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Hex Head Set Screws I think you'll find they are called
A bolt is shanked as you quite rightly state....
Setbolts is easier to understand. You only call them that to make your tech details longer.
Hex Head Set Screws I think you'll find they are called
A bolt is shanked as you quite rightly state....
You should know me well enough by now that I am the King of the long, rambling, description......Setbolts is easier to understand. You only call them that to make your tech details longer.
You should know me well enough by now that I am the King of the long, rambling, description......
If I was paid by the word for writing an O&M or Product Assembly and Build Document...I'd be fecking millionaire!!!
Verbose is often used when I am described at work!
The head bolts are 5/8" AF that's why so many get rounded using 16 mm bihex sockets on them. Rest are a mixture. Manifold bolts are M8. Make sure you get HT bolts not Halfrauds specials. And thick washers to spread the load..
My 5/8ths socket split open getting the head bolts off. That was fun. Metric was close enough though and we got away with it. Not risking it for tightening though.
The manifold bolts aren't M8. Same size as M10 but the thread isn't metric.
Regarding the heat shield problem - I'll be doing my HG's soon and was wondering about heat wrap instead of the accursed things, but I read somewhere that it can cause problems with corrosion and raised heat at the exhaust ports, but then I found a few reports of people just leaving the shields off altogether . . . https://www.landyzone.co.uk/land-rover/leaving-the-heat-shields-off.84736/#post-850691
Opinions from the experts?
According to Landrover they are. http://www.rimmerbros.co.uk/Item--i-ERR4961 If the ones you have are 10 mm ish but not metric thread they have to be 3/8" UNC.
Iv had no problems since doing mine
I wondered that. They've done a very very neat job of it if they have. I think the head gaskets were original though, you can see the Land Rover and Elring logos from the gasket kind of embossed in to the head. The manifold bolts were very rusty, and wasn't much bihex head on a few of them to get the 12mm (or whatever is should have been) bihex socket on, so I think they'd been there a looong time. I think the fact we polished a couple means they should have had an AF socket on them, and not the 12mm we used.Wonder if at some point someone else has had the manifolds off, buggered the threads, and retapped to another size.
Regarding the heat shield problem - I'll be doing my HG's soon and was wondering about heat wrap instead of the accursed things, but I read somewhere that it can cause problems with corrosion and raised heat at the exhaust ports, but then I found a few reports of people just leaving the shields off altogether . . . https://www.landyzone.co.uk/land-rover/leaving-the-heat-shields-off.84736/#post-850691
Opinions from the experts?
I'll be doing my HG's soon and was wondering about heat wrap instead of the accursed things,
I was just going to ask this myself Wammers. I've double checked Microcat and it does say M8, but the ones on my heads are not that. They're about 9.5mm diameter, and none of the metric taps I have fit the threads at all.
Do you know if the threads changed with the Thor engine? Although Micro cat does say the M8 is correct for all versions, the bolts on mine are not.
3/8" bolts are a 9/16" socket/spanner....9.5 mm is 3/8" so they will be 3/8" UNC threads on yours. However there is no direct equivalent AF spanner size to 12 mm. 7/16" would be to small and 1/2" would be to large.
Very true!!Usually but not always. Special bolts have differing head sizes for differing reasons.
Very true!!
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