The TI retainers should move harmonics to a higher rpm range, but supposedly they do wear faster. May be negligible in boat use. There are lighter weight steel retainers out there.

I remember the Jump too S30. Just under $100 and then boom, $200 or so. Guess the Chinese don't deal with titanium. LOL.

I guess my harmonics are at a minimum,,my retainers look great,almost no wear in them,,but then again,,I have almost no spring pressure compared to most(150) and on of those pesky off the shelf isky cam.

Doh, I was saying negligible in the sense of boat use is a lot less than car use.

Anything to take weight out of a BBC valve train (especially) within reason usually pays off, especially when going to higher 5k range and above.

Edit in: even though sbc's don't have this issue near as much with their inline valves, straighter pushrod angles, and smaller valves and lighter springs, GM going to even a smaller stem valves, hollow and sodium filled valves, beehives - talking small retainers here too - has really upped the rpm with hyd roller cams. Obviously we can not use this small valve , lighter weight valve, and tiny retainer....but it just re-amplifies what one is up against with the BBC.

last night I contracted the aliens that landed in my back yard to make me new valves and seats,,can't tell you the new material,,said they kill some cows. but they're really light,,next up,,super low duration w/ super high lift cams.

I sent them over. Did they tell you ?

The new trend in weight savings now is smaller diameter springs small diameter retainers with titanium locks. The weight savings is kinda incredible when you add it all up.

yup

In reference to young guys and leaded fuel, I worked at a full service (yikes!) gas station back in the early 80's when leaded fuel was still available right next to unleaded. I can't tell you how many gas tank filler necks I modified to accept the larger leaded fuel pump nozzles and how many "test tubes" (anyone remember that name?) I installed. No one wanted to run unleaded even in cars designated for "Unleaded Fuel Only".

Yes, does that make me old too We called them test pipes here.

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