ultra

Hi guys

I bought a burton power "CV211" manganese bronze valve guides for my CVH engine.
A local tuning workshop ask me for valve to guide clearance for intake and exhaust valves.
Could you tell me correct valves to guides clearance should be?
And other question: Do I need to use valves with chrome stems for this guides, or I can use default valves?

Thank you!

ultra

Hi again.
There is Burton Power anwer:
"...the guide to valve clearence is 0.0015" to 0.002"..."
"... the clearences for intake and exhaust are the same..."

tabetha

A machine shop/engine place should know this basic info, maybe you should use someone else ?
tabetha

ultra

Its hard to find another one in Ukraine

tabetha

Sorry Ultra didn't spot the address, we are spoilt a bit in this country for car stuff.
tabetha

ultra

anyways

I asked them to do BurtonPowers's clearences and tomorrow (I hope) I'll take my head home

Thanks!

chaffe

i would go with burton powers clearance of .04 to .05mm mate

tabetha

0.4 to 0.5mm, ultra is talking about valve to GUIDE clearance here, cvh as his are hydraulic tappets so no normal gap between rocker and cam.
tabetha

Chip

iTrader: (3)

Tabetha, he said 0.04mm not 0.4mm

chaffe

yeah thought i would qoute it in metric, as imperial is not very well known over there mate

ultra

Guys, I don't catch your meanings...

So which valve to valve guide clearence is right?
0.4 mm or 0.04 mm?

chaffe

0.04mm to 0.05mm is correct mate. thats the tolerance the machinist will work to.
.4mm or nearly half a mm is never going to work lol

Chip

iTrader: (3)

Ignore tabethas post with the nonsense numbers in where he misread it or something, the rest of the thread is useful though.

ultra

Thank you!

chaffe

i think alchohol was maybe involved tabetha lol?

Chip

iTrader: (3)

Tabetha occasionally comes out with something useful, but it tends to be a low enough percentage of the time that a general policy of ignoring everything he says is probably a safe bet generally speaking.
Im sure he does try though.