Lykins Motorsports 482FE Build, Chris Byrd

[RACERAL]

The oil pan you are using. What is the real amount it holds. I hear different things

[blykins]

Intake has been cut.....



Much better.

Sealed it up this morning.

Rockers are on and the valves ran.



Front end stuff bolted on...



Ran out of valve cover studs and forgot that I hadn't ordered breathers.....but here's what she'll look like.

[blykins]

I thought I was going to be sneaky and dyno Chris' engine yesterday, then surprise him with some pictures and a video last night.

We got her dyno'd yesterday; it made 588 hp @ 5700 and 620 lb-ft of torque. Sweet little engine, no external leaks....

I had walked outside to watch a pull from the outside and notice a few wisps of steam from the driver's side, so I went back in the dyno room and pulled the driver's side valve cover. Milkshake.

Got it home last night, pulled the intake and head off and one of the sleeves had dropped .011".

Now, one of the things we do to prep the aluminum blocks is to set the sleeves, which includes putting them in an oven, while clamping a head gasket and torque plate down to each deck. So, I'm not sure why that one dropped more, but the fact of it is that the engine will have to be pulled down to the bare block.

Good thing is that Chris' car will be in limbo until June, so we have some time.

[undy]

Just curious, was there glycol in the cooling system? If so, what effect, if any, does gycol have on bearing babbit. This would include short and long term.

The reason I ask is for several months I had a small intrusion of glycol into my oiling system on my Pond 482. It was not enough to make the oil milky, but enough to get some condensed froth in the valve covers. Fast forward 3 years and my oil pressure is the same as when the engine was new.

[blykins]

Dynos don't use antifreeze.

[undy]

Can you answer the second part of the question anyway?

[blykins]

Sorry, was trying to do 16 things at once....LOL

On long term, I think it would be bad for the bearings. Obviously, sometimes we get condensation under the valve covers from outside temperature changes, but a steady stream of water/antifreeze/gasoline can etch the bearings and not allow the oil to fully support the load.

[undy]

Thanks...

FWIW, when I bought the shortblock from Keith he didn't include proprietary head studs with the purchase. Knowing nothing about the "special" deep skirt head stud requirement I used ASRP head bolts. One of the head bolts pulled the threads from the block, unloading the head over a water port causing a small degree of seepage. I kept focusing my attention on a "potential" porous Dove tunnel wedge intake and finally found the true culprit. What a fiasco it was...

[redmt]

How tough are those sleeves to replace? Who stands good for it?

[blykins]

Not going to replace the sleeve, just deck the block.

Stands good for it? That's funny....

Nobody ever stands good for anything except the engine builder.

[redmt]

OK, if you deck the block that changes your piston to deck clearance. Are you going to do both sides and then trim the pistons a bit? What was the piston to deck clearance to start with?
We all know from bad experience that some manufacturers and machine shops won't stand good even when it's blatantly their fault.
It's not just the engine builder who takes it on the nose. It filters all the way up and down the chain.

[blykins]

Deck both sides, adjust with head gasket thickness.

[olddog]

I have read that on highly forced induction engines, they groove a circle, I think on the block deck, but I doubt it would matter if it went on the head, just outside the bore. Then they lay a wire in the circle. The head gasket then partially crushes the wire, but end up with a higher pressure point, making a better seal.

I'm sure there is a detail in material, and thickness of the wire, and the shape of the groove. I have had some experience with gear pumps where the aluminum gaskets on the end plates crush and that affects the side clearance on the gear set. In fact, I wanted to change this design to a wire in a grove, but the bean counters wouldn't spend the money to save a known cost. No risk in staying with the status quot. They could predict the cost. But I digressed....

I'm curious why some type of crush material, such as the groove and wire is not put on top of the sleeves, in a sleeved engine. It allows some forgiveness. I may be somewhat remembering a diesel tractor designed this way, but I cannot trust my memory.

Anyway it was a thought.

[Ace23]

Sounds like an awesome street engine. Kudos to the new owner and for the builder divulging the incident and standing behind his work.

[blykins]

Originally Posted by olddog

I have read that on highly forced induction engines, they groove a circle, I think on the block deck, but I doubt it would matter if it went on the head, just outside the bore. Then they lay a wire in the circle. The head gasket then partially crushes the wire, but end up with a higher pressure point, making a better seal.

I'm sure there is a detail in material, and thickness of the wire, and the shape of the groove. I have had some experience with gear pumps where the aluminum gaskets on the end plates crush and that affects the side clearance on the gear set. In fact, I wanted to change this design to a wire in a grove, but the bean counters wouldn't spend the money to save a known cost. No risk in staying with the status quot. They could predict the cost. But I digressed....

I'm curious why some type of crush material, such as the groove and wire is not put on top of the sleeves, in a sleeved engine. It allows some forgiveness. I may be somewhat remembering a diesel tractor designed this way, but I cannot trust my memory.

Anyway it was a thought.

The head gasket fire ring should make up for any discrepancy in deck/sleeve height. However, it just couldn't make up the difference here.

[Jac Mac]

Rather than using a head gasket and head to set sleeves I use a large solid steel bar thru the main bearing tunnels with an old diesel truck rod which has a 1" dia fine thread rod welded on its small end and a circle plate to fit sleeve od/id to pull down on each sleeve individually, this avoids stressing the block in head bolt area. Built this way back in 70/80 era when I was looking after some tour jet boat stuff that where possible always got driven home regardless of what was damaged in the engine, hence the need for sleeves to restore bore damage... tourists don't like swimming in alpine rivers!!