Sump: 2 Silastic or not 2 Silastic

[Setanta]

New sump, new gasket, good to go.

Usually engine building I use a smear of silastic around both sides of the gasket. When I picked it up, I was advised not to by a Honda mechanic.

Anyone able to shed any light?

[Dxs]

lucky bastard..

by silastic you mean RTV silicone sealant?
Well the workshop manuals alway say to put sealant on a few parts of the block when replacing the gasket.

I have had heaps of troubles with my gasket.. numerous gaskets replaced and many different methods tried and there is still a leak.

So did u just get a new gasket and sump.. clean the surfaces and torque it down? Did the gasket squish out?

I have been advised by a friend that i should use this aircraft sealant stuff that is like treacal (sp?) on the sump and gasket

:/

[Dxs]

might be worth a read also:
http://www.ozhonda.com/forum/showthread.php?t=37870&page=2

[Jomsy]

got to your local auto shop and get the "ultra grey" , its oil/fuel proof, its the same stuff the oem use, a light smear will be better then none at all in the long run

[VT3C]

there's an aftermarket product called 'HONDABOND' which I think has a number of applications when re-building the engine including the one you've mentioned.

Personally, unless the HONDA manual says so, I wouldnt use any extra goop on any gaskets / machined surfaces as it may effect the seal - HONDAS are deisgned with pretty tight tolerances unlike many other motor manufacturers.. but you're pretty experienced with this already..

[[[d a n n y]]]

pete
how much did u get a new sump for?

[saxman]

there's an aftermarket product called 'HONDABOND' which I think has a number of applications when re-building the engine including the one you've mentioned.

Personally, unless the HONDA manual says so, I wouldnt use any extra goop on any gaskets / machined surfaces as it may effect the seal - HONDAS are deisgned with pretty tight tolerances unlike many other motor manufacturers.. but you're pretty experienced with this already..

hondabond = oem product, not aftermarket

[Setanta]

]']pete
how much did u get a new sump for?
180 off a friend who had bought it but not used it. Lucky :)

[Dxs]

Setanta.. how did it all end up going and what method did you use??

[Setanta]

Replacement sump was the wrong one (think it was a B18 one and too deep). Just picked up one from a wreckers and am fighting to get all the sealant cleaned off it. Will let you know how it went in 48 hours. Looking at the old gasket, the holes do stretch under pressure, but into an oval shape.

Currently my biggest worry is that my Torque Wrench starts at 10 ft/lbs - going to try backing it off to just below that.

[Setanta]

Update: looking good so far. Busted knuckles from pulling the radiator/exhaust. Cleanliness was the big factor - 2 days getting every spot of old sealant off the surfaces and making sure it was 100% clean. Alcohol to do a final clean and then polished it off with a clean rag. liberal smear of sealant on the block, particularly in the corners,then wiped off all excess. Likewise the sump and then put the gasket donw on the sump aligning the studs to the gasket holes. took 10 min with a flat, clean piece of steel to make sure it squashed down cleanly. Mated the sump to the block slowly, using a trolley jack to get it in position. Bolted down finger tight followed by torque wrenching in a diagonal clockwise manner.

Bolted up the exhaust and radiator etc and walked away for 30 hours. Filled the sump and let it idle for 30 min, checking for leaks. Took it for a drive, sedate pace - all good so far. Sump is clean as is the block around it.

[Spunkymonkey]

Cool...sounds great Pete :)