baronsmith98

iTrader: (2)

Is it a good or bad idea to use rtv on the oil pump spacers when using a double roller chain? I put rtv on mine but now im paranoid some may have squeezed into the oil passage.

baronsmith98

iTrader: (2)

Going to take it back apart in a few days. Need peace of mind that it's not clogged. Freakin stupid mistake. Oh we'll better to catch it now than when it's in the truck.

baronsmith98

iTrader: (2)

Opinions on this?

dirty_old_chevy

I just did metal on metal, works fine. I definitely wouldn't use silicone.

Paul Bell

iTrader: (9)

If anything, spray the spacers with copper gasket stuff.

conan

iTrader: (5)

I put a very thin coat of red RTV on my spacer (both sides). Never had a problem, the last 3 times I did it. As long as you don't make it too thick you'll be fine.

JakeFusion

iTrader: (7)

Copper spray.

DietCoke

iTrader: (18)

metal to metal here. it doesnt have to be a perfect seal, a drip isnt going to hurt anything.

.boB

iTrader: (1)

I don't like metal to metal seals on a high pressure system. A lot of people get away with it, but I think you're losing volume and pressure. What's the point of using the best pump you can find, and then losing some of it's performance through a leaky seal?

I'd use a very light smear of silicone sealant. Does it really need it? IDK, but it helps me sleep at night.

c5mtl

iTrader: (3)

totally agree ...that's why I went with a Schumann's Dynamic modded oil pump...they machine the pump output and use an o ring to connect to block
check it out. they also mod the pickup so you don't need the o ring. it uses a flange with both bolts

2000RATA

The aluminum spacers are soft enough to compress like a gasket. You are sandwiching them between two machined flat surfaces. There is no gasket stock.
Why some of you guys think your smarter than the well paid engineer that designed them is beyond me.

dirty_old_chevy

Yes, mine were aluminum too and that's how I felt about it. They were soft.

.boB

iTrader: (1)

Because I don't have to worry about how much it costs for some guy on the assembly line to put a light smear of silicone on 100,000 oil pumps.

Probably the same reason GM doesn't hand port their oil pumps.

Gray86hatch

iTrader: (83)

Without a sealer or o ring they leak. Leaks are bad.

If properly torqued 18lbft is not enough to compress the alum and make it seal.

Tim

baronsmith98

iTrader: (2)

The thing with that is the port is not between the two bolts, it is off to the side so it does not sandwich as much as you think.

Anyways i took it apart tonight and my concerns were correct. Some of the rtv had squeezed into the galley. So glad i took it back apart and checked it thanks guys. I put it back on and put a VERY THIN coat of threadlock on the spacer.

Paul Bell

iTrader: (9)

Good you got off the silicone but bad you went and used threadlocker.

It's not made for that-it won't do anything for you.

You've got it all apart so get with the copper spray and do it again.

baronsmith98

iTrader: (2)

Threadlock is an anaerobic sealant so I think it will seal it enough

JakeFusion

iTrader: (7)

Copper spray is all you need. It is very tacky and creates a good seal. It won't get into the galley and won't break down. It's cheap too. Spray a thin coat on both sides.

2000RATA

Sorry guys but you are way over doing it. My stock motor (no sealant on oil pump) ran 40 psi oil hot idle. I now have a Mellings pump (HV) and bearing clearances far looser than stock and carry 55 psi hot idle with spacers for the double roller chain. Car makes over 1000 RWHP (twin turbo) now and has ran for over a year. 30+ dyno pulls. What ever little drop or 2 of oil per minute is lost is not an issue. But do what makes you sleep at night.

Gray86hatch

iTrader: (83)

Mine makes 750 with no turbo. Rpm puts a strain on the oiling system the power is not as big of a deal. I have 90 passes and 4000 miles and 10 pulls on two different engines 7500 rpm with no issues.

I have spent quite a bit of time working with Schumann on their pumps. They found leaks at the block and a few other things that were killing engines in the Texas mile that are allowing the engines to live.

The inlet side of the pump is also a area that can benefit from a couple mode.
There is some new bypass recovery system that looks like it will show gains.

Tim