We know that the right combination of speed, quality and flexibility is what really counts in machining.Īt the same time, we pay careful attention to what you say. Our job is to look closely at what is needed on the market and make good products even better. As an ARNO customer, you benefit from a combination of experience and pioneering spirit that has been a cornerstone of our family-owned company's tradition since day one. For three generations, we have been developing tool systems based on outstanding quality, long tool life and process reliability. In a street/strip engine they would out live me.Do you have challenging machining tasks? We have outstanding solutions. Not bad really considering the absolute punishing they get. I change my isky springs after 4 seasons as I find they lose 5lb of seat pressure in that time. Cam my other mentor who does heaps of High Performance stuff now and when he worked for Bill Mann at Performance Wholesale said any serious stuff they always went Isky. Its a matter of trying stuff and seeing what works - being sensible in the process. Having said that we don't want to under spring. They only need to lift and return to the seat - not hammer a new seat each time they are closed. Why use a lighter spring - less mechanical effort = more power. but I am confident that you could run15-20lb lighter than most recommended spring pressures - provided you use quality springs. The springs have to suit the cam - ramp rate etc. I just couldn't run pressures that low so he said 'well go to 110 if it makes you feel better but 95 is plenty.' That is using Isky 235D springs with 584' lift on a Tighe 392C. PRO 250 - this is going to scare you and probably most others but I only run 105-110 on the seat and I should be running 95 according to my now departed mentor GT. Yes Sly and guess which cam profile they used in their Bathurst engines - Tighe 392C.

Multiple gooving solidcam