Valve cover sealant

[testament11]

Minimal lang din yung nilagay nung mekaniko. Valve cover --> gasket ---> sealant on the edges.

Hindi na rin nya nilagyan ng sealant yung paligid nung makina. Pero ang na-notice ko, nasa bandang likod yung leak, bandang sa half moon.
Hmm.. mukhang mali ata yung sealant na pinagamit ko. I made him use the black one. Though I dont think na aabot naman ng > 200 deg C aabot yung temp ng makina, kaya pa rin dapat nung Pioneer RTV na itim?

Ok lang yun RTV na itim. Ang tanong lang dyan kasi ay kung lapat na lapat yun pagkakalagay niya ng sealant at kung malinis yun paglalagyan ng half moon. Check mo na rin yun bolts kung mahigpit talaga yun pagkaka-screw. Pag mahigpit naman, then double check nalang yun pagkakalagay ng mga gasket

[johnjoseph]

I used Sure Grease when I replace the valve head cover ng 4AFE ko, natunaw lang yun mga excess sa edges, more than a month na, wala naman oil leak.

[lowslowbenz]

Technically, one does not need RTV sealant when replacing a valve cover rubber gasket. The valve cover gasket supplied to most engine models is usually made of rubber. Rubber performs the sealing aspect here. Proper torque on the bolts/nuts is necessary so that the valve cover clamps down evenly on the gasket, creating a good seal.

That is the same as when replacing an oil filter, one does not use RTV sealant sa oil filter rubber o-ring di ba?

[Mile2]

Okay lang yung Pioneer Black Silicon, yan din naman ginamit ko sa valve cover ng Innova, no leaking almost 2 years na. Dapat lang talaga malinis yung surface at hindi pinatatagal ang pagbalik at tighthening and also observe curing time.

[Chinoi]

Kaya naglalagay ng sealant dahil yata pag luma na rubber seal ng valve cover at matigas na ito. Hindi na maganda ang sealing.

[Flipo]

Kaya naglalagay ng sealant dahil yata pag luma na rubber seal ng valve cover at matigas na ito. Hindi na maganda ang sealing.

tama at ganito nga yung nangyari sa engine ko, and I forget to mention yung curing time (1 hour sa akin), as mentioned by Mile2

[Chinoi]

Ang ginagawa ko naman ay after applying ng RTV sealant ay antay ko matuyo ng konti for 5 minutes bago ko ilagay ang valve cover. Para tumigas konti or kumapal baka sakaling tumibay. Takot na ako mag higpit todo ng mga bolt. Nag loose thread ako dati. Curing time 1 hour din.

[b0y37]

Try ko i-diy mamya yung pagreplace ng gasket. Bumili na rin ako ng mas higher temp (red) na pioneer rtv silicone. I'll take note on your suggestions. Thanks all.

[testament11]

Technically, one does not need RTV sealant when replacing a valve cover rubber gasket. The valve cover gasket supplied to most engine models is usually made of rubber. Rubber performs the sealing aspect here. Proper torque on the bolts/nuts is necessary so that the valve cover clamps down evenly on the gasket, creating a good seal.

That is the same as when replacing an oil filter, one does not use RTV sealant sa oil filter rubber o-ring di ba?

Yup. Yan din sabi ng erpats ko. Once na may oil, no need for silicone gasket dahil enough na daw ang o-ring to seal it completely. Kaso sa case ko, pinakita ko sa erpats ko yun service manual na naka-indicate, needed ang sealant. Sabi ng erpats ko eh bakit ganun daw. Sabi ko lang, sundin nalang yun service manual

[testament11]

Try ko i-diy mamya yung pagreplace ng gasket. Bumili na rin ako ng mas higher temp (red) na pioneer rtv silicone. I'll take note on your suggestions. Thanks all.

Sir, dapat original half moon at gasket bilhin mo ah.