 fuel pump, switching to carbs finally |
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| nycchef |
 Aug 28 2008, 03:56 PM
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#1
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mechanical moron  Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None  |
finally switching my tired old 1.7 with FI, to a 2.0 with dual weber 40's . what is the best fuel pump to install. my old one is up front so i assume the new guy will go there.also what should i do with the old return line (is the old bolt and clamp method safe?) and where should the filter go? thanks as always in advance (IMG:style_emoticons/default/biggrin.gif)
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| rhodyguy |
Aug 29 2008, 09:19 AM
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,076 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
lower capacity pump from cbperformance. appropriate ss tunnel line from chris folley. plug return line at the tank. replace all soft lines. mount pump firewall beneath front engine shelve. install filter prior to pump. make small harness to adapt pump power to stock fp harness. andy's jumper trick @ engine relay board to power pump via the relay and fuse provided.
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| i love porsche |
Aug 29 2008, 09:25 AM
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Senior Member Group: Members Posts: 1,547 Joined: 6-May 04 From: Nutley, NJ Member No.: 2,030 Region Association: North East States |
richie!
good to hear from you...no advice here, but let me know when you need some help on your car |
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| rmital |
Aug 29 2008, 09:27 AM
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#4
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Northeast optimist Group: Members Posts: 1,947 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
QUOTE(i love porsche @ Aug 29 2008, 11:25 AM)  richie! but let me know when you need some help on your car ...probably in the next week or two...the car will be at MovieTime and we'll be doing an engine swap. Hopefully during that time you could perform some of your welding magic on his longs.... (IMG:style_emoticons/default/welder.gif) |
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| i love porsche |
Aug 29 2008, 09:31 AM
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#5
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Senior Member Group: Members Posts: 1,547 Joined: 6-May 04 From: Nutley, NJ Member No.: 2,030 Region Association: North East States |
let me know when, and ill do my best =]
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| r_towle |
Aug 29 2008, 09:40 AM
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#6
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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I would suggest that you get a high quality carb pump from holley or others (CBperformance) and an adjustable regulator to keep the pressure in the range of 2-3 psi.
I would prefer to mount my fuel pump under the passenger side engine shelf in the stock location because low pressure pumps dont like to pull fuel up hill. they can push uphill alot better. Put the regulator in the engine bay so you can adjust it easily along with a fuel pressure gauge inline. Its not required to close off the return line and some/many people actually use the return line. The idea is to allow the unspent fuel to return to the tank thus keeping a fresh supply of cooler fuel at the ready for the carbs... Cooler fuel means better combustion. Rich |
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| Spoke |
Aug 29 2008, 09:44 AM
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#7
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
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If your old FI pump is on the market, let me be the first in line for it. I need a non-leaking FI fuel pump. Already got 2 leaking ones.
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| nycchef |
Aug 29 2008, 09:52 AM
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#8
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mechanical moron Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None |
QUOTE(r_towle @ Aug 29 2008, 07:40 AM) I would suggest that you get a high quality carb pump from holley or others (CBperformance) and an adjustable regulator to keep the pressure in the range of 2-3 psi. I would prefer to mount my fuel pump under the passenger side engine shelf in the stock location because low pressure pumps dont like to pull fuel up hill. they can push uphill alot better. Put the regulator in the engine bay so you can adjust it easily along with a fuel pressure gauge inline. Its not required to close off the return line and some/many people actually use the return line. The idea is to allow the unspent fuel to return to the tank thus keeping a fresh supply of cooler fuel at the ready for the carbs... Cooler fuel means better combustion. Rich which pump do you recommend. cb performance has a 2-3 psi and a 5+ psi if i remember correctly. both are rotary pumps. also is there a diagram of how to connect the return line from the carbs.? rich you still want the tub? spokes i have 2 working fuel pumps. i will be getting rid of the entire 1.7 system including the engine if i don't screw up the 2.0 install. |
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| rhodyguy |
Aug 30 2008, 07:39 AM
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#9
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,076 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
2-3. while retaining the return line might be helpful, i've only experienced what i would consider a 'hot fuel' issue on a very limited basis and only when the car has sat in extremely warm weather. the duration was what i would consider brief at most. during the restart. keeping the fuel line isolated/away/off of the tin proved beneficial.
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| rhodyguy |
Aug 30 2008, 07:41 AM
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#10
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,076 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
2-3. while retaining the return line might be helpful, i've only experienced what i would consider a 'hot fuel' issue on a very limited basis and only when the car has sat in extremely warm weather. the duration was what i would consider brief at most. during the restart. keeping the fuel line isolated/away/off of the tin proved beneficial.
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| r_towle |
Aug 30 2008, 07:54 AM
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#11
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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2-3 PSI.
Carbs never need more than that. Any more Fuel pressure and you will see the carb start spitting fuel out... I think the last time I did carbs I went to AutoZone and bought whatever I found...by that statement I mean...I dont really care who makes it....its a simple electronic pump... To me, being able to find one on sunday is better than the name on the side of the pump... The regulator is a different story for me...high quality, easy to set, and leak free. Order that, get one from Summit or a local race shop. Get a really good one. Rich |
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| hot_shoe914 |
Aug 30 2008, 08:20 AM
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#12
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on ramp passer Group: Members Posts: 3,802 Joined: 20-November 07 From: Earle, Ar. Member No.: 8,354 Region Association: None |
QUOTE(r_towle @ Aug 30 2008, 08:54 AM) 2-3 PSI. Carbs never need more than that. Any more Fuel pressure and you will see the carb start spitting fuel out... I think the last time I did carbs I went to AutoZone and bought whatever I found...by that statement I mean...I dont really care who makes it....its a simple electronic pump... To me, being able to find one on sunday is better than the name on the side of the pump... The regulator is a different story for me...high quality, easy to set, and leak free. Order that, get one from Summit or a local race shop. Get a really good one. Rich Thanks for the great responses guys. I'm also about to install( or attempt to install) Weber 40's on a car today also. This info has been very helpful. |
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| nycchef |
Aug 30 2008, 09:36 AM
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#13
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mechanical moron Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None |
Thanks for the great responses guys. I'm also about to install( or attempt to install) Weber 40's on a car today also. This info has been very helpful.
[/quote] are you using s regulator? pay close attention to what you do. post pics, make diagrams i will be asking you a lot of ? real soon here is the first one... is the fuel regulator from the d-jet usable on carbs? i have 3 of them rich |
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| rmital |
Aug 30 2008, 11:36 AM
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#14
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Northeast optimist Group: Members Posts: 1,947 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
...forget about fuel regulators...what's on the menu tomorrow...? (IMG:style_emoticons/default/jsharp.gif)
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| r_towle |
Aug 30 2008, 12:00 PM
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#15
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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[quote name='nycchef' date='Aug 30 2008, 11:36 AM' post='1073298']
Thanks for the great responses guys. I'm also about to install( or attempt to install) Weber 40's on a car today also. This info has been very helpful. [/quote] here is the first one... is the fuel regulator from the d-jet usable on carbs? i have 3 of them rich [/quote] Nothing from the FI fuel pump nor regulator can be used on carbs. FI pump puts out 65 PSI. FI regulator drops is down to 28-32 and car go to 40. Carbs Fuel pump is 1.5-3 PSI. Carb regulator is 1.5-8 PSI normally. (in that range) the carbs regulator cannot handle 65 PSI input..it will leak right away and become a boat anchor in seconds. the FI regulator will not go down low enough for carbs and then you will shoot fuel out the carbs all over the motor... You need to buy two cheap items. An elec fuel pump, and a regulator. Rich |
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| nycchef |
Aug 30 2008, 02:08 PM
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#16
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mechanical moron Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None |
[
You need to buy two cheap items. An elec fuel pump, and a regulator. Rich [/quote] cb performance regulator is $81.00 pump is only $53.00 will look for a cheaper regulator. |
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| hot_shoe914 |
Aug 30 2008, 02:14 PM
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#17
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on ramp passer Group: Members Posts: 3,802 Joined: 20-November 07 From: Earle, Ar. Member No.: 8,354 Region Association: None |
[quote name='nycchef' date='Aug 30 2008, 03:08 PM' post='1073356']
[ You need to buy two cheap items. An elec fuel pump, and a regulator. Rich [/quote] cb performance regulator is $81.00 pump is only $53.00 will look for a cheaper regulator. [/quote] You can buy a fuel pump cheaper. I priced one today at a foreign car parts store for 35.00 |
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| nycchef |
Aug 30 2008, 02:21 PM
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#18
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mechanical moron Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None |
You can buy a fuel pump cheaper. I priced one today at a foreign car parts store for 35.00 [/quote] what brand of regulator should i buy. ? summit seems to only carry bigger ones min. 4 /12 to 9 psi |
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| nycchef |
Aug 30 2008, 02:24 PM
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#19
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mechanical moron Group: Members Posts: 952 Joined: 28-November 05 From: new york city n.y. Member No.: 5,202 Region Association: None |
 QUOTE(rmital @ Aug 30 2008, 09:36 AM) ...forget about fuel regulators...what's on the menu tomorrow...? (IMG:style_emoticons/default/jsharp.gif) jesus ray pulled pork sandwiches, baby back ribs, chicken , burgers, hot dogs,coleslaw, tomato salad, picked turnips, fresh corn the usual (IMG:style_emoticons/default/chowtime.gif) why are actually going to venture out of your neighborhood? now back to business. will this regulator work with a cbperformancse 3 1/2psi pump. i am also concerned about the 3/8" threaded female inlet and outlet attachments. like where do a get the male equivalent of the damned things http://store.summitracing.com/partdetail.a...mp;autoview=sku |
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| rmital |
Aug 30 2008, 09:21 PM
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#20
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Northeast optimist Group: Members Posts: 1,947 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
....see you for lunch...I'll let you enjoy your morning coffee alone.
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