I had the pipe on the distributor end of the injection rail (return pipe?)replaced by a custom made job (vauxhall apparently don't make it anymore), but I suspect the internal diameter of the nut bit which pushes into the pipe may be a smaller id than the original. Is this anything to worry about?
Gary, yes it is going back to standard. Soon there will be some TB goodies for sale.
The problem I have is that vauxhall no longer do the supply and return hoses for the Astra Gsi.
However, a while ago before I had TBs I needed a new return hose and the partnumber I got was off of a cav.
Now I have quoted that number to my local Vaux part dept. and he says that the supply and return hoses are different sizes. I suppose he could me the screw fittings onto the rail are a different size???
it could be that to use different fittings, the hoses themselves might need to be different then - from memory, the feed fitting is the bigger right ? - so it could be something like -8 in, -6 return - however, like I said, they both go to a -6 hard line by the offside wishbone (assuming mk3 is the same as mk2).
I can't remember exactly - are the threads on the fuel rail built into it or are they m/m adapters you can remove ? - either way it sounds like you need to find out the thread and order yourself some bits from think automotive et al, plus some -6 fuel hose.
Sorry for my ignorance, what do you mean by -6 hose?
I know that the return hose fits and is available. If both hoses have the same diameter and the same fittings I will just buy two return hoses and use one as the supply hose. I need to check the size of the threads on the rail itself but its all at my parents house at the moment.
I'll let you know what sizes the fittings on the rail are.
ok i just checked EPC, the threaded unions for the feed and return stubs on thw fuel rail are different part numbers. the feed pipe + connector and the return pipe + connector are different part numbers.
Its not a case of being satisfied!
My concerns are that Vauxhall can no longer supply the correct pipes for my Astra GSi so I want to make sure I don't mess things up if I buy pipes from a Cav.
I'm sorry if you think I am being annoying by asking these questions.
Gary seemed only too please (as usual) to offer his help and experience.
those sizes ring a bell - I vaguely remember them now - the important bit is the threads - vauxhall have a habit of using metric on fluid connectors - but I seem to remember the fuel ones being a slightly larger pitch than the normal metrics.
-6, -8 etc is a common bore size notation for hoses and fittings - -6 is 3/8 inch, -8 is 1/2 inch, -3 is 3/16 iirc (brake hose)
the reason the thread is pain is because you have a whole load of different types : metric, JIC, NPT, BSP, UNF are the most common - certain sizes of some of them are interchangeable - most are not though - they all differ in some way or another - e.g some threads are tapered, some not - then you got more fun with the seat mating type - convex, concave, flat, cone..
well i put them up just to point out that cav and astra are different parts, i can get any number you need. Theres just one thing thats confusing me and that is that it lists 2 parts for the feed and 2 parts for the return, i dont understand.
Dowding, I also needed a new fule feed pipe which Vauxhall no longer make for my GTE 16v. I solved the problem by taking the split pipe to a pipe specialist who made me up a new pipe by copying the split one I gave them. Cost me half the price that Vauxhall would have charged too. My only slight concern was that the new one had a slightly smaller diameter neck on it, but I have been reliably informed that this would not disturb pressure, and is nothing to worry about.