In the direct injection world, I think Toyota has it figured out with their D4S technology, they use direct and port injection, valves stay clean and you still get the benefits of direct injection.. loving all the content! keep it coming..
Good onya dad. Letting us see what Andrew has learnt (from you) and also acknowledging the percentage of the work he does. It makes a lot of difference to an individual's self esteem. Well done both of you. Retired mechanic/machinist in Land Down Under.
You always go a step above. That's why I don't like production shops. Engine specs are like building codes, Barely good enough. Thank you for your time.
On your valve grinder machine....is the valve always going back to the same spot on the stone?...wouldn't the stone start getting worn from always being in the same spot?i know you flatten/sharpen the stone every once in awhile but that seems like an accelerated waste to me.your machine is similar to the one we replaced here but ours the valve rocked back and forth across the whole stone.boss went with a new rottler settup now to where the stone moves across the face of the valve.do you vacuum check after assembly?i know its hard to kinda show and explain every little tid-bit of the machining/building process,i enjoy your vids
why isn't the person running the valve grinder not moving the valve across the face of the stone in order to help keep the face of the grinding wheel true ,maybe I was taught wrong, keep up the good work love the channel you are the best 👌
Scotty also warned us about direct injection and the excess carbon build up. I've seen videos of ports being cleaned on car with walnut blasting media and vacuum.
I've been a heavy truck and diesel mechanic for 25+ years. I currently work at a volvo/mack dealership. The modern volvo/mack engines don't have the lower valve spring locators. I was surprised the first time that I noticed. I thought something was wrong.
I would never willingly buy a DI motor...but if for some reason ended up with one I'd install a simple water injection system on it to keep the valves clean. Years ago I ran turbo small blocks that needed the WI to stay alive and every time I tore one down it was spotlessly clean inside from the steam cleaning of the water. On a daily driver a couple hits of water injection every time you fill the gas would probably keep the valves clean enough for long service.
Direct Injection negates all of the detergents in gasoline that wash the stem side of the intakes on normal port injection or carburated engines. The manufacturers need to put a filter in the PCV system to filter the oil particles out of the vacuumed blowby gases.
You ain't kiddin about that GDI, my 4.3 has lost 2 mpg for the carbon in it and trying to get it out caused my rear cats to fail. Of course, the motor ain't got but 220k on it
Fuking awesome. What quality model starrett steel straightedge do you own. I hope you own a starrett straightedge that is at least accurate to 2 tenths per for foot. Thanks.
You sure have done a good job teaching Andrew! He now has a life career. That factory finish was sure crap. Do they all look that bad or was this of a one off? From what I see and I am by no means an expert, but direct injection sure seems to cause a lot of problems. I have seen quite a few videos of carbon buildup because of it.
When rebuilding a set of heads in good condition like these and not replacing the valves and guides, do the valves have to be placed back into the same guides that they were removed from?
What your experience and recommendations with eagle connecting rods? Quality etc. 5.3 turbo build street strip deal. 6.125 rod length L19 bolts. Thanks
I have a 05 Tahoe with 300,000 on it..still runs good..just loosing some oil pressure..needs bearings..I’ve done the pump and other stuff..but planning on replacing engine in future.
@@powellmachineinc so you don't end up with a "pocket"? in the area where the valve sat that will round the edges of the later ground valves. When you dress the stone, don't you notice the un-eveness going across the stone? You do dress the stone every time after a restart of the valve refacer motor?
In the direct injection world, I think Toyota has it figured out with their D4S technology, they use direct and port injection, valves stay clean and you still get the benefits of direct injection.. loving all the content! keep it coming..
Good onya dad. Letting us see what Andrew has learnt (from you) and also acknowledging the percentage of the work he does. It makes a lot of difference to an individual's self esteem. Well done both of you. Retired mechanic/machinist in Land Down Under.
Ty sir!!
In time your boys going to be as good as you are with everything you're teaching him appreciate the videos buddy
I sure hope so
You always go a step above. That's why I don't like production shops. Engine specs are like building codes, Barely good enough. Thank you for your time.
Tyvm
The factory finish is super rough on the l83 heads. Powell Machine doing what the factory should have done
Ty!
On your valve grinder machine....is the valve always going back to the same spot on the stone?...wouldn't the stone start getting worn from always being in the same spot?i know you flatten/sharpen the stone every once in awhile but that seems like an accelerated waste to me.your machine is similar to the one we replaced here but ours the valve rocked back and forth across the whole stone.boss went with a new rottler settup now to where the stone moves across the face of the valve.do you vacuum check after assembly?i know its hard to kinda show and explain every little tid-bit of the machining/building process,i enjoy your vids
why isn't the person running the valve grinder not moving the valve across the face of the stone in order to help keep the face of the grinding wheel true ,maybe I was taught wrong, keep up the good work love the channel you are the best 👌
Do we drag the stone across a cam,crankshaft, flywheel or anything else?
@powellmachineinc3179 if that was the case have you ever ground a valve that needed a stone that wide ,Thank You for the response
Talk better keep that Andrew fellow, dang he’s a fast worker !
Lol
Great video also a shoutout to Andrew!
💯, ty
Scotty also warned us about direct injection and the excess carbon build up. I've seen videos of ports being cleaned on car with walnut blasting media and vacuum.
Did ya'll see that feller runnin back and forth across the shop? That dude is fast!
Lol
I've been a heavy truck and diesel mechanic for 25+ years. I currently work at a volvo/mack dealership. The modern volvo/mack engines don't have the lower valve spring locators. I was surprised the first time that I noticed. I thought something was wrong.
I would never willingly buy a DI motor...but if for some reason ended up with one I'd install a simple water injection system on it to keep the valves clean. Years ago I ran turbo small blocks that needed the WI to stay alive and every time I tore one down it was spotlessly clean inside from the steam cleaning of the water. On a daily driver a couple hits of water injection every time you fill the gas would probably keep the valves clean enough for long service.
Yep
Great video as always and I noticed this set didnt need any shims.
Lol, definitely
In some fords they have a pre cleaner injector befor the valves on their direct injection. Btw nice video thanks for sharing.
Direct Injection negates all of the detergents in gasoline that wash the stem side of the intakes on normal port injection or carburated engines. The manufacturers need to put a filter in the PCV system to filter the oil particles out of the vacuumed blowby gases.
Absolutely
You ain't kiddin about that GDI, my 4.3 has lost 2 mpg for the carbon in it and trying to get it out caused my rear cats to fail. Of course, the motor ain't got but 220k on it
Lol
Good video 😊
Ty!
Fuking awesome. What quality model starrett steel straightedge do you own. I hope you own a starrett straightedge that is at least accurate to 2 tenths per for foot. Thanks.
Okay fine, I don't do this stuff any more, but I have never heard of seats chipping
You sure have done a good job teaching Andrew! He now has a life career.
That factory finish was sure crap. Do they all look that bad or was this of a one off?
From what I see and I am by no means an expert, but direct injection sure seems to cause a lot of problems. I have seen quite a few videos of carbon buildup because of it.
This one was actually pretty good, you should see late 80s sbc head's
I was watching him grind the valves and noticed he didn’t move the valve across the stone like most places I’ve seen before is there a reason?
Yes, this way is more accurate, we don't drag the stone across a crank,cam or flywheel, why a valve?
@@powellmachineinc Thank you for clarifying that, that makes a lot of sense.
Do the direct injection motors get better gas milage or do they have more power? Cheers.
Dan, I'm wondering if your head stand is very comfortable for you? I'm pretty short( 5" 7') and i liked to keep it up almost to chest height.
Yeah, I need to raise it
When rebuilding a set of heads in good condition like these and not replacing the valves and guides, do the valves have to be placed back into the same guides that they were removed from?
No
What your experience and recommendations with eagle connecting rods? Quality etc. 5.3 turbo build street strip deal. 6.125 rod length L19 bolts. Thanks
I won't use Eagle in anything we build it's the absolute cheapest
Can you show how to CC the heads ?
Yes, will do
Do you have engines for sale ( LS) or do you only rebuild the ones brought to you ? Thanks
We don't have anything ready but our business model is moving to that and away from building customer supplied units
I have a 05 Tahoe with 300,000 on it..still runs good..just loosing some oil pressure..needs bearings..I’ve done the pump and other stuff..but planning on replacing engine in future.
I thought when grinding valves the valve gets stroked passed the stone?
We find it's much less accurate, you don't stroke the stone when grinding a cam o, crank , valve seat or flywheel do you?
The valve shouldn't go past the edge of the stone, but it should be run across the full width of the stone.
@@oscaracme why?
@@powellmachineinc so you don't end up with a "pocket"? in the area where the valve sat that will round the edges of the later ground valves. When you dress the stone, don't you notice the un-eveness going across the stone? You do dress the stone every time after a restart of the valve refacer motor?
@@oscaracme we dress before every set, and we use the entire face as we go through, no pocket
Felpro has gone to shit.