Stock crank damper limit?

[mk3-4-me]

Hey so I'm building up my 7m for 600-700 whp. The engine is fully built, only stock part is my crank damper. I'm just wondering if there is a certain limit that the stock damper wouldn't be good anymore as far as horsepower. I know they have the ATI damper, but i was wondering how good the stock one was.

I will be revvin to around 7500 to, I'm sure that will have something to do with it...

 

[figgie]

First off

is it a BRAND SPANKING new stock OEM damper? If it is not, then toss it for High HP. Age causes the "rubber" portion to become..like a rock. Worthless.

ATI damper. Call it a day and have SFI approval also.

 

[mk3-4-me]

No it's not a new one. It's like 20 yrs old. Lol

Ok I figured I'd be better off with a ATI.

Thanks.

 

[mk3-4-me]

Any good place to buy one? I'm gunna look a little more for one that someone is selling but I haven't seen any yet.

 

[hvyman]

Call ati.

 

[Zumtizzle]

Call ati.

When I called ATI they quoted me 500 bucks! (they're made to order.)

Order through summit.

 

[supraguy@aol]

Yup.
Summit's the cheapest price I've seen so far.

 

[CtownDawgs88]

stock limitation is 450 on that dampner

 

[GrimJack]

stock limitation is 450 on that dampner

If it's brand new, maybe. Of course, a brand new one is $325, and a new ATI is better, so for an extra $45 I'd be hard pressed to justify the stock unit.

 

[Poodles]

Woudln't you need a larger ATI unit for those power levels (like Duane?)

 

[GrimJack]

Hmm... yes, I think you would. Best to call ATI and ask, they'll know what the regular size wheel is good for, and how much bigger it needs to be for more power.

 

[NashMan]

^ his just has a toner ring cut into it when I had a peek

most people will run fluid damper at higher level's in stead of elastomer

sadly no makes one as of yet but they do make them for the jz's thou

 

[GrimJack]

^ his just has a toner ring cut into it when I had a peek

most people will run fluid damper at higher level's in stead of elastomer

sadly no makes one as of yet but they do make them for the jz's thou

Evidently you missed the massive size increase, then.

 

[IJ.]

Yep Dwights is MUCH larger diameter than stock...

Bigger BOOM = more Crank deflection so a larger mass is needed to "dampen" it.

 

[Backlash2032]

I was actually searching the web to find out why you needed to upgrade your damper at higher power levels.. so thank you IJ!

Sent from my HTC Rezound using Tapatalk 2

 

[NashMan]

Evidently you missed the massive size increase, then.

hummm all take your word for it then dave

I know the reg ati is larger then stock how much I can't really remember


must be hard to see the stock timing mark on the front cover with a bigger dampener

 

[GrimJack]

Doesn't matter to Duane, his timing is displayed on a computer screen by the Motec.

 

[IJ.]

hummm all take your word for it then dave

I know the reg ati is larger then stock how much I can't really remember


must be hard to see the stock timing mark on the front cover with a bigger dampener

Reg one is the same size as stock... if you don't know don't post it's misleading.

 

[SWD Fredester 3]

Glad I read this thread. Guess I'll have to stop by ATI and see what they have. The new one that I have on my build is Reg, I will see what they can do for 700+. Maybe just change out the diameter size?

 

[NashMan]

Reg one is the same size as stock... if you don't know don't post it's misleading.

mine needed a new belt it was bigger from what I remember, but not much thou.... maybe I say maybe quarter or half inc ?

mine all so need the pullie bolt turned on lath as well

i wounder if they have yet to fix that issue