Hose from inlet manifold to bulkhead

[tim wood]

Morning all,
I’m in the process of refitting my cylinder head and inlet manifold after having the head refurbished
I’m faced with the issue of connecting the water outlet from the manifold to the heater pipe on the bulkhead.
As some of you will know the spigot sizes are different and in reality need a hose that tapers to fit the smaller connection at the bulkhead end.
I cannot source this hose, so if you know of any suppliers I would be grateful. I think most users either force a smaller hose over the manifold end or squeeze a too big hose on the bulkhead end. Neither of these solutions seem right to me.

I have heard of other answers such as using a sleeve on the bulkhead secured with epoxy ( j b weld)) and the like but I would be interested to hear how others have tackled this.

Thanks
Tim

[mgcjag]

Hi Tim..is the uprated silicon/cloth wrapped from SNGB not tapered?.. you can get various size tapered hosed on ebay etc and cloth wrap yourself if you can get a correct size....Fossways i believe do a taper hose for this..Steve

[tim wood]

Hi Steve,
Thanks for the reply.
I looked atthe Fosseway hose. I’ll contact Simon and see if he sells individually - I don’t really need the complete kit

I expect he will be at Stoneleigh in a couple of weeks time and could pick up there.

Tim

[mgcjag]

Check the sngb option...I thought it was correct..Steve

[rfs1957]

Check indeed carefully what SNGB are selling, as the last one I got from them was hopeless, uniform diameter along the whole length and unusable.

Another part for the Doesn’t-Fit-But-Trop-Fatigué-To-Complain Pile that accompanies us all.

Fosseway spec theirs as 182mm long with inside diameters tapering 13 to 16mm.

It fits perfectly, tho to be honest on my car 190mm would have been better.

Cost was a bit eye-watering at £29 plus VAT but it was an immediate and available solution. I don’t think they make a habit of selling individual hoses, either.

Good luck.

[tim wood]

As an update,
Fosseway are unable to help on this occasion. I’m awaiting a reply from SNGB.

It’s just occurred to me that the issue could be solved if the manifold connection could be changed for one with a smaller diameter outlet spigot. Quite why this wasn’t originally the case I can’t understand.

I think that the thread is 5/8 bspp. So what is needed is a coupling with this thread and a suitable hose connection. Should be a straightforward job to those with a lathe I would think ?
I’m searching for a ready made one.

[mgcjag]

Hi Tim..caution needed removeing the fitting from the manifold they are often corroded in place and the job can snowball for the sake of just useing a standard hose..Steve

[tim wood]

Thanks Steve,
The fitting is out !
I had an engineering shop remove it thinking that it may need a helicoil but they managed ok. Had the mating face planed as well to make sure that it was flat.

I’ve had the issue of stripped thread here on a previous car.

Tim

[mgcjag]

Result then

[tim wood]

Ok,
So SNGB have replied (very quickly) but unfortunately all of the variants they supply are plain straight hoses.
So it’s back to the drawing board !


Tim

[caveman]

I’ve just fitted an SNGB kit with no issues. The only criticism is that they weren’t marked, particularly the smaller hoses, and believe me, it can get confusing I was just happy to swap out the Kevlar type hoses after 23yrs of use (no issues I must add).

[Jack the lad]

If you can supply a drawing of the part required I can make one for you in a week or ten days (delay is due to waiting for a few parts for my lathe being re-conditioned) It will cost you postage for return to you and the raw material about £3.00, cheers John.

[Paul bow]

I bought a full kit from fosseway, in that kit they had this hose, I should call them, usual high standards

[tim wood]

I’ve looked at the Fosseway kit, already have some of their parts so as you say great quality.
At this time I only need the one hose and don’t really want to spend another £200.

[tim wood]

If you can supply a drawing of the part required I can make one for you in a week or ten days (delay is due to waiting for a few parts for my lathe being re-conditioned) It will cost you postage for return to you and the raw material about £3.00, cheers John.

Thanks for this great offer. Not sure that I can get a drawing but will bear in mind


Tim

[Jack the lad]

Hi Tim, if you wish you could send me the old insert and let me know how the new part would need to be different, it would save you having to measure the thread and hexagon. Would you want it to be alloy or stainless or perhaps brass? cheers John.

[tim wood]

Hi John,
That’s extremely generous of you.

I’ve ordered something of eBay which I’m hoping will do the job. Cheap at less than £4. And cheaper than a hose from the usuals which isn’t correct.
5/8 BSPP thread with a spigot size to fit a 1/2 inch id hose. If that works then I can use a standard and easy to obtain heater hose. (Probably got a bit amongst my bits ) I’ve checked and a 1/2 inch hose fits nicely on the bulkhead pipe.
If it’s not correct or simply isn’t any good then I’ll take you up on your kind offer.

Many thanks
Tim

[tim wood]

I think that I’ve solved this and at minimal cost. This is what you need to do

Take out the union from the manifold . Hope that the thread is still ok.

The thread is BSPP 3/8 ( pipe thread, parallel )

I bought from eBay a fitting with this thread and a 1/2 inch barbed outlet. Cost about £6.

Thus a simple length of 1/2 inch heater hose does the trick.
No expensive hoses needed, no forcing hose to fit.

Hopefully this will last

Tim

[rfs1957]

Yes, Tim, that's definitely the way to go ; having the step-down in diameters at the manifold rather than at the bulkhead pipe will make zero difference to the flow through there.

Can you put the Ebay-link up, and a picture of it installed perhaps ?

[tim wood]

This is the link

https://www.ebay.co.uk/ipp/132104181642 ... 14.l155433