Vents, Plugs, and Magnets.
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- เผยแพร่เมื่อ 5 ส.ค. 2024
- There are always many decisions to make on what to use and why we would do so. And a common choice is to go with the norm. But in this case, there seems to be a few schools of thought. Which one is right for you? We'll discuss the ins-and-outs in this video. It depends on some other factors.
the only stupid question is the one not asked!!! loved that
AND THANK YOU SIR I SEEM TO ALWAYS PICK UP ON SOMETHING NEW WHILE LISTENING TO OTHERS THANX
YOU ARE WELCOME!
grooving the lifter bores with the Comp Cam grooving tool will allow each lobe to receive a stream of oil. This should allow the holes to be plugged in the valley. I have a suggestion for number the rods. Instead of stamping, use an engraving pen. They can be tricky to use, definitely not great penmanship but it will not do any deformation of the cap or rod. It may be a stretch but it is what I now use. Not as legible for sure.
Shouldn't have to do that! Unless your lifter bores are so tight, that they do not allow oil to squirt down upon the lobes of the cam, if that's the case, then you have a whole other problem to begin with! The plugs are used to stop excess oil from falling down onto the crankshaft and rods to cut down on windage, and direct the oil flow to the front and rear of the block where it's directed back into the oil pan sump.
Sleeves when driven in with just .001 thousands sometimes push the adjacent cylinders and lifter bores out of round ! I used to do blocks years ago and found this out !
SOMETHING THAT I'VE BEEN DOING FOR YEARS IS PAINTING THE LIFTER VALLY WITH ( GE-GLYPTAL )
MAKES THE OIL GET BACK DOWN SOOOO MUCH FASTER
HARLEY DID IT ON ALL THE OLD MOTORS BACK IN THE DAY 1930'S N 1940'S
so how do you think it helps the oil? does it feel smoother to your hand?
do you also paint the heads for the same results? why not? why not the inside of the transmission and rear axle--they have cooling lubricants as well.
There's nothing wrong with sleeving a block if done correctly. The shop I worked at sleeved many blocks including racing blocks. In fact, Ernie Irvan won the '93 Daytona 500 with an engine we had put 8 sleeves in.
One of the "GREATS.!"
I've always heard that the sleeved cylinder is actually stronger than the factory cylinder, so if done correctly, there is nothing wrong with a sleeve or two or the whole damned thing sleeved.
Why is it that when something goes wrong with a small block Chevy that it's almost always the number 5 cylinder that is where the problem is? Something I've never understood when they come apart it's the #5 that is the problem
It's like BBC's ALWAYS starve for oil on the number 7 lifter , just a virtue of a production engine that was never designed to make more than 400hp
I ran a flat tapit cam in a 355. Made almost 400 HP at the plate
No use drying up the cam bore for any reason if you use a windage tray that's enough to scabange the small amount of extra oil from the assembly. A good pan is worth more power than a few screw in plugs.
THE COMMENT FROM RICHARD PETTY MAKE IT BETTER THAN THE WAY YOU FOUND OH SO TRU
I've sleeved many engine block, my self, but only when oversized options were exhausted or not avaliable. But sleeving one hole would technically be just fine as long as the block was sonic tested for thickness.
Plug the vents and order your lifters with that tiny little hole drilled in the bottom.
Also, I wanna know your school of thought on the 3/4" deck plugs like Moroso makes? (pn - MO37800) some say they go a long way to stiffening up the deck. Alot of circle track guys run them - You have to give the engine every chance you can I say, it's a production based engine designed in the 50s afterall
Stiffening the deck? Not a bad idea.
we used to do it with pipe plugs, but obviously not street engines.
I had the the stands on my sbc with roller
Whats the arrows for on the deck btw? machining guide?
th-cam.com/video/sGAauDUBj20/w-d-xo.html (Click on this link for meaning of arrows.) We were demonstrating, and the arrows were for that purpose.
Can you use the screen kit with the plug offs on a sbc daily driver car with a hyd roller camshaft?Thanks
It's a good idea to consult your machine shop.
Ive got to ask about why sleeving the block is such a no-no?
Ive had blocks done on marine engines where the salt-water has eaten into a bore way worse than freshwater can and havnt had any issues later on.
I'm glad you asked. Now, I've probably screwed this up in terms of understanding what I was told, but apparently we were going to end up with the two adjacent cylinders having flat spots. I think it was because we were going to sleeve and bore .030 over, but as I say, I'm still not sure. And in addition, we might not need to sleeve at all, which I hope is the case. Did you run into any flat spots in your travels when sleeving?
I have checked back a little bit and Ive had 12 marine engines sleeved over the last few years.
Out of the 12 engines 5 were sleeved on all 8 cylinders. The rest only had 3-4 sleeves done to repair water damage. No engine had any flat spots or had any bore issues at all. I suppose it could come down to the thickness of the sleeve used, the way the engine is bored to accept the sleeve, possible core shift in diff blocks. A marine engine is under more load than a vehicle engine, a boat engines load is the equivalent of you driving all day up a hill in top gear. so I would expect issues to arise faster but honestly havnt had any to date. I just rung my machinist here in NZ who has been doing our boring/sleeving for an easy 30plus years now and he said hes never heard of it. But thats not to say it cant/doesnt happen.
@@matui6983 Quite the testimonial. You've gone above and beyond the call of duty and for that we thank you, Sir. It's greatly appreciated.
I only subscribed yesterday after watching the first minute of the video but have watched others since and really enjoy seeing everything you cover in each one.
Agree with you 100%
Sleeving any block whether petrol or diesel has never resulted in any issues for us.
ALL THE INSIDE OF THE CAM COVER AND CAM CHAMBER PAINTED IN GLYPTAL 🤔❓️ THEY DID IT I DO IT I HAVE 5 1940'S HARLEYS AND ALL IF THEM STILL A GREAT DEAL OF THE ORIGINAL GLYPTAL STILL IN THE CAM CHEST SO GO FIGURE
I paint everything except for the obvious locations such as cylinders, bearing surfaces, main surfaces and gasket surfaces
Naturally, this after grinding the casting smooth.
Take lots of pictures
I get a kick out of all these so called engine builder and there engine mileage talk. AN ENGINE DOESN’T PUT ON ANY MILES !! An engine puts on hours. When it comes to an engine your city miles is probably 3 times as many hours as my rural hours in same compared miles. So MILES should never be a gauge of how long an engines lasts.