Fuel lines help
Turbo Mini Forums

Running the fuel lines for the turbo install soon, just a few questions.

After i've searched, I've found that 8mm ID is best. Is this for return aswell?

Is it worth running them internally? My car is a road car, with back seat and carpet etc


How much pipe will I need to order? I have no idea how long it would need to be.


Where should I mount the pump, in the boot or on the rear subframe?

Is copper the best material to use? anyone got any specific links or suggestions where to get it?

Cheers
Ben

Turbo parts collector at the moment, almost ready.

the return either needs to be 8mm but you could use 6mm for the feed.

however most people just use 8mm for both.

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Don't get your pipe frim B&Q, you will be forced to buy masses more than you need at the usual inflated B&Q prices.

Go to a local plumbing specialist, you will get the length you need at a much more reasonable price.

From memory, B&Q where around £25-£30 for a roll of about 5 or 6m, my local plumbing place was around £2 a meter.

EDIT: I tell a lie - £33 for 10m

http://www.diy.com/diy/jsp/bq/nav.jsp?acti...h&isSearch=true

ebay is much cheaper, even with postage

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...em=120572038703

Edited by apbellamy on 20th Jan, 2011.

Good advice andy. I actually had a load left over from another job when I did, so no cost really.

Edited by wil_h on 20th Jan, 2011.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Is 8mm the intern diameter?

Regards maikel

Yes, the links above are to 10mm o.d. with 1mm wall.

I have a feeling that I used 8mm OD? I'll have to check.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

So what size is the original fuel line? and is it possible to re-use and just get some new pipe for the return?

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

That's geinuis Stevie. I'd much prefer plastic under the car than copper.

Original fuel line is 6mm OD, will be fine too. But it's a bit of a bugger to go from 6mm to 10mm on the regulator.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

runs of to look at nylon tube

Would something like this be sutiable?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...em=290327141438

Cheers guys, big help. Apart from the cost, what other advantages are there too using the nylon lines?


What have people used as outlets/inlets for the tank?

http://cgi.ebay.co.uk/STEEL-PRECISION-TUBE...=item5adcacadb0


Do you just get a small length of something like that and weld it in?

Does the return have to be near the top?





I'll stop asking questions soon.

Turbo parts collector at the moment, almost ready.

Schrödinger's cat - so which one am I ???

Interesting Rod.

On the Sprint I only bent it (copper) at the front bulkhead. to get it up to the engine bay. at the rear I ended it at the end of the floor and ran rubber hose to pump/return etc.

I don't see why you couldn't do the same at the front. Or possibly put a rubber hose in for the bend?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

or use nylon type connectors for the bends

Yes to both of you....

It really depends on how much you want the run to be in one piece and how many additional joins, bends etc. you will accept.

For the nylon, forget one piece, it's a no starter.

For copper you need it in the fully annealled state to do tight bends, not after some eBay muppet has bent it to fit in an A4 envelope.

In both nylon or copper you can use right angled fittings, rubber tube etc., with copper you can even solder the joins.

But I guess I shouldn't jump in when my reasons are slightly different - I need a safe pressure of 3 or 6 bar for fuel injection, so the minimum number of joins/fittings/rubber tube etc. are required in my particular case.

Schrödinger's cat - so which one am I ???

Whilst I'm not sure I'd recommend the push fittings for petrol....in some respects I also cant see why not.

Nearly all the methanol injection kits use this hose and fittings, and generally they are fine. I use them on my own methanol setup. It isnt pumping all the time though, which maybe adds a little more risk
But it would be something I'd periodically check, as doubtful the rubber seals are intended for such liquids. ( all pneumatic stuff )
But I have also seem people use them with petrol too and they havent had any problems.

Even if the fuel did affect them after a year or two, the fittings are like £1-2 each, so wont break the bank to replace now and again

Very very easy to use and anywhere that does air tools etc will stock them
Just push together and they are rated to around 150psi. Simple push and they come apart again. Very easy to step up/down to any size too.

I use that style of hose and fitting for MAP sensor, BOV line etc now.


Or for lower pressure setups you can simply push a rubber hose over it and hose clamp as normal. ( proper clamp, not a crappy worm drive that clamps oval )

Edited by stevieturbo on 20th Jan, 2011.

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

I may have a solution for people here, i work as an air conditioning engineer. We use (well the install team) this sort (fully annealed) of cooper tube every day. And we get a substansial discount at our wholesalers.

So i'll make a call tomorrow and get some costs.

Cheers guys, the nylon sounds good, but I think im going to go with copper. From a plumbing supply aswell as I know that it should be good quality and not collapse under bending it.Im going to try and do it with minimum joins, so a joint at the tank to the pump then at the pump with one long line to the reg. and then whatever to the carb, probably rubber or braided or something. Same on return, minimal joins, i think minimal points of faliure.

Interested in the prices almichie could get aswell.

Im done with my questions now, thanks, you've been a great help.

Cheers
Ben

Turbo parts collector at the moment, almost ready.

I've called one and it works out to
£2 a meter,it's on promotion at the moment normally £2.50 a meter. Let me know. This will run to about 50 bar pressure!