head machine work question?

zachm611

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my machinest called today and said he did a 5 angle valve job on the intake and a 2 angle radius exhaust valve job? is this good?, all i asked for was a 3 angle valve job. his daughter recently had to be medevacd so he has taken a while to get to my stuff so i guess he is doing this to my head for free.. is it any better then a 3 angle or what? im still pretty new to cars so i dont know a whole lot. thanks in advance and im sorry i have terrible grammar.
 

KMinAF

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Never heard of a 5 angle, you should ask for some clairification on that one.
Make sure to check valve clearance before you install the engine.
 

tlo86

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a normal valve has three angles i assume 5 is for a more precise fit.
 

p5150

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5 angle jobs are supposed to flow better than 3 angle, but some head shops claim that the 3 angle job is actually more efficient. I really dont have the test data to back it up but you can check into it if you want. Either way, I dont think you will notice the difference.
 

p5150

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5 angle suck on exhausts but I suspect your guy knows that ;)
(seats end up to narrow and they receed badly)
I suppose thats why the TSRM recommends a 3 angle?