So after having my Type 1 engine out back in the summer, the chap who does that kind of work for me reckoned that there was a crack on the inlet manifold and that it would be a good idea to find a replacement. His reasoning behind thinking there was a crack, was a discolouration on the head riser pipe that implied gases escaping. Sounds logical, and I'm going to bow to superior knowledge on this one. Got myself what looked like a decent 2nd hand jobbie, and after forking out 4 hours labour charge to get it all swapped over, Bob should well have been my mothers brother. After the engine was out, I have to say Clem has been a joy to drive, and never missed a beat on the 300 mile round trip up to Techenders 2 weeks ago. Since the manifold was changed about 10 days ago, it's not started right and has just, well, not been as good. Took a look in the engine bay when I got back this evening.......... To say I'm gutted just doesn't cover it. Four hours labour charge and I'm in a worse situation that I was. (insert words that won't get past the swear filter here) I'm tempted to phone mechanic Alex tomorrow and ask him if he's got the old one still, and get him to put it back on. I also know I'm going to have to chalk it up to experience, and that I'll have to shell out more cash to get it sorted. I'm hoping that he's still got my original manifold kicking around as I'm now not sure sourcing yet another one would be any better and could potentially be even worse again; and I'm also hoping that some of the original 4 hours labour was the fact that it had to be adapted slightly to fit my oil bath air cleaner - and so maybe it might be a quicker (less costly) job next time. Grrrrrrrrrrrrrrr. I mean, is there a dead cert way of telling that one of these is good, without actually fitting it? Or is it just guess work til it starts leaking? This one looked fine. And what is it that's leaking, I assume, down from the carb? (sorry if that's a really stupid question!)
Give it a good clean off and smear some tiger seal round it, see if the symptoms improve, it does look like a painted used one though !!!
maybe a couple of things.............. did you make sure the pre-heat pipes where clear.... the liquid maybe condensation gathering at the bottom of the inlet riser.... if its had a leak and now that's fixed did the mechanic re do the timing....
That’s just a cast alloy jacket around the pipes It allows heat from the heat risers to spread to the inlet pipes
Pre heat pipes were clear, sorry Sarah if it's a dud you know I'll give you cash back, doesn't help much but !
The stuff leaking is probably residual oil and muck bubbling out due to getting hot Why did he have to modify it to work with your oil bath? Did he check the heat riser tubes weren’t bunged up with carbon
Oh yeah, I know it's a used one. I'll google tiger seal and give it a clean off. Yep, pre heat pipes were nice and clear. The liquid that appears to now be oozing from a crack feels oily. The manifold pictured is a 2nd hand replacement, so that whole shebang was swapped over. Can't say for sure he redid the timing, but he's a good bloke whom I trust so I would assume so.
No seriously Dunc, I'm not trying to cast blame here - it looked good and I know you wouldn't have given me a dud intentionally. I'm more interested in what is leaking and from where, and is there a fail safe way to check these things out before fitting them. Okay. That's reassuring. So is that not stuff leaking out from a crack? The manifold got modified because I didn't notice that the pipe sticking out the side was for a servo and not an air cleaner, plus it had been welded up at some point in it's life. So the hole was redrilled and a barbed fitting inserted that now goes to my oil bath.
I don't do type 1 if I am honest, if Flakey sold it sure its good, get your man to check what he has done, maybe the carb has been disturbed now so all the crap that was sat in the bottom of the carb has floated about and blocked something !!
No nothings leaking The steel pipes run inside and the alloy part is just a jacket moulded around them The fluids probable a bit of old oil that’s been sitting in the join between the casting and pipe If your heat riser pipes are clear your problem lies elsewhere
^this. There's just a cast jacket around the steel pipes to hold everything together. Possible that during installation, something else has changed/been moved. Take it back and ask him to look at it. What exactly doesn't it do right now?
Oh right, so the visible join between the alloy and the steel isn't actually a join at all? Just pipes surrounded by the alloy? Hmmmm. Thanks @paradox, I am forever learning new things! Panic over?
They rot from the bottom along the joint where they meet the pre heat pipe not where your arrow is on the photo. Has your choke wire jumped off?
Has he cocked this up? Any air leak (including one from a duff oil bath vac unit) will affect how the engine's running.
Can you take some pics of the inlet manifold and oil bath etc I’m struggling to think why anything would need to be modified
