Hey I just purchsed some pretty nice parts from two people here....one of which was aluminum retainers for whatever reason I thought it said titanium...can anyone shed some light as to what effect these will have with an aggressive camshaft profile?

 

aluminum??? can they hold any power at all???

 

The right kind of aluminum can be quite strong..but still..ya its the heat issue that concerns me more. Most aluminum has a melting point of 800F or less and warps at much lower temps. Friction + rotational stress & shear stress = heat and torque tear. But try it out and let us know.

 

I think I might I just to not want to end up with bent valves and ompletel engine failure KMS sells these retainers.

 

If its not from aluminium but from aluminium alloy (we call) dural (Al-Cu4-Mg) or superdural (Al-Cu-Mg1) (hope its the same in english), than its OK. Its better if dural is hard anodized (dont know if its what I mean, we call it elox - its a kind of surface treatment). Than you get retainers with strength of constructional steel (dural has up to 400MPa, superdural has up to 500MPa), twice softer than titanium (2800 kg/m3, titanium has 4500kg/m3) and with hardened surface against abrasive wear.
Im about to have it on my H23 VTEC when it will by done...

 

there is VERY ot but....



what the hell shifter is that you have in your car?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeZ &raquo;</TD></TR><TR><TD CLASS="quote">If its not from aluminium but from aluminium alloy (we call) dural (Al-Cu4-Mg) or superdural (Al-Cu-Mg1) (hope its the same in english), than its OK. Its better if dural is hard anodized (dont know if its what I mean, we call it elox - its a kind of surface treatment). Than you get retainers with strength of constructional steel (dural has up to 400MPa, superdural has up to 500MPa), twice softer than titanium (2800 kg/m3, titanium has 4500kg/m3) and with hardened surface against abrasive wear.
Im about to have it on my H23 VTEC when it will by done...</TD></TR></TABLE>

 

looks to be a sequential?

 

I do not know what they are other then aluminum...I will have to do more research on whether or not it is an alloy my mechanic seems to thinks so.

 

yep, sequential shifter powered by electromagnet want more pics?

 

i would

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeZ &raquo;</TD></TR><TR><TD CLASS="quote"> yep, sequential shifter powered by electromagnet want more pics? </TD></TR></TABLE>
pics

 

in for the pics.,

 

More pics!

 

OK guys, Im pleased that you are interested But let me make independent thread OK? It does not belong here. Ill put in more info,more pics and a small vid OK?? Ill post it on monday

 

O.k...now does anyone have anything to add about the Aluminum retainers?

 

no

 

I know that JG used to make them but they discontinued them in 2000. I have them in my JG head. Everyone upgraded to titanium because it's stronger but to be honest, I hear about titainum reacting with some other metal will cause it to become brittle and break. It seems to me that aluminum would have more flex and save a motor under the same condition.