Re: Dumbo The Flying Elephant
 

I’m a nuts and bolts kind of guy. Patsy the IT person.

Re: Dumbo The Flying Elephant
 

I think we are done with the pink car. We have to get to work on Dumbo or he will miss Indy.

Re: Dumbo The Flying Elephant
 

Half a second slower for some reason?

Re: Dumbo The Flying Elephant
 

Reason why it’s slower? One reason may be those slow runs could be used as the case for another HP reduction for that combo.

Re: Dumbo The Flying Elephant
 

Hope you get Dumbo going and figured out.

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I’m hope to be at the sports with Dumbo again. I have a lot to do.

Re: Dumbo The Flying Elephant
 

How did that happen? Both generators and the motor home are all due for service before we go back out. Race car is ready for engine oil and filter change and the transmission is ready for the same treatment.

Re: Dumbo The Flying Elephant
 

We have some grease fittings that won’t take grease, brake chamber that’s leaking, and a seal on the front diff that is leaking. We will have it back at the Cat House to finish repairs. I want my motor home to be able to pass a DOT over the road truck inspection.


https://classracer.com/t/27068.jpeg

Re: Dumbo The Flying Elephant
 

The above picture is using a stroke checker and a modified spring checker to find a out when each spring goes into coil bind. Install all hardware on the head, measure with a height mike, subtract valve lift, and add shims. Piece of cake.

Thanks Ken

Re: Dumbo The Flying Elephant
 

Your new full time job keeps you very busy, praise the lord for your gift.

Re: Dumbo The Flying Elephant
 

I’ve forgotten who told me this years ago, It’s just a math problem and try to get the numbers to like each other.

Re: Dumbo The Flying Elephant
 

Sounds like Kenny Duttweiler- the entire world is just a math problem to be solved....

Re: Dumbo The Flying Elephant
 

Frank I am not gifted! I try real hard to follow directions that smart people were kind enough to share with me.

Again thanks to all that have help me over the years.

Re: Dumbo The Flying Elephant
 

At the PRI show I purchased every height micrometer that PAC sells. I thought I had all the bases covered, not so. The new Hemi is a little different from anything out there. To make a long story short I had to find an adapter in a piece of bar stock. It works well. Supper time got to go.

Re: Dumbo The Flying Elephant
 

Setting up to make custom shims for Dumbo, sometimes times I feel like the Dumbo.

Re: Dumbo The Flying Elephant
 

Today I should be able to assign springs to valves get them assembled and verify coil bind. It should be a busy day.

The reason for all the lathe work is the valve guide bosses have a healthy radius at the bottom where the spring cup or shim seat. Some of the shims I had to turn the OD down to fit the pockets or bore the ID to go over the guide boss.

Re: Dumbo The Flying Elephant
 

Amazing all the work involved to build a fast race engine. Every detail needs to be checked and double checked. Awesome work Larry.

Re: Dumbo The Flying Elephant
 

The worst thing about building you own race engine is I have no one to blame but myself. I wake up in the middle of the night and think of things I need to do or forgot to do the day before. It makes for a less than restful night.

Re: Dumbo The Flying Elephant
 

Ibuprofen-PM especially after crawling in and out or under the car.

Re: Dumbo The Flying Elephant
 

After redoing my coil bind set up three times I'm confident that my numbers are correct and repeatable. I have one head ready to bolt on for final check for clearance from coil bind. The other head is clean with seals, valves, and ready for spring assignment with assembly. It took two sets of springs to get eight springs on the intakes to all be at the same open and seat pressure. The exhaust side springs are 10 pounds lighter on open and seat.

Does anyone have the old style Larson Systems Solid Height Gage, if so I think I would be willing to purchase it.

More later

Re: Dumbo The Flying Elephant
 

Has anyone noticed how the tolerance of parts seems to be expanded. I bought some stuff that was advertised to be .060" thick out of 32 parts no more than four were .060" thick. Thickness range was .064" - .056". Many of them would vary .003" across a face of 1.311". All was not lost with the unintended variations in thickness it allowed a closer set up than + or - .015'' shim choice.

............and so it goes

Re: Dumbo The Flying Elephant
 

After cleanup, put up, straighten up it will be rod and bearings day. I’m happy with how close I was able get the heads to my target. I just hope I have the correct target.

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Checking for rod bolt stretch. .602 in the relaxed position. After .0055'' stretch to 6075''. After all the bolts I will check big end of rod. I think size is min. to max ID is only .0005.

Re: Dumbo The Flying Elephant
 

Rods all checked good. Installed bearings and checked crank pin size and I had the desired vertical clearance inside the bearings. I have new oil rings and second ring to check in the bores tomorrow. Tonight I’m doing a little paperwork so I don’t lose my way or remind me of what not to do next time.

Re: Dumbo The Flying Elephant
 

I don’t know about you but I have a difficult time accurately measuring end gap of the oil rails. I always seem to upset the ring in the bore with my feeler gage making the measurement questionable. The solution for me was using gage pins to measure end gap, it works like a charm.

Re: Dumbo The Flying Elephant
 

Finely got the clearance almost like I wanted, you might have noticed I didn't say correct. Standard bearings were a little tight and used plus .001 were a little big. New plus .001 bearings are not to be found. Semi solution, a half and half mix of new and old bearings. With my new ball mic I was able to check shell thickness of old and new parts.

Now I will clean my was tank and install fresh solvent so not contaminate the engine with foreign materials. After cleaning the block I have to reinstall the cam bearings, passage plugs, and dowels.

Re: Dumbo The Flying Elephant
 

For lunch we went to the 142nd Fancy Farm picnic where you have a choice of ten tons of meat. BarBQ pork, beef, mutton,and chicken plus all of the home cooked green beans, creamed corn, slaw, home grown tomatoes, Lima beans, dill pickle spears, home made deserts, with fresh iced teas and lemonades. It’s all you can eat for $15.00 a person, for me it’s a great deal. It’s a bit of America that most people don’t know about.
I really need to take a nap but I have to get back at it!

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I’m ashamed of myself self, I took a nap instead of working. So I’m up and
at it this morning.

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Slacker!;)

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I got the solvent changed out in my tank. Installed cam bearings test fit cam and it turned freely. Installed plugs in oil galleys and quit at supper time. For me I’m putting parts together maybe dyno early next week. I’m more than ready to here some 8000 pulls.

Re: Dumbo The Flying Elephant
 

The wiring wizard, Bob Toy, will be here today to see about installing my Racepak. Some times it's best to have a pro do the work.

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A little delay had to rethink my bearing clearance. The crank is in, rear seal installed, roller cam bearings lubricated. I building this one on a bench without using an engine stand. I’m going to use a ladder to see where to degree the cam in, all of my benches are tall.

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Building it the Glidden way, Mad Dog is definitely the Pro Stock GOAT, all others are mere imitations. Definitely looking forward to seeing Dumbo at Indy!

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I thought it might not stress the block as much and maybe everything will spin a little easier.

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Getting ready to check where the cam centerline is.

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Cam is where it’s supposed to be. I should be able to fill some more holes and stretch some bolts tomorrow.

Building this on a bench has been a little different. The more I work on it the harder it is to wrestle into the next position.

Has anyone looked up ring gap placement for the five different parts of the ring package. Several ideas to look at.

Re: Dumbo The Flying Elephant
 

Larry,

Page 2 of the Total Seal installation sheet has their recommendation for gap placement:

https://assets.website-files.com/5ec...heet2010_2.pdf

Bill

Re: Dumbo The Flying Elephant
 

There are other sites that have a very different placement. I thought it was interesting.

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And then there is the issue of the rings turning on pistons after running.

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So that’s how the ring gaps sometimes get lined up over each other. It’s such a physics problem.