Small crack between valves. 2.1 dj
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Small crack between valves. 2.1 dj
1988 Autohomes Karisma DJ 2.1 Auto
- DoubleOSeven
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Small crack between valves. 2.1 dj
I wouldn't put that head in my engine.
An expert welder could fix them but it'll be higher than the cost of a new head and they'd need to do large volumes to make it cost efficient for themselves.
Door Stops I'm afraid. When you rebuild get a temperature gauge fitted so you can keep an eye on your engine.
Heads only crack because of an issue with the engine, running too hot being the obvious.
An expert welder could fix them but it'll be higher than the cost of a new head and they'd need to do large volumes to make it cost efficient for themselves.
Door Stops I'm afraid. When you rebuild get a temperature gauge fitted so you can keep an eye on your engine.
Heads only crack because of an issue with the engine, running too hot being the obvious.
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- Oldiebut goodie
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Re: Small crack between valves. 2.1 dj
Normal cracks, nothing to worry about. Common to diesel and petrol engines. Worry only if very large or the valve seat is cracked. I would have no qualms at using that head ( if I had one of those funny engines).
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Re: Small crack between valves. 2.1 dj
Have to agree. You'd be hard pushed NOT to find cracks between valves. Common. Generally they don't get worse and you should be able to use it without issues. In fairness to DoubleOSeven, no one likes to see cracks like that in heads, but its not the end of the world.
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- itchyfeet
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Re: Small crack between valves. 2.1 dj
Small cracks can be. no problem but on the other hand they can over time keep cracking into the water channels.
It's your call, a new head is not cheap all old heads have cracks.
It really boils down to your budget, if you can afford a new head then do it but if you cant then fit that one and it will probably be ok for some time.
It's your call, a new head is not cheap all old heads have cracks.
It really boils down to your budget, if you can afford a new head then do it but if you cant then fit that one and it will probably be ok for some time.
Re: Small crack between valves. 2.1 dj
Great many thanks, been suggested I should grind it with a Dremel?
1988 Autohomes Karisma DJ 2.1 Auto
- Oldiebut goodie
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Re: Small crack between valves. 2.1 dj
Why? That would only make it bigger.
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- itchyfeet
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Re: Small crack between valves. 2.1 dj
Ciaoflyer wrote:Great many thanks, been suggested I should grind it with a Dremel?
yeh don't do that
leave it or buy a new one
Re: Small crack between valves. 2.1 dj
They said that it is a high hot spot and should be ground flat
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
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Re: Small crack between valves. 2.1 dj
Ciaoflyer wrote:They said that it is a high hot spot and should be ground flat
Serious engine builders will grind down the high material between seats ( on new heads) to make it flow better and stop cracks but this crack is already there and I assume you are not building a high performace engine with an old head.
Re: Small crack between valves. 2.1 dj
No, you are right not a high performance just standard. In terms of head cleaning an I right in thinking they don't require skimming? What is the best way to clean? Sorry guys but I am a newbie at this.
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
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Re: Small crack between valves. 2.1 dj
WBH heads seal on the recessed area so skimming the water jacket seal area is pointless.
you can use an old barrel with fine grinding paste to clean up the recessed surface.
you can use an old barrel with fine grinding paste to clean up the recessed surface.
- bigherb
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Re: Small crack between valves. 2.1 dj
Looks a bit big to me, the maximum width of the crack for reuse is 0.5mm
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Re: Small crack between valves. 2.1 dj
If I go down new cylinder head route, what about other side which is in much better condition (think it has already been replaced.). Can I just rebuild this, new guides etc? Also, advice on where to buy head, The Engine Shop?
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
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Re: Small crack between valves. 2.1 dj
New heads are AMC and the valves are cheese so buy a bare head from brickwerks and if your valves are in good condition you can reuse them.
Personally I'd refit it because I don't do high milage and I'd rather spend 100 quid on a gasket set later if it goes than 350 on a new head now, your call, depends upon your budget and use.
I have had a head crack right through and it was still drivable.
Personally I'd refit it because I don't do high milage and I'd rather spend 100 quid on a gasket set later if it goes than 350 on a new head now, your call, depends upon your budget and use.
I have had a head crack right through and it was still drivable.