Moderators: BOBLOOK, AE25, pufito18
assume you mean Supertech?Toyota1515 wrote:I just curious here why spending all this effort in the head and leaving the stock valves instead of installing Stainless ones?
Toyota1515 wrote:No i didnt mean Supertech, i mean any Stainless Steel valves, that will last more and dont crap on your expensive head work and cost you catastrophic and unrepairable damage just cuz you cheap out in such an important component of the head, i have seen OEM 4age valve that broke and do all the before mentioned, take it as an advise,
I wasn't sure how much... after all... the clients valves were not going to be used, I had picked through my old valves for a decent set. So "new" valves, and had them ground, along with the 3 angle grind.... after all of that....oldeskewltoy wrote:So with the ports nearly finished... I proceed to the chamber work. Basic, or minimum deshrouding to start....
... but more will be required...
neither of those valves will work without MASSIVE work. The valves you show are O/S valves, stock 4AG valves are intake 30.5, not 32, and the exhaust valve is 25.5, not 27.5. So to use those, or any other O/S valve the work required is over $1000, and closer to $2000. All 16 valve seats need to be removed, then the head needs to be over-bored to accommodate new hardened seats, then the seats need to be machined to size, then the head needs to be MASSIVELY ported - see OST-019.Toyota1515 wrote:manley i guess, By the way Supertech are not stainless
http://experformance.net/i-217065.aspx
http://www.summitracing.com/int/parts/m ... /overview/
LOL, bro i just show you examples, i am sure Manley got STOCK size valves, you just need to call em and ask buddy, easy as that. sorry if i wasnt specific to the point bro!oldeskewltoy wrote:
neither of those valves will work without MASSIVE work. The valves you show are O/S valves, stock 4AG valves are intake 30.5, not 32, and the exhaust valve is 25.5, not 27.5. So to use those, or any other O/S valve the work required is over $1000, and closer to $2000. All 16 valve seats need to be removed, then the head needs to be over-bored to accommodate new hardened seats, then the seats need to be machined to size, then the head needs to be MASSIVELY ported - see OST-019.
Allowing for enough margin, I've never had a 4AG valve fail, and the only aftermarket std valve I know of is Supertechs..... (btw I know the Supertech isn't stainless... I wasn't sure of what you knew about standard size 4AG valves.....)
