nasaforums.com

Official Forums of the National Auto Sport Association
It is currently Wed Jul 18, 2018 10:00 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3, 4  Next
Author Message
 Post subject: Re: Secondary Fuel Pump
PostPosted: Tue Jan 21, 2014 3:23 pm 
Offline
Forum Time Trialer
Forum Time Trialer
User avatar

Joined: Tue Mar 29, 2011 5:28 pm
Posts: 157
Location: Columbus, OH
Will another OEM pump fit into the left side tank? it looks to be the same side hole and everything? Are you guys doing something like that and tying them together?

_________________
#315 TT3 Nissan 350Z


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Tue Jan 21, 2014 3:27 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jun 02, 2011 5:43 am
Posts: 119
Location: Raleigh, NC
Fixxxercask wrote:
Will another OEM pump fit into the left side tank? it looks to be the same side hole and everything? Are you guys doing something like that and tying them together?


The Plan is to do just that. Add another OEM pump, take that line and dump into the bucket on the main pump.
Add some relay's and a switch to power secondary but leave the fuel level sender wired, etc....
Keep the system sealed, so, be certain to gasket the punch throughs, etc...

We didnt want to spill the beans, 'till we knew it worked -- but, you had to ask. :)


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Tue Feb 04, 2014 3:41 pm 
Offline
Forum Time Trialer
Forum Time Trialer
User avatar

Joined: Tue Mar 29, 2011 5:28 pm
Posts: 157
Location: Columbus, OH
Really interested in your guys results. I was thinking more about this today. What about fuel pressure? Would running two pumps force the need to have a regulator?

_________________
#315 TT3 Nissan 350Z


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Fri Feb 14, 2014 7:51 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Wed Aug 29, 2007 2:29 pm
Posts: 122
Location: Austin, TX
Any updates on this solution?


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Fri Feb 14, 2014 12:15 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Fri Apr 06, 2007 1:38 pm
Posts: 109
sfarrah wrote:
Any updates on this solution?

Not today! Everybody is headed to Barber!

_________________
Race Director - NASA Texas
Spec Z National Series Director


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Mon Feb 17, 2014 9:43 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Wed Aug 29, 2007 2:29 pm
Posts: 122
Location: Austin, TX
So was anyone testing this fix out at Barber? Road Atlanta would be a great test with all the right handers!


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Tue Feb 18, 2014 5:35 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Wed Mar 28, 2012 3:16 am
Posts: 67
It's hard to get starvation at barber but my car seems particularly susceptible.

I got starvation at one point on Sunday's race, turned on my transfer pump and no problems after that. So positive outcome though not conclusive.

Will be testing at VIR in a few weeks and T17 is notorious. I'll try with a low fuel load to really stress the condition.


Last edited by FastNotFurious on Thu Feb 20, 2014 5:45 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Wed Feb 19, 2014 3:52 pm 
Offline
Forum Time Trialer
Forum Time Trialer
User avatar

Joined: Tue Mar 29, 2011 5:28 pm
Posts: 157
Location: Columbus, OH
Would you care to share the details of how you went about installing the transfer pump? :)

Did you run lines from one side to the other inside the tank? Did you splice the wiring with the other pump?

_________________
#315 TT3 Nissan 350Z


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Thu Feb 20, 2014 5:58 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Wed Mar 28, 2012 3:16 am
Posts: 67
Fixxxercask wrote:
Would you care to share the details of how you went about installing the transfer pump? :)

Did you run lines from one side to the other inside the tank? Did you splice the wiring with the other pump?


So, basically, took an HR pump, drilled a hole through the top (near the electrical connector) and put an AN-6 bulkhead fitting through it (be careful on hole location so fitting nuts will clear - have to dremel the underside of the pump top to make a good flat underside). Then ran a short tube from the AN fitting underside right into the pump "bucket" - this is the output from the transfer pump - just dumps fuel right into the pickup bucket of the main pump. Remove the stock pump from passenger side and add this modified HR pump.

Then, took the stock pump and placed it in drivers side (replacing existing float level sensor). Connected the pump's float level sensor leads to the existing leads (at this point there is basically no difference from stock - same connections all around - car is happy).

Added a quick connect and braided steel line (required by CCR for in-cockpit combustible fluid lines) from output of driver's side pump to AN fitting in top of modified pump on passenger side.

Then hooked a toggle switch up to a new power feed from fuse box to the pump power leads on driver's side. Now I can turn on the transfer pump whenever I want and only when need it, otherwise the system runs just like stock.

Ideally would have liked to run transfer line between chassis & tank but couldn't snake a passage and didn't have time to drop the tank.... I'll see if I can grab some pics a little later....

BTW - if you haven't driven Barber - VERY fun... and different. :mrgreen:


Top
 Profile  
 
 Post subject: Re: Secondary Fuel Pump
PostPosted: Thu Feb 20, 2014 9:37 am 
Offline
Postmeister
Postmeister
User avatar

Joined: Fri Oct 06, 2006 6:36 pm
Posts: 1303
Location: Atlanta, GA
PIXS

_________________
John Evans
john.evans@partsatlanta.com
PartsAtlanta.com
SE Spec Z Series Director


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3, 4  Next

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group