standard valve spring retainers

[steve briance]

Hello all. I am looking to see if anyone would happen to have a set of 20 valve spring retainers i could buy off them please?

I got a spare head last year and found to my surprise it had aluminium retainer in it. I had mixed emotions about these - surprise as unexpected bonus but then thought about; 'can aluminium really be durable enough for this job?'. Having said that, it had been on a running engine that was apparently in good order...

Without knowing what brand and therefore what grade aluminium, I don't fancy risking leaving them in the head that i am putting back on a freshly built engine. a cracked retainer is going to release valve into the path of upcoming pistons and that would be the end of the engine

The head is a 7A if that makes a difference, could be same parts as 3B but not sure about ABY.

fingers crossed

[rxl]

I have all the stock internals. Pm me

Gesendet von meinem EVA-L09 mit Tapatalk

[Error404]

Likewise, got a load here

[steve briance]

pm's sent!

thanks both :-)

[A1QSHIP]

Are you certain that the retainers are aluminum & not titanium?

[steve briance]

well, i did have that thought and am going to weigh some...

I've got a set of standard ones coming now just to be sure as looking at the ones that came with the head, they seem too silvery in colour to be Titanium. I have read that one test is use a grinder on the metal - Aluminium = no sparks, titanium = white sparks and ferrous metal = yellow sparks. I'm not sure i'm happy going near them with a grinder so hoping their weight will give up their identity.

Alu retainers seem to be around 7-8grams and titanium 10-12grams.

[A1QSHIP]

Titanium can be "slightly" magnetic with a strong enough magnet.

[steve briance]

neodymium magnet and no attraction.

weights are probably indicative of aluminium though the scales i was using were not totally convincing... 7grams then weight again and the same part weighs 9 grams! Oh well, it would have been too good to be true if they were titanium so I shall carry on with the standard parts and be sure of reliability.

cheers

[Error404]

Try and press a point into them - from a scribe or something similar. Titanium is pretty tough, you won’t be able to mark it very easily without impacting it
Stock ones on the way