Re: 302 Chevrolet Engine Build
 

Thank you

I bored the block, had to go 4.034 to get it to clean up. Next I will deburr the deck and bottom of the bores, and relieve the bottom of the bores for honing over stroke, from there it will be honed to 4.040. The balancing will be done after the block is done.

Re: 302 Chevrolet Engine Build
 

That disparity you mentioned on the dimensions regarding the block decks isn't unheard of. Many moons ago, I built a 283 for a car I had. The block line honed fairly well, but I had .050" deck height on the right head. It was consistent from cylinder #2 through cylinder #8. I brought it down to be correct with whatever steel head gasket we all used at the time.The left deck was .050" for cylinder # 1,but it rapidly shrank as I measured back until i had .025" on the outer wall of cylinder #7, but the portion of the deck closest to the lifter valley at cylinder#7 had only about .022". That head obviously slanted downhill front to rear, and was twisted as well. The good thing about '60's blocks is that they are all real seasoned by now and aren't going to move any more now. I got hold of an original unrebuilt block wiith factory stampings visible on the right front of the deck,and it had a final assembly date of about May the 15th of 1967. The cast date on the rear of the block indicated it was cast May 12. Hardly a seasoned casting.I didn't rebuild it, it got sold or traded off, but I wonder how accurate the machining at the engine plant could have been,especially when it hardly cooled off from the foundry. Your attention to detail on this project is refreshing to see!

Re: 302 Chevrolet Engine Build
 

I did block and head machine work for years. Milled blocks square on a Storm Vulcan 85B and used a Kwik Way FN boring bar directly on the block decks. That was pretty common going back many years before better equipment and fixturing came along. I counterbored the bottom of any blocks that had webbing that would interfere with honing stones. I offset the boring bar and used it to machine the web back from the cylinder bore at the bottom. Milling stock blocks I often found them twisted side to side. Right front up a little, left front down a little and opposite at the rear of the block. I would be happy as a pig in you know what if I had those machines and spent all day everyday doing that work as I did 30 years ago. Milled and bore blocks at the same time. Radio playing and smokin a cig . Lol Throw in some heads and rods and just about everything else done in an engine shop. The work I loved to do most. Machine and build engines.

Re: 302 Chevrolet Engine Build
 

The crank has been ground .010.010 and indexed with the stroke set at 3.00. Balancing next.

Re: 302 Chevrolet Engine Build
 

I'm always willing to learn. What was the reason to have the honing oil shut of on #2,3,4 mains when line honing the block when the oil pump was on # 5 main on post 17? How much did it move the crank center line toward the cam centerline?

Thanks for sharing on such a classic build.

Re: 302 Chevrolet Engine Build
 

The number 2 3 4 mains hone faster than the number 1 and 5, I turned the oil off to break the hone stones down more on the middle of the mandrel. Not sure on how much the center line was moved, but I cut the caps .003 on 1 and 5 and .005 on the 2 3 4 main caps.

Re: 302 Chevrolet Engine Build
 

Back in the days of my vocational training, we bored several blocks in our auto shop class using a boring bar that sat on the deck and affixed itself directly to the block. Now, realizing how inaccurate the deck surfaces are on most blocks, and that the further you move away from the point of origin of a machining operation the further away from true center you get, how far off those cylinders must have been when finished from the true blueprint specs of those engines. The Sunnen CK-10 machines that located the block on the main saddles and finished the cylinders a true 90 degrees from them ushered in a new era of accuracy that we never previously knew. Once the main bearing saddles are perfectly straightened out and the cylinder bores are round, square, and properly located, and the deck is exactly parallel to the main bearing centerlines, then the engine block can be assumed to be accurate enough to proceed with. Ever notice when you get your block,crank, cam and pistons and rods back from a great machinist, how nicely they seem to go together and everything turns smoothly and they just feel like a good engine. If the block isn't right, nothing else around it will be,either.

Re: 302 Chevrolet Engine Build
 

Mike a truing sleeve will help straighten the mandrel.

Re: 302 Chevrolet Engine Build
 

I turn the block 180 degrees to keep the mandrel tru. I adjust oil flow to slow down the honing rate. The 3 center mains can not be over stroked, they hone faster than 1 and 2 mains. I do use a truing sleeve on the rod hone mandrels, but I've never seen a truing sleeve for a line hone mandrel, but I just started machining. Could you post up an image of a "Line hone mandrel truing sleeve" Thanks

Re: 302 Chevrolet Engine Build
 

It looks like a truing sleeve for the pin mandrel only bigger ID and longer made out of honed tubing. I like the oil holes 120* apart, drill the holes so they line up with oil feed holes on the machine. You will see the ware pattern on the shoes start to "come in"

Re: 302 Chevrolet Engine Build
 

Larry, Do you have this type of equipment at your place? I know you do a lot of your own work.

Re: 302 Chevrolet Engine Build
 

Yes I have owned a Diesel machine shop. Built toy airplane engines with Harry Paul Tune and burnt Drums of nitro every toy airplane season. If we wanted to go fast with the toy airplanes, we would use laboratory grade nitro, its clear without yellow die.

Re: 302 Chevrolet Engine Build
 

Here you go Mike LOL

Re: 302 Chevrolet Engine Build
 

I got the pistons last week, Icon .040 -12.7 CC dome, they came in at 712 grams with pin after some work.

Re: 302 Chevrolet Engine Build
 

I have a feeling you've had a pretty good teacher during your life.;)

Re: 302 Chevrolet Engine Build
 

It is very encouraging to see a person of Mike's age using his head and hands to do something that he is interested in. He not only has had good instruction but is obviously receptive to learning all he can. Not easily found in young workers today. I see a bright future ahead for you Mike.

Re: 302 Chevrolet Engine Build
 

The finished piston. Some more pictures of sizing the wrist pins, size was set at .0008. I have to drill and tap the crank snout next and have the crank flange cut, then I can balance the assembly. My dad will hone the block then I can assemble the short block.

Re: 302 Chevrolet Engine Build
 

I got this for my Birthday, the 302 will go in this until I build a 427 for F/SA.

Re: 302 Chevrolet Engine Build
 

You'r going to need a bigger trailer!

Re: 302 Chevrolet Engine Build
 

Safety glasses on??

Re: 302 Chevrolet Engine Build
 

I got some parts for Christmas, so I plan on getting the short block together next week. I mounted my pistons up, and drilled the crank snout for the balancer bolt, a friend of mine faced the crankshaft flange for me. I balanced the assembly today, it needed 4 grams on the front and 9 grams on the rear, both on the crank pin side. My Dad will hone the block for me and I can start assembly.

Re: 302 Chevrolet Engine Build
 

Block is honed and final cleaned, should have a finished short block tomorrow.

Re: 302 Chevrolet Engine Build
 

I got the short block assembled, took a while to get the bearing clearance set. I was looking for .0025 on the mains, and the number 2 main was coming in at .0023, I was able to sand the back of bearing, really just cleaned it up and got the .0025 I was looking for, the rest went together good with no problems, I had .0022 on the rods. The picture of the main bearings # 2 sanded, the number 1 as produced. Now the work will start, the heads are next, thats going to take some time.

Re: 302 Chevrolet Engine Build
 

What a nice immaculate clean place to work! I'm impressed with the quality of detail put into this project! Keep doing things right as you go along.

Re: 302 Chevrolet Engine Build
 

Thank you, I will do my best.

Re: 302 Chevrolet Engine Build
 

I have a feeling these Jones Boys won't be a secret too much longer ;-)..

Re: 302 Chevrolet Engine Build
 

Very impressive young man!

Re: 302 Chevrolet Engine Build
 

Things look great, keep it up!

When I looked that young, it was a few years before G I Joe was invented.

Re: 302 Chevrolet Engine Build
 

G I joe with the kung foo grip !

Re: 302 Chevrolet Engine Build
 

Got started on the heads a while back, machined for screw in studs and guide plates. Installed the guides and honed them to size, and cut for seals. I then started on the intakes by unshrouding the chambers and hogging the bowls for the 2.020 seat. I then cut the intake seat and set height. The exhaust seats were next with the height set.

Re: 302 Chevrolet Engine Build
 

Mike,
What's new with your project?

Re: 302 Chevrolet Engine Build
 

I have been working on the head porting, a lot of time spent on this.

Re: 302 Chevrolet Engine Build
 

On a stocker?

Re: 302 Chevrolet Engine Build
 

No.


Looking forward to the dyno tests..

Re: 302 Chevrolet Engine Build
 

Those B'ski fixtures are very time saving. You may want to try modeling clay to help raidus the inlet adapter, it will help reduce noise.

Re: 302 Chevrolet Engine Build
 

And smooth out the manometer!

Re: 302 Chevrolet Engine Build
 

Looking good... Mike...
I grew up in service station/garage.. which transititioned to machine shop...
When I was 12-13 years old people were a little freaked out, when I had their heads off or swapping cams or working on their brakes...…learned a lot, especially about people
Doing what you are.... you have evidently spent a lot of time watching and learning..
Is that what your Dad does for a living?

Re: 302 Chevrolet Engine Build
 

I thank everyone for their support and help. My inlet radius was given to me be the Disident and it fits the port perfect, it is joined to the port by green modeling clay, nasty stuff thats hard to get off. anything it touches. I have 254 CFM @ .650 lift with a 4.030 bore @ 28 inches, I want a solid 260. I do work in the shop with my Dad.

Re: 302 Chevrolet Engine Build
 

For those who have made comments about the radius entry piece that Mike is using while flow testing his project 302 heads.:D...It is NOT a Brezyinsky piece. It is home grown and cast right here in Colorado. It employs a very liberal radius and is adequately thick to encourage no "edge effects" from lesser radii designs.;)

Mikey, keep doing what you are doing and enjoying it too!;)

BTW - If one sees the manometers bouncing around, it is typically a sign of bi-stable airflow that needs to be addressed in the port, not from just changing the radius inlet guide.:cool:

Regards to All that like this kind of stuff,
HB2:)
Dissident

Re: 302 Chevrolet Engine Build
 

I hope I can explain myself correctly. I believe you use a wand to go into a port and measure air speed or flow I guess. If the air speed drops alot on a inside radius of port, would you want to fill the radius to get speed up or get a larger radius to help speed up air? If it sounds like I don't know what Im talking about just say so as I have not been around flow benches all but a couple times