Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[TheBoy]

Dealer, £120 + VAT for gasket, £59 + VAT for bolts  

ECP = £60 +VAT for HG, £26 + VAT for bolts...   ...again, mentions notches etc.  Anyone know what should be fitted to Omega TD?

[Kevin Wood]

It sounds like the gaskets are of different thicknesses and are fitted selectively or perhaps used to compensate for skimmed heads, etc.

You'll probably be able to see the notches on the edge of the gasket somewhere where it emerges from the side of the engine. It may be worth seeing if you have to do any work on the head before getting a replacement.

Kevin

[sassanach]

local factors do a head gasket for £41+vat  3 notch version ie max thickness

[TheBoy]

local factors do a head gasket for £41+vat  3 notch version ie max thickness

Blimey, can't get anywhere near that sort of price.  Do they do the bolts?

[sassanach]

bolts £33.30+vat  but even stretch bolts can be used again provided they havent exceeded there set length  however i must admit i always change them

[Taxi_Driver]

nope you have got all that other stuff already. you have a perfectly sweet lump sat in your garage KNOWN to work with a duff head, swap em and stop doing a balaclava

That must be a Wiltshire/Avon term for something, coz means nought to me, but think I can guess the meaning....

Just rang the same place I got previous HG set quotes from.  HG is around £60/£65, but need to know how many 'notches' it has, which is something to do with thickness??  They are now saying they don't list bolts, which usually mean they are not stretch bolts  

Its not one that ive heard of before either

[TheBoy]

OK, getting different advice, both publically and privately.

What should I do next, and why it will cure problem....

Even if you have privately or previously suggested something, please post here so we have all info in one place - I'm way beyond my knowledge, and struggling to keep up  

I really do need help on this, but really need to control budget on it now.

Wholehearted thanks in advance

[familyman]

Hiya TB. Okay been checkign out some things 'cause this is an old injection system got a bit lost on the electric injector. Right this injector DOES NOT measure flowbut has a lift sensor on it that provides an input to the ECU to enable accurate control of injection TIMING. The different connectors are for different degrees of timing, the resistance will be the same for all injectors. So you need to match injector to pump and ecu. Not saying this is definately the prob, but without it the ecu cant accurately time the injection.

The cylinder head is flat, normally only the swirl chambers crack. An engineering shop should be able to pull swirl chambers out and if ava. fit new ones. Should be able to then skim okay with no affect on compression as this is done in the piston crown.

Different thickness of HG is to accomadate piston protrusion above the block deck measured with dial gauge at tdc. As your not touching bottom end just fit a gasket with same no of notches/holes. Very important . to thick poor low compression no power lots of black smoke.   to thin high compression but fuel ignition to early poor power

Hope this helps some

[Martin_1962]

This is what I would do assuming no urgency

Remove replacement engine

Remove head form original

CLean and regrind in valves on bought engine

Fit recon head and new chain and pulleys

Refit

[TheBoy]

Hiya TB. Okay been checkign out some things 'cause this is an old injection system got a bit lost on the electric injector. Right this injector DOES NOT measure flowbut has a lift sensor on it that provides an input to the ECU to enable accurate control of injection TIMING. The different connectors are for different degrees of timing, the resistance will be the same for all injectors. So you need to match injector to pump and ecu. Not saying this is definately the prob, but without it the ecu cant accurately time the injection.

The cylinder head is flat, normally only the swirl chambers crack. An engineering shop should be able to pull swirl chambers out and if ava. fit new ones. Should be able to then skim okay with no affect on compression as this is done in the piston crown.

Different thickness of HG is to accomadate piston protrusion above the block deck measured with dial gauge at tdc. As your not touching bottom end just fit a gasket with same no of notches/holes. Very important . to thick poor low compression no power lots of black smoke.   to thin high compression but fuel ignition to early poor power

Hope this helps some

Runs equally badly on both injectors....

So I need to remove head to check the HG before buying one, or is it checkable from outside? Assuming I go down the head change route...

[familyman]

Normally you can check the gasket without removing head. Not sure where it will be but its normally a bit of gasket sticking out of head, not even able to guess where it is but if a factors will let you look at a gasket you should then be able to work where your one is. Your not going to try a pump swop first then, compression test will tell you if anything amis in engine first before ripping apart what could be a perfectly good lump, If timing has jumped you'll get low compression as there is not a lot of room for error on valve timing.  
Does this engine use shims on valve lifters or are they hydraulic like the petrol? If shimmed then just check for any valves with huge gaps this'll tell you if any valves are bent

[TheBoy]

Normally you can check the gasket without removing head. Not sure where it will be but its normally a bit of gasket sticking out of head, not even able to guess where it is but if a factors will let you look at a gasket you should then be able to work where your one is. Your not going to try a pump swop first then, compression test will tell you if anything amis in engine first before ripping apart what could be a perfectly good lump, If timing has jumped you'll get low compression as there is not a lot of room for error on valve timing.  
Does this engine use shims on valve lifters or are they hydraulic like the petrol? If shimmed then just check for any valves with huge gaps this'll tell you if any valves are bent

Are you suggesting I should try swapping pumps?

I think its hydraulic lifters.

Do you think its likely the chains have slipped, like the photo of article I posted earlier today?

[familyman]

Normally you can check the gasket without removing head. Not sure where it will be but its normally a bit of gasket sticking out of head, not even able to guess where it is but if a factors will let you look at a gasket you should then be able to work where your one is. Your not going to try a pump swop first then, compression test will tell you if anything amis in engine first before ripping apart what could be a perfectly good lump, If timing has jumped you'll get low compression as there is not a lot of room for error on valve timing.  
Does this engine use shims on valve lifters or are they hydraulic like the petrol? If shimmed then just check for any valves with huge gaps this'll tell you if any valves are bent

Are you suggesting I should try swapping pumps?

I think its hydraulic lifters.

Do you think its likely the chains have slipped, like the photo of article I posted earlier today?

Personally i would do a comp. test 1st. If you can get pins for checking timing do this as this will tell you if timing has slipped if okay leave. I just think that until you know whats going on inside the lump you may be doing work thats not needed.

Note diesel comp testers normally go higher than one dedicated to petrol, but a mutlipurpose one if it fits in glow plug holes should be okay

[sassanach]

i sure i saw the notches on your old engines headgasket  at the back of the head

[familyman]

i sure i saw the notches on your old engines headgasket  at the back of the head

Just make sure the no. of notches match the block your using not the head. your old engine may well be the same but check your new engine first.