new valves??

[Junez]

Well. Bought those bronze valve guides from SI-valves. Head is now at machine shop and they will do radius valve seat to intake and 3-angle to exhaust. Dunno how things are there. But here they do radius valve angles really often and it dosnt cost any extra compared to 3 angle or 6 angle etc.

[Junez]

http://picasaweb.google.com/Jonex82/Kansi#5331646614659981442

Flow charts. There is 2 charts. Lower one is head with supertech valves +1mm exhaust, crappy angle job and little ported intake.

Better one has ported intake and exhaust, supertech valves with +1mm exhaust, better angle job and intake valve has diffrent kinda back cut angles.

[Skuce]

Has anyone ever cut in Intake valves into the Exhaust positions?

[FE3-323]

you would have to replace the valve seat. it might be possible. but i dont' know the benefits or consequences of it

[Hendrick]

Hi guys I'm from venezuela and I have a mazda protege year 98 it has an 1.6L engine B6-DOHC the same engine that's mx3 brought and I'm not really familiarized with the valve seat SO what do you recommend me for me engine actually I have what everybody calls standard 45 angle but I have a friend that told that 30 angle job would be great is that the same of 15/45/75 I think Is like that? Or is the other one?

[FE3-323]

15/45/75 is amazing!!!! tried & tested

[MATT91GT]

im looking at valves for my spare head. why are there different lengths offered? what should i pick?

[FE3-323]

earlier model ones. 90-97 anything after that has a change in valve stem height- due to solid lifters

[MATT91GT]

im still confused. the Supertech oversized valves are 1.3mm longer than the standard valves. would that cause a problem or would the HLA's adjust for that and be fine?

second question....the Supertech intake valves have a stem diameter of 5.96mm and the exhaust valves have a stem diameter of 5.94mm. From what i found for valve specs the intake valves stem diameter should be between 5.970-5.985mm and the exhaust valve stem diameter between 5.694-5.979mm. the Supertech valve stems are slightly smaller. Wouldn't this cause a problem with to much clearance between the stem and guide?

[SgtRauksauff]

sounds like you might not have the right valves, or they shipped you the wrong ones?

I got some OEM sized Supertechs and bronze guides for the 4AGE in my AE86, and love'em. Dunno what angles they used.

--sarge

[MATT91GT]

sarge i didnt buy any valves yet, i was just checking them out on supertechs site.

[wolfspiritky]

Is it just me or is Shades purple/blue hard to read???
Maybe the fact I use a laptop most of the time......I dunno but, most of the time I have to skip them. I'm sure I'm missing out on some useful info!!

[Chrisgtx]

yeah,the blue makes it real hard to read.

[FE3-323]

Change the Skin (background) & see if that helps

[irishkev90]

Or just highlight his posts, that's what I've been doing whenever I come across something from him.

Anyway, great info here.