VW 5-Valve Cylinder Head Resurfacing

John Edwards @ Costa Mesa R&D Automotive Machine resurfaces a VW 1.8 turbo cylinder head on the Sunnen HBS-1300 and verifies surface finish with a profilometer. www.engine-machining.com (949) 631-6376

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Autos & Vehicles

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[GruppeB]

what's the shiny grey stuff on the areas in-between where the valves go?

[fiatnutz]

@GruppeB - Its a dry graphite spray we usae to coat the combustion chamber when we do a valve job.

[ringlol]

I wish you lived in my neighbourhood so you could resurface my block and head. Have you even done a Inline-5 ?

[fiatnutz]

@ringlol - I'm currently doing a performance version of a Volvo S60R engine.

[chr1s88blue]

did you put a coating on the head b4 you machined it ? i noticed after you resurfaced it the chamber or part were the valves sit was darker.

[fiatnutz]

@chr1s88blue - That;s because I sprayed the combustion chamber with a dry graphite film.

[fiatnutz]

@Blade4613 - two exhaust valves and three intake.

[Rennpanzer]

@headrebuilding Just the same, I think I'd take my head to the guy with the "fanci" equipment. I don't know of too many auto enthusiasts who'd be inclined to have their machine work done by someone who doesn't seem to be able to spell.

[douro20]

@vwgtirancher

I've never heard of a five-valve head with three exhaust valves. The general consensus is that all 5-valve heads have three intake valves.

[homenucleonic666]

great vid and very interesting process, thanks for sharing (I got a V70 T5 so I appreciate !)

[vwgtirancher]

@fiatnutz ok i see that now. i was confused because to me it would make more sense to have a 3rd exhaust valve to get the burnt gas out faster so more could come in. i thought that adding the turbo would already improve the intake and an extra exhaust would further improve the effects of the turbo a lot more than the extra intake valve would because a motor is only as powerful as it is efficient

[fiatnutz]

@vwgtirancher - There are 3 intake valves and 2 exhaust valves - take a look at the ports on the head.

[vwgtirancher]

@fiatnutz its 3 exhaust and 2 intake it helps the turbo more that way

[jcotteri]

Great video mate. Thanks!