZRfX

Only £150......

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Whats wrong with the throw away cans?

I'd personally use a strainer on the tank pickup and a freely available disposable filter from your choice of mass produced vehicle, fitted after the pump.

The strainer protects the pump from debris, and the filter protects the pressure regulator and injectors.

Sprock, that's what I used on the car above. A throwaway canister filter with s couple of male/male adaptor a from 14x1.5 to AN-6.

Edited by stevieturbo on 21st Oct, 2015.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Jim, you could just use 2 paper cheap as chips filters the ones you get on the metro and other old cars. Just like I use.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Think I've got oem filter off a focus, I think turbo Dave mentioned it was what he used so just went with the same or similar.