300ex cam

[honda965]

when it says core change does that mean i have to send it away or what?

[4TraxRider]

Means when you receive your aftermarket cam, you have to send them your stock one back. That's how it worked for me last time.

[bwamos]

Yea.. that means it's a "hardweld" cam. In other words.. they take a core cam (stocker), weld on more material and regrind it to a new shape.

They send you a cam.. you send them your cam as a base to make their next one.

[2muchquad]

When they say a 470 core charge,dont expect to get a $70 refund.I have never known anyone to get the full core charge back.You could send in a brand new cam for a refund and they will find something wrong with it.I just went with a sparks cam for $180 or so to my door and i didnt need a core.

[honda965]

where'd you get you sparks cam?

[250X_project]

www.sparksracing.com or 661-872-4343.

[honda965]

that cam says u need heavy duty valve springs and rockers...did u get them 2?

[2muchquad]

When i did my head iwent with a set of new oem springs i found on eturd and i just brought a new set of stock rockers from the local honda shop.Hardweld cams require hardened rockers mine is a billet cam.I wasnt worried about valve float at 10k rpm since im not a rever,i just went with new stock stuff,been fine all year;)

[250X_project]

Really? I'd just feel more secure with HD springs. most aftermarket cams call for them, but to each his own.

[2muchquad]

It depends on the application,if the lift isnt extreme then i wouldnt think twice,surely the companies want to cover their own azzes and plus sell more product.

[250X_project]

Yeah that's true. Makes good sense..

[2muchquad]

I'd just feel more secure with HD springs

I bet but so called aftermarket "HD springs" are repackaged stock ones.I wouldnt doubt it one bit.

[N300exJ]

I have titanium valve springs and retainers from kibblewhite in my 300ex.

[250X_project]

I wouldn't doubt some co.s do that, but you can easily see a difference in my KibbleWhhite springs. Also from what I remember they do actually compress harder.

[dork]

the biggest problems with stock springs are not enough seat pressure causing valve float/cupping the valves and coil bind. so unless you can check for coil bind at your cams lift, run the springs they recommend.