Rover V8 3.9 (Carb) Fuel Line Size

AntonZdz · Post by **AntonZdz** » Tue Nov 20, 2012 8:08 am

All

Apologies if this is covered somewhere else, have done a quick search but I am new to this, so I may have missed it!

I am after the fitting size I need to connect the fuel in and fuel return line to the inlet manifold?

Thanks

Anton

kiwicar · Post by **kiwicar** » Tue Nov 20, 2012 9:00 am

Hi
I think it is about 3/8 thin wall pipe but they are push on rubber pipe over brass pipe and jubilee clip jobbies. . . -6 Jic/AN fittings if you are prettying it up but that gets expensive (and I should know you would not believe what I have spent with Torques UK in the last year

)
Best regards
Mike

AntonZdz · Post by **AntonZdz** » Tue Nov 20, 2012 9:17 am

Thanks for that!

I know what you mean about expensive, due to the small space inside the MK2 MX5 engine bay, I am having to relocate the oil filter, I spent far far too much money on billet ally jobies from torques!

In terms of fitting an AN6 hose, would I then tighten this up with a jubilee clip or can you get an adapter for a proper AN fitting?

Thanks

Anton

kiwicar · Post by **kiwicar** » Tue Nov 20, 2012 10:06 am

Hi
If it were me I would either stay with rubber pipe and the brass pipe as fitted as standard, or drill the inlets to the carbs 3/8 NPT (if they will) and use a 3/8 NPT to -6AN fitting. you could go 3/8 brass pipe to to 3/8 NPT / BSP femail fitting (like on a brake pipe) that in turn adapted to a -6 AN/JIC fitting but I do not know who does such bits

actually you can get -6 flaired pipe fittings but you need the flairing tool, 37 degree is not common, but that would let you go direct from stainless braided pipe with a -6 male fitting to the carb nice and neatly. I would not go via rubber pipe to push on Jic/AN adaptor with jubilee clips holding everything in place, it just looks naf.
Best regards
Mike

AntonZdz · Post by **AntonZdz** » Tue Nov 20, 2012 2:20 pm

Hi

The flared option sounds good, how would that work though, am I flaring the pipe that's fitted as standard, and then getting an attachment to accept 6AN pipe (coincidentally that is the size i was planning to use for the fuel lines)?

Thanks

kiwicar · Post by **kiwicar** » Tue Nov 20, 2012 2:28 pm

Hi
Yes you put a ferule and "nut" on the pipe into the carb then flair the end of the pipe like you would a brake pipe (but at 37 degrees) then fit a -6 male fitting on the end of the braded pipe. I have not done it so I am not sure if you can actually get the tool in to do it!

You can get the fittings from a company in the UK that I can't for the life of me remember their name!

Best regards
Mike
Edit
Found them on page 40 of he earls catalogue here http://www.earls.co.uk/e-catalogue/adapters.php
Not the place I was thinking of but they are there

mgbv8 · Post by **mgbv8** » Tue Nov 20, 2012 3:03 pm

kiwicar wrote:Hi
Yes you put a ferule and "nut" on the pipe into the carb then flair the end of the pipe like you would a brake pipe (but at 37 degrees) then fit a -6 male fitting on the end of the braded pipe. I have not done it so I am not sure if you can actually get the tool in to do it! You can get the fittings from a company in the UK that I can't for the life of me remember their name!
Best regards
Mike
Edit
Found them on page 40 of he earls catalogue here http://www.earls.co.uk/e-catalogue/adapters.php
Not the place I was thinking of but they are there

Think Automotive.....

http://www.thinkauto.com/

kiwicar · Post by **kiwicar** » Tue Nov 20, 2012 3:12 pm

That is them. . . .
thanks
Mike

AntonZdz · Post by **AntonZdz** » Fri Nov 23, 2012 10:49 am

Thanks for the links, Am I looking for the Pipe Thread to AN adapter, or just a female AN Adapter?

(sorry for the silly questions, I am new to all of this)

Thanks

Anton

kiwicar · Post by **kiwicar** » Fri Nov 23, 2012 11:14 am

Hi
I would use NPT-T or all AN thread sizes, just because they involve fewer adaptors, BSP-T to AN is across two standards and less common as a series of fittings -6 AN, -6BSP-T and 3/8 NPT are all intended to work with 3/8 OD thin wall steel tube but AN and NTP-T are related in that they are from the same standards organisation. If you need the tap for NTP, they cost a fortune from the UK like £20+ for a 3/8 NPT-T They are are about £6 off E-bay from mainland China including delivery and take about a week to arrive I had one on my door mat 65 hours after placing the order once, I have a pair of 3/4 NPT, first and plug, that cost me £16 including shipping from Hongkong , the cheepest UK I could find was £130 for just the first cut.
Best regards
Mike

AntonZdz · Post by **AntonZdz** » Wed Nov 28, 2012 8:55 am

Thanks for the advice. Once I get everything mounted up I will order the right bits and set it all up!

Thanks

Ian Anderson · Post by **Ian Anderson** » Wed Nov 28, 2012 12:31 pm

If you live in the South East

Take your bits into Think Automotive (Twickenham)
Say
I need to connect this to this and this

They go through the back and bring you back the bits, pipes, connectors etc.

Great service
Ian