Search found 125 matches

by nj1052
Wed Mar 26, 2014 11:28 am
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: CIS vs MFI Fuel Pump
Replies: 3
Views: 266

Re: CIS vs MFI Fuel Pump

For the sake of accuracy and because I have just re-read the manual (memory is fickle!) the reason for the excess flow rate is primarily to keep the fuel as cool as possible, not for cooling the pump. So the least time spent inside the MFI pump the less heat it will pick up. The CIS pump flow rate i...
by nj1052
Tue Mar 25, 2014 9:00 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: CIS vs MFI Fuel Pump
Replies: 3
Views: 266

Re: CIS vs MFI Fuel Pump

I don't know the specs on a CIS pump but the spec flow rate for an MFI system is far higher than the actual consumption because the excess fuel is used to help cool the mechanical pump. For my 2.2S the required flow rate is 125 l/hr at 12.5PSI. It may be more for larger motors. I suggest that you fi...
by nj1052
Thu Mar 20, 2014 11:12 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: Fuel Pump for 1973 with MFI
Replies: 31
Views: 1470

Re: Fuel Pump for 1973 with MFI

Hi Jonathan

In short................Yes. It is what I have on my 2.2S. No problems so far.

Cheers

Nigel
by nj1052
Thu Mar 20, 2014 3:11 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: Fuel Pump for 1973 with MFI
Replies: 31
Views: 1470

Re: Fuel Pump for 1973 with MFI

You are correct, there is a return from the MFI pump back to the tank. It is the old T piece bypass connection for the original Bosch pump that needs either blanking off or removing completely. The spec supply pressure for the MFI pump is 12.5 PSI which is controlled at the fuel console by a restric...
by nj1052
Sun Mar 16, 2014 3:29 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: Fuel Pump for 1973 with MFI
Replies: 31
Views: 1470

Re: Fuel Pump for 1973 with MFI

I have one of these on my 2.2S and it works fine. It meets the specs for the original Bosch unit in terms of flow rate (VIP for MFI) and as the MFI supply is fixed at circa 12.5 psi its 1 bar rating is fine too. http://www.glencoeltd.co.uk/walbro-tcp012-out-tank-fuel-injection-pump-1-bar/ It is also...
by nj1052
Sat Feb 22, 2014 11:28 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: Tricky question for you!
Replies: 24
Views: 668

Re: Tricky question for you!

It strikes me that if you are competing against cars in your class with Hewland boxes the you need to do the same. The engineering effort involved to change to a different box is probably the same irrespective of the actual box so go for the best performance option. There is no question that a dog b...
by nj1052
Sun Feb 16, 2014 4:36 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: What 911 6 pot distributor is this please?
Replies: 8
Views: 345

Re: What 911 6 pot distributor is this please?

I am pretty sure that is a '73 2.7RS number. Probably means you can build a car around it and then let RM auction it ££££££££££££££!

Cheers

Nigel
by nj1052
Fri Feb 14, 2014 9:09 am
Forum: Classic Porsche General Chat
Topic: Picture hosting on this site
Replies: 145
Views: 38068

Re: Picture hosting on this site

Thank you!!!
by nj1052
Fri Feb 14, 2014 8:09 am
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: UK RHD 2.2S Production numbers
Replies: 28
Views: 1017

Re: UK RHD 2.2S Production numbers

Hi Jo My car is the elusive sister to yours, currently sitting snug and dry in its winter home waiting for a sunny spring day to come over the horizon rather than hurricanes! It is virtually identical to yours. http://i32.photobucket.com/albums/d15/njemail2/DSCF1324-2_zps75609175.jpg [/URL] Cheers N...
by nj1052
Wed Feb 05, 2014 3:20 pm
Forum: Classic Porsche General Chat
Topic: Bob Watson - contact details?
Replies: 14
Views: 395

Re: Bob Watson - contact details?

Hi there

I am pretty sure he now works with Alan Drayson at Canford Classics.

Cheers

Nigel
by nj1052
Sat Feb 01, 2014 12:09 am
Forum: For Sale - Porsche Parts/Misc etc.
Topic: Updated list : More 911 Parts to clear
Replies: 7
Views: 754

Re: 911 Parts to clear

Yes please for the fan

PM sent

Cheers

Nigel
by nj1052
Tue Jan 21, 2014 1:40 pm
Forum: Porsche Technical advice and help
Topic: 911 oil catch tank for racing/track days - help needed??
Replies: 4
Views: 260

Re: 911 oil catch tank for racing/track days - help needed??

Hi there

Try here:-

http://www.rallydesign.co.uk/advanced_s ... 4d1fhf2055

I have used them on a couple of race cars with no problems

Cheers

Nigel
by nj1052
Mon Dec 30, 2013 8:21 pm
Forum: Pre 1974 - Porsche 911 (longhood)
Topic: Fan housing sticker
Replies: 6
Views: 315

Re: Fan housing sticker

I have the complete Canford Classics set on my 2.2s and they are excellent.
by nj1052
Fri Oct 11, 2013 5:00 pm
Forum: Porsche Technical advice and help
Topic: Non Vacuum distributor pictures
Replies: 3
Views: 112

Re: Non Vacuum distributor pictures

Hi there

My '70 2.2s does not have a condenser attached to the distributor at all. Maybe its a CDI thing?

Cheers

Nigel