CONFUSED: I Need fuel pump for 1970 911T with Carburetors

[Marken]

Hello all, I am in need of a fuel pump for my 1970 911T that has carburetors. It looks like I may need a p/n 90160810501 however it appears that the latest p/n may be 90160810504. All descriptions I see infer that part number 90160810504 is for a fuel injected car. I have also found a p/n 90160810501 but it also states for MFI cars. Does anyone know if 90160810504 would work on my car with carbs? Any help would be appreciated. Thanks!

[digitaldgp]

I had the fuel pump on my 1970 911T rebuilt by fuelinjectioncorp.com they did an outstanding job. And less then the cost of a new pump.

[john walker's workshop]

Pierburg rotary pumps are cheap and reliable. 3 to 3.5# pressure. Just right for carbs. 912fpmp is one number used for them.

[Marken]

Originally Posted by digitaldgp

I had the fuel pump on my 1970 911T rebuilt by fuelinjectioncorp.com they did an outstanding job. And less then the cost of a new pump.

Thank you! I will check with them.

[Marken]

Originally Posted by john walker's workshop

Pierburg rotary pumps are cheap and reliable. 3 to 3.5# pressure. Just right for carbs. 912fpmp is one number used for them.

Thanks!

[Marken]

The shop that works on my car says I need a fuel pump with three lines coming off of it. The one I found only seems to have one coming off. Is there a way to make it work?
Thanks so much! Kevin

[john walker's workshop]

Out of the tank to the pump, out of the pump to the carbs. That's it. A return line is not needed. An inline pressure regulator could be used after the pump, but these pumps generally only put out 3-3.5# pressure. A pressure check will tell you that. Have one on my '69 w/3.0 and webers, had one on my '72 w/3.2 and 46 pmos. No issues. I even mounted them in the engine area.

[Marken]

Thank you. I'll give it a shot.

[rw7810]

A facet pump from Pegasus Racing would also work great. Just order the one with the proper pressure and flow rate. Here’s a pic of the double pump setup I installed just this week. Two switches in dash control pumps. They can be activated individually. Kinda allot of frufru like the racers used back in the day, but it looks cool.

[Marken]

Originally Posted by rw7810

A facet pump from Pegasus Racing would also work great. Just order the one with the proper pressure and flow rate. Here’s a pic of the double pump setup I installed just this week. Two switches in dash control pumps. They can be activated individually. Kinda allot of frufru like the racers used back in the day, but it looks cool.

Thanks. I'll check those out as well.

[puggi]

I bought a '70T that had been sitting for years and the fuel pump was stuck. The original bosch pump is a roller vane design and is pretty easy to get going again. I just undid the four screws and opened the top of the pump and then cleaned out all the ethanol varnish junk from the rollers and vane assembly.

[Steam Driver]

About any pump that can be adjusted to 3.5 psi will be OK. I used a S-W 240A mounted first at the rear and then at the front (where it should have been all along) with no issues for years.

I’m not a big fan of the Bosch roller vane pumps. Back in the 914/914-6 days I had a lot of them within a few years time. Failure mode was the same for all; they began leaking fuel at the electrical connection; not a real good place for that!

[911pcars]

There are several aftermarket low pressure fuel pumps available. This is an Airtex E8016S, 4 psi pump. About $40.00 from many sources (Amazon, Ebay, HomeDepot, Summit Racing, etc.).



Installed in my 914-six with shut-off valve and filter (2016):


There's a caveat. Airtex (and Carter) were recently bought out by Trico and some recently boxed E8016S pumps are slightly different (smaller). Some discussion here:
New Smaller Airtex E8016S

Compare the filter in the above photo with the smaller Airtex (same part number). I have no QC data on the smaller fuel pumps. Check with your supplier.

FWIW, the factory replacement pump is 91160810703. About $800-$900.

Sherwood

[Hi_Fi_Guy]

I’ve neglected responding because it seemed the OP’s question has been answered. That said I have had good experiences with the CB Performance fuel pump on a number of carbureted cars.

https://www.cbperformance.com/product-p/3193.htm

[Trackrash]

FWIW, I have had a Facet solid state in my car since the last century. Still works great, no issues. I have heard the new pumps aren't the same? Anyone know?

https://www.pegasusautoracing.com/productdetails.asp?RecId=7550&msclkid=78164432e7061db1db571b1f1e3fe5e8&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping&utm_term=1100404266775&utm_content=Ad%20group%20%231

[Hi_Fi_Guy]

In my experience a rotary style pump is a better choice. I personally would not use a non rotary fuel pump with carbs except as an emergency repair. The old clicking facets don’t allow for fuel expansion when the car is shut off in summer temps and can lead to carb flooding and hard starting in hot weather. Not to mention washing the cylinders with overflowing fuel from heat expansion when parked. Maybe only an issue for the sunbelt states but one to be aware of.

[Trackrash]

Can you explain heat expansion?

[Hi_Fi_Guy]

After a drive a car gets parked while hot. Fuel expands or percolates due to heat and spills down the carbs and onto the intake valve or beyond washing the cylinder walls. Fuel can also percolate into the tops of the carbs creating a potential engine fire situation.

It may be rare outside of sunbelt states or track days but it does happen. Ethanol in fuel exacerbates the problem. According to some Porsche/VW/Corvair sites a rotary fuel pump can help alleviate the problem.

I live in Arizona and I can verify it makes a difference in the running of the car, easier starting, and lack of fuel smell after parking the car on a hot day and coming back later. Night and day difference. In a cooler climate Or with non-ethanol fuel it may not be as noticeable. That said I convinced a friend in Wisconsin to switch and he said it transformed his car and solved all of his low speed/low RPM driving issues that he had assumed were carb related.

[Hi_Fi_Guy]

Trackrash, I see you are in Sebastopol. Beautiful location, you are lucky to live near such stunning scenery and great driving roads. Guessing any fuel pump probably works fine there. I don’t think you have as many 115-120 degree days as we do in Arizona. Running a carbureted air cooled car here in the summer can be a real chore.

[rac390]

Originally Posted by Trackrash

FWIW, I have had a Facet solid state in my car since the last century. Still works great, no issues. I have heard the new pumps aren't the same? Anyone know?

https://www.pegasusautoracing.com/productdetails.asp?RecId=7550&msclkid=78164432e7061db1db571b1f1e3fe5e8&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping&utm_term=1100404266775&utm_content=Ad%20group%20%231

Hi Gordon, can you post a picture of how you mounted the Facet cube?

Thanks,
Rick