Too Much Oil In Valve Cover after HOOVER MOD????

[texastomeh]

Guys,

I seem to be having a problem with the 1&2 sparkplugs fouling and causing misfires on only the right side of my 1776.

After thoroughly checking out other possibilities, I believe the issue is caused by excessive oil in the valve cover as a result of potential "over zealousness" on my part while incorporating the HOOVER MOD . The oil seems to be getting sucked through the valve guides, even though they have guide seals on them.

Does anyone have any "easy(?)" recommendations as to how to reduce the "effectiveness' (i.e. oil flow to the head) of the HOOVER MOD as something to try?

Thanx in advance for your advice and comments!!

Tom
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A new engine build won't solve ALL of life's problems - only those THAT REALLY MATTER!!!

GETTING old was GREAT - BEING old SUCKS!!

Too bad that the guys that know how to solve all of the WORLD's problems are too busy working on old Volkswagens!!

[Alstrup]

IF! that is where the oil comes in, you most likely have too little crank case breathing capacity, i.e too much blow by
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[oprn]

Where did you find valve stem seals and how did you install them?

Interesting that you think it is the Hoover mods. Do you have a 30mm oil pump? Are you running heavy cold oil that is having a hard time getting back down to the crankcase?

Just some thoughts...
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[rayjay]

Pull the intake manifold and see if oil is puddling in the intake port.

[BFB]

I had similar oil issues after hoover modding an engine although I wasn't fouling plugs. most people didnt believe it and wanted to blame oil in the intake ports on something else but there wasn't anything else to get it there and after my fix the oil wasn't in the ports anymore either.
what I did was drill & tap the heads for 1/2" npt just below the valves , then run a drain line from there to the block, which has to be above the oil line otherwise your drain line will have oil in it as high as the oil level in the case. I drilled & tapped the case while it was together , just used copious amount of bearing grease and went really slow and cleaned & regreased as went.
more than likely its coming from over grooving the lifters so replacing them is an alternative too.
after that, I dont do all the hoover mods anymore especially not the lifter mod, dont need more oil going into the heads than what can drain back out and even unmodded vw heads fill quite a bit so what's the point.
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[Alstrup]

I do the Hoover mods quite extensively on alm ost anything except dragrace (which I normally dont build anymore) I have NEVER had this issue, not even on sustained 5000 rpm Autobahn cruises.
But, as I wrote above, you need sufficient crank case ventilation, or maybe even a PCV system. (I never had the need for that, but its an option

PS. Do you happen to have vented valve covers? If yes, block them and let the slight overpressure help push the oil back in the case again.
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[airschooled]

If the Hoover mods caused too much oil on the 1/2 side, then wouldn’t every engine VW ever have too much oil on the 3/4 side?

Robbie
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[Alstrup]

[Chip]

[BFB]

[modok]

When people say Hoover mods I don't know what they did, I doubt they used exactly the same parts and procedures he did. Just tell us what you did , with what parts.

And it's probably unrelated anyway.
Possibly a groove in valve guide bore, guide loose in head, guide worn. Ect

[BFB]

Maybe you should do some research on hoover mods then youd know what it is and what they did and that there are no parts to buy & use
_________________
"how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't.

[modok]

no, no, I'm just being nice.
You and everybody else is just too retarded to ever figure out that the amount of FLOW that flows through a thing has to do with the size of the passages and the pressure.
This is true of carburetors and oil systems and valve guides and leaks and breathers and intake systems and exhaust systems and how engines work entirely.

But the sooner you start working on the problem then the sooner it might be solved.

The number of grooves in a lifter may or may not matter, it would depend on the size of the grooves if that was a restriction or not. Was the restriction in the pushrod? was it in the valve adjuster? was it the rocker? Where was the restriction?
The whole point of Mr. Hoovers most famous blog post of many, was him teaching you how to think for yourself, and FIND the restriction, not cut grooves in things with no understanding of why.

I know that ALL engines have some type of metering scheme to adjust the amount of oil to the heads, and it may be done many different ways, but some people don't know that.

And for a long time I didn't understand that people were taking his one blog post as actual universal instructions.
So now I assume nothing.
And I wasn't talking to you BFB, but now I am.

[oprn]

I am one of those individuals that blindly followed Mr. Hoover's "universal" instructions to the letter on my last engine build. I have not seen any excessive oil consumption, flooding of the valve covers, blackened spark plugs or lowered oil pressure. That is the first engine I have done it on and there has been no downside.

Unless the OP did something drastically different than Mr. Hoover outlined then his black oily plugs are from something else.
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Our cars get old, we get old but driving an old VW never gets old!

[BFB]

[vwracerdave]

This is the reason I haven't been around the last few months. Too many Karens. I took a good long look in the mirror and saw a Karen. There are a few more other folks around here that need to look into the mirror and see if Karen is there.
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1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

[vwracerdave]

Here is my guess on the fouled plug problem. If you have read several of the OP's posts he always overthinks and overbuilds everything. My guess is he built his 1776 for his kit car and he simply doesn't have enough hard miles on it to properly break-in the rings and has blow-by. My guess is he needs to run his motor hard and fast and get the rings seated in. Maybe he runs the wrong heat range plug causing them to foul out. Maybe his carbs are not jetted correctly causing the plugs to foul out. My smell test says it's not anything to do with the Hoover mods.
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2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

[raygreenwood]

[58 Plastic Tub]

[Alstrup]