Previous Thread
Next Thread
Print Thread
.150 needle and seats sealing???? #1655462
08/05/14 09:42 PM
08/05/14 09:42 PM
Joined: Oct 2005
Posts: 312
illinois
D
dodgeram1998 Offline OP
enthusiast
dodgeram1998  Offline OP
enthusiast
D

Joined: Oct 2005
Posts: 312
illinois
Arggh e-85 switched gas carb
HP 950 carb
new needle and seats float bowl adjusted fuel pressure 5.5 psi and verified with two different gauges

the bowls creep on up to spill over fuel through the booster like after two minutes or so I am suspecting leaking needle and seats

I put my gas needles .120 back in and they hold pressure fine

what gives I do not know
anyone have problems with .150 float needles

Re: .150 needle and seats sealing???? [Re: dodgeram1998] #1655463
08/05/14 09:58 PM
08/05/14 09:58 PM
Joined: Feb 2006
Posts: 686
PA
A
ajcasini Offline
mopar
ajcasini  Offline
mopar
A

Joined: Feb 2006
Posts: 686
PA
I have always had problems with quick fuel and holley larger needle and seats. If you don't lap them they never seal. What I have done is switched to blp titanium n&s for all my builds. The .140 is perfect for e85 carbs. That is what I use on the majority of builds. I will go bigger when the demand is there for carbs over 1250 and up.

Re: .150 needle and seats sealing???? [Re: ajcasini] #1655464
08/05/14 10:09 PM
08/05/14 10:09 PM
Joined: Oct 2005
Posts: 312
illinois
D
dodgeram1998 Offline OP
enthusiast
dodgeram1998  Offline OP
enthusiast
D

Joined: Oct 2005
Posts: 312
illinois
Valve lapping compound ?
Or just dont waste the time and get the blp titanium eh ?

Thanks for the feedback
I am about to pull my hair out on a simple needle Change out . R&R and troubleshoot two hours later lol
which floats are rated also for the application?

Last edited by dodgeram1998; 08/05/14 10:14 PM.
Re: .150 needle and seats sealing???? [Re: ajcasini] #1655465
08/05/14 11:22 PM
08/05/14 11:22 PM
Joined: Jan 2003
Posts: 32,394
Q
Quicktree Offline
I Win
Quicktree  Offline
I Win
Q

Joined: Jan 2003
Posts: 32,394
Quote:

I have always had problems with quick fuel and holley larger needle and seats. If you don't lap them they never seal. What I have done is switched to blp titanium n&s for all my builds. The .140 is perfect for e85 carbs. That is what I use on the majority of builds. I will go bigger when the demand is there for carbs over 1250 and up.


I am having the same dang thing happening with my quickfuel 950, thats why I was thinking about letting you do my dominator at some point. can you explain lapping them in? are you talking about the needle and seat bore?

Re: .150 needle and seats sealing???? [Re: dodgeram1998] #1655466
08/05/14 11:24 PM
08/05/14 11:24 PM
Joined: Jan 2003
Posts: 32,394
Q
Quicktree Offline
I Win
Quicktree  Offline
I Win
Q

Joined: Jan 2003
Posts: 32,394
Quote:

Valve lapping compound ?
Or just dont waste the time and get the blp titanium eh ?

Thanks for the feedback
I am about to pull my hair out on a simple needle Change out . R&R and troubleshoot two hours later lol
which floats are rated also for the application?



I know the feeling I changed regulators,fuel pump,floats trying to find it

Re: .150 needle and seats sealing???? [Re: Quicktree] #1655467
08/05/14 11:30 PM
08/05/14 11:30 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
70AARcuda  Offline
master

Joined: Jan 2003
Posts: 9,826
las vegas
had float problems with our 950 QFT E85 carbs...had to change out brand new needle and seats for the Titanium needle and seat on one of the carbs to get the float level stop creeping..


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: .150 needle and seats sealing???? [Re: 70AARcuda] #1655468
08/05/14 11:35 PM
08/05/14 11:35 PM
Joined: Jan 2003
Posts: 32,394
Q
Quicktree Offline
I Win
Quicktree  Offline
I Win
Q

Joined: Jan 2003
Posts: 32,394
where do you get the BLP n&s?

Re: .150 needle and seats sealing???? [Re: dodgeram1998] #1655469
08/05/14 11:43 PM
08/05/14 11:43 PM
Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
mopar dave Offline
master
mopar dave  Offline
master

Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
i have simular problem on a dominator with BLP .160 ns. 7psi or more and they dont seal, but i should be fine with 6psi anyway.

Re: .150 needle and seats sealing???? [Re: Quicktree] #1655470
08/05/14 11:47 PM
08/05/14 11:47 PM
Joined: Feb 2006
Posts: 686
PA
A
ajcasini Offline
mopar
ajcasini  Offline
mopar
A

Joined: Feb 2006
Posts: 686
PA
Blp needle and seat

To lap them in I use a little brake clean grap the end of n&s with a small needle nose pilar and lap into the seat. Doesn't need much maybe 2 min on each and you will seat the needle.

Re: .150 needle and seats sealing???? [Re: mopar dave] #1655471
08/05/14 11:49 PM
08/05/14 11:49 PM
Joined: Feb 2006
Posts: 686
PA
A
ajcasini Offline
mopar
ajcasini  Offline
mopar
A

Joined: Feb 2006
Posts: 686
PA
Quote:

i have simular problem on a dominator with BLP .160 ns. 7psi or more and they dont seal, but i should be fine with 6psi anyway.




With the 160 I wouldn't think you would need much over 5.5psi. Unless fuel demand are extremely high on your combo. With the 140 I normally run 6-6.5lbs at the most.

Re: .150 needle and seats sealing???? [Re: ajcasini] #1655472
08/05/14 11:54 PM
08/05/14 11:54 PM
Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
mopar dave Offline
master
mopar dave  Offline
master

Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
ok, thanks. thats good to know.

Re: .150 needle and seats sealing???? [Re: ajcasini] #1655473
08/06/14 01:12 AM
08/06/14 01:12 AM
Joined: Oct 2005
Posts: 312
illinois
D
dodgeram1998 Offline OP
enthusiast
dodgeram1998  Offline OP
enthusiast
D

Joined: Oct 2005
Posts: 312
illinois

Re: .150 needle and seats sealing???? [Re: ajcasini] #1655474
08/06/14 02:10 PM
08/06/14 02:10 PM
Joined: Oct 2005
Posts: 312
illinois
D
dodgeram1998 Offline OP
enthusiast
dodgeram1998  Offline OP
enthusiast
D

Joined: Oct 2005
Posts: 312
illinois
Any other carb companies out there that have a great seal?
BLP has to be shipped out of florida, and I was hoping to source something quicker out of some closer local warehousing?







Powered by UBB.threads™ PHP Forum Software 7.7.1