Only my opinion
17 posts [100%]
Orange County CA
| « Re: Harmonic Dampener Question? (SwiftITR)||« » 5:27 AM 1/6/2017
Disclaimer: I'm no expert in engine harmonics, but I try to use common sense where available.
You asked a very specific question, but haven't really defined your definition of "safe". Daily driven for 90,000 miles, a race season or 2 hours?
|Quote, originally posted by 94eg! »|
|ITR part is 13810-P73-J01 so it is definitely different. They probably use a smaller harmonic damper since the crank is beefier and the flywheel is lighter...|
***edit: Now I remember that the ITR pulley is meant to control crank harmonics in a higher rpm range than the other pullies. I think Larry over at Endyn explained this some years ago. A rubber isolated harmonic balance can only control crank harmonics in a specific rpm window, so it's designed for the specific application. This explians all the different pullies from the different motors...
from this researched post, dampers are tuned for a rev range on a specific design. Now if you were to change a component that contributes to harmonics balance like the crank, (flywheel too?), that damper won't work as designed.
160 posts [100%]
Des Moines Iowa
Context: I am really hoping to get 100,000 miles out of this recent motor rebuild. My Integra is used as a weekend warrior mostly, but I do daily it in the summer months sometimes. My last rebuild in July of 2004 went 90,000 miles before needing to be rebuilt last summer. That included some track time and a lot of drag racing under 20psi of boost. I am just looking to take as much stress and wear off of the bearings as possible. I am only pushing 10psi as of now. I was just curious if the rubber was specifically tuned for each type of crankshaft or if all OEM pulleys are pretty much the same, minus pulley diameter obviously. I will check out that thread on the subject. Thank You.
13088 posts [100%]
A new crank pulley isn't cheap, but if you are looking to achieve 100,000 miles out of your build on an ITR motor/crank, then I would play it safe. You already dropped the coin on the rebuild, so I would opt for the best solution for motor longevity.
98-0197 - Sold
01-0187 - Sold
ITR Expo 16 Event Photo Thread