What is wrong with titanium valves for the street (daily driver)?

5spd GT · Oct 30, 2006

Just curious because I have been seeing this posted a lot.

I was thinking of doing a little lightning of my valvetrain just for a slight boost but have been reading about how not to use the titanium valves...

What are the thoughts on this?

Modular2v · Oct 30, 2006

depends on the heads, rpms, cam. . . . you dont want to put titanium valves in a naturally aspirated e7 headed car that has a e cam! I would just leave well enough alone with your afr 165s. . . You could do alot more to that would benifit you more than titanium valves

Snikt89GT · Oct 30, 2006

A lot of sport bikes have titanium valves and they run just fine to 16-17,000 RPM

Modular2v · Oct 30, 2006

Snikt89GT said:
A lot of sport bikes have titanium valves and they run just fine to 16-17,000 RPM

EXACTLY! You dont want to have waste your money on titanium valves if your going to be shifting at 5500 or 6000!

Blk91stang · Oct 30, 2006

Titanium valves would defiantly help out your drivetrain. You wouldn't need to worry about running as high spring pressures to keep the valves from floating also. Pretty sure they are more durable too. Couldn't really tell you much more than that...

Modular2v

Why would GM implement Ti Valves in the new LS7 motor if they redline under 7,000rpms?

Sportbikes have a VERY different drivetrain setup than our 5.0 pushrod engines do. Not a very good comparison at all.

Modular2v · Oct 30, 2006

Blk91stang said:
Titanium valves would defiantly help out your drivetrain. You wouldn't need to worry about running as high spring pressures to keep the valves from floating also. Pretty sure they are more durable too. Couldn't really tell you much more than that...

Modular2v

Why would GM implement Ti Valves in the new LS7 motor if they redline under 7,000rpms?

Sportbikes have a VERY different drivetrain setup than our 5.0 pushrod engines do. Not a very good comparison at all.

I was not the one who brought up the sports bike comparison! The point i was trying to get at is that it would be a COMPLETE waste of money in his case! He could spend his money better areas and gain greater improvements. As for the LS7. . . . when your spending 80,000dollars on a car it better come with every bell and whistle inside and out!

Sicarius428 · Oct 30, 2006

There is nothing wrong wit ti valves but you can spend the money elseware which you will notice more of a difference. I highly doubt you will notice a difference at all. There are many other bottlenecks before the valves become an issue to merrit ti valves.
Kevin

Blk91stang · Oct 30, 2006

Here's some good reading. Pretty much describes exactly what I wrote in a little more detail.

Probably not the best money spent on a street motor, but defiantly not a COMPLETE waste!!!!

http://www.928developments.com/titanium_valvetrain_analysis.htm

stangjunkie · Oct 30, 2006

titanium valves are great for any aplication even on the street but is it worth the money on something other than an all out race car... not really.... money can be spent very well elsewhere

5spd GT · Oct 31, 2006

I realize money could be spentelsewhere...but I don't know what.

I was just wanting a reason on why so many people I have seen say "don't do it on a street car"...

Less valvetrain weight will increase performance from idle on up...and it is probably pretty linear. I'm not saying I will feel it...I was just curious about them...

Keep it coming with other opinions...

How much does a complete TI setup cost? Just curious...

Oh, and a 75mm TB is a big waste of money on 302's but many do it anyways When money could be spent elsewhere...

z2o_what · Oct 31, 2006

5spd GT said:
Oh, and a 75mm TB is a big waste of money on 302's but many do it anyways When money could be spent elsewhere...

i agree 100%

5spd GT · Oct 31, 2006

bumpity

Sicarius428 · Oct 31, 2006

A complete ti setup will run you about 1500-2000 with retainers priced at summit. There are definate bennifits to them but for a 30 year old motor there are other areas where you can gain more for less money. This isn't a porche and the typical 302 street engine doesn't wind up the rpms where the ti valves really shine.
Kevin

bubba-dough · Oct 31, 2006

I know this isn't much help but just to throw in my $0.02, I don't think there is anything wrong with titanium valves on a street car but I think its a total waste on a street car or daily driver. I don't see the benefit in the dollar to hp ratio. Maybe if I had 20 grand under my hood or an $80,000 car or I was trying to suck every last fraction of power out of my car I would see it differently.

Modular2v · Oct 31, 2006

Sicarius428 said:
A complete ti setup will run you about 1500-2000 with retainers priced at summit. There are definate bennifits to them but for a 30 year old motor there are other areas where you can gain more for less money. This isn't a porche and the typical 302street engine doesn't wind up the rpms which the ti valves shine.
Kevin

Point, match, set!!!! Or whatever that tennis saying is! Like said, a COMPLETE waste on your typical/daily driven street car

Blk91stang · Oct 31, 2006

Modular2v said:
Point, match, set!!!! Or whatever that tennis saying is! Like said, a COMPLETE waste on your typical/daily driven street car

I surrender!!!!

Modular2v · Oct 31, 2006

Blk91stang said:
I surrender!!!!

LOL You know what i mean? Not a complete waste but its kinda like having a 450 hp mustang and just pussin it around town and doing nothing with it

Blk91stang · Oct 31, 2006

Modular2v said:
LOL You know what i mean? Not a complete waste but its kinda like having a 450 hp mustang and just pussin it around town and doing nothing with it

You sound like one of my friends!!!

That's all I pretty much do except for the 4-5 times I make it to the track during the summer and a couple full throttle pulls on the street when I have the room.

That's pretty funny you said that tho cause I should be making around 450rwhp and puss it around town. Looks like a set of titanium valves are next on my list!!!

Foxfan88 · Oct 31, 2006

no reason to get titanium valves for a street car. the stainless will do fine. IMO

5spd GT · Nov 1, 2006

Wow, that cost is about two times more than I expected...

What is wrong with titanium valves for the street (daily driver)?

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