Engine test stand build

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Oct 1, 2021 | 10:22 AM

#16

hiball3985

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From: tujunga, calif

Thanks, I'm really not a fabricator. I have a torch, grinder and old stick welder and don't use them enough to get good

I did build my own hoist and engine stand years ago..
And I love your engine also..

Oct 1, 2021 | 11:15 AM

#17

ranger140892

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Quote:

Originally Posted by hiball3985

Thanks, I'm really not a fabricator. I have a torch, grinder and old stick welder and don't use them enough to get good

I did build my own hoist and engine stand years ago..
And I love your engine also..

So you don't even buy green bananas?

Yeah, I built it on a regular store bought engine stand too. But I welded every joint on the stand to make it more rigid.

Oct 1, 2021 | 11:18 AM

#18

ranger140892

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Quote:

Originally Posted by DaveMcLain

That looks great. It is a real luxury to be able to start and run the engine before it leaves and goes into a vehicle.

Thanks. I used to think it was a "luxury". But one time having a rear main seal blow out during initial start up, helped me make the decision to build a test stand.

Oct 1, 2021 | 12:12 PM

#19

hiball3985

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From: tujunga, calif

Quote:

Originally Posted by ranger140892

Thanks. I used to think it was a "luxury". But one time having a rear main seal blow out during initial start up, helped me make the decision to build a test stand.

Wise decision. I've only had one major blow out on a new engine start up many years ago when I was leaning, I left a rod nut loose

Nov 7, 2021 | 01:04 PM

#20

ranger140892

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It's taken a while, but I finally got a free day to pull the engine out of the shop and do some full walk around videoing.

Nov 7, 2021 | 06:25 PM

#21

hiball3985

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From: tujunga, calif

That is just awesome! and the engine sounds great. Congratulations. I refuse to put mufflers on mine

Nov 7, 2021 | 08:30 PM

#22

ranger140892

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Quote:

Originally Posted by hiball3985

That is just awesome! and the engine sounds great. Congratulations. I refuse to put mufflers on mine

Thanks, Hiball.

I'm not sure those can be called "mufflers". I just wanted them for carburetor initial tuning, a little noise reduction. I briefly ran it without those, and it was brain crushingly loud.

Nov 8, 2021 | 06:41 AM

#23

hiball3985

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From: tujunga, calif

Quote:

Originally Posted by ranger140892

I understand what you are doing. Mine is just for fun LOL . I haven't made a throttle set up yet and I'm waiting on a 2 gallon gas tank from a friend.

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Nov 8, 2021 | 06:51 AM

#24

DaveMcLain

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Quote:

Originally Posted by ranger140892

Thanks. I used to think it was a "luxury". But one time having a rear main seal blow out during initial start up, helped me make the decision to build a test stand.

Right now I've got the engine out of my brother in law's boat sitting on my dyno just so that we can run it and look for an oil leak. It is nice to be able to run it for an hour or so out in the open. We'll do some pulls on it too just to make sure everything is ok but it probably is just fine.

Those straight through glass pack mufflers do a good job of muffling without costing power.

Nov 8, 2021 | 07:13 AM

#25

ranger140892

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Quote:

Originally Posted by DaveMcLain

I'll have a much quieter Magnaflow 2 in / 2 out muffler w/ 3" pipes on the truck.

Having a dyno available sure is handy. I may or may not take this engine back to the machine shop to get dyno run. It'll strictly be for fun if I do. I don't particularly care to find out what the engine will do above 5000 rpm. But it would be nice to know the torque curve from 1500 up to peak or 4500.

Nov 8, 2021 | 07:43 AM

#26

DaveMcLain

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Dyno testing even low powered engines can be incredibly loud so most of the time I run the engines with mufflers of some kind. I have a set of stainless Magnaflow mufflers that I use a lot when I'm running a 3 inch exhaust. They are really good mufflers.

I'm getting ready to re do the 460 in my truck and I might run it on the dyno for the same reason. I don't know if my absorber will be able to pull it down to 1500rpm but it might.

Nov 8, 2021 | 08:30 AM

#27

ranger140892

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Yeah, I imagine Diamond Racing's dyno will probably only pull as low as 2500. But I can guesstimate the shape of the curve to the left. Or just flat out overestimate it by 200 lb ft!

Nov 8, 2021 | 08:56 AM

#28

DaveMcLain

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Quote:

Originally Posted by ranger140892

Yeah, I imagine Diamond Racing's dyno will probably only pull as low as 2500. But I can guesstimate the shape of the curve to the left. Or just flat out overestimate it by 200 lb ft!

It might it just depends on their absorber. Some Superflow dynos can't absorb all that much below about 3000rpm and that's just part of how water brakes work in that their ability to hold torque increases with RPM. My dyno with the single rotor toroidal absorber has held 629lbs/ft @ 2900rpm when I was testing a 582 Chevy for a jet boat. I can't think of anything that I've tested lower and with more torque. The straight finned rotor absorber that I had originally couldn't do that.