sitnlo62 wrote:
drmini in aust wrote:
RE83 needs good springs due to valve acceleration rate.
I'd use C-AEA526 springs, available from Minispares, Karcraft and elsewhere.
These are 180lb, which is plenty. They work well with an RE83 cam, both on smallbore and 1275 heads.
Pretty cheap to buy, and made from good material.
Kev,
At what height, length are these springs "C-AEA526" measuring 180 lb..
Thanks,
Dave
Perko, I have a spare set here that are new. Will put it on the tester and let you know. Pretty sure when I ran up a set they didn't get anywhere near 200lb. I am thinking they could only produce around 160lb from memory, but will have a look today.
There was a lot of variation in the spring pressure in the Minisport ones at full lift, if I recall the variation was around 10lb. Now 10lb may not sound like much but its enough to cause stress. If you guys don't believe me, next time your giving the missus a rev, tell her that by your calculations, at the compressed height you have noticed that her arse has increased by 10lb. Wait short while and then reassess the damage.
Kev, you may want to invest in a spring tester.How else would you calculate your installed height. Road engine, race engine they all should be built to the same quality. I have said it before but we should never believe what the retailers tell us. Interestingly enough I recently tested some Isky springs and had 2lb variation across all 8 springs, and a similar variation with a set of NOS Terrys springs. Seems like quality control isn't what it used to be.
Not sure I am a big fan of the steep ramp angles. Too much spring needed and as a result too much stress put on the valve train, cam followers (which seem to be suffering amongst people) and consequently the cam lobes for a roady. Have you got something else to use?
hehehe
