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Waterproofing v8
Posted: Sun Jul 13, 2008 2:51 pm
by tuffer_2.4
Im trying to waterproof the 350 chev v8 i have in my 75 series im looking for ideas on how others have done it, how do the comp guys keep there petrols v8s going??
Posted: Sun Jul 13, 2008 4:57 pm
by little rusty
my holden 308 never had any troubles as the dizzy was at the back and stays quite dry, the leads are high and coil is on the back end of the intake manifold.
for the landrover disco V8 i have heard of rubber gloves around the dizzy cap/body join, bearing grease to seal it or an 'O' ring under the cap.
you could also place a weak sealant under the lead ends so they form a tight seal onto the coil/dizzy cap (they usually are tight enough though)
not a competitor so not sure what they are doing
Posted: Sun Jul 13, 2008 6:23 pm
by tlc75v8
I;ve got a holden v8 in a 75 i used silicon under the dizzi cap and a good spray of inox in lead ends and coil, never a problem now.
Posted: Sun Jul 13, 2008 7:18 pm
by brentz
hey mate have ya actually had it thru water yet?
as we have 1 in my old mans 45 and had it over the bonnet and it keeps going along neva misses or nothing in the water!
no water proofing besides a home made pvc snorkle lol
but hills are a different story
Posted: Mon Jul 14, 2008 6:28 pm
by jkv6
i went to a boat shop and got some stuff they use on big inboad motors to water proof sprays on dry's brown looks like crap but you can pressure wash the sucker and it will start after
Posted: Mon Jul 14, 2008 8:34 pm
by tuffer_2.4
havent had it through water yet im just doing some research when it comes out of the panel shop and when the motor goes back in.....
Posted: Tue Jul 15, 2008 10:28 am
by Guy
Di-electric grease is your friend. Use it on all your electrical connectors, this includes spark plugs, dizzy cap, relay connetors and anything that does not have a factory O ring. Quality plug leads with sealed boots are also very helpful.
Make up a splash guard for your electrical componets effected by water to keep the very high pressure water from hitting them. ( you hit a big enough puddle fast .. that water hits your motor at the same speed)
Silicone can actually "wick" water into things. Di-electric grease (non conductive silicone based grease that does not attack plastics) stays soft and so long as you keep it clean will reseal when you put it back together