to dyno or not to dyno

Just wondering what everyone's thoughts were as to dyno a new engine or not waste the wear and tear on the thing. My fuel pump and system were flowed. So have a starting point.

 

You'll only learn if it leaks oil or not....the real dyno is the track.

Brandon Booher
NHRA TAD #34

 

The Dyno is "fun" and a "quick" way to see the difference in a cam or injector swap, etc.....but when ya pull it off the Dyno.....you will be "tuning" it all over again once its bolted to the chassis!

 

1000.00 plus parts and fuel and what ever unforeseen problem that will occur . Well worth it . Who built the motor ? Is it all new ? A mixed bag of scraps from everybody leftovers. Why fight new motor blues , clutch tuning , gear chasing, chassis set up , unprepared tracks too. Cut down the variables , the learning curve sucks if you can't pay a high dollar crew Cheif to fix your problems in a weekend . It's a lot of money , just do it. Then pay a tuner to go to the track with you and get your setup running properly. I spent 2'years making bad aborted runs cuz I was too cheap. Now racing is fun again.

 

I ran my current motor on a dyno and hired Les Davenport to tune it for the day and I learned more that day on my tuneup than the prior season at the track. I would run it especially if it's a new combo.

 

It is a new combo, everything new cn billet block, BAE 8x heads, modified blower carbon injector, you get the picture.
Thanks for the input.

 

A dyno will not give you a tune up to race with, but will verify that eveything is OK, no leaks, drips, errors. Will also let you set timing, idle, valves, etc. and when you get to the track you are ready to start up and go. Plus the sound on a dyno with a good exhaust system is really cool.

 

I'd say worthwhile if the dyno guy is very knowledgeable with blown alky stuff and have a Davenport type guy on call.

Gk www.MotorSportsInovations.com

 

setting the valves is all great but after your all done if it was my motor I would pull the push rods out till you are going to run it again..dave

 

If leaving the valves set is going to hurt the springs(I assume that is what you meant ) they must be junk springs, Excess RPM and heat is what kills springs, not sitting idle in a motor in the trailer.

Doug

 

I run the davenport fuel program and have Jon Salemi on call.
Thanks again for all the advice.

 

dyno

The dyno has more value on a oddball program. If you're running std stuff that Salemi recommended it's probably better to spend the money on testing at the track.
You should have good power for a starting point right out the trailer.
A lot of really fast stuff has never seen a dyno and a lot of huge dyno sheets have never translated into stellar ET's
I look at our local track as the check for oil leaks and shaking stuff down with soft tuneups.

 

Salemi knows that combo well , no need to dyno it .

 

pulling pushrods

It does make sense to pull the pushrods out if you want them to live for a while. You got to remember that most springs are between 750-1000 and up lbs open. Why risk weakening your springs and eventually have one break and drop a valve and destroy your engine and make the track crews very p'd off for having to shut the track down to clean your mess. Just my 2 cents.