Hi Randy,
Thanks to you and the other Brickies for the comments. I've been chasing info.
I smell a rat in the conflicting info to install the B230FT water pump.
My new Hepu/OEM water pump has several defects from machining and mishandling after machining and possibly Hepu forgot to machine the upper seal surfaces
where the upper round eslatomer gasket (AKA Mushroom gasket) mates to the pump.
I have a series of photo's to post but only get an error message.
Are the OEM pumps machined at the upper round gasket mating surface?
This Hepu is not machined there, It has an ugly rough surface including two deep dents in the aluminum casting.
I want to e-mail a photo to you.
Do you have photo's of the failed upper gasket?
The round gaskets are made out of elastomer compounds,
https://en.wikipedia.org/wiki/Elastomer
Find out more than you ever want to know about this assortment of synthetic rubber compounds.
Some chemicals attack elastomer compounds. So maybe you need a "sensor safe"
sealant, or certainly if you use sealant it has to be compatible with the gasket material.
Hepu indicates some RTV sealant needs to cure in air maybe an hour before installing?
RTV cures in air.
Hepu's secret flyer "The correct way to apply sealants"
referred to in their installation directions is missing at Hepu's website.
Hepu's Tech support boffin and his Technical advisor both ignore e-mails.
FCP Euro couldn't get that info either even after I suggested that Scott should take those mute Hupu dudes on a holiday to Guantanamo Bay to be waterboarded until they cough up their German Technical Secrets.
Stephanie FCP tech did send All Data installation directions, but applying or not applying sealants, and which sealant to use and how is missing.
It's also missing in the Haynes 940 service manual where they make a passing reference to clean the old sealant off the engine mating surfaces.
Meyle tech support was very good and sent some Alldata info saying to use only "non volative oxygen sensor safe RTV" on the big composite gasket. Another Alldata page saying No RTV on the O-rings, (Are those two round gaskets O-rings?)
You can't put too much sealant on Pump gaskets since you must not get RTV in the coolant. It can destroy the main shaft bearing seal and then the pump will fail. (Photos at Gates website) There's one landmine to avoid.
Permatex brags about their "Water Pump & Thermostat Housing Gasket maker" # 22071 RTV with the highest resistance to water and Ethyl Glycol. Permatex didn't mention if it attacks elastomer compound gaskets. Maybe they are thinking only about the big composite gasket material where the pump mates to the block?
I couldn't find a phone number to chat with a Permatex genius.
I did see a warning in my surfing about using power tools to clean gasket mating surfaces. Definitely NOT on the head surfaces. More info about that on request.
Bill
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