1967 Datsun 2000 Roadster - Elec fuel pump

[Bob Kontak]

Bone stock. SU carbs. Mechanical pump. Maybe 130hp?

How do I determine the correct electric fuel pump application?

I have to be over working this.

I am right down the street from Summit Racing. More pumps than I can shake a stick at. Don't know how to choose one.

[t-tom]

The SU carbs will run just fine at 3-4psi about what the stock mechanical pump puts out. I'd just buy a pump and a pressure regulator.

[356racing]

I have used the Carter P60504 in that exact application.

[Bob Kontak]

Originally Posted by 356racing

I have used the Carter P60504 in that exact application.

Did you use a regulator? I don't understand if it's an option or mandatory to have one.

I see the Carter 4070 that is 4-8 psi but seems like overkill. I will take a look at 60504 once back to shop.

Thanks.

[aigel]

Didn't this have an electric pump from the factory? I had an MGB and went with a basic electric fuel pump like this:

https://www.pegasusautoracing.com/productdetails.asp?RecId=12180&utm_source=google&utm_medium=cpc&utm_campaign=FAC-40107&utm_source=google&utm_medium=paid_search&utm_campaign=paid_search_google_pla&scid=scplp11650512&gclid=Cj0KEQjw0dy4BRCuuL_e5MeqmNABEiQAq8iNI4hWGmCt uG9FOH4z4ToLL5TKIOrBZrb6a_2CLksjB3kaAukk8P8HAQ

It ran the weber carb (conversion) just great.

G

[Bob Kontak]

Originally Posted by aigel

Didn't this have an electric pump from the factory?

Z Cars had electric. They are a good option for the retrofit so I am reading.

[356racing]

I did not use a regulator. That is my go to pump for everything carbureted.

[Bob Kontak]

Originally Posted by 356racing

I did not use a regulator. That is my go to pump for everything carbureted.

Sweet. I'll get that one.

Lots of good reviews.

http://www.summitracing.com/parts/crt-p60504/overview/

[lgb240]

Bob,

Quick question... Do you have a '67 2000 roadster (with an SRL vin#)? or is a '67 with a 2000 transplant (SPL vin #)

Just curious... the SRL '67.5 2L Roadster is a very rare car ... not many low windshield 2L Roadsters were made, or still survive. Good for you if have an SRL car (I have a 67.5 2L Roadster, SRL 00016)

For your SU's, any electric pump putting out about 3 or 4 lbs will be fine. Be sure to put a filter between the fuel tank and pump, and most low pressure electric pumps like to be gravity fed from the tank, so mount it accordingly. Use rubber pads to cushion it's vibrations.

Also early Z's did not have an electric pump .... they had a mechanical pump - an arm actuated on a lobe running of the front of the overhead cam.

post some pics of your roadster...

Enjoy the ride
lgb240

[Bob Kontak]

Originally Posted by lgb240

Just curious... the SRL '67.5 2L Roadster is a very rare car ... not many low windshield 2L Roadsters were made, or still survive.

Called the owner. He knew exactly what you were talking about. He did not mention windshield but he mentioned the dash being different. The glass being shorter on the 67 will be an interesting factoid for him to know.

His is a 68 SRL vin. My mistake. He has a 77 XJ and a 78 Esprit. I get them confused. Also a 260Z, which I think has a mechanical pump. 311s.org mentions later 70's for the electric pumps in posts.

I will get photos tomorrow. Putting pump on near Oil City, PA about 120 miles from Akron. I was there in '75 the day he bought it from my ex-brother-in-law (before either of us married the sisters). $1,000.

[Embraer]

I'd use a regulator. My SU's on my tr4 needed the regulator when I added an electrical pump

[Bob Kontak]

Originally Posted by Embraer

I'd use a regulator. My SU's on my tr4 needed the regulator when I added an electrical pump

$25 for a simple Holly regulator at Summit Racing. 1-4 psi range.

[Embraer]

That's exactly what I used on mine. The hs6's, at least, were very fickle with fuel pressure

[Bob Kontak]

Originally Posted by Embraer

That's exactly what I used on mine. The hs6's, at least, were very fickle with fuel pressure

For $25, what is the downside except the carbs control it just fine?

[Bob Kontak]

Originally Posted by lgb240

post some pics of your roadster...

Told pal about short windshield. He knew. Also knew about some special support your car has for the top.

Here are pics from today. His serial number in 68 is around 2700.

He was talking about his dash and how it's original. Seems they don't hold up too well and his has weathered time (in a hermetically sealed garage for 40 years) pretty well.

How many 67's were made?

[Bob Kontak]

Originally Posted by Embraer

That's exactly what I used on mine. The hs6's, at least, were very fickle with fuel pressure

Bought the pump 356Racing recommended as well as a relay kit and the regulator.

Did a rough placement of everything. Hooked all up. Turn the key to run. The filter is filling up. Quiet pump. Beauty. Start it. Cranked three times and slowed down.

Pal said "This battery is not that old and I have been charging it since yesterday".

2006 battery date. Sigh. Next week finish.

Good day though. No real issues for first time doing this.

Thanks to all.


FWIW - nice to live in Summit County, Ohio.