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Dyno new engine-worth it?
#645473
03/19/10 10:30 PM
03/19/10 10:30 PM
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Joined: Aug 2009
Posts: 2,037
Mooresburg, Tn
'72CudaRacer
OP
top fuel
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OP
top fuel
Joined: Aug 2009
Posts: 2,037
Mooresburg, Tn
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I'm running short on time to get my engine together and in the car to be ready for 1st pts race. How much does it normally cost to dyno a new engine? What usually is included?  I had machine work done (was even allowed to help with some of it) but I'm doing all the checking/fitting and final assembly myself, in my shop. I'm concidering the dyno time to make sure that the engine is ready to go and broken in, no leaks, carb matched, timeing optimal ect. I think if I do go with the dyno time, I can put the engine in and go race right out of the trailer. What do you guys think? Is it worth it?  Thanks, Brian
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Re: Dyno new engine-worth it?
[Re: '72CudaRacer]
#645475
03/19/10 10:39 PM
03/19/10 10:39 PM
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Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing
master
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master
Joined: Mar 2007
Posts: 3,300
Northern Indiana
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A good dyno operator can catch many problems before they take out a lot of expensive parts. They keep tabs on a lot of things the average guy can't. If you can afford it,it's not a bad option. 
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Re: Dyno new engine-worth it?
[Re: roadhazard]
#645477
03/20/10 06:35 AM
03/20/10 06:35 AM
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD
master
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master
Joined: Jan 2003
Posts: 4,852
KENTUCKY
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I saw a huge benefit. Caught some minor stuff during break in...tweaked it,,,and got the optimal power out of it..while on the dyno...well worth the money to me.... then when i dropped it into the car,,,i knew everything was fine,,,and didnt have to go thru months at the track of trying to figure out various problems,,,I think it saved alot of headache,,and perhaps time/money to get it right on the dyno,,,
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Re: Dyno new engine-worth it?
[Re: Old School]
#645482
03/20/10 10:13 AM
03/20/10 10:13 AM
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Joined: Jun 2003
Posts: 2,410
Weatherford, Texas
RapidusMaximus
top fuel
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top fuel
Joined: Jun 2003
Posts: 2,410
Weatherford, Texas
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...I wont mention any names...but I was in a far away place where there was no Mopar engine builders...so I went to a VERY well known Chevy engine builder (I know, I know)...he built the short block for my low deck stroker...part of the deal was a dyno session after I completed the build...made 5 dyno pulls...best pull was 782 hp...no signs of trouble engine sounded great...cut the filter apart, no signs of metal or foreign material...pulled it off of the dyno put it in the dragster and headed straight to the first race of the season. First pass it was 3 tenths slow, tuned on it, next pass it was a tenth off...3rd pass it grenaded big time, took out everything but the valve covers and intake manifold. The carnage was so bad we couldn't figure out what broke first...most likely cause was either too tight clearance on the 7/8 rod journal or it pulled the pin out of the piston on the #8 rod...so I guess my point is the extra cost of the dyno did me no good...and my next short block will be either built by myself or a reputable Mopar shop and I probably wont waste my money on dyno time.
1968 Plymouth GTX
1974 Dodge P/U Long Bed Stepside 318
2019 Ram 2500 6.4, auto, 4WD
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Re: Dyno new engine-worth it?
[Re: '72CudaRacer]
#645483
03/20/10 11:16 AM
03/20/10 11:16 AM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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Good to know where the torque and HP curves fall in to get your drive train in the ball park.
Fastest 300
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Re: Dyno new engine-worth it?
[Re: RapidusMaximus]
#645484
03/20/10 04:23 PM
03/20/10 04:23 PM
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Joined: Jan 2003
Posts: 6,135
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,135
Melbourne , Australia
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Quote:
...I wont mention any names...but I was in a far away place where there was no Mopar engine builders...so I went to a VERY well known Chevy engine builder (I know, I know)...he built the short block for my low deck stroker...part of the deal was a dyno session after I completed the build...made 5 dyno pulls...best pull was 782 hp...no signs of trouble engine sounded great...cut the filter apart, no signs of metal or foreign material...pulled it off of the dyno put it in the dragster and headed straight to the first race of the season. First pass it was 3 tenths slow, tuned on it, next pass it was a tenth off...3rd pass it grenaded big time, took out everything but the valve covers and intake manifold. The carnage was so bad we couldn't figure out what broke first...most likely cause was either too tight clearance on the 7/8 rod journal or it pulled the pin out of the piston on the #8 rod...so I guess my point is the extra cost of the dyno did me no good...and my next short block will be either built by myself or a reputable Mopar shop and I probably wont waste my money on dyno time.
I wouldn't let one bad experience put you off using this valuable tool of Race Engine Building. Like any tool, if not used properly you won't get the best results. There are several engine dynos near my house, but I would only ever choose to use one. Reason being the operator is an Engine Builder himself and is exceptional at spotting any problems that may arise. Sadly there are many dyno operators out there that will just sit in his chair and pull the handle.
Have a talk to some local racers and see who they use and go from there.
AL....
Alan Jones
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Re: Dyno new engine-worth it?
[Re: quickd100]
#645489
03/20/10 07:52 PM
03/20/10 07:52 PM
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Joined: Apr 2007
Posts: 2,026
Trumbull,CT.
jim sciortino
top fuel
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top fuel
Joined: Apr 2007
Posts: 2,026
Trumbull,CT.
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I wouldn't put an engine in my car without dynoing first.
Saves a ton of time and laps. Timing, leaks, HP & TQ #, etc., how can you possible know how to gear and converter a car without knowing what you have. Not just peak #s, but also where the power falls off.
And, if you have extra time and money, the ability to try different oils, fuels, curves, carbs, spacers, headers (if there happen to be multiple sets available) and so on, is invaluable.
An engine on the dyno is NOT exactly the same as an engine in a car making a run at speed, but the baselines from the dyno session will give you a headstart on zeroing the combination.
PERIOD!!!!
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Re: Dyno new engine-worth it?
[Re: quickd100]
#645490
03/20/10 08:31 PM
03/20/10 08:31 PM
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Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
tubtar
master
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master
Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
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Quote:
On the 1st I take off to pick up a 2000 hp Land&Sea engine dyno for my garage. Hopefully I'll have it up and running sometime this summer.Dave 
Ya don't say , neighbor ?  
I will have mine done before then , but I am using R&R in Spring Lake Park.
They are doing the heads now and though they aren't MoPar guys per se , they are highly recommended and have been at it for a good while.
Like most of you have stated , it will be instrumental in deciding my converter and nice to know some baseline tuning.
Especially since this will be my first trip down E-85 lane.
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Re: Dyno new engine-worth it?
[Re: jim sciortino]
#645491
03/20/10 08:58 PM
03/20/10 08:58 PM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Quote:
I wouldn't put an engine in my car without dynoing first.
Saves a ton of time and laps. Timing, leaks, HP & TQ #, etc., how can you possible know how to gear and converter a car without knowing what you have. Not just peak #s, but also where the power falls off.
And, if you have extra time and money, the ability to try different oils, fuels, curves, carbs, spacers, headers (if there happen to be multiple sets available) and so on, is invaluable.
An engine on the dyno is NOT exactly the same as an engine in a car making a run at speed, but the baselines from the dyno session will give you a headstart on zeroing the combination.
PERIOD!!!!
 Well said
not to mention knowing your fuel curve
Don't hurt to ask around and see who you might trust with their tuning abilities. I won't mention names but not all dyno's and operators are created equal so talk to someone you know that has good first hand info.
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