Bedford CF-UK Message Board Logo [Home] [Search] [FAQ]
Bedford CF-UK Message Board > CF Questions > Valves and valveseats?
[Private Message] [Register] [Profile] [Member list] [Log-in]
Who's Online:
There are 0 member(s), and 1 guest(s) online.
 
[Printable Version] [Post Reply]
Author Message
Anon
Deleted
Posts :
Location :
Status    : Offline

Valves and valveseats?

Hello everyone!

I´m looking for new lpg ready hardened valves and valveseats for my 2.3 petrol slant.
Has anyone an idea where to get these parts or even a good mechanic for overhauling bedford cylinder heads in or near York?

My problem is that my Beddie has a very bad compression going so far that its nearly not moving, but very bad stuttering and juggering (sorry for the incorrect words!). But when its running idle it seems nearly right.
I havent checked the compression with a compression tester yet (waiting for tools). I´m pretty sure that the problem is in the cylinder head, or rather the valves and seats. The beddie ran on unleaded petrol for (? a while?) and its got 64000 on the clock.
Or maybe broken pistonrings?

I already exchanged other sources of error like spark plugs + leads, timing and fan belt, adjusted valve clearance and timing.
And I´ve checked the ignition system on corect work and the whole engine on air leaks. I also checked the fuel system and its all working.

Any ideas?

Thanks for your replies in advance!

David
Sun 06 Nov 2016 @ 12:30 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

cylinder head

Hi Dave,any good machine shop should be able to fit hardend valve seats It should cost about £80 that should also be with having the head scimmed.Cheers Jim.

----------------------

Sun 06 Nov 2016 @ 18:37 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Hello. Have you changed the condenser and points in the distributor, checked for tracking in the distributor cap and also tried a different ignition coil. Did you change the lead from the coil to the dizzy cap as well as the plug leads. The running probs you describe could be electrical and you need to be sure before reaching for the spanners. Good luck.

Regards Andy
Mon 07 Nov 2016 @ 09:04 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

jimfixit wrote:
Hi Dave,any good machine shop should be able to fit hardend valve seats It should cost about £80 that should also be with having the head scimmed.Cheers Jim.


Wow if the engineering shops round your way charge £80 for an unleaded conversion including refacing the head, I may have to bring a few heads up and get them done.
I've paid £180 plus VAT for having mine done and most companies I went to see quoted similar. That doesn't include new valves, they just lapped the old ones to the new seats.
I've got a spare head here which I wanted to get done and have spare if I or somebody else wants one.
Cheers Frank
Tue 08 Nov 2016 @ 20:17 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Thanks for your replies!
Yes, I´ve checked the distributor, points and condensor at first as I tried to install the accuspark electronic ignition. It didn´t work so I went back to normal and adjusted it as it should be (thank you Haynes ).
It is running "normal" while running idle but when I´m driving it is really bumpy and not having any pulling power. I´m checking the compression today and then we´ll see whats on next.

Thanks for your help guys!
Dave
Sat 12 Nov 2016 @ 09:17 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Heads

Hi Frank,I will check with the shop and get the price now Mine was done some time back so I may be wrong.Cheers Jim.

----------------------

Sat 12 Nov 2016 @ 19:39 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Hello Dave. If your happy with the all the ignition components and if your compressions are reasonable check the carb for dirt or water particles floating around inside and blocking jets. also check the diaphragm for any holes or tears. I had a Cortina with water drops in the carb and it would tick over but when you tried to drive the water would suck up the main jet then drop back when you took your foot off.

Regards Andy
Sun 13 Nov 2016 @ 09:59 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Lumpy with power loss.

Hi Dave,

Since you have checked everything you can think about I am going to ask you to take a very close look at the inlet manifold for air leaks, and do check the thermostat housing and that stud copper washer and brass nut underneath the thermostat, this is a common water leak point into number two cylinder.
An air leak at the base of the carb. due to a bad gasket or distortion of the flange is also common, if you read back through the history of this engine it was first developed as a V8 and then redesigned which lead to less than perfect inlet manifold being cast into the shape of what we see fitted today.
Have the face flanges of the inlet manifold checked to make sure they are not distorted and fit new gaskets with a sealant when you replace it, while the manifold is off have it checked for cracking.

doujoy

----------------------

Sun 13 Nov 2016 @ 12:40 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Valves + Valveseats!

Hey guys!

News from my Sunhome:

It´s a bit embarrassing but I had to give up trying to fix my Bedford in front of my house (on the street).
So I towed it to a garage and now I now what was wrong:
-> Burned out exhaust valves.
The reason for the bad compression values and the backfiring.
It´s already fixed by an engineer (means new valves and seats.)
So its got a "converted" cylinder head for unleaded petrol.

One problem sorted, but another one coming up:
the famous oil gasket surrounding the crankshaft´is leaking (pretty bad)...
The mechanic said that he looked at the Haynes that I´ve left him and that it´s going to be a hell of a engine stripdown.
Additional to that I would like to replace all parts (like clutch, bearings, gaskets, etc) where access is possible once you got it opened.

But does this really mean to strip out the engine and the crankshaft?

I still got hope someone tells me "No, all you need to do is..."

Have a great start into 2017!

Dave
Sat 31 Dec 2016 @ 11:28 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Forgot to add that its going to be about 2000,- pounds...
Including parts like clutch, bearings, piston rings etc.
Bit much?
Sat 31 Dec 2016 @ 12:01 Edit this messageQuote this messagePMQuote this message
bluebedouin
Global Moderator
Posts : 2444
Location : Northampton,England.
Status    : Offline

BEDS+BEDFORDS wrote:
Forgot to add that its going to be about 2000,- pounds... Bit much?

Not necessarily.Depends on how much you like the van,how much you can afford to spend etc.
Over the 13+ years we had ours I'd estimate that we spent over 10,000 on it.It got to the stage where we just couldn't afford it anymore.However if we were to win the lottery.......
Sat 31 Dec 2016 @ 12:18 View bluebedouin   Email bluebedouin   Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

XSFrank wrote:
jimfixit wrote:
Hi Dave,any good machine shop should be able to fit hardend valve seats It should cost about £80 that should also be with having the head scimmed.Cheers Jim.


Wow if the engineering shops round your way charge £80 for an unleaded conversion including refacing the head, I may have to bring a few heads up and get them done.
I've paid £180 plus VAT for having mine done and most companies I went to see quoted similar. That doesn't include new valves, they just lapped the old ones to the new seats.
I've got a spare head here which I wanted to get done and have spare if I or somebody else wants one.
Cheers Frank


Hi Frank where abouts did you get yours done. It's one of the things Id like to do on my wagon.. Cheers. G

----------------------

Sun 01 Jan 2017 @ 19:23 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Hello. Assuming your losing oil from the rear crank seal engine removal is required to fix this. How good is your engine now? If the compression and oil pressure appear ok then you could just do the oil leak which will require a full bottom end gasket set and check/replace the clutch. Not ideal reusing white metal bearings but standard bearings and rings don't appear very often and you have just had the top end overhauled so no need to disturb that again. Alternatively you could try to find a short motor suitable for rebuilding whilst running what you have while your tracking down the parts you will need.

Regards Andy
Sun 01 Jan 2017 @ 21:50 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Thanks a lot for your replies everyone!

We decided to go for it.
There´s no other option as we spend already a lot of money on it.
Has anyone an idea where to get a new clutch, flywheel gear and piston rings?

I got the the old 9" clutch in my hands now and the supplier is "Borg and Beck".
I looked it up already but there are just NOS parts availlable. Isn´t that a problem using a "old" clutch? I mean its getting brittle somehow or not?

Greetings!
Sat 14 Jan 2017 @ 13:54 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

You should be able to get a new clutch from any good trade motorfactor as this is just a common replacement part. Hopefully a good make like Borg & Beck or LUK. Failing that try Adrian Bailey.
The ring gear for the flywheel if that's what you mean would be more of an issue. Have a look on ebay as there are various complete flywheels for sale. Even a brand new one.
http://www.ebay.co.uk/sch/i.html?_odkw=bedford+cf&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xbedford+cf+flywheel.TRS0&_nkw=bedford+cf+flywheel&_sacat=0
For piston rings try either Adrian Bailey or Stuart from Magard Motorsport http://magardsport.com/pages/contact
He's a really helpful guy and can supply all engine gaskets in good OE quality, tappet adjuster screws and anything else for the slant 4 engine as he builds race engines for HS & HSR Chevettes and Viva's.

Cheers Frank
Mon 23 Jan 2017 @ 07:59 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Hey everyone!

Thanks for all the tips!
"New" clutch is on its way now, got a NOS Borg+Beck clutch kit for 125,- quid.
The engineer whos rebuilding the engine wants to put in new pistons as the old ones seem to be worn. He said that the van must have been left for years and then someone took it for a ride without caring about oil and stuff.
Complete pistons for a 2.3 slant are hard to find. Just had a look on the bay but just the smaller ones for the 2000cc are offered. Anyway we´ll hopefully find some.

Greetings!
Dave

Sat 28 Jan 2017 @ 16:36 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Pistons.

Hi,

If the pistons are badly worn so will the bore walls be so they surely have to be talking about a re-bore of the cylinders which means oversized pistons.
You have more chance of picking up a second-hand engine and checking the compressions before you buy it.

doujoy

----------------------

Sat 28 Jan 2017 @ 21:30 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

head scim +valve seats

Hi,I am sorry the lad that did the work has left the firm now there quotes are in line with yours.Sorry I took so long .Cheers+beers Jim.

----------------------

Tue 07 Feb 2017 @ 21:15 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

jimfixit wrote:
Hi,I am sorry the lad that did the work has left the firm now there quotes are in line with yours.Sorry I took so long .Cheers+beers Jim.


Not to worry Mike. The lad probably did you a deal and the money went straight into his pocket
Just having Guy's head done at the moment, getting it ready for spring.
Cheers Frank
Tue 07 Feb 2017 @ 21:54 Edit this messageQuote this messagePMQuote this message
Anon
Deleted
Posts :
Location :
Status    : Offline

Your the man old son

----------------------

Wed 08 Feb 2017 @ 20:44 Edit this messageQuote this messagePMQuote this message
Time in GMT
[Post Reply]
New posts since your last visit Administrative Functions: Open/Close/Delete Thread / Move Thread
Old post

Forum Jump:

Back to the CF-UK Homepage ][ Email CF-UK

Powered by FunkBoard vCF0.74c