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Can anyone recomend a good desk top engine dyno.
I would like one that could tell you 1/8 & 1/4 mile times
plus differant cams valves compressions HP Torques.
This differant componates on the engine to see what will work best
like intakes carbs headers and so on.
You guys know what I am talking about./
Just a decent Engine dyno for building engines thanks. That way I don't have to be bugging everyone else for ansers I can check out my self.
Thanks again; Kurt
Richard (Tech1) has one and did a workup on my 331, so he should be able to help when he sees this.
Don
Thanks Don. I'm currently using a DynoSim 4.2 with Pro Tools which I bought a couple of years ago. There is now an upgraded DynoSim 5 with Pro Tools. If I were going to purchase a software dyno today, I would purchase that one and also CamDisk8. If you want to use only CompCams in your builds, they will plug right in once you have the part number you want to try in the motor, but I have found that by not having the cam software, I have to do a lot of shopping for different grinds and then hand-enter them. If you just want to see how quick and how fast a car can go with X horsepower, there are many calculators online to do that. You need only horsepower and car weight. If you want to play with components in the chassis and change setups to see what the result would be, then you would want to purchase either DragSim5 with Pro Tools or DeskTop Drag5.
http://www.proracingsim.com/products.htm
Is he quick or what?????? :LOL::LOL:
Don
Yes he is Don; thanks.
I was looking at the Virtual engine dyno but I hate to throw money away and it won't do what I want it to. They do give you a free calculater and do several differant thing.
I am realy more worried about getting the engine HP and Torque with differant carbs intakes came heads and stuff like that. I want to see what differant cam makers put out for power range, torque and HP. Isky looks real good to me but I want to match them up against comp cams, erson, Lunuti and other to see what cam I really want to use.
Thanks Tech. Kurt
i have the pro sim dyno 5 i like to put my cams in so skip the cam disc. the only thing i do not care for is the head flow charts are out of date so i have to shop around for them flow numbers.this is a gray area any way still good entertainment
How much did that pro simsdyno 5 run you Pat???
Thanks Pat, for mentioning heads. I forgot to explain that, but what I do is find the published flow data from Stan Weiss or from the manufacturer or from another independent shop that has flowed the heads. I factor those numbers by either 0.90 or 0.95, depending on how much I think the fellows who flowed them are skewing the numbers and enter them into the DynoSim manually. It's the only way I have found to be REAL about the outcome. When push comes to shove, I think the only ones you have to worry about really tweaking the numbers is the manufacturers. Bigger numbers sells more heads. I factor Edelbrock down by 10% (0.90) because of the feedback from engine builders who dyno test motors with Eddy heads.
There are lots of tricks to embellish the flow numbers, you just have to figure out what the flow bench operator did, such as using a 4.200" barrel to flow a small block Chevy head. The vast majority of the cylinders on these motors that Johnny Hotrod is building will be less than that and so you just have to factor the numbers down a little toward realistic. There are other tweaks, such as multiple valve angles, undercut valve stems, bowl blending, wet/dry flow, etc., etc. that may be hidden in the numbers.
In short, it's not just a matter of getting the software and putting it on autopilot. You have to play with it and tweak the numbers to get anything near realistic. I think I have it down pretty close now and can generally get to within 2% or less of the readings from a "real" dyno. Being that close can allow you to change components and trust what happens as a result.
I will be doing lots of tweaking with differant carbs intakes and camshefts, not to mention compression ratio's for differant cc heads/ valves sizes.
I like the broad power range cams that have lots of torque.
I don't care for these cams that make power for 2 thousand rps and then drop off the face of the earth.
i am a dealer thru comp cam so its about what they are on lineQuote:
Originally Posted by vara4
well i have had real world numbers .like you said its a tool how you use it and what you plug in may not be what you will see could be more or less .i run numbers thru for cam power band thats about all i us it for .has for head flow i have a guy that flows my heads then we get serous .for dyno numbers. i low ball some of this stuff so i round down . there things i do that the dyno sims can not see that i feel that makes power . i can say that i have lost jobs from guys thinking they where going to get 650+ hp with a mild pump gas bbc under $5000. with no real world dyno time ? i am sure some guy told him he could get 750hp :HMMM:Quote:
Originally Posted by techinspector1
Just curious Pat, what HP would mine be..
well it is all of you feel by the seat of your paints and then some :D if in tune mild 800s like i said before i ran the numbers and built it ;) i ran a hand full of old builds that i knew what they ran like so i did run yours as well i will PM you if you want the TQ and HP it is not bad for a small stock bbc on pump gas engine with stock headsQuote:
Originally Posted by rdobbs
800 Hp.WOW!!!!Not bad for a small BB with pump gas and stock heads.
I will take your word for it as the gospel, and I can assure you that I
will never see or feel all the HP, as my nerve isn't so good anymore.
OH Hmmmm sorry wrong build ;) them heads you have will flow very good and with that big air cleaner you have on top mild 800 EZQuote:
Originally Posted by rdobbs
I ordered the desk top 5 dyno, I guess it will get here in about a week.
Then I will get to play around with it.
Kurt
Did you plan to get CamDisk8 also?
No Tech: I don't care for comp cams just my preferance though.
You must have misunderstood what I was trying to tell you earlier. DynoSim5 is made by CompCams (check both addresses) and so those are the only cams (800 different grinds) that will directly plug into the program without having to manually enter all the specifications of another cam brand. If you get the CamDisk8, there are another 6000 cam grinds of all different grinders that will plug in without manual entry.
Ya I did misunderstand what you were saying.
Well I can not do anything till monday when they are open again.
When I called them and they answered the phone comp cams, I thought I dailed wrong.
Then I talked to a women that had to connect me to thier tech department because she didn't know if they sold the sims dyno. Can you say right hand don't know what the left hand is doing!!! HE! HE! HE! Thanks Tech.
Kurt
Hey Tech; I called about the cam disc this morning and the guy in the tech deptment told me that the cam disc would not work with my desk top dyno.
I said what are you kidding me because your about to get this desk top dyno back if it does not work and I just orderd last week. So the guy puts me on hold for about 15 minutes and comes back and says oh ya that will work with desk top dyno 5.
So I orderd it anyway this morning, and it should be here sometime this week.
Thanks Kurt
Well I got everything in and installed now Tech.
I am trying to figure out how I see the 6,000 cams that are on the cam disk.
And install it to the other program so I can see what HP and torque they are putting out.
Kurt