Just the design is different, so not required. For example, overhead cam inline 4 engines sitting upright have a well that the valve stem and cam follower sit in. This fills with oil which can be forced down between the valve guide and stem by positive crankcase pressure (breathing). In a horizontal pushrod engine this doesn't happen.
Sent from my ONEPLUS A3003 using Tapatalk
CU Engine Cylinder Seals??
Moderators: User administrators, Moderators
- ajsimmo
- Trader
- Posts: 2698
- Joined: 23 Mar 2009, 14:06
- 80-90 Mem No: 6542
- Location: Isle of Arran
- Contact:
Re: CU Engine Cylinder Seals??
The Campershack - (website paused)
WBX Rebuilds & Upgrades from the beautiful Isle of Arran
WBX Rebuilds & Upgrades from the beautiful Isle of Arran
- itchyfeet
- Registered user
- Posts: 12427
- Joined: 23 Jul 2007, 17:24
- 80-90 Mem No: 12733
- Location: South Hampshire
Re: CU Engine Cylinder Seals??
Andyroo wrote:Ah, so what seals the valves then?
as said not needed due to valves being horizontal.
-
- Trader
- Posts: 2579
- Joined: 27 May 2009, 18:56
- 80-90 Mem No: 16628
- Location: hayling island
Re: CU Engine Cylinder Seals??
Aircooleds had them but they don’t do much, check guide and valve wear
- Andyroo
- Registered user
- Posts: 133
- Joined: 18 Jan 2018, 19:35
- 80-90 Mem No: 16758
- Location: North East England
Re: CU Engine Cylinder Seals??
When I removed the valves and cleaned the head I noticed that there wasn't any seals.
I assumed that there should be some and they were just another corner that had been cut during the life of the van.
After looking on various websites I was seeing seals for some T25's, but not for a CU.
I haven't found a 9mm one for any vehicle.
So, seeing as I can't get them and there wasn't any fitted when I stripped the heads I'm guessing it'll be alright to rebuild the engine without them.
Right?
I assumed that there should be some and they were just another corner that had been cut during the life of the van.
After looking on various websites I was seeing seals for some T25's, but not for a CU.
I haven't found a 9mm one for any vehicle.
So, seeing as I can't get them and there wasn't any fitted when I stripped the heads I'm guessing it'll be alright to rebuild the engine without them.
Right?
- 937carrera
- Registered user
- Posts: 3599
- Joined: 05 Apr 2015, 19:29
- 80-90 Mem No: 16333
- Location: N Yorks.
Re: CU Engine Cylinder Seals??
I had a look around too,not trusting my memory. No valve stem oil seals on the CU engine or they type 4 engine it is based on.
There was a simple seal introduced on type 1/2 engines in the mid sixties, from what I have read. I'm grateful for what Andrew posted, he confirmed what I had worked out /thought, but as I wasn't sure didn't want to post anything.
The seals you have seen will be for the diesel engines - inline upright 4 pots
There was a simple seal introduced on type 1/2 engines in the mid sixties, from what I have read. I'm grateful for what Andrew posted, he confirmed what I had worked out /thought, but as I wasn't sure didn't want to post anything.
The seals you have seen will be for the diesel engines - inline upright 4 pots
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
- bigherb
- Registered user
- Posts: 2579
- Joined: 27 Mar 2008, 13:50
- 80-90 Mem No: 5789
- Location: West Kent
Re: CU Engine Cylinder Seals??
Yes, VW stopped fitting them in the mid 70's. They where to stop oil being sucked down the valve guides on the overrun with the throttle is closed.Andyroo wrote: So, seeing as I can't get them and there wasn't any fitted when I stripped the heads I'm guessing it'll be alright to rebuild the engine without them.
Right?
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow
- Andyroo
- Registered user
- Posts: 133
- Joined: 18 Jan 2018, 19:35
- 80-90 Mem No: 16758
- Location: North East England
Re: CU Engine Cylinder Seals??
Brilliant. Thanks for the confirmation.
Thank you all again.
Sent from my iPhone using Tapatalk
Thank you all again.
Sent from my iPhone using Tapatalk