[Z06] Titanium Exhaust valve
#1
Burning Brakes
Thread Starter
Titanium Exhaust valve
For inquiring minds - I ran the weights on my new titanium exhaust valves compared to the stainless. The titanium is 57% less!
New Brodix WCCH:
New Brodix WCCH:
Last edited by Corvee; 09-26-2013 at 08:16 PM.
#4
Le Mans Master
I believe your math is wrong
#7
Drifting
And tons of people have titanium Akropovic exhaust system which cost around $3.5k on street cars where it makes absolutely no difference lol. No one seems to bat and eye at that so which is crazier lighter valves which will improve any engines performance or a 10-20lb lighter exhaust system which seems to primarily be installed on cars that will never see a track and only putt around town?
To the OP congrats on the purchase, I'm running TiMo intake and exhaust valves on my self on my new engine. You are going to like them!
To the OP congrats on the purchase, I'm running TiMo intake and exhaust valves on my self on my new engine. You are going to like them!
#9
Burning Brakes
Thread Starter
#10
Interesting.
I don't know if what you are weighing there is a REV Extreme exhaust valve, but:
I'm looking at my invoice, and my REV Extreme exhaust valves were $40.625 each, $325.00 for the set.
The Rev Extremes are said to be 98 grams by more than one source.
#11
Ah. So on the way to the scale the advertised 98g Revs have picked up a couple pounds. Or grams. Not the first time advertised component specs came in a little off the mark, though.
For those interested in Ti exhaust valves I saw a blurb in the Ferrea catalog for a version that is supposed to be engineered to withstand high temperatures...
Dunno if they have any blanks for the LS7. Dunno if these are any better than other off-the-shelf Ti exhaust valves out there. I did learn that they will custom build a sodium filled exhaust valve for the LS7... minimum order 1,000 pieces.
.
For those interested in Ti exhaust valves I saw a blurb in the Ferrea catalog for a version that is supposed to be engineered to withstand high temperatures...
Originally Posted by Ferrea
"Our selection of [titanium] blanks now includes the New Special Hi-Temp, Nitrous compatible exhaust valves, unlike all other titanium valves, they will not flake, chip or peel at the bottom of the stem, due to heat or excessive movement."
.
Last edited by Mark2009; 09-26-2013 at 10:52 PM.
#12
Burning Brakes
Thread Starter
Thanks, probably overkill for most but I felt it wise insurance for a track-duty engine. Why trust an expensive forged engine to a $150.00 set of valves (I have been there already).
#13
Le Mans Master
And I'll wager my Ferrea hollow-stem valves are just as reliable at $37 per valve. Combined with the titanium retainers, the valvetrain is barely heavier than stock.
But good luck with that.
#15
http://forums.corvetteforum.com/c6-z...tte-forum.html
And there are others. Also, I called myself and was told the weight was 98g.
http://forums.corvetteforum.com/c6-p...et-of-8-a.html
http://forums.corvetteforum.com/c6-z...post1564051457
#16
Le Mans Master
I know what he meant but he made his statement backwards.
Now 64g x 57% = 100g, that math works......as YOU stated to which I agree
#17
Team Owner
Everything is a total combination, what is the spring life, diameter, and pressures? A SS valve can be reliable if the research is put in to properly set it up.
#18
Tech Contributor
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Well 'no' - the way he typed it if you read it, he's saying the Ti are 57% less than the SS which means 57% of 100 grams would make the Ti valve 43 grams and it's not according to the scales.
I know what he meant but he made his statement backwards.
Now 64g x 57% = 100g, that math works......as YOU stated to which I agree
I know what he meant but he made his statement backwards.
Now 64g x 57% = 100g, that math works......as YOU stated to which I agree
Bill
#19
Burning Brakes
Thread Starter
Basically, he should have just said 36% lighter. Round the 100.5 to 100 to make the math easy and you have the titanium valve showing 36 grams or 36% lighter than the stainless. Now if you want to calculate a little more accurately then you use the following formula Percent lighter = 1- (64/100.5) which makes them 36.3% lighter.
Bill
Bill
#20
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Bill