Bosch fuel pump ??(read please)
02-15-04, 02:28 PM
#1
Bosch fuel pump ??(read please)
Hey guys I need some advise as to how to wrought a bosch pump correctly.
It looks to me like the best way to do it is to use a banjo fitting like the one on the stock secondary and run it through the return line, and use the feed/pickup tube as the return.
I will attach a few pics and the stock configuration from a 911 turbo w/banjo fitting.
I know some people just drill out the top nylon piece and use fuel tubing and clamp it on, but I thought I could try it a little differently and retain the check valve.
Why does the top nylon pieces have a small hole in it? Is it to relieve some of the pressure when the pump is running but no fuel is being used?
Thanks for any insight or advise.
Sorry about the pic quality
It looks to me like the best way to do it is to use a banjo fitting like the one on the stock secondary and run it through the return line, and use the feed/pickup tube as the return.
I will attach a few pics and the stock configuration from a 911 turbo w/banjo fitting.
I know some people just drill out the top nylon piece and use fuel tubing and clamp it on, but I thought I could try it a little differently and retain the check valve.
Why does the top nylon pieces have a small hole in it? Is it to relieve some of the pressure when the pump is running but no fuel is being used?
Thanks for any insight or advise.
Sorry about the pic quality
02-15-04, 03:28 PM
#3
That banjo fitting is off the stock secondary fuel rail and is nearly the perfect size to go over the stock bosch outlet. I think the stock bolt was probly a m12x1, and the bosch outlet is a m12x1.5 so I was thinking if I cut the other end of the 90* line, and hose clamp it to the return wich is in the general area of were the 90* banjo fitting ends up it should work ok.
How did you guys that have upgraded to the bosch pumps do it?
How did you guys that have upgraded to the bosch pumps do it?
02-16-04, 09:08 PM
#4
Lives on the Forum
Why even bother with the banjo fitting?
The banjo fitting was designed as a compromise connection for very tight fitting spaces.
I would throw that banjo fitting away and find a straight connector for better fuel flow.
-Ted
The banjo fitting was designed as a compromise connection for very tight fitting spaces.
I would throw that banjo fitting away and find a straight connector for better fuel flow.
-Ted
02-17-04, 09:52 AM
#5
What is your opinion on the check valve is it needed?
It just seemed odd to me that it would be there without serving a purpose, but the only issue that I could find was emissions related.
Is there a problem with a brief/ temporary lean situation right at startup if the check valve is not used?
Because of the system not retaining pressure? can/could this happen, and is it an issue at all?
It is a slightly odd fitting on the top of the pump and I don’t think that anyone makes any fittings that will just screw right in, in either a barbed or AN fitting. So I will have to make one if I go that wrought,
It just seemed odd to me that it would be there without serving a purpose, but the only issue that I could find was emissions related.
Is there a problem with a brief/ temporary lean situation right at startup if the check valve is not used?
Because of the system not retaining pressure? can/could this happen, and is it an issue at all?
It is a slightly odd fitting on the top of the pump and I don’t think that anyone makes any fittings that will just screw right in, in either a barbed or AN fitting. So I will have to make one if I go that wrought,
02-17-04, 10:19 AM
#6
Senior Member
Join Date: Apr 2001
Location: Seattle, WA
Posts: 528
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by rotarypower101
What is your opinion on the check valve is it needed?
It just seemed odd to me that it would be there without serving a purpose, but the only issue that I could find was emissions related.
Is there a problem with a brief/ temporary lean situation right at startup if the check valve is not used?
Because of the system not retaining pressure? can/could this happen, and is it an issue at all?
It is a slightly odd fitting on the top of the pump and I don’t think that anyone makes any fittings that will just screw right in, in either a barbed or AN fitting. So I will have to make one if I go that wrought,
What is your opinion on the check valve is it needed?
It just seemed odd to me that it would be there without serving a purpose, but the only issue that I could find was emissions related.
Is there a problem with a brief/ temporary lean situation right at startup if the check valve is not used?
Because of the system not retaining pressure? can/could this happen, and is it an issue at all?
It is a slightly odd fitting on the top of the pump and I don’t think that anyone makes any fittings that will just screw right in, in either a barbed or AN fitting. So I will have to make one if I go that wrought,
If you chuck the valve, you car will start but may require a few more cranks than usual. A good fix is to install a one way check valve between the pump and the filter (i.e., external). If you do this, don't buy the Earl's check valves, they flow poorly and they don't hold pressure. I just did this and have since switched to an Aeromotive valve. I highly recommend this piece.
Here's some drivel on my fuel system/pump setup:
http://www.mantissaracing.com/Mantis...uel_system.htm
Have fun,
Gene
02-17-04, 05:27 PM
#7
Senior Member
Join Date: Mar 2003
Location: London, UK
Posts: 390
Likes: 0
Received 0 Likes
on
0 Posts
Gene, great write up. This has just given me loads of information of doing this upgrade. And I have just worked out I only have about half the parts needed.
Thanks
Dan
Thanks
Dan
Trending Topics
02-17-04, 08:00 PM
#8
Corn-to-Noise Converter
iTrader: (6)
Join Date: Mar 2002
Location: The Elysian Fields (Texas)
Posts: 1,527
Received 386 Likes
on
154 Posts
EXCELLENT site, Gene! It's always such a pleasure to read one of yours or Crispy's write-up! Sure is nice for the rest of the RX-7 community to have this knowledge so cleanly archived!
02-17-04, 08:02 PM
#9
Corn-to-Noise Converter
iTrader: (6)
Join Date: Mar 2002
Location: The Elysian Fields (Texas)
Posts: 1,527
Received 386 Likes
on
154 Posts
EXCELLENT site, Gene! It's always such a pleasure to read one of yours or Crispy's write-up! Sure is nice for the rest of the RX-7 community to have this knowledge so cleanly archived!
02-17-04, 08:08 PM
#10
Corn-to-Noise Converter
iTrader: (6)
Join Date: Mar 2002
Location: The Elysian Fields (Texas)
Posts: 1,527
Received 386 Likes
on
154 Posts
EXCELLENT site, Gene! It's always such a pleasure to read one of yours or Crispy's write-up! Sure is nice for the rest of the RX-7 community to have this knowledge so cleanly archived!
02-18-04, 09:34 AM
#11
Senior Member
Join Date: Apr 2001
Location: Seattle, WA
Posts: 528
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by carlos@the-rotary.net
EXCELLENT site, Gene! It's always such a pleasure to read one of yours or Crispy's write-up! Sure is nice for the rest of the RX-7 community to have this knowledge so cleanly archived!
EXCELLENT site, Gene! It's always such a pleasure to read one of yours or Crispy's write-up! Sure is nice for the rest of the RX-7 community to have this knowledge so cleanly archived!
To everyone reading this thread, Carlos was instumental in helping me with the initial plumbing. Thanks again.
Gene
02-18-04, 09:38 AM
#12
Senior Member
Join Date: Apr 2001
Location: Seattle, WA
Posts: 528
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Fish
Gene, great write up. This has just given me loads of information of doing this upgrade. And I have just worked out I only have about half the parts needed.
Thanks
Dan
Gene, great write up. This has just given me loads of information of doing this upgrade. And I have just worked out I only have about half the parts needed.
Thanks
Dan
I'll update the site tonight. I can e-mail you the current stuff as well in spreadsheet form.
Gene
02-18-04, 03:57 PM
#13
Senior Member
Join Date: Mar 2003
Location: London, UK
Posts: 390
Likes: 0
Received 0 Likes
on
0 Posts
02-18-04, 09:20 PM
#14
Corn-to-Noise Converter
iTrader: (6)
Join Date: Mar 2002
Location: The Elysian Fields (Texas)
Posts: 1,527
Received 386 Likes
on
154 Posts
Though I honestly wasn't fishing for it, thanks for the reference, Gene.
As for the (knuckleheaded) triple post... Oops!
Mod, please delete my redundant posts above.
As for the (knuckleheaded) triple post... Oops!
Mod, please delete my redundant posts above.
Last edited by carlos@the-rotary.net; 02-18-04 at 09:26 PM.
02-19-04, 11:21 AM
#16
Senior Member
Join Date: Apr 2001
Location: Seattle, WA
Posts: 528
Likes: 0
Received 0 Likes
on
0 Posts
That's a great idea. Heck, you could even use the AL block as a Y or "T" fitting (by adding one more port) for the return lines, if desired. You might want to go into production with those 
Gene
Gene
09-26-05, 11:35 PM
#17
As per Gene’s great idea instead of my 2 separate blocks. (Someone deleted my entire pic thread; I guess it was getting as big as amours.)
And this is what I ended up doing for my fuel pump, it is just a standard bolt I milled out and turned a barbed nipple on. I also used a std nut as a jam nut to secure it to the pump housing. The fuel sock is a stock ford part that I can get the part number for if so requested. The isolation material is an old piece of fuel tubing out of a seadoo jetski and I also bolted the hose clamps to the pump housing to avoid any slippage of the pump itself.
Works and sounds great, it is actually quieter than the stock pump from what I can tell and absolutely no vibration at all.
Because I did away with the stock check valve I did end up ordering both the earls and the aeromotive check valve, and continue using the aeromotive as gene had also recommended for its finish and fit into my system.
instead of my 2 separate blocks. (Someone deleted my entire pic thread; I guess it was getting as big as amours.)And this is what I ended up doing for my fuel pump, it is just a standard bolt I milled out and turned a barbed nipple on. I also used a std nut as a jam nut to secure it to the pump housing. The fuel sock is a stock ford part that I can get the part number for if so requested. The isolation material is an old piece of fuel tubing out of a seadoo jetski and I also bolted the hose clamps to the pump housing to avoid any slippage of the pump itself.
Works and sounds great, it is actually quieter than the stock pump from what I can tell and absolutely no vibration at all.
Because I did away with the stock check valve I did end up ordering both the earls and the aeromotive check valve, and continue using the aeromotive as gene had also recommended for its finish and fit into my system.
10-09-05, 10:14 PM
#19
Senior Member
Originally Posted by gfelber
Here's some drivel on my fuel system/pump setup:
http://www.mantissaracing.com/Mantis...uel_system.htm
Have fun,
Gene
http://www.mantissaracing.com/Mantis...uel_system.htm
Have fun,
Gene
10-10-05, 03:47 PM
#22
boxed in and drawn out
Join Date: Dec 2003
Location: Bayouself
Posts: 555
Likes: 0
Received 0 Likes
on
0 Posts
Re: **** site?
--------------------------------------------------------------------------------
Yeah, some ******* took over my mantissaracing site a year ago and decided to make a **** site out of it. I've moved my stuff to hear last year: http://www.mantissaconsulting.com/e...ing/RX7/RX7.htm
Gene
Quote:
Originally Posted by APEXL8T
whats with the **** popup everytime i try to get to the mantissarace site?
Then I get no pic its static IP?
--------------------------------------------------------------------------------
Yeah, some ******* took over my mantissaracing site a year ago and decided to make a **** site out of it. I've moved my stuff to hear last year: http://www.mantissaconsulting.com/e...ing/RX7/RX7.htm
Gene
Quote:
Originally Posted by APEXL8T
whats with the **** popup everytime i try to get to the mantissarace site?
Then I get no pic its static IP?
10-14-05, 03:52 AM
#23
Gene do you plan on keeping your site up indefinitely?
It is a really great source of info for people that have even been around the block IMO.
I am glad you got what you asked for your car so quickly, IMO it was worth more and I think you could of held out for a while and got a lot more from someone that did his homework on the vehical.
Good luck in the future and thanks for all the help!
Hope to see you around.
It is a really great source of info for people that have even been around the block IMO.
I am glad you got what you asked for your car so quickly, IMO it was worth more and I think you could of held out for a while and got a lot more from someone that did his homework on the vehical.
Good luck in the future and thanks for all the help!
Hope to see you around.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Skeese
Adaptronic Engine Mgmt - AUS
65
03-28-17 03:30 PM
befarrer
Microtech
3
08-22-15 05:52 PM
