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Post by headcoats on Feb 14, 2021 16:33:10 GMT 1
Got some YPVS barrels but have no studs but what can i use for replacement other than the OEM ones ?
They only hold 20 pounds if torque but what about stretch etc ?
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Post by arrdy350 on Feb 14, 2021 17:01:57 GMT 1
I bought my head studs from Norbo.
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Post by headcoats on Feb 14, 2021 17:35:09 GMT 1
Saw some on the Titan Classics site but would thete be problems using titanium ?
I will probably use stainless head bolts too
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Post by bare on Feb 14, 2021 17:48:03 GMT 1
Fit whatever pleases you. But.. there is absolutely Zero wrong with the oem Yama studs.
They have proven to survive almost 40 years without deterioration.
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Post by headcoats on Feb 14, 2021 18:01:19 GMT 1
The titanium ones are half the price of OEM
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Post by muttsnuts on Feb 14, 2021 18:52:35 GMT 1
if titanium 'gauls" in the ally or the nuts then you'll have a nightmare trying to free them, its a problem with titanium and caution should always be used when fitting them
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Post by midlifecrisisrd on Feb 14, 2021 18:57:52 GMT 1
Just buy some high tensile m8 threaded rod and angle grind to side
Steve
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Post by headcoats on Feb 14, 2021 19:44:14 GMT 1
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Post by rich on Feb 14, 2021 19:54:57 GMT 1
I bought some M8 exhaust studs off ebay
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Post by headcoats on Feb 14, 2021 20:06:35 GMT 1
Yes can't say I'm too keen on the titanium ones
Of the exhaust studs do you know what length and the un- threaded bit in the middle
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Post by JonW on Feb 15, 2021 3:07:24 GMT 1
Ive always worried about Ti as it galls. Awful stuff if you have a problem.  I'd buy OEMS, but them I do like Yams stuff lol |
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Post by midlifecrisisrd on Feb 15, 2021 10:17:59 GMT 1
Ive always worried about Ti as it galls. Awful stuff if you have a problem. I'd buy OEMS, but them I do like Yams stuff lol I'm going the same way with the TR You get Ti and stainless stud kits and hear of engine probs with st7d failures I'll be sticking to the high tensile originals Steve |
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Post by headcoats on Feb 15, 2021 10:21:04 GMT 1
Would the exhaust studs Rich has mentioned be high tensile ?
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Post by lc350pete on Feb 15, 2021 10:21:44 GMT 1
Ive always worried about Ti as it galls. Awful stuff if you have a problem. I'd buy OEMS, but them I do like Yams stuff lol Yes I’ve never understood the thing with Titanium if it was better then surely Yamaha would use it |
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Post by headcoats on Feb 15, 2021 12:23:04 GMT 1
Has anyone got one of these studs out to measure please
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Post by steve63 on Feb 15, 2021 14:00:06 GMT 1
Ive always worried about Ti as it galls. Awful stuff if you have a problem. I'd buy OEMS, but them I do like Yams stuff lol Yes I’ve never understood the thing with Titanium if it was better then surely Yamaha would use it Apart from the fact it's a lot more expensive they maybe would. In the 1980's it was probably even more expensive than it is now in real terms. I'd use it if I could justify the expense but not somewhere no one can see it  I paid £300 for a 2m x 1m sheet of 1mm in about 1997. A 2m x 1m x 1.5mm sheet of 316L stainless is only £88 now. |
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Post by Tobyjugs on Feb 15, 2021 17:15:12 GMT 1
Stainless steel gauls as well and how many people have stainless steel fittings?
Both need to be used with the correct lubricant or paste.
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Post by JonW on Feb 16, 2021 3:15:17 GMT 1
Stainless steel gauls as well and how many people have stainless steel fittings? Both need to be used with the correct lubricant or paste. yes but Ti will snap off much easier than SS Ive found. Some breaks like its made of cheese. Agree, always lube. A code to live by |
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Post by steve63 on Feb 16, 2021 13:45:05 GMT 1
Stainless steel gauls as well and how many people have stainless steel fittings? Both need to be used with the correct lubricant or paste. I think it's a separate thing to the galling but different materials used together react to each other causing corrosion. One of the worst is stainless on galvanised or zinc plated steel. For instance if you fitted a stainless bracket with galvanised screws. It's like the zinc is being drawn off the screw. Most of what we make here is 316L stainless and A4 fixings but occasionally we have to mix galv and stainless. In that case we always isolate them with fibre or nylon washers or some kind of tape. There are tables detailing the combinations of materials and the expected reactions. I have a titanium screw in my ankle that's been in for 41 years. It doesn't seem to be rejecting me. It will probably go in the pizza oven with me when my time is over |
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Post by Tobyjugs on Feb 16, 2021 14:53:45 GMT 1
Stainless steel gauls as well and how many people have stainless steel fittings? Both need to be used with the correct lubricant or paste. I think it's a separate thing to the galling but different materials used together react to each other causing corrosion. One of the worst is stainless on galvanised or zinc plated steel. For instance if you fitted a stainless bracket with galvanised screws. It's like the zinc is being drawn off the screw. Most of what we make here is 316L stainless and A4 fixings but occasionally we have to mix galv and stainless. In that case we always isolate them with fibre or nylon washers or some kind of tape. There are tables detailing the combinations of materials and the expected reactions. I have a titanium screw in my ankle that's been in for 41 years. It doesn't seem to be rejecting me. It will probably go in the pizza oven with me when my time is over Yes your right and stainless steel is higher up the corrosion list than normal steel if used with aluminium. Don't know anything about Ti. |
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Post by Tobyjugs on Feb 19, 2021 21:50:15 GMT 1
I forgot to say I use 46MR401 from Kluber for titanium nuts and bolts.
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