RE: Is this the correct Fuel Pump for a 914-6, F.I. pump on Ebay says its stock for -6 |
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RE: Is this the correct Fuel Pump for a 914-6, F.I. pump on Ebay says its stock for -6 |
Dominic |
Jul 2 2005, 07:21 AM
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#1
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Dominic Group: Members Posts: 991 Joined: 14-January 03 From: Vacaville, CA Member No.: 149 Region Association: Northern California |
After looking at this auction, I noticed that the pump he is selling is the stock Fuel pump on all VW type 3, type 4 and 914-4's with F.I. He claims it will work on carbed 911's and 914-6 ?
I looked it up in the book of knowledge (Factory Parts Catalog) and it gives me two seperate part numbers: For the 914-6.... 911.608.107.00 translates to Bosch part# 61309 (Bosch# 0 580 960 009) For the 914-4..... 311.906.091 D translates to Bosch part # 61305 (Bosch # 0 580 463 005) I didn't think that the carbs could work with this type of fuel pressure unless it's regulated to 5 psi ???? (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) http://cgi.ebay.com/ebaymotors/ws/eBayISAP...7983259654&rd=1 |
SLITS |
Jul 2 2005, 07:54 AM
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#2
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
That is a stock DJet pump. If you used it with carbs without the Mallory? "return to tank" fuel pressure regulator (or even the stock one set to 5 psig), you would:
1. Turn your engine into a liquid gas pumping machine by overriding the float valves. 2. Prolly collapse the floats themselves from overpressurization 3. Have a hell of a fire if it started. (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) |
ClayPerrine |
Jul 2 2005, 08:04 AM
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#3
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Life's been good to me so far..... Group: Admin Posts: 15,430 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
If you use that pump with carbs, let me know where you will be......
I want to bring marshmellows to roast!!! (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/lol2.gif) |
jonwatts |
Jul 2 2005, 09:44 AM
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#4
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no rules, just wrong Group: Benefactors Posts: 2,321 Joined: 13-January 03 From: San Jose, CA Member No.: 141 |
BTDT Clay?
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bd1308 |
Jul 2 2005, 09:49 AM
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#5
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
my new fuel pump clicks. it's really cool
click...click |
Eddie Williams |
Jul 2 2005, 09:53 AM
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#6
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Senior Member Group: Members Posts: 822 Joined: 30-December 02 From: Nederland, TX Member No.: 55 Region Association: None |
Which Mallory FP regulator? I'd like to keep the return to tank setup, but use an after market pump, whats "the" setup?
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SLITS |
Jul 2 2005, 01:46 PM
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#7
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
http://www.jegs.com/cgi-bin/ncommerce3/Pro...471&prmenbr=361
or any Speed Shop (IMG:http://www.jegs.com/photos/6504300.gif) This is the style, but it looks like the prices went sky high (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) ...I didn't pay over $40 for the one I got. There are others who make the "return style" regulator. |
Porsche Rescue |
Jul 2 2005, 02:24 PM
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#8
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
This story will likely create some debate, but...........
A car I once owned came to me with Webers and the stock 4 cyl FI pump. The pressure was regulated by a hose clamp on the line from the stock Djet pump, then the fuel entered a block with a guage and 2 lines out to each carb. If you look closely you can see the clamp in the picture below. It was a system provided by PMO (they do know carbs!). I couldn't believe it was safe after reading posts like those above (roasting marshmellows, etc) so I called PMO. I was told not to worry. The 30+ lbs of pressure in the FI fuel ring is created by the stock fuel pressure regulator. Remove the regulator and it is like removing your thumb from the end of a garden hose, pressure goes down. I used the system for the three years I owned the car with no problem. In fact I never loosened or tightened the hose clamp "regulator" because the gauge showed about 3 lbs and the carbs performed well. Attached image(s) |
Porsche Rescue |
Jul 2 2005, 02:26 PM
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#9
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Might see it better in this pic
Attached image(s) |
ClayPerrine |
Jul 2 2005, 02:26 PM
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#10
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Life's been good to me so far..... Group: Admin Posts: 15,430 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Nope. Had the correct pump on Betty's car when the plastic line split at the firewall. It sprayed gasoline over hot engine and heat exchangers at freeway speed. Worst thing you can do is watch your 914 burn. BTDT! Not gonna happen again. I will NEVER own a 914 that I have not replaced the plastic lines with steel. This is my opinion, but it's based on experience.... You are running on borrowed time if you leave the plastic fuel lines in your 914. You will have an engine fire. |
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SLITS |
Jul 2 2005, 03:51 PM
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#11
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
The hose clamp "acted" as a regulator, as most of the flow had to be returned to the tank.
In theory, you could use the stock DJet one. The fuel rail would be the lines to the carbs, but each carb would have a flow thru fitting. The line would run from the pump to the 1st carb, then to the second carb and finally to the pressure regulator. The line from the pressure regulator would "t" with the pump return port, just like the DJet. Hopefully it has sufficient adjustment to set your 3 - 5 psi. In the case stated in the ad, if you ran the output of the pump to a "t" and then to each carb, the carb float bowls would see the full 30+ psi the pump is capable of. |
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