mild web cams, do i REALLY need a $400 set of springs w/ titanium retainers?

[Blackcloud]

no I meant spring. with a turbo motor and stock cams, can i go up to  50/60# springs and still use stock retainers? or am I really taking a big chance of pulling the keepers through the stock aluminum

[Jay]

Probably if you keep an eye on them. Valve tip usually sits .050" below the retainer. If that measurement gets to be more, change them out.

The road race teams with the 1000s just change them out after each race.

[mountainmotor]

no I meant spring. with a turbo motor and stock cams, can i go up to  50/60# springs and still use stock retainers? or am I really taking a big chance of pulling the keepers through the stock aluminum

You'll be OK on a Busa because the open pressure with the stock cams will be down a little bit from less lift ,vs a hi-lift cam with more radical rates of lift. Always replace the collets with new during a re-fresh and look over the valve where the collets fit  . Naturally some will depend on time and wear of the spring tops and valves your starting with if used.

The 1st gen Busa generates wear on the exhaust side valve retainers a little earlier than the intake side especially where the shim fits ,but not limited to. Probably because of harmonics or other thats not necessary to stray into a topic about . Just keep an eye on them during maintenance .

To give an idea how long spring tops last in the road race world , Honda HRC recommended changing their CBR1000RR tops and collets and springs at 15000 kilometers of racing . Thats w/o differentiating between sprints or endurance .

[gnd111]

Not sure bu i think Kibblewhite makes all of them for the vendors...

Not hardly. They only make their own.

Jay

Not what i have been told by other Vendors but was not positive...

[tyboogie]

no I meant spring. with a turbo motor and stock cams, can i go up to  50/60# springs and still use stock retainers? or am I really taking a big chance of pulling the keepers through the stock aluminum

You'll be OK on a Busa because the open pressure with the stock cams will be down a little bit from less lift ,vs a hi-lift cam with more radical rates of lift. Always replace the collets with new during a re-fresh and look over the valve where the collets fit  . Naturally some will depend on time and wear of the spring tops and valves your starting with if used.

The 1st gen Busa generates wear on the exhaust side valve retainers a little earlier than the intake side especially where the shim fits ,but not limited to. Probably because of harmonics or other thats not necessary to stray into a topic about . Just keep an eye on them during maintenance .

To give an idea how long spring tops last in the road race world , Honda HRC recommended changing their CBR1000RR tops and collets and springs at 15000 kilometers of racing . Thats w/o differentiating between sprints or endurance .

What's a collet ?

[Busa Quick]

 The two halves of the collar "fitted to the center of a spring retainer" which fits around the stem of a valve and traps the spring against the cylinder head are known as split collets.

 
 

[tyboogie]

 The two halves of the collar "fitted to the center of a spring retainer" which fits around the stem of a valve and traps the spring against the cylinder head are known as split collets.

 
 

Thank you

[Jay]

 The two halves of the collar "fitted to the center of a spring retainer" which fits around the stem of a valve and traps the spring against the cylinder head are known as split collets.

 
 

Keepers??

[Blackcloud]

Hey Jay, I just ordered a set of your 65# springs.

[fvance]

Jay, thats what I always called them.

[mountainmotor]

I've called them valve locks , keepers and collets .

Suzuki calls them a - Cotter - and using that can help speed up the OEM phone order if the part number is not in hand , depending who's on the other end of the line .

[Busa Quick]

 The two halves of the collar "fitted to the center of a spring retainer" which fits around the stem of a valve and traps the spring against the cylinder head are known as split collets.

 
 

Keepers??

 I have called them keepers in the past too. I knew what a collet was but, I went to Wikipedia to make sure I could get a good definition that he could understand. Collets are also used in pulleys to help them mate with shafts.


Mark

[quizesilver]

dear broz
i saw the link on this
http://www.schnitzracingstore.com/catalogs/catalog.asp?prodid=1021910&showprevnext=1

70-752 EXH  Cam .378/.330 Exhaust Cam Only $366.00     
any idea what is this??
meaning it is a exhaust cam regrind to the profile??
or ?

i am lost.

advise is greatly appreciated. thanks

does tis cam need the spring also ?

[APE Dustin]

That cam is just a billet exhaust cam that has a lift of .330.  With that cam you shouldn't need different springs either.

[Jay]

Not sure bu i think Kibblewhite makes all of them for the vendors...

Not hardly. They only make their own.

Jay

Not what i have been told by other Vendors but was not positive...

You would know right away if you had one of ours and one of theirs sitting on the table in front of you. They are not even close.

[FASBUS]

What about carp heavy duty springs with 385 cams on a street/ race bike???  Is this reliable & longivity???

..........YES

[busadt]

so with web 395 web cams can i run just the hd springs or do i have to do the titanium retainers n all?