Ips k2

From my understanding [and I am not a metalurgist], billet steel has higher tensile strength and higher fatigue strength than ductile iron. On a camshaft, a common problem for those made to lower standards is the lobes wearing down over time. Billet steel gives greater durability and ductility with less stress cracking than ductile iron. I think that billet steel can also be heat treated to a higher Rockwell number than ductile iron. There is a reason many companies use forged cranks rather than ductile iron cranks in high performance engines as not only is the reciprocating mass lower, but the ability to reduce stress fracturing is much greater. For those reasons, 8620 billets would be preferable.

Edit: This is so important when choosing cams. Cams that are outsourced to Asia or Turkey often use inferior metal in their cams to produce them more cheaply. Toruku come to mind. Even Skunk2 outsources their cams. Go-Power is one of the few that has their cams ground here in the US. Those produced in Japan like Toda and Jun would have higher grade metal and heat treating, thus the greater expense.

NitrousG35 said:

I have checked their site, but didn't see any for sale. I didn't know that they put in an order with IPS. BTW, there is no contact info on IPS other than an address. No phone number to call and the e-mail address is for dealers only. So, is it safe to assume that IPS is still in business? I got taken to task for posting info about IPS cams from a couple of people here who claim that they are not in business and scam people.

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if you really really want new ones, e-mail slow motion motorsports or pm nikos on k20a.org. he can get you a new set.

yes they are still in business. everything now is made to order. nothing is stocked. and they don't scam people. years ago when ron ran ips on his own he was having trouble keeping up with the demand and the wait time was long.


again, yes they are still in business. and again everything is made to order and nothing is stocked (at least this is the impression i'm getting).

ips products are now sold through dealers. it's not like in the past where you bought directly from ips.

as far as the material change, i don't know the specifics behind it. but i do know that the 8620 drove up the price heavily. and 8620 is all they use now for their cams.

the iron cores are just fine though.

i was lucky enough to find a used set of the iron cores on clubrsx a few months ago. used sets are out there. you just have to keep eyeing the classifieds often.