Fuel system on thirsty lump

topcatcustom · Post by **topcatcustom** » Wed May 06, 2009 1:11 pm

It will be goodrich/earls etc stainless steel braided rubber fuel hose yup, I might cut back the braid so the hose clips only bite the rubber not the steel too- should bite a bit better! I might put a compression joint on the end that comes up in the engine bay so I can put a ball valve on it as a fuel cut off incase anything goes wrong!

Ian Anderson · Post by **Ian Anderson** » Wed May 06, 2009 2:22 pm

I think I'd put a bead / flare on the end of the Ali pipe and then force the rubber over it.

Ir do the drill holes arounf the edge and do 3 small pop rivets into the tube then force the rubber over the rivets etc - same as a bead

I'd also clamp the braid or it will fray and become seriously messy and the ends are bloody sharp!

Ian

topcatcustom · Post by **topcatcustom** » Fri Jun 05, 2009 9:59 am

I have a die that threads the ally fuel pipe to take fittings the right size, am going to put a fuel tap on the end as insurance too, question is: What filters are best and where should they go? Want approx 9mm ID openings, then the system will be pretty free flowing.

Not going to put a swirl tank in yet as probably wont need it so plumbing will be simple, filter doesn't have to be pretty as going under the car with the pump to keep them low.

TC

topcatcustom · Post by **topcatcustom** » Mon Jun 22, 2009 2:29 pm

Should I have a simple re-usable mesh fuel filter before the pump, then a proper screw on type filter after the pump before the carb? If so what type of filter and housing would be the best to use? (If it makes any difference, if not I will just get a Land Rover one as they are fairly big)

ged · Post by **ged** » Mon Jun 22, 2009 10:07 pm

Hi tc,

If you want to tidy up the ends of braided fuel lines use electrical shrink sleeving. It is perfect for the job.

Ged

topcatcustom · Post by **topcatcustom** » Tue Nov 17, 2009 10:34 am

Still don't have a filter- do I need 1 or 2? A coarse befor ethe pump and a fine after, and would this type be ok http://cgi.ebay.co.uk/FORD-MUSTANG-5-0L ... 3a5134337d or am I better going with a re-usable one, I'm also using -8 pipe for the single fuel line which is probably bigger than any standard filter like the ebay one. Its more HVLP than high pressure...[/url]

bones · Post by **bones** » Tue Nov 17, 2009 11:25 am

i would of thought it was to small,and as im a idiot what size is -8, in inches please

rich

topcatcustom · Post by **topcatcustom** » Tue Nov 17, 2009 2:04 pm

-8, 8AN, 1/2"? I think filter king do a V8 filter- anyone know the sizes?

Ian Anderson · Post by **Ian Anderson** » Tue Nov 17, 2009 2:33 pm

Correct

Dash numbers are in 1/16 inchs

So -8 = 8/16 = 1/2 inch Metric approx 12mm
and -4 = 4/16 = 1/4inch Metric approx 6mm
and -6 = 6/16 = 3/8 inch Metric approx 9mm

Etc.

Ian

bigaldart · Post by **bigaldart** » Tue Nov 17, 2009 6:00 pm

Hi, Just read all this thread, considering the blower, I wouldn't trust a Red Holley to supply enough fuel even without nitrous. Two for the motor alone would be better, then an additional pump for the nitrous. Sorry to bear bad news but blowers need a lot of fuel and hence a lot of fuel pump. Your system will be ok for road use but only just. Any track time at all it will empty the float bowls and go lean. Probably won't do any damage but will nose over on power output. Personal preference would be two Holley blue pumps, two regulators, #8 of half inch line all through. Separate red pump for nitrous, the Holley red has a regulator built in. On the strip you will certainly need plenty of pump. At 5-6 psi the Holley blue actually flows about 70 gph, then allow for acceleration and it will drop some more overcoming the G forces. Holley's rating is based on no restriction at all, ie open line into a box. Maybe the Holley 250 gph race type pump with a smaller pump for nitrous system.

Alan

topcatcustom · Post by **topcatcustom** » Tue Nov 17, 2009 9:23 pm

Thanks for the input Alan, with the gauge I have on the regulator (visible behind carb) will I be able to tell if the pump isn't keeping up or will it often show zero whilst flowing fuel without it being under pressure (I presume only shows pressure when float chambers are full?)

So a different approach with filter regards- what does anyone else use? I know there are some fast (thus juicy) cars on here and they must have some filters!!!!

bigaldart · Post by **bigaldart** » Tue Nov 17, 2009 10:31 pm

Gauge is always showing pressure due to needle and seat and regulator restrictions, You will notice it in the way it drives, if it stops pulling so hard have a look.

Alan

Post by **Coops** » Tue Nov 17, 2009 10:58 pm

i use a cossy filter on mine,

topcatcustom · Post by **topcatcustom** » Wed Nov 18, 2009 10:17 am

Does it make any difference between injection filters (like your Coops) and low pressure ones?

bones · Post by **bones** » Wed Nov 18, 2009 11:43 am

and find out how noisey the pumps are as some are a real pain, like the carter one i had. As for filters , i use a see through thing with a filter that can be changed and 3/8" inlet. A couple of peeps use injection pumps as they can run more psi.

rich Does this help (probley not)