Larry

iTrader: (4)

I weighed a set of Comp Cams Titatium retainers for use with Comp Cams 26918 "918" springs. They weigh 110-112 grains. My factory retainers weigh 170-175 grains. That's over 50% weight savings.

Dave Carney

Yes, it is significant. I wasn't going to do them but then decided to go ahead in order to offset some of the extra weight I have from larger valves. Couldn't hurt for sure. It's more like 35% less weight though.....

Mike K.

Wow that is alot lighter.

2002 Trans Am

Wow you guys are hard core!!!!

I still have my back seats in

Larry

iTrader: (4)

I don't know what the weight difference of steel verses Titatium, perhaps 35%, but these 918 retainers are machined differently than the factory steel so design is probably playing a factor here in the over 50% reduction.

My gram scale is very accurate. It has to be as it's a powder measure scale for reloading ammunition. They have to be pretty accurate to avoid accidents.

The reason I put a range is because the retainers weigh differently one to the next.

2xLS1

iTrader: (25)

I weighed a Comp titanium retainer VS a stock retainer on a tripple beam scale and came up with titanium, 9 grams, stock, 11 grams.

Larry

iTrader: (4)

Whoops, I mean grains! I'll go correct that.

Fireball

iTrader: (21)

thats 4.1 grams difference then (using 1 grain = 0.06479891 grams)
that equates to a total of .145 lbs reduction

Dave Carney

Just to clarify, valve train weight is important in that it determines at what point/rpm your valves float, how stiff of a valve spring you have to run, and consequently how hard your valve smacks the seat and how fast your bearings wear..... I don't think anyone is buying titanium retainers to save on race weight


Larry, show me your math...(on how you get 50%) If the weight savings was half, then a titanium retainer would weigh half as much as a steel one. Alternatively, you could say, that a steel retainer weighs 50% more than a titanium retainer..

Larry

iTrader: (4)

Dang me! I divided with the wrong weight. I used 112 verses 170. About 35% is correct. Should have double checked my division when you first posted.

TexassTA

I use chrome moly retainers with my 918`s.They probably slow me down about a billionth of a sec.in the 1/4 mile.They cost about $60

MyLS1Hauls

iTrader: (2)

I'd like to see the weight of the chrome moly ones to see how much lighter they are than stock.

CamaroSS_2002

iTrader: (4)

I've got chrome-moly ones. I'd like to know how much they weigh as well... someone weigh them please!