Did you ever test an I4? If so what was the outcome?4vpc wrote: ↑Fri Sep 25, 2020 5:21 pmDid you ever test an I4? If so what was the outcome?maxracesoftware wrote: ↑Fri Sep 25, 2020 3:25 pmi did a bunch of different Damper tests for Troy Coughlin's (Jegs) NHRA ProStocker in 1994
ATI , Rattler, Fluid Damper, etc.
and then i personally did a bunch on various engines i had in my Shop -vs- no Damper
you will always loose TQ and HP if you run without a Damper
ATI Damper always beat out the other Dampers i tested thru the years !
i put all that Data info into equation form in PipeMax v4.50
so you can instantly see how much TQ and HP a Damper or without a Damper can give you
Edit : i forgot about Innovators West Dampers ... these Dampers were neck-and-neck HP results as ATI Damper in Dyno tests on NHRA SuperStockers
no ... never had a 4-Cylinder InLine engine come to my Dyno with a real Harmonic Damper ... all they had was a solid Hub !
Horrible results
my experiences => 4-Cyl on the Dyno , the vibrations + induction pulsing popped-off the Air Turbine Fan + the Honeycombe
right out the Air Turbine so that all i saw looking into the room was the white Turbine Fan decending thru the air
like a top helicopter
i had to go double-check every Dyno + engine mounting bolts to make sure they were still tight after each Pull
Paul VanDerLey told me same thing happen to him constantly
when he was developing 4- Cyl engine for Pontiac ??
i have the thin Book in my shop from his research