Re: Few Clevo Questions
[QUOTE=Trav 351]I've got a few questions guys. Please help me out.
-How have you guys taken off valve springs without removing the heads?
-Whats the average price for some heavy duty valve springs? (I've had quotes from $75-$135)
-If i was to put in a wilder cam, would it be advisable to replace the springs?
-Does anything else need replacing?
-Whats the name of a good book for rebuilding/performance modding the clevo?
I've still got some learning to do
.Trav.[/QUOTe Single valve springs can easily be replaced by using a mini spring compessor and doubles can too but remember this type of compressor only acts on the outside spring and will leave the inner spring uncompressed and therefore more difficult to install.When installing another cam that is larger than what you already have you need to take these things into consideration.Match your cam specs with the manufacturers recommended spring pressures.Secondly,with the stock head setup you will be able to install single springs with a damper only .If you choose a cam that requires double wound springs(not a flat inner)your spring seats and guides need machining down to accept different seals.Now this will render your retainers and valve locks useless as they will not work with double springs and in essence are crap anyhow.You now need to look at valves themselves.Stock valves have a nasty reputation for losing their heads at inoppurtune moments and i would have no hesitation at this stage to upgrade to say a 5000 Ferrea ar similar valve.You probably get the idea now.The more radical you go the more you need to step away from stock components.It all goes hand in hand.In a nutshell the stock setup can handle moderate lift cams with a single spring with a damper.I would prefer these over a heavier single spring as I have seen these break before .I have one clevo in the shed that dropped a valve due to a broken spring on a stock motor.The exhaust valve dropped into the cylinder,holed the piston,put a 4 inch split in the bore ,messed the head etc.Dual springs are better but as i said will require heads off.Look at getting a set of quality pushrods while you,re at it as the stockers have about as much strength as spaghetti.hope this helps.