Noisy engine and teddies all over the garage

bob i just read this on vw heritage i dont understand all this but might help .
Complete cylinder head. For 1800-2000cc Type 4 engine with stepped/oval exhaust port. No EGR holes. These heads have an improved sealing surface so no longer use the sealing rings as originally used. Includes rocker/inlet/exhaust studs.

 

@Paul Weeding
Paul, I've just read your post (especially the bit you highlighted) and it suddenly clicked that if there was a need for a hole into No 2 then it makes sense that they would also put a hole into No 1.
I had been looking for a hole underneath and hadn't looked further back into the engine to check near the intake for No1
Just popped out and had a look, I've got a hole by the intake for No 1 and I stuck a cable tie into it and it went in about 2 inches.
If I started it now I'd get lynched but it looks like that might be the culprit. I bloody hope so and if it is I'm driving the van to Scotland to give you a big wet sloppy kiss.

 

YES
@Paul Weeding is gonna get a big sloppy kiss from me.

and the engine builders gonna get a piece of my mind.

 

I would have thought that they (engine builder) would do a compression test as a matter of course, though I'm not sure if it would have made any difference to your problem maybe @Paul Weeding can explain?

Glad to see that you may have found the culprit.

 

Brilliant news..... Now pick those poor teddies up....

 

Great news. TLB does it again.

 

Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Green hammer finished hammerite??

No tongues

 

Well there are 2 things as to why a comp check wouldn't have shown this up...

1. until an engine has been run, the compression will be low until the rings have bedded in!!

2. The "holes" that needed to be plugged, go into the exhaust port (exhaust side of the exhaust valve), and not the actual cylinder, so again, a comp check wouldn't pick it up!!



And I'm not going to say a word about specialist engine builders not knowing their engine variances

 

Well the saga continues.......

After talking to the builder he accepted that he'd made a mistake and would try to correct it as soon as possible. Within 2 hours he was parked outside my house with a van full of various blanks of different sizes.

It turns out that the brass plug I'd seen was not the bung for the hole in No 2. The actual hole is about 2 cm away. This is No 2 and the cable tie points to the bung and just beside it you can see the hole where the engine tin is cutout. Beside the nut for the manifold. This hole goes directly into the exhaust valve chamber and should be blocked.



This is No 1 and the cable tie is stuck about 5 to 10 cm into the hole. The nut beside the hole is the inlet manifold nut furthest into the engine bay ie the front of the engine and as you can see the engine tin has a cutout here for this hole as well.



Investigation showed that these holes are not threaded. The builder suggested tapping the holes in situ and screwing bolts in to block the holes. I queried this because of the danger of swarf getting into the engine. He said it would be ok because it's the same as putting a helicoil in for a stripped spark plug thread. As for the swarf he said he'd put grease onto the tap to catch any swarf before it fell in the engine.

Anyway I gently explained to him that I didn't intend to wind up with a bodged engine that might have bits of metal in it. Then suggested that maybe a better idea would be to take the engine out, remove the head and just do the job properly.

He said he'd go and talk to his boss.

I phoned Heritage and spoke to Joshua who told me that all the heads come with these holes now and they sell bungs that just push in from inside. You have to order the bungs separately though and it isn't well publicised .

Engines coming out tomorrow and I may be camping by the weekend

 

feel your pain bob , lets hope they sort it for you , good job you shouted early . Needs flagging and maybe heritage ow you one on this

 

Hang on a sec...

That head is a new "1800" head, and the one on the other side is an old 1800 head?

Is that right?

If it is, then you'll have different valve sizes between the two heads!!

 

Yes, they only replaced the knackered head. Is that a problem?

It's got four new pistons and barrels on

 

Yes its a problem if the old head had the bigger valves. The new 1800 heads don't have big valves. If yours is an AP engine its likely got standard valves though, bit big ones

 

enjoy

paul you sure know your job

 

Kinda is a problem, as the engine will be running unbalanced...

1800 head 41x34 or 39.3x34 valves

New 1800 head 39.3x33 valves

Just depends on what the old head is really... I know it's technically knats cock tolerances, but in my book, they should be a matched pair!!

 

Oh FFS


I've got the old head here, hang on a min and I'll go and measure it